Field Crops

More Rain, More Fungi, More Use for Multiuse Fungicides

With More Rain, More Fungi, More Use for Multiuse Fungicides

By Patrick Cavanaugh, Deputy Editor

With spring rains, many vegetables, tree fruits, grapes and nuts succumb to fungi pressure. However, during the past few years, only trivial amounts of spring rain have moistened California’s soil and lulled farmers to abandon their vigilant watch for fungi proliferation. But now, the strong likelihood of El niño-driven wet weather this spring could catch growers off-guard.

“We have an El niño coming that has already been tagged, ‘Too big to fail,’ which will bring a lot of rain. So it’s really important for folks to think about switching gears this year on their pest management mindset. With more rain, comes more fungi disease. We always see really high pressure disease years with rain,” said Kate Walker a technical services representative with BASF Corporation on the Central Coast, who advises use of a multiuse fungicide product already on hand.

Anthracnose in Strawberries, UC Statewide IPM Project

Anthracnose in Strawberries (Source: UC Statewide IPM Project

Strawberries, in particular, are vulverable to fungi. “We have heard from our strawberry growers,” said Walker, “that these fungal diseases are always present in California, but they vary significantly in their severity year-to-year depending on the weather,” noted Walker.

“One major disease that accompanies higher moisture, Anthracnose, often called leaf, shoot, or twig blight,” Walker explained, “results from infection caused by the fungus Colletotrichum. I’ve heard some growers have not experienced Anthracnose issues in 10 years,” said Walker. “As it emerges and becomes more problematic in strawberries, farmers really need to know which types of fungicides to use to manage this and other diseases.”

“It is very important for farmers and PCAs to walk through and scout their fields for disease,” Walker said, “and when they identify one, to become very aggressive with their fungicide management program. So, as representatives for BASF, we are lucky to have multiuse fungicide products available to control these diseases, such as Merivon Fungicide.”

Walker noted Merivon has two modes of action, “so it is very broad-spectrum. Typically we position Merivon in California for use on powdery mildew and Botrytis, but what we seldom talk to growers about is its utility for Anthracnose. We see a lot more  Anthracnose in Florida and on the East Coast due to the increased rains; whereas, it usually doesn’t come through every year in California. So it is good to for farmers and PCSs to know that the product with which they are familiar for use in Botrytis, is also very effective with other issues, like Anthracnose.”

Walker offered, “Another very common disease that flourishes with increased rain, Rhizopus, occurs post-harvest, after the berries are picked up from the field. Again, Merivon has utility for Rhizopus as well, so growers don’t have to change or reinvent their program to manage these diseases.”

Walker said, “Rhizopus is an airborne bread mold. It is very common in the air and in the soil, so anytime a fruit or a nut is exposed to the spores blowing in the wind, it is vulnerable to infection with this disease.”

2016-05-31T19:27:02-07:00December 4th, 2015|

Thanks to California Ag!

Thanks to California Ag for Thanksgiving!

By Patrick Cavanaugh, Deputy Editor

 

As Americans enjoy Thanksgiving dinner, let us recognize that farmers, especially California farmers, have made our bounty possible.

pumpkin free imageCalifornia is a big turkey producing state, always ranking in the top six nationally.

pumpkin free imageIn 1948, Sophie Cubbison, who was born in San Carlos, California and who graduated from California Polytechnical University in 1912, invented the Mrs. Cubbinson’s melba toast or cornbread stuffing most of us serve. (She even paid her way through college with the money she earned feeding farmworkers. Sourcewww.mrscubbisons.com)

pumpkin free imageWhat would Thanksgiving be without wonderful California wines and Martinelli’s (another great California company) great sparkling apple and grape beverages to celebrate our good fortune?

pumpkin free imageAnd all those amazing side dishes . . . the russet and red potatoes from Kern County; the sweet potatoes from Merced County; the many wonderful squash varieties including zucchini, yellow, acorn squash . . . are all produced by farmers and farmworkers in California.

pumpkin free imageGreen beans, lettuce, tomatoes, olives, cucumbers, radishes, and carrots will grace the tables across America, thanks to California producers in ped and other areas of the state.

Don’t forget gapumpkin free imagerlic, onions and mushrooms are all produced primarily in California!

California farmers produce it all, with the exception of cranberries!

Thanks Wisconsin!

(And New Jersey, Massachusetts, Oregon, Washington, and parts of Canada)

pumpkin free imageYou can thank California egg producers for those tasty hardboiled deviled eggs on Grandma’s favorite serving dish.

pumpkin free imagePlus raisins, a great addition to dressings and other dishes, thanks to the raisin producers in Fresno, Madera and Merced Counties.

pumpkin free imageAnd of course walnuts, almonds and pistachios are big part of our savory stuffing recipes and our snacks.

pumpkin free imageApple cider and apple pie? California, among the top five states, produces a wide variety of apples.

pumpkin free imageWait! What about pumpkin pie? California farmers.

pumpkin free imageAnd the wonderful whipped cream? Thanks to the California dairy industry.

pumpkin free imageDid you know the turkey pop-up timer was invented in California? Yes, indeed. Back in the 1950s, the California Turkey Producers Advisory Board brainstormed to figure out how to prevent over-cooked turkeys, according to Leo Pearlstein, a Los Angeles pubic relations pro in the food industry, who was among the five original board members. One board member—a California turkey producer, as Pearlstein tells it—looked up at the ceiling, noticed the sprinklers and had a Eureka moment! He suddenly realized the ceiling sprinklers were triggered when heat melted a material inside the gizmo. For a complete explanation, see How Pop-Up Turkey Timers Work at home.howstuffworks.com/pop-up-timer1.htm.

From all of us here at California Ag Today,

Thanks to California Ag for serving us a delectable nutritious Thanksgiving!

2016-05-31T19:27:03-07:00November 24th, 2015|

Fresno Ag Awards

Joe Del Bosque and Earl Hall Receive Ag Awards in Fresno

By Charmayne Hefley, Associate Editor

At the Fresno Chamber of Commerce’s Annual Ag Awards Luncheon on Oct. 28,  Westside farmer Joe Del Bosque and businessperson Earl Hall, owner of Hall Management Corp., a labor contracting company, received awards for their commitment to agriculture.

Honored as the Chamber’s 2015 Agriculturalist of the Year, Del Bosque, owner of Del Bosque Farms in Firebaugh, said, “It’s an honor to be here, and I’m so surprised to see not only my family here, but a lot of my friends as well as community leaders that I know. I’m just so pleased to have them attending and supporting. It really is an honor and I’m humbled. I mean, I saw the list of the folks who have been given this award; they’re some of the big leaders that I always look up to.”

Earl Hall

Earl Hall, owner of Hall Management Corp.

Del Bosque was honored for his open farm policy of allowing bloggers and city folks to visit his operation and observe what farming is all about. He also hosted President Obama on an historic visit on Feb. 14 2014. Del Bosque farms almonds, melons, cherries and asparagus and relies on his farm employees to get the crops harvested. He also is a governor-appointed member of the California Water Commission, a public forum to discuss water issues, advise the Department of Water Resources (DWR) on water policy and decides what storage projects to build with 2014 Water Bond funding.

Hall’s Kerman-based company, Hall Management Corp, received the Baker Peterson Franklin’s Ag Business Award. Hall said his company manages the farm production and all of the labor—all of whom work directly for his company—for several different agricultural companies across 500 thousand acres. “We do business in 26 counties around the state,” said Hall. “I’ve been doing this for 50 years, and it’s quite an honor that our company has been recognized today as the ag business company of the year. I have to give all the credit to my people.

____________________

Founded in 1917, Baker Peterson Franklin, CPA, LLP is a full-service, locally-owned accounting and consulting firm in Fresno, California with a 45+ person staff.

With a membership of more than 1,400 businesses and organizations, the Fresno Chamber of Commerce promotes and supports the success of the regional business community through effective advocacy, education and relationship building.

2016-05-31T19:27:04-07:00November 3rd, 2015|

Winegrape Rootstock Trials

Winegrape Rootstock Trials for Pest Resistance and Vine Productivity

By Patrick Cavanaugh, Deputy Editor

Larry Bettiga, a viticulture farm advisor with UC Cooperative Extension, Monterey County, is working with county growers on winegrape rootstock trials to increase vine productivity.

“Several things have happened,” noted Bettiga,“we are replanting vineyards on former vineyard lands, where a build-up of soil pests already exists. Farmers used to grow a lot of beans and tomatoes in the Valley, so we’ve had a lot of root-knot nematode populations from past cropping patterns.”

“We’ve recently seen ring nematode populations developing at multiple vineyard sites,” Bettiga continued. “With the loss of more effective fumigants, and then the loss of post-plant-type nematicides, the use of nematode-resistant roots is becoming more critical to the success of replanting these vineyards. We have hopes that Andy Walker, a UC Davis viticulture professor and grape breeder, is going to supply us with some better options than we currently have.”

“We have a site where we are comparing five new rootstocks that were released from UC Davis with a number of our standard rootstocks. We are just starting that work, so obviously we have to look at them for several years to get a good feel for how those stalks will fit in comparison to what we are now using,” he noted.

2016-05-31T19:27:05-07:00October 30th, 2015|

Groundwater Recharge at Terranova Ranch

Major Groundwater Recharge Program at Terranova Ranch Progresses

By Patrick Cavanaugh, Deputy Editor

Don Cameron, manager of Fresno County-based Terranova Ranch has been working with the Kings River Conservation District (KRCD) on a groundwater recharge plan for nearly 20 years to convey floodwaters from the Kings River across Terranova Ranch and other properties in the area. “It has been a long, hard, committed struggle,” said Cameron, “but in 2011, we got Natural Resources Conservation Service (NRCS) involved.

“Once we submitted our grant application to the California Department of Water Resources (DWR), they reviewed it and awarded us a $5 million grant, which really got the project off the ground,” said Cameron.

“We are in the third year of work with the grant and we are currently doing the environmental studies with California Environmental Quality Act (CEQA). We are still very much involved in the engineering phase and we are putting a lot of agreements together with all the neighboring agencies that we have to work with,” Cameron said.

Logistically, Terranova Ranch is in an ideal location to capture potential floodwaters from the Kings River. Adjacent to the North Fork of the Kings River where floodwaters move though the James Bypass to the Mendota Pool, Terranova Ranch, provides the operation a unique opportunity in terms of groundwater recharge.

“We are taking farmland that is in production, and when the floods come, we will direct floodwaters across that land and neighboring land, to recharge the groundwater in our fields,” said Cameron. “We have proven that we can recharge in existing vineyards and tree-crop orchards, as well as in tomato, onion and carrot fields before we plant. We can use the floodwater across our farmland so that we do not need a dedicated basin dug out just for a recharge.”

“We know we can recharge anywhere on our land,” explained Cameron. “We can even turn off our pumps and use the water on the land to irrigate, through our drip systems. There are a lot of different ways to attack the problem. We think this is the best fit for our area, and we hope to be successful in rebuilding our groundwater supply,” said Cameron.

“The plan is to dedicate about 250 acres of ground for recharge,” said Cameron. Low levies will be built around the land when floodwaters are anticipated. We may have crops planted on the fields,” but Cameron hopes to be able to predict floods prior to planting a crop. Nevertheless, Cameron said, “We will flood crops if we need to.”

When the fields are flooded, the water may be as much as 2 to 3 feet deep, or as little as six inches deep. But the goal is to keep the water continuously on those fields to continue the recharge.

And since this is a large project involving state money, CEQA must be involved. Cameron emphasized, “We want to be sure that there is no environmental damage to any possible endangered species anywhere near our farm or near the project we are doing. There are state and federal laws that we have to abide by and so we need to jump through those hoops to get the project approved to completion,” said Cameron.

“We have been working with the project for a long time and we think its time has come,” said Cameron. “We are in the fourth year of a drought now and there is a lot of interest in putting water underground now, rather than building dams. We think dams are necessary as part of the overall water storage for irrigation, but we need both aboveground and below-ground storage.”

Cameron contends this groundwater recharge plan could improve groundwater quantity and quality fairly quickly, and be implemented faster than trying to build a large dam in the state. “We want to do our part here,” he said. “We would hate to see all the floodwater flow by during flood periods. It’s smarter to capture those stormwater flows on the land and into the ground water reservoir. We think it’s a real win for the whole state,” he said, adding there has been a lot of interest in duplicating this type of project throughout the state.

Cameron noted the project is perfect for the Sustainable Groundwater Management Act, which went into effect Jan. 1, 2015. “We are going to be ahead of the game on this, which is where we want to be,” he said.

Yet, not fast enough. Though a sizeable El Niño may pound California this fall and winter, bringing potential floodwaters to many rivers, the paperwork for the Terranova Ranch recharge program will not be completed in time. Cameron and the KRCD have been pushing to complete the project, but the agencies that need to sign off are numerous, including:

  • California Department of Transportation (Caltrans) – because floodwaters will be moving to additional landowners east of 145.
  • Pacific Gas and Electric Company (PG&E) – because water will need to flow under a natural gas pipeline.
  • U.S. Army Corps of Engineers – because a major cement structure with gate valves must be in place for the floodwater to be extracted from by-pass. “This will essentially mean that the levies will be breached,” said Cameron.

Again, the floodwaters will be flowing north and to the east, to several landowners in the region. Cameron and KRCD have been doing all the setup for everyone, not just themselves. “We hope, in long term, to expand the recharge project to 16,000 acres,” said Cameron.

2016-05-31T19:27:05-07:00October 26th, 2015|

Joe Marchini, Mr. Radicchio

Joe in truckJoe Marchini Brings Radicchio to California

By Patrick Cavanaugh, Deputy Editor

Joe Marchini, of J. Marchini Farms, was born in 1938 to Italian parents who farmed and packed tomatoes in Le Grand, Calif. Marchini has lived and worked in that locale for his whole life, exemplifying a high level of spirit and accomplishment.

His father, Florindo Marchini, brought his family over from Tuscany in 1920.” They settled in Le Grand because Florindo’s brother was already living there when Florindo first arrived. Before long, Florindo met a long time grower by the name of Carlo Giampaoli who invited Marchini to grow tomatoes and bell peppers with him. So Giampaoli took Florindo Marchini under his wing, and his brother as well, and established their farm, Giampaoli-Marchini Company. Together, they packaged tomatoes under the Live Oak brand because they actually packed the produce by hand in the shade of a live oak tree that still thrives there today!

Florindo’s son, Joe Marchini, was around seven when he began working at the packing shed stamping produce boxes. “I would sit on a box,” he said, “and as they came down the line, I used a little stamp pad to size tomatoes 6/6, 7/7, 7/8, 5/6, 4/4, 3/4. I only worked about 3-4 hours a day, and that was it. The older I got, the more I became involved in different things, from stamping, to packing, to wrapping tomatoes in cellophane paper and putting them in a box.”

The tomatoes were packed green and transported back east by train in ice cars. “They weren’t pink ones; no, they were dead green! They knew when to pick them, when the gel formed inside of the tomatoes,” Marchini said. “They could tell by the color and the shine of the tomatoes, and that’s what the pickers were supposed to pick. They were going to break soon. It took about a week, running day and night, to get to New York on steamer trains.”

“The early farming venture was comprised of 150 acres, which was a lot of acreage with horses,” said Marchini. “In the fall, we would travel to Gustine and cut tulles and bamboo for our tomato stakes.”

“My two brothers, Richard and Leonard Marchini, went to school with me. None of us could speak any English; we only spoke Italian,” Marchini said. So they all learned English in a small schoolhouse with two classrooms and one teacher.

“My dad grew tomatoes on that land for two years and then planted 40 acres of almond trees. The almonds were harvested green and then dried down by air.” Of course this was before mechanical shakers were used to harvest, so it was done with mallets and tarps. “It was very tough work,” noted Marchini, “and the price of almonds was less than 60 cents a pound.” Marchini credits Blue Diamond Growers, a cooperative he joined, with marketing the almonds so prices could increase.Radicchio

 


Mr. Radicchio

Not satisfied with growing only tomatoes and almonds, Joe Marchini was always looking for something new to grow. In 1962 on a trip to Italy, Joe noticed fields of radicchio, a leafy Italian chicory and relative of endive, in the Venice area and found the crop was selling well in Italian grocery stores. He said, “I liked the crop and thought it would grow well in California, so I smuggled in little packages of seeds.”

Unfortunately, the seeds he brought back did not grow well. “Radicchio production wasn’t perfected and the source I had in Italy did not tell me what season the seeds were for.” Marchini’s radicchio would grow and form green leaves but not make a head. So Marchini went back to Italy, 40 miles southeast of Venice, to talk to growers, but no one would talk. “I certainly could not tell the guys that I was going back to the U.S. to grow the crop,” he said.

Marchini finally found a couple of growers to ship a 100-pound sack of seeds to San Francisco for him. “I picked up the bag, planted the seed and the same thing happened—it didn’t grow.” He called the Italian growers and asked how many different radicchio varieties they were growing. They told him eight varieties. “I asked them why they sent me only one variety, why they did not tell me when to plant the seed, and if they wanted me to buy more seed, they had better tell me what varieties to grow,” he said.

“Since I spoke Italian, the growers started to open up. Eventually, I brought them to the U.S., and we partnered up to grow radicchio. I even sent them to Mexico because they thought they could produce an earlier crop than in California,” Marchini said. After reaching mediocre success for about four years in Mexico, they moved back to California to work with Marchini, now without a partnership.

The company now productively farms in Mexico with the right seed. “We farm in Mexico for the winter crop in February, March and April. But before we started growing in Mexico, in the late 1970s, we started in Salinas and then in the San Joaquin Valley. The Italian growers knew what to plant and we got all the varieties in the right mode that would do well. The Italians wanted to be partners again and I declined it because I had kids coming up, but I told them that I would buy all the seeds from them, and they were making good money. So they ended up disclosing the secret in the whole deal of growing radicchio. So without them, and me speaking Italian, we would have never gotten started. We are still friends today and I’m still buying seed from them,” Marchini said.

Over the years, Marchini has worked with his son Jeff to plant the right seed at the right time. They learned which varieties could handle different climates, such as going into the heat, and coming out of the heat, and they emerged with 6 or 7 dependable varieties.

“So we plant six varieties in the fall, one week after the other. We can have radicchio in the San Joaquin Valley from November until March, and we harvest seven days a week.

His processors want radicchio 12 months out of the year, so Marchini’s company manages harvesting to fill the sales pipeline 12 months a year. “And we never run out of it,” he said.

Joe's Premium LogoToday, Marchini uses about 12 different labels, including his own image on the ‘Joe’s Premium Radicchio’ box, for the domestic market and select export markets. “We let global importers pick their own labels. J. Marchini ships all over the world now, including Italy, and has a large percentage of the market in Japan, Korea and Taiwan. “They love the color of radicchio in a blend,” he said.

J. Marchini deals with nearly every processor in California including Taylor Farms, Apio, Fresh Express, Dole, Earth Bound, and Ready Pac, year-round, with production from Kern to Merced counties and Mexico.

Managing all this production with Joe and his son Jeff (the third generation), are grandchildren Marc and Nic and Francesca (fourth generation), with the fifth generation coming along with Gabriella, Maximus and little Giuseppe, named after his great-grandfather Joe (Giuseppe). Marc and Francesca work in the sales and post-harvest side of the business. Nic works in the farming operation side of the business. Jeff oversees the company as a whole.

Overseeing production, and especially the harvest of the radicchio throughout the growing regions, including Mexico, is Alejandro Calderon, Joe Marchini’s right hand since day one. Jenny MacAfee, a key person in the sales department, has been on board for the last 20 years.

Today Marchini farms three main radicchio varieties: Castelfranco (white head with red polka dot specks), Treviso (elongated red with white ribs), and Palo Rosa (red head type with white veins). “We do a three-pack deal in the wintertime with all three varieties together, but we also grow many other varieties,” said Marchini.

J. Marchini Farms’ production operation, based in Watsonville, a great climate for radicchio in the summer months, includes 2,000 acres spread between the Central Valley, the Coastal areas and Mexico.

The Central Valley fall and winter nighttime temperatures are cool, and radicchio production, five lines down the row on 80-inch beds, is about 20,000 pounds per acre, with most of it on drip or sprinkler.

The operation also grows almonds, walnuts, fresh figs and other crops, “but radicchio has been a good ride,” said Marchini. “We have had ups and downs with the crop, but overall it has provided a good cash flow,” he said.

 

For the last three years, Joe Marchini has been dealing with Squamous Cell Carcinoma (the second most common form of skin cancer) and has undergone multiple surgeries and treatments. His love for his family and his incredible passion for farming keep him going.

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J. Marchini Farms

2016-05-31T19:27:06-07:00October 16th, 2015|

Bayer CropScience Horticulture Symposium Builds Relationships

Bayer CropScience Horticulture Symposium Builds Global Relationships for Collaborative Problem-Solving

By Patrick Cavanaugh, Deputy Editor

 

Nearly 200 professionals in the horticultural industry from across the food chain and the value chain, and from Europe and North, Central and South America, gathered this week at the Bayer CropScience Horticulture Symposium in Puerto Vallarta, Mexico. Attendees were treated to an inspirational mix of lectures, panel discussions, as well as an interactive poster session, all incorporating forward-thinking sustainable practices into contemporary agriculture. Among the crops discussed were tomatoes, citrus, grapes, potatoes, bananas.

Rob Schrick, strategic management lead, Bayer CropScience Horticulture, based in Research Triangle Park, North Carolina, said the event was the company’s second in a series of horticulture symposiums focused on international collaboration and problem-solving. “This is about bringing the best and brightest from across our industry,” said Schrick, “from influencers and universities to industry members like ourselves and the media. It’s about getting these creative minds together and discussing solutions. The solutions may not come from the symposium itself, but the connections that are made—you don’t know what will yield from those relationships.”

Jim Chambers, director of marketing, Bayer CropScience Food Production, said the Horticulture Symposium was all about sharing information on best management practices. “Bayer is a leader in the crop protection business within the horticultural space around the world, and this is a real opportunity to bring all of us within horticulture across the food chain and the value chain to talk, from the grower, to the processor, and to the consumer. It is a wonderful opportunity to work together to solve some very difficult challenges.”

“And, vivid to all attendees, was that members of the fruit and vegetable industry throughout the Americas have similar challenges to overcome,” noted Chambers. “It was very interesting; the issues that we talk and hear about in the specialty crop states such as California, Florida and Texas, are very much the same issues that people, for example in Mexico, Brazil, Argentina, or Central America, are facing. These issues do not go across just states or counties; they reach across the globe in solving these problems,” Chambers said.

Among the speakers were growers, commodity specialists from the industry and academia, and experts on sustainability practices, professionals on Maximum Residue Levels (MRLs), Bayer CropScience specialists and major agricultural association leaders such as Tom Nassif, ceo, Western Growers Association (WGA) and Dana Merrill, president, Mesa Vineyard Management Inc.

Bayer is a global enterprise with core competencies in the Life Science fields of health care and agriculture. Bayer CropScience, the subgroup of Bayer AG responsible for the agricultural business, is one of the world’s leading innovative crop science companies in the areas of seeds, crop protection and non-agricultural pest control. The company offers an outstanding range of products including high value seeds, innovative crop protection solutions based on chemical and biological modes of action as well as an extensive service backup for modern, sustainable agriculture. 

(Photo features Rob Schrick, Bayer CropScience – Horticulture strategic management lead)

2016-05-31T19:27:08-07:00October 2nd, 2015|

Water and Nitrogen Use Research

Andre Biscaro on Water and Nitrogen Use Research

By Charmayne Hefley, Associate Editor

 

Many jobs exist solely for the improvement of agriculture. Andre Biscaro, agriculture and environmental issues advisor at the UC Division of Agriculture and Natural Resources, Cooperative Extension, Los Angeles and Ventura Counties said his job is to find ways to improve water and nitrogen use in fertilizing crops such as strawberries and celery.

“We’re measuring how much nitrogen the plant takes in and at what time,” Biscaro said, “so we can make more accurate recommendations for nitrogen fertilizers. It’s the same for water. We’re monitoring the crop growth of the strawberry plants—how deep the roots go and how the canopy develops—so we can make more accurate water recommendations. We’re assessing fields in Santa Maria and we are implementing the second phase here in Ventura County, Santa Maria and Watsonville.”

Biscaro is researching in strawberries and celery how to push salts in the soil beyond the root zone, the point beyond which plants will generally seek water unless they are stressed. “It’s essential to install soil moisture sensors at the end of your root system,”Biscaro said, “to make sure the soil is saturated every time you irrigate and then you need to push the water down. And it’s also really important to calculate the amount of water you’re applying because a lot of growers are irrigating without knowing how much water they are applying.”

“We calculate the leaching fraction [the portion of irrigation water that infiltrates past the root zone] based on the sensitivity of the crop to salinity and to the salinity of the water,” Biscaro explained. “And by only knowing how much water you’re applying, you can add a certain leaching fraction to your crop,” Biscaro said.

Nitrogen and water

2016-05-31T19:27:09-07:00September 29th, 2015|

Lygus Bug Control in Strawberries

Lygus Bug Control in Strawberries Can Prevent Significant Damage

By Patrick Cavanaugh, Deputy Editor

Adult Lygus Bug, Jack Kelly Clark, UC IPM

Adult lygus bug, Lygus hesperus.
(Photo by Jack Kelly Clark, UC IPM)

In the coastal areas of California where the majority of strawberries are grown, the top pest pressure comes from the lygus bugHillary Thomas, senior production research manager with Watsonville-based California Strawberry Commission, works on lygus bug control in strawberries, as it causes significant damage to the crop each season.

“We conservatively attribute between $150 and $250 million in damage each year to the lygus bug alone,” Thomas said. “We have only a few tools to handle this pest, including insecticide and vacuums, that can be used for the strawberry industry.”

Thomas explained vacuum use is widespread by both conventional and organic growers despite its drawbacks, beginning with the huge investment required by the grower. The vacuum is generally tractor-mounted with three or four vacuum fume hoods to one hydraulic system, and the entire vacuum system runs off the tractor’s PTO (power takeoff). The vacuum is so difficult to remove, it is typically installed on the tractor for the entire season.

Therefore, current research aims to make the vaccuum more useful, according to Thomas, by focusing on technological innovations to improve vacuum efficiency. She explained, “We are literally trying to suck up as many bugs as possible by moving the largest cubic volume of air and killing all the insects that move through the vacuum. We have created some standard operating procedures for vacuums as well as recommended short-term modifications to improve their efficiency by 25 percent. The Commission has also developed a series of trainings to disseminate information on the best management practices vacuums for growers.

2016-05-31T19:27:09-07:00September 28th, 2015|

Celery Management Research

Andre Biscaro on Celery Management Research to Improve Water and Nitrogen Use

By Charmayne Hefley, Associate Editor

logo-celery-sm

Ongoing research continually improves the agriculture industry. Andre Biscaro, agriculture and environmental issues advisor at the University of California, Division of Agriculture and Natural Resources, Cooperative Extension, Los Angeles and Ventura Counties, described current trials in celery management research, sponsored by the California Celery Research Advisory Board.

“We’re monitoring water and nitrogen use based on best management practices,” Biscaro said. “We evaluate ‘best management’ practices using the soil nitrate quick test. That gives us a really good estimate of how much nitrogen is in the soil, and we can accomplish the test in just about an hour.” The trial also incorporates data from weather stations to calculate the amount of applied water.

Celery“This trial and research actually monitors the amount of water and nitrogen we’re using and how much yield we’re getting under various best management scenarios,” Biscaro said, “and compares our practices to what the grower usually does.” Ultimately, the trial will help determine the yield of a celery field using best management practices, and how much water and nitrogen are required to achieve that yield.

Biscaro said the grower he has been working with to conduct the trial was already highly successful with soil and water management in the specific celery field under study. “He really knew what he was doing, and the nitrogen management was quite decent as well. So I believe there are opportunities for improvement in the industry, but the grower was actually doing quite well in this particular field I monitored.”

 

2016-05-31T19:27:09-07:00September 25th, 2015|
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