Vigilant Seed Bank Reduction for Weed Control

Vigilant Seed Bank Reduction: Whatever it takes, don’t let weeds set seed.

By Patrick Cavanaugh, Farm News Director

For the past 15 years, Robert Norris, professor emeritus and vegetable crops weed specialist, UC Davis Department of Plant Sciences, has continued to attend Weed Day each year at UC Davis and to contribute weed photography for CalPhotos, a UC Berkeley Digital Library Project photo database of world-wide plants, animals, landscapes, and other natural history subjects developed to provide a testbed of digital images for computer science researchers to study digital image retrieval techniques. Norris was involved with initiating the Plant Protection and Pest Management Graduate Program at UC Davis.

“I’ve been a botanist since I was 14 years old,” Norris said, “and I still have a lot of passion regarding weed control.” Norris has a strong and steady philosophy on weed control and it all comes down to seeds. “The last 25 years of my work, I looked at population dynamics of weeds, like seed longevity in the soil and what we call the size of the seed bank also known as the seed production by weeds. That’s really where I spent most of my time.

Field Bindweed

“I found that most people have a very poor idea of how many seeds are produced by a weed. This led me to question some of our current management philosophies; namely, the one that comes out of entomology—the use of thresholds (or how many weeds need to be present before treating them),” noted Norris. “I felt that for weed science, thresholds were not the way to go, and my position has been vindicated by the problems we’ve run into using thresholds.”

Norris offered the example, “Barnyard grasses are probably one of our most serious summer grass weeds. A small plant can produce 100,000 seeds; while a big plant, well over a million. I can remember going put in a tomato field years ago and looking at one barnyard grass plant. Because I had been working with it, I can say that plant probably put out 50,000 seeds. If you spread those seeds around an acre, that’s enough to give you serious yield loss the next year,” Norris explained. “Again, that’s one plant, spread out over an acre. Obviously its seeds wouldn’t spread over an acre [on their own], but with our tillage equipment we would move it around quite a bit.”

“My bottom line for about 30 years now is: Don’t let the weeds set seed. Whatever it takes, don’t let them set seed,” Norris said. If you follow that philosophy, Norris said after a while you drive the seed bank down.

“Many people don’t realize this, but some of our really big growers got on to it a long time ago. One farming operation I worked with for years, J. G. Boswell Co., with most of its land in Kings County. “I knew the manager in the late ’50s, into the ’70s. He now is retired now, but he came to this conclusion himself back in the late ’50s,” Norris said. “I haven’t been on Boswell’s property now for 20 years, because I retired. However, if you go down there, you will not see a weed problem, at least not like most growers.”

“The difficulty really is, in order to carry out this philosophy, you need to use hand labor for weed management and it is becoming less and less easy to find,” explained Norris. “Most weed management is done on a one-year one-crop basis; whereas, the type of management we’re talking about where we’re really thinking seed bank dynamics, has to be done over multiple years. Another big problem that I still see is if you miss one year, you can undo 5 to 10 years of what you’ve just been doing, because of this high seed output,” he said.

NEVER LET ‘EM SET SEED, by Robert Norris, Weed Science Society of America.

California Ag Today2021-05-12T11:05:50-07:00August 8th, 2016|

CAWG Gears Up to Fight New Overtime Bill

Following Defeat of Overtime Bill AB 2757, CAWG Gears up to Fight New Overtime Bill AB 1066

By Laurie Greene, Editor

California Assembly Bill 2757, which called to end the 10-hour workday for farm laborers (by enforcing overtime) and to illuminate extra work time opportunities, was voted down in June 2016, but a new version of the bill, AB 1066, is back on the drawing table.

Brad Goehring, treasurer of the California Association of Winegrape Growers (CAWG) Board of Directors and current chair of the CAWG State Government Affairs Committee, spoke about the process of fighting back on this bill. “We already beat it and we had a major victory in the California State Assembly earlier in the year. The author of the bill didn’t like that result, and it is all union-backed and backed by taxpayer groups like California Rural Legal Association, Inc. (CRLA),” Goehring said.

“But the pressure is back,” said Goehring, also a fourth–generation winegrape grower and owner of Goehring Vineyards, in Clements, near Lodi. “They did a dirty gut and amend bill¹, which is a slide of hand and basically reintroduces the bill again under a different bill number. This time it’s going to start in the Senate and we’re expecting a tough battle; but we’ve got a very organized coalition of Ag associations and we’re going to put the same energy into fighting this that we did before,” explained Goehring.

“It was a bloody fight in the Assembly,” noted Goehring. “But still, we’re optimistic as there are plenty of no votes from the party that wanted this to go through that we think it will be hard for the governor to sign even if [the bill] makes that far.

Goehring maintained, “The key is to educate legislators that the bill would hurt farmworkers because it would force farmers to minimize work hours to prevent overtime payroll. In fact, farmworkers are pushing for this second bill to fail.”

“Where the lack of understanding lies is the clear line between the urban legislators and the rural legislators,” Goehring commented. “The urban legislators, ironically, are the ones who already hav $15 minimum wage laws in their towns—San Diego, San Jose, Los Angeles, and San Francisco. These legislators are trying to cram it down our throats and our lives here in the rural areas. We’re not having any real hard times getting to agreement with either party, if they are in the rural areas. It’s the urban ones that are doing all the damage.”

“We’ve had these legislators out to our farms. We’ve walked away and let them talk openly with our employees, and our employees have told them they don’t want it,” Goehring said. “Our employees have told them that they want to make an honest living. They want to teach their kids how to do the same thing. Our employees have taken it one step further; we overheard them telling the legislators they are not even in favor of any of the entitlement programs because that’s not the way to make an honest living that they want for their kids.”

“With all that said,” Goehring concluded, “the urban legislators are turning their backs on and ignoring our employees. This is all about unions and CRLA. They don’t care about the employees—is basically what they’re saying,” noted Goehring.

¹GUT AND AMEND is when amendments to a bill remove the current contents in their entirety and replace them with different provisions. (Source: California State Legislature Glossary of Legislative Terms).

California Ag Today2021-05-12T11:05:50-07:00August 5th, 2016|

Pecan Growers Excited about Federal Marketing Order

Calif. Pecan Growers Gather to Discuss Federal Marketing Order

By Patrick Cavanaugh, Farm News Director

On Wednesday, August 3, nearly 100 people attended the California Pecan Growers Association meeting at Linwood Nursery, the oldest supplier of pecan trees in the world, located in Le Grand in eastern Merced County.

Not all attendees were current pecan growers; many were contemplating planting pecan trees. New interest and excitement in pecan farming surrounds the newly approved (May 2016) and forthcoming Federal Marketing Order For Pecans (FMO) that will assess growers a few cents per pound to increase pecan marketing and awareness in California and other areas of the country.

Pecan growers and others interested in the crop gathered in Le Grand to discuss Federal Marketing Order for Pecans

“We want to model it after the Almond Board of California,” said Mark Hendrixson, president of the California Pecan Growers Association, whose members farm approximately 4,000 acres of the crop throughout the San Joaquin and Sacramento Valleys.

“We had a very a good turnout. Pecans are a growing industry in California; we have great weather for them,” said Hendrixson. “We do things a little bit differently because of our great weather, but we’re able to produce extremely good quality.”

“Pecans are extremely healthy,” said Hendrixson. “The research has been out there for quite some time, but the pecan industry has never had a unified marketing voice. Once we develop the Federal Marketing Order, we will be able to spread the message about health and other great benefits that will help drive interest in pecans and pecan consumption, and to deliver quality product to consumers around the world.

Hendrixson expects the Federal Marketing Order For Pecans to be in place very soon. The USDA will officially seat the Board of the American Pecan Council (APC), the new governing board of the FMO, by October 1, 2016 by calling for board member nominations, qualifying the candidates and issuing a ballot for qualified voters to vote on those nominations.

“Once those ballots are approved by the Secretary of Agriculture,” Hendrixson said, “we’ll have an elected Board that can begin to function and actually set the assessment, which in turn will be approved by the USDA going forward.”

California Ag Today2021-05-12T11:05:50-07:00August 4th, 2016|

Breaking News: The 5 Percenters May Not Receive All of Their Water Allocation

5 Percenters and Endangered Fish May Both Lose

By Patrick Cavanaugh, Farm News Director

Will the 5 Percenters—the Federal water users in California who were restricted by a 95% water allocation reduction this year—actually receive the promised 5% allocation? This scenario follows a more-than-average winter rainfall and snowfall throughout the state.

Ryan Jacobsen, executive director and CEO of the Fresno County Farm Bureau, said, “arguably it’s turned out to be much worse. Right now, for the initial 5% allocation to even be questionable right now is just absolutely insane. It all boils down to the amount of water being held up in Lake Shasta for fish purposes, which has put a major stranglehold on what’s happening down here at this point,” noted Jacobsen.

Central Valley Project (CVP) Water

At Shasta Reservoir, a keystone reservoir of the Central Valley Project, the U.S. Bureau of Reclamation essentially discharged flood releases earlier this year just to make room for the water that was expected to come in. Shasta now stands at a above average full for this time of year, because the Feds are holding all the water for release for salmon later.

This is part of the plan to have cold water available to release for the salmon. And Shasta actually has 30 percent more cold water than what they thought, and water leaders are pushing hard to get the Feds to release it for agriculture.

San Luis Reservoir at Dead Pool Status

And San Luis Reservoir is at a dead-pool status, which insures no more water can be sent south from that reservoir. Dead pool means no more water can be drawn from San Luis Reservoir, which does not bode well.

Jacobsen said, “This means our federal contractors’ 5% is in question. And that’s the irony: we were looking at such a strong year—or at least an average year [of precipitation]—and ending up now where our meager water supply is in jeopardy. This is incomprehensible and inexcusable from the federal side.”

Shasta has both federal and state water, and the federal side is essentially nothing at this point, explained Jacobsen. “Farmers rely upon San Luis Reservoir water for July and August irrigation, “and the water is essentially gone at this point,” he said. “It just shows you the major mismanagement we’re seeing from the federal side and the inability to capture water even when it is available, and not at the demise of any of these species.”

Jacobsen reiterated, “Back when the precipitation was falling [last winter], water was available at some extraordinarily high levels; yet, we never saw the increase in pumping that we would have expected under the normal conditions. “Of course, we’ve seen less pumping this year for the farmers and the cities south of the Delta,” noted Jacobsen. “During the times of the rainfall this year, it was essentially excuse, after excuse, after excuse. Some newer excuses pertained to why the pumps were not operating or operating at a very reduced capacity,” explained Jacobsen.

“The situation has been frustrating for a couple of years, but the anger continues to build because right now, this is not a ‘Mother Nature’ issue. It is completely a man-made regulatory drought that is, again, just incompetency at its best.”

“When we talk about the water stored behind Shasta [Dam] right now, really it is for the fish,” noted Jacobsen. “The most-watched fishery, at this point, is the salmon fishery. We’re in year four of this drought, but when it comes to the critical side of fish, the salmon essentially operates in three-year cycles. The last two years have been arguably two of the worst years on record for them, and this potential third year is a kind of make-it-or-break-it for salmon fisheries in the Delta region.”

Unfortunately, per Jacobsen, many decisions have been based on guesstimates. “There are a lot of folks who think we need to reserve all of this cold water for a fishery that may or may not be responding to what has been done in the past for this [contracted irrigation] water that has been given up for those purposes,” Jacobsen explained. “Right now, I think we’re doing a lot of experiments at the cost of jobs and employment, and most importantly, the farms here in the San Joaquin Valley. The frustration is that science is really not playing a big part in it. A lot of decisions are just simply, ‘We think we should be doing this versus what the science actually says we should be doing.’”

Jacobsen’s leading frustration is that all that water taken from farmers and given to fish has not helped the fish at all. In fact, the smelt and salmon numbers continue to decline. “I talk about growing frustration and anger from so many folks in the last couple of years… specifically because it hasn’t made a difference,” said Jacobsen. “An exorbitant amount of water has been given up for these fisheries, [endangered fish populations] continue to decline and crash, and as we’ve been saying for years, it is beyond time to look at just the water exporters,” he added.

Jacobsen maintains other stressors should be seriously investigated. “Many other issues taken place in the Delta should be pulled into play here, but again the regulators and the environmentalists continue to look only at the exporters as the sole issue for fish decline. There are so many other factors out there that need to be looked at,” he said.

Highly recommenced reading: “We are the 5 percenters, stretching our water supplies to get by,” by Joe Del Bosque, Contributing writer, The Orange County Register, July 14, 2016.

California Ag Today2021-05-12T11:05:50-07:00August 3rd, 2016|

Celebrate National Ice Cream Month!

Celebrate National Ice Cream Month with California Ice Cream and Flavors!

By Lauren Dutra, NAFB Summer Intern and Assistant Editor

Jennifer Giambroni, director of communications, California Milk Advisory Board

First established in 1984 by Ronald Reagan, the 40th President of the United States, National Ice Cream Month was scheduled for the month of July, with the third Sunday of the month designated as National Ice Cream Day.

Jennifer Giambroni, director of communications, California Milk Advisory Board, explained why Californians, in particular, have so much to celebrate during National Ice Cream Month. “As the number one ice cream state,” she said, “we produce 126 million gallons of ice cream a year.”

“That’s a lot of scoops!“

California also leads the nation in milk production, and 99 percent of dairies in the state are family-owned. Including milk production on farms and milk processing, the California dairy industry, supports about 190,000 jobs in the California economy and contributed about $21 billion in economic value added in 2014, according to “Contributions of the California Dairy Industry to the California Economy,” by the University of California Agricultural Issues Center (May 14, 2015).

Blueberry Ice Cream Float (Source: California Milk Advisory Board, Kristina Vanni Blogger, 2012)

Ice cream, being both timeless and innovative, has evolved in flavors and varieties over the years, according to Giambroni, while still holding true to the traditional treat you grew up with as a kid. “Ice cream is an important category that represents a lot of the milk produced on California’s more than 1,400 family dairy farms and carry the Real California Milk seal,” she noted.

“We’re seeing adult-friendly milkshakes with the addition of spirits, ice cream sandwiches made with more than cookies, and sundaes with everything from balsamic vinegar reductions to red bean paste,” Giambroni elaborated. Other new ice cream trends include hyper-indulgent flavor combinations, including nuts and fruits grown in California, and “better for you” versions with probiotics, varying levels of fat and sugar, added calcium, lactose-free, and different kinds of oils. “We’re loving the olive oil and walnut oil ice creams for their subtle flavors,” Giambroni noted.

Approximately 12 pounds of Real California Milk are used to make just one gallon of California ice cream.

Watermelon Chill Ice Cream (California Milk Advisory Board)

The California Milk Advisory Board works with bloggers on how to incorporate ice cream into events for children of all ages:

TomKat Studio – DIY Ice cream Sandwich Bar

Hostess with the Mostess – Healthy Milkshake Bar

Hostess with the Mostess – How to Set Up a Cocktail Milkshake Bar

Hostess with the Mostess – Kids Sundae Party

Check it out:

Ice Cream Sandwich (California Milk Advisory Board)

Rick’s Ice Cream–Blue Moon-A fruit loops tasting ice cream with super-secret natural ingredients

McConnell’s Boysenberry Rosé Milk Jam–Central Coast, grass-fed milk & cream and cane sugar, slowly-simmered to a thick, rich and decadent milk jam – then churned into house-made, boysenberry & rosé wine preserves.

Breyer’s Strawberry Ice Cream-packed with sun-ripened California strawberries picked at the peak of happiness!

Gilroy Garlic Festival Garlic Ice Cream-July 29-31, 2016

The Orange Works‘ Orange Ice Cream and Chili Mango Ice Cream

Where Is the Best Ice Cream in California? (PBS, 2014)

California Ag Today2016-07-23T17:33:15-07:00July 22nd, 2016|

Poultry Industry Doing Well, for Now

Poultry Industry Shines, Like a Canary in a Coal Mine

By Patrick Cavanaugh, Farm News Director

Bill Mattos, president of the California Poultry Federation, based in Modesto, reported the state’s poultry industry is doing well despite new regulations and wage increases. “First of all,” he explained, “it looks like chicken has taken over as the [category of] highest meat consumption now in the United States. It’s getting more and more popular, so that’s good,” Mattos noted.

“Also, the best thing is the industry seems to be weathering the Highly Pathogenic Avian Flu (HPAI) A (H5N1) storm,” he continued. “In California, we’re doing our due diligence with biosecurity. We don’t have any Avian Influenza. We’ll knock on wood for that.”

“The industry is also enjoying lower feed costs. That’s 60% of our cost, so that’s good news,” he added.

And, poultry industry employees have job security. “It doesn’t look like there will be fewer employees in the industry over the next few years, and we’d like to have more,” he said.

Notwithstanding the good news, challenges loom on the near horizon. “The Air Quality and Water Quality Control Boards are regulating a lot of different industries,” Mattos observed. “They’re starting to look at the poultry industry now that they have completed the dairy rules. We’re very concerned about those issues, so we are trying to work with the boards to explain to them what we do and how our business runs,” noted Mattos.

The updated minimum wage requirement may hurt the California poultry industry, another big concern of Mattos. “We supply half the chicken consumed in California. The other half comes from out of state. Without the same minimum wage requirements, we’re going to be at a disadvantage. We’re looking into the different possibilities—what we can do—to offset that.”

“You will be seeing some new things coming out from the poultry industry as we look at the ramifications of the new minimum wage,” explained Mattos. “We can’t compete with that. They are going to be taking a lot more percentage away from us, which may cost us some jobs if we don’t work this out.”

“With the minimum wage hike, California lawmakers are trying to appease workers. But it really affects businesses. Ours happen to be mostly in the Central Valley, which is the hardest-pressed area for unemployment. It isn’t a good place to have to follow wage requirements like you’re seeing in San Francisco and Los Angeles. It frankly makes no sense in the Central Valley,” said Mattos.

California Ag Today2021-05-12T11:17:13-07:00July 21st, 2016|

Lt. Governor Newsom Supports Calif. Agriculture

Calif. Lt. Governor Newsom Says Ag is at a Hinge-Moment in History

By Patrick Cavanaugh, Farm News Director

In an exclusive interview with Gavin Newsom, Lieutenant Governor of California, during the recent Forbes AgTech Summit in Salinas, Newsom declared, “It’s interesting about California—outside of Hollywood—no two more iconic industries exist than Silicon Valley’s technology, and the agricultural industry.

“It seems self-evident to everybody here that we have a unique opportunity to collaborate,” Newsom said about the event which joined the Silicon Valley high tech industry with the state’s farming industry to create digital solutions for agriculture. “We have the unique opportunity based on proximity and based on history. It is also a cultural opportunity as it relates to relationships that have been formed over the course of generations to begin to build bridges and connect some dots.”

Newsom said he believes in bottom-up inspiration, not top-down. “I don’t think you can sell down your vision from Sacramento. It’s about regions rising together and creating conditions for just these type of collaborations,” he said.

Newsom particularly appreciated comments about innovation. “I wrote a book, [“Citizenville”] and I’m not here to promote that book,” said Newsom, “but the whole idea was about platform thinking. The concept is the federal government, state government, and even local government cannot prescribe a federal, state or local pill for every problem,” he said.

“The point is,” he continued, “if we’re going to solve the big problems of the day, we have to create an environment—a platform—to engage folks like yourselves to deliver the applications, literally and figuratively, to solve big problems. It’s self-evident to anyone who lives here in California, that we’ve got some big problems.”

Citizenville, by Gavin Newsom

“We have regulatory challenges in this state, and I say this as a business person with many businesses. I have a sense of kindred connection in spirit to the entrepreneurial ways that are here today,” he commented. Owner of three wineries, several restaurants and hotels, Newsom stated, “I am in the Ag business, of sorts. My point is, we could do a lot better to make a point that [agriculture] matters and we care,” he said.

“At the same time,” he added, “Silicon Valley is center-tip of the spear—all the innovation and discovery, and the change in the way we live, work and play,” Newsom said.

“We’re here on a hinge-moment in history where we are going from something old to something new, a world of mobile, local, and social; and cloud and crowd. It’s a moment of anxiety for a lot of people, a moment of merger—the detonation of globalization and technology coming together. Again, there’s a lot of anxiety,” he noted.

Newsom suggested this is an opportune time to try to connect dots and address challenges, not just on the regulatory side and on the economic development side in this state, but also on the self-evident issues of water scarcity in this state. “You may have different opinions about climate change, global warming or violent disruption,” said Newsom, “but, as a guy who told me the other day up in Dutch Flat, Placer County, ‘I don’t care about all you folks from San Francisco talking about climate change, but something just ain’t right.’ Which is another way of describing a connection that things have changed,” Newsom explained.

Newsom said that kind of predictive nature, in terms of how we construct a water system for a world that no longer exists, and for a population that is twice the size; self-evidently, we have to do things differently. “We’ve got to be more creative and we’ve got to be more strategic,” he noted.

“It’s a long way of saying we are grateful for the work [California farmers] are doing. The goal for us in California is to make these conversations sustainable. ‘Not just situational and not just one annual conversation, but these are dialogs that must continue every day in this state,” Newsom said.

“I’m one of those people who believes in the combination of nature and technology, bringing cross-disciplines together,” Newsom said. “Cross-pollinating, literally and figuratively, ideas and people—values. “I think we have an incredible opportunity here in California, not just to survive in the agricultural industry but to truly thrive in a growing, competitive environment.”

California Ag Today2021-05-12T11:05:51-07:00July 20th, 2016|

RECYCLED WATER PROJECT FOR WATER STABILITY, PART 4

Recycled Water Project for Water Stability: Takes Shape, Part 4

By Brian German, Associate Editor and Broadcaster

As part of our ongoing coverage on the North Valley Regional Recycled Water Program (NVRRWP), we spoke with Anthea Hansen, general Manager of the Del Puerto Water District. Over the next few months the project will start to take shape following the U.S. Bureau of Reclamation signing the Record of Decision last month, the high level of cooperation taking place among all the different entities, and positive public response.

Hansen commented, “I can’t speak enough about our good experience thus far. The cities, partners and consultants on the project have come together to really advance this concept—which was all it was seven or eight years ago —into something that will become a reality.

When demands are low in the Del Puerto water district, specifically in the winter months, water deliveries can flow to storage facilities or the San Luis Reservoir for later usage when demand is high. While many areas have already been using recycled water for agricultural needs, the progress by the North Valley program has inspired some communities to improve their own water policies.

Recycled water has long been used in agriculture in other areas of the state, most notably the Salinas Valley and in the south, maybe a little bit up in the north in the winegrape country. The Del Puerto Water District currently relies on water delivered through the Central Valley Project, which had zero deliveries for the previous two years, and are only providing 5% this year. This new program has the potential to produce more than 30,000 acre-feet of water per year as soon as 2018.

NVRRWP map (Source: www.nvr-recycledwater.org/description.asp)

Among an estimated 100 recycled water projects in various stages of development throughout the state, Hansen stated, “For the Central Valley, I think this is definitely a big first. We received about 14 public comments on the joint environmental document. Of those 14, three or four were letters of support, and we received some broad support from the environmental community.

A project of this magnitude to deliver needed water stability could also be accomplished in other dedicated communities, according to Hansen. “We believe this project to be a model for other municipal and agricultural agencies in ways to regionally solve issues together, and hopefully, it will be a model for the nation.”

Anthea Hansen, general Manager of the Del Puerto Water District

“Hopefully,” said Hansen, “people are looking at this as a good example of ways to think outside the box and use available technology to solve problems locally and regionally, which is what we have been forced to do here on the Westside.

“With all the complexities of California’s plumbing,” explained Hansen, “it would be impossible for a small district like Del Puerto to really affect any of the big picture changes, but we certainly do have the ability to affect how we act locally and regionally. I also think the Central Valley has not historically been a magnet for a lot of assistance, programs or changes that work to our benefit, so we have to devise these for ourselves or we’ll be out be of business. I’m very thankful that the two cities—Modesto and Turlock—on the east side of the river in our county, were willing to work with us, and I think we have a good partnership going forward.”

The North Valley Regional Recycled Water Program (Phase 3) won the 2015 Excellence in Environmental Engineering and Science™ Competition – Honor Award – Planning from the American Academy of Environmental Engineers & Scientists.

California Ag Today2021-05-12T11:05:52-07:00July 19th, 2016|

Solving Central Valley Water Salinity

Mizuno on Water Salinity Solutions

By Laurie Greene, Editor

According to a Central Valley Salinity Alternatives for Long Term Sustainability (CV-SALTS) report, rising salt levels in the soil and groundwater threaten the potable water supply and agricultural productivity for the entire region. Walter Mizuno, longtime lecturer in mechanical engineering at Fresno State and director, Valley Industry Partnership for Cooperative Education (VIP) Program, researches increasing salinity conditions in Central Valley soil and groundwater, as well as methods of desalination.

Mizuno explained, “As the salt level rises, and if the soil salts aren’t leached out periodically, the ground becomes unsuitable for cultivating several crops. Growers either shift to high salt-tolerant crops or essentially idle that land.”

Central Valley salinity conditions are serious, according to Mizuno. “Growers have already taken a lot of land out of production on the Westside,” he said, “and they’ll continue to do that until the salt mitigation measures have been implemented. Essentially, we need to get back to where we can currently sustain the amount of farming we have with the type of water that we have.”

“We are looking at desalination of agricultural drainage water,” Mizuno stated. “We’re trying to reclaim water that’s suitable for even human consumption; but right now, we’re looking at reclaiming water that is suitable for Ag use through a desalination process called vapor compression distillation, which takes drainage water from the Ag fields, distills it to make it pure and recovers some of the salts on the backside.”

Mizuno explained salt recovery would enhance the economic viability of this project by eliminating the cost of trucking or disposing the resulting brine and by possibly converting it into a revenue stream. “We’re trying concentrate that brine to a point, using solar evaporation, where we can find other uses for the highly concentrated form or maybe even sell it to a chemical processing company. We are also focusing on minimizing the energy cost to distill the water, to make the process more efficient.”

“We’re trying to combine multiple technologies, using ion exchange as our front end process,” Mizuno explained, “to get rid of some of the hardness in the water. We get rid of calcium and magnesium in the water, which helps the distillation process and protects the equipment for a longer period of time before requiring cleaning or eventual replacement. We’re using the brine stream of the distillation process to actually regenerate, upfront, the ion exchange units—similar to a home water softener.”

Mizuno explained, “When you look at the reasons why desal isn’t used more often—just the cost of energy makes the cost of the water expensive. So, we do a lot of energy recovery. Just take the basic process of distillation in which you heat up the water solution, boil it off, and condense the residue. A lot of that water you use, or a lot of the energy used to boil off the water, is lost; so we recover the heat from that steam to save energy. In other words, we don’t discard that energy; we try to reuse it.”

“We have been conducting studies on some Westside ranches,” he continued, “with our pilot plant that processes only one thousand gallons per hour. A series of ditches on those ranches collect the drainage water to be purified. Now, we have moved everything back to the Fresno State Center for Irrigation Technology (CIT),” said Mizuno, “because we’re building a brand new redesigned unit, which should be operating by the end of this year.

“The second phase of the project,” Mizuno commented, “is to move the unit out to Panoche, and conduct field testing out there. We will evaluate the energy efficacy and also the economics of the unit and process, and we will field-test to determine how rugged and dependable it is out in the actual service area.”

“This is actually a research project,” Mizuno clarified. “We’re still fairly far away from commercializing it. Basically, we will evaluate the scalability of these units so that depending on the size of the farm and everything else, you can either put multiple units out there or design a single-unit system very similar to ours. You could size the system to meet whatever the demands are, but you need a reservoir or holding area, and you’d like to be able to operate 24/7.”

“We are considering using solar to power this,” Mizuno mentioned. “The issue with solar is, obviously, it tends to work during the daylight hours but doesn’t do much during the evening hours. We’re looking at using batteries, electricity, natural gas or some other energy source to keep the process running when the sun goes down, but it’s a matter of economics.”

Mizuno said the research team is optimistic about the process itself, but he does not anticipate it will be a cure-all. “It is a research project,” Mizuno reiterated, “and we’re trying to see if we can drop the energy cost, and lower the water cost. I think the economics will change though. Water will cost more for everybody in the next few years. As that changes, I think some of these technologies are going to become feasible from an economic standpoint.”

The entire state shoud be aware of these water issues, according to Mizuno. “I think there are still a lot of issues that the common person isn’t aware of and how they fit in, and Ag is no exception. I would like people to understand that we are working to stretch the available amount of water supplies we have and we are working on technologies that are yet unproven. But some of these technologies will require a few more years—to many years to solve. Others are not economically feasible today, but they may be in the future as water supplies get tighter.”

Mizuno has observed that farmers are already doing a lot to conserve water, particularly employing the use of new technologies such as drones to evaluate water stress and nutrient stress in plants. “Right now,” he offered, “we are looking at another piece of the puzzle; we’re trying to stretch the amount of water supply we have, utilize it in multiple-use scenarios, and use it more intelligently to make some waste streams into revenue streams.”

Mizuno urges the general population to just be aware. “Conservation is the first step for a lot of people,” he said. “That’s the easiest way to stretch water supplies, and so I think people need to understand that water is a finite resource in the state of California. The water situation is not likely to get better anytime soon, even if we have normal rainfall and so forth. We are in an overdraft situation with our water supply.”

CV-SALTS participants collaborate to develop a workable, comprehensive plan to address salinity, including nitrates, throughout the region in a comprehensive, consistent, and sustainable manner.

Center for Irrigation Technology (CIT) celebrates 35 years!

California Ag Today2021-05-12T11:05:52-07:00July 18th, 2016|

BREAKING NEWS: ACP QUARANTINES IN MERCED AND MONTEREY COUNTIES

ASIAN CITRUS PSYLLID (ACP) QUARANTINES IN MERCED AND MONTEREY COUNTIES

Quarantines are now in place in both Merced and Monterey Counties due to recent Asian citrus psyllid (ACP) detections. One ACP was detected near the City of Merced in Merced County and two ACP in one trap within the City of Salinas in Monterey County.

The quarantine zone in Merced County measures 123 square miles, bordered on the north by Kenney Avenue; on the south by W Dickenson Ferry Road; on the west by Shaffer Road; and on the east by

SAVE OUR CITRUS app is a free USDA iPhone to report and identify the four leading citrus diseases: citrus greening, citrus canker, citrus black spot and sweet orange scab. Report your symptoms, upload a photo and citrus experts will respond. ACP

E Yosemite Avenue. Monterey County’s quarantine measures 111 square miles and is bordered on the north by Pesante Road; on the south by the Salinas River; on the west by Castroville Road; and on the east by Gabilan Creek. The quarantine maps for both Merced and Monterey Counties are available online at: www.cdfa.ca.gov/go/acp-maps. Please check this link for future quarantine expansions in these counties, should they occur. Quarantines in new counties will be announced separately.

The quarantine prohibits the movement of citrus and curry leaf tree nursery stock, including all plant parts except fruit, out of the quarantine area and requires that all citrus fruit be cleaned of leaves and stems prior to moving out of the quarantine area. An exception may be made for nursery stock and budwood grown in USDA-approved structures which are designed to keep ACP and other insects out. Residents with backyard citrus trees in the quarantine area are asked not to transport or send citrus fruit or leaves, potted citrus trees, or curry leaves from the quarantine area.

ACP county-wide quarantines are now in place in Imperial, Los Angeles, Orange, Riverside, San Bernardino, San Diego, Santa Barbara, Tulare and Ventura Counties, with portions of Alameda, Fresno, Kern, Kings, Madera, Merced, Monterey, San Benito, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Clara, and Stanislaus counties also under quarantine.

The ACP is an invasive species of grave concern because it can carry the disease huanglongbing (HLB), also known as citrus greening. All citrus and closely related species, such as curry leaf trees, are susceptible hosts for both the insect and disease. There is no cure for HLB and once a tree becomes infected, the diseased tree will decline in health and produce bitter, misshaped fruit until it dies. In California, HLB has only been detected on residential properties in Los Angeles County. This plant disease does not affect human health.
Residents in the area who think they may have seen ACP or symptoms of HLB on their trees are urged to call CDFA’s Pest Hotline at 1-800-491-1899 or your local agricultural commissioner’s office (Merced County (209) 385-7431; Monterey County (831) 759-7325). For more information on the ACP and HLB, please visit: www.cdfa.ca.gov/go/acp.

California Ag Today2021-05-12T11:05:52-07:00July 14th, 2016|

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