Brexit Hurts Wine Exports To U.S.

Brexit-Devalued Pound Hurts Wine Exports To U.S.

Jon Moramarco, managing partner of Bonded Winery 166 (BW 166 LLC), is a third-generation wine professional at the company that his grandfather, Giuseppe Moramarco, a tenth-generation wine professional émigré from Italy, acquired BW 166 LLC in Los Angeles from the Jesuits during Prohibition.

Moramarco explained the effects of Brexit on wine imports to the U.S. “The UK pound has dropped in value versus almost every currency,” he began. “The UK will not want to raise their price in British pounds, so it will probably drive them to become interested in any exports to the UK from the U.S. They will want to have a lower price in U.S. dollars, which will be tough for producers to do in the U.S.”

Continuing, “Now those [EU] European wine exporters are going to say, ‘Well, I don’t want to sell at that price to the UK. I’m gonna go try and sell more in the U.S.'” noted Moramarco. “So we will see more imports coming into the U.S. from Europe.”

“So you kind of have a double whammy for wine,” Moramarco concluded, “because they’ve kind of lost the margin in one of their key markets.” He anticipated “difficulty in exports with people wanting to drop price,” as well as a greater “increase in people wanting to import into the U.S.”

California Ag Today2016-08-31T13:10:33-07:00September 1st, 2016|

Tulare County Ag is Down But Strong

Tulare County Annual Crop Report is Down But Still Strong

By Patrick Cavanaugh, Farm News Director

The numbers are in for the 2015 Tulare County Annual Crop and Livestock Report. Marilyn Kinoshita, Agricultural Commissioner/Sealer of Tulare County, reported, “We had an overall value of $6.9 billion, compared to last year, which was more than $8 billion,” which means the County led the nation in total crop value and dairy production, despite a decrease of nearly 14% in one year.

Tulare County’s top ten crops [crop value] in 2015 were:

Milk
Cattle & Calves
Oranges- Navels & Valencias
Grapes
Almonds Meats & Hulls
Tangerines – Fresh
Corn – Grain & Silage
Silage – Small Grain
Pistachio Nuts
Walnuts

Kinoshita explained, “Dairy is our number one industry here. Our milk production was off a little bit. We have fewer dairies in business now because of the low milk prices. Anytime your fresh market milk is off, that’s going to affect our overall value. A good 2/3 of that billion-dollar decrease came from the dairy industry. The price was low the entire year, as opposed to the year before.”

Marilyn Kinoshita, agricultural commissioner, Tulare County

Marilyn Kinoshita, Tulare County Ag Commissioner

Thus far, the reported 2015 county crop reports in the Central Valley are down this year. “Fresno County, for instance, was down 6.5% off its record $7 billion in 2014,” Kinoshita said.

“It has a lot to do with low water deliveries in Fresno and Tulare Counties,” she continued. “The smaller the water deliveries, the more efficient those growers have to be with that water. Anytime you’re pumping water out of the ground, it’s terribly expensive,” she noted.

“Some of our growers have had to decide, ‘All right, I’ve got this much water; I’m going to keep those blocks alive and I’m going to push an older block that isn’t producing as well.’ The returns aren’t as good as some of the newer plantings,” said Kinoshita.

Despite all of that, Kinoshita said agriculture does sit at the head of the table in Tulare County. “Yes, and we need a successful Ag industry to thrive here,” she said.

To view a video of the interview, click HERE.

Tricia Stever Blattler, executive director of the Tulare County Farm Bureau, noted the crop report demonstrates the strength of the agricultural industry. “I think every year when this crop report comes out, it is always a testament to the resiliency of this industry. This industry takes hard knocks, gets knocked down, then steps right back up to the plate and keeps swinging,” Blattler said. “The agricultural sector has a lot of outside challenges that impact the number that we see reported every year.”

Tricia Stever Blattler, executive director , Tulare County Farm Bureau

Blattler acknowledged the crop value numbers do not reflect net revenue for growers. “It’s always really important for our listeners to know that the crop value is a gross revenue number. When our Ag Commissioner steps to the microphone and speaks to our Board of Supervisors about this report each year, she’s reflecting values that are attributed to all of the gross revenue, and it’s not only the field value,” Blattler said.

“That gross number reported each year also represents our packing houses, our milk processing facilities—the creameries, the butter plants—the packing sheds, all those other parts of our industry that [create] value in our industry,” said Blattler.

Blattler noted up or down, it’s all about the resiliency of farmers. “The industry has its years that are really blockbuster and it has its years when it falls back and we see a reduction acreage. We see reductions in surface water deliveries. The drought is still certainly playing a significant role in the numbers we’re seeing,” she explained.

With regard to surface water, Tulare County is in a bit of a unique position. “As an Eastside county, some of our water deliveries are not as subject to the situation that the Westside is in. In the same sense, we have some significant cutbacks that have been attributed to the San Joaquin River’s restoration and the biological opinions in the Delta—all have had an impact on the Central San Joaquin Valley [water] deliveries regardless of whether you’re Eastside or Westside.

“Also, as the exchange contractors either take greater deliveries of water or give up water, that also impacts the amount available to Eastside growers here in Tulare County,” she said.

In summary, 2015 Tulare Crop Report covers more than 120 different commodities, 45 of which have a gross value in excess of $1 million. Although individual commodities may experience difficulties from year to year, Tulare County continues to produce high quality crops that provide food and fiber to more than 90 countries worldwide.

Featured photo: Tulare County 2015 Crop Report

California Ag Today2021-05-12T11:17:12-07:00August 31st, 2016|

Overtime Bill AB 1066 Heads to Governor’s Desk

California Assembly Sends AB 1066 Overtime Bill to Governor

By Patrick Cavanaugh Farm News Director

The California Assembly voted 44 to 32, yesterday, August 29, in favor of a bill that would make California the first in the country to give farmworkers overtime pay after working 8 hours per day or 40 hours per week instead of current law that mandates agriculture workers earn overtime after 10 hours per day or 60 hours per week.

Because farmworkers are unable to work some days due to weather or harvest schedules, they have historically preferred to work as many hours as possible on any given day. Now farmers may be forced to restrict employees from working more than 8 hours per day to avoid the costly overtime payroll, which would severely hurt their financial bottom line.

The bill, which has already cleared the State Senate, now moves on to Governor Jerry Brown, who has until September 31st to sign or veto the bill.

George Radanovich, president of the Fresno-based California Fresh Fruit Association (CFFA) that represents many farmers who rely on hand labor, stated, “It’s a clear example of people who live on black top and cement and who never talk to people in the vineyards or in the fields. They think they are helping the farmworker, and they are not. They’re making it harder for the farmworker and for the farmer,” said Radanovich.

Roger Isom, president of the Western Agricultural Processors Association (WAPA) and the California Cotton Ginners and Growers Association (CCGGA), said AB 1066 just places additional burdens on the farmer. “When you combine this Ag overtime legislation with the minimum wage increase and all of the other labor issues—the workers comp costs that are imposed on growers—it makes us noncompetitive,” Isom said. “On top of that you add the regulatory costs from the different issues like the truck rule; we can’t compete.”

“There isn’t anybody out there who wouldn’t want to pay the workers more than what they’re getting today, or even that overtime,” said Isom. “But consider that California is one of only 5 states that even pays overtime, and none of them pay it after only 10 hours. We already had the most stringent overtime regulations for farmworkers in the country before it was ever adopted. Now, we’ve made it worse; we are going to have the highest minimum wage of any farm state out there, so how do we compete?”

Isom commented, “This last week, U.S. Secretary of Agriculture Tom Vilsack was actually calling Assembly members in the State, urging them to support this bill. We were outraged,” Isom said. “When he was Governor of the State of Iowa, his own state had the lowest Ag wages and has no Ag overtime. The majority of our states, 45 states, have no overtime. You could work 16 hours, 20 hours, and not be paid any overtime.”

Isom noted that supporters of AB 1066 are very shortsighted. He predicts the law will only reduce the number of available working hours available for farm employees and thus decrease their earnings. Isom hopes Governor Brown will see this bill as an added negative impact tied to the recently passed increases to California’s minimum wage.

Agriculture leaders are calling for all concerned to put pressure on Governor Brown to veto AB 1066 by Emailing or phoning constantly.

Governor Jerry Brown
c/o State Capitol, Suite 1173
Sacramento, CA 95814

Phone: (916) 445-2841
Fax: (916) 558-3160

email: governor@governor.ca.gov

(Featured photo: Roger Isom, president of Western Ag Processors Association and the California Cotton Ginners Association)

California Ag Today2016-09-04T20:42:57-07:00August 30th, 2016|

Ryan Metzler Juggles Many Farm Operations

Ryan Metzler Juggles Farm Operations—Large and Small

By Patrick Cavanaugh, Farm News Director

Ryan Metzler grew up as a fourth generation California farmer, as his dad and uncle had a fairly big farming operation producing tree fruit and winegrapes in the Fresno area throughout the 1970s and 1980s. Eventually, Ryan’s dad spun off on his own, enabling Ryan to work with his dad for many years.

Today, Metzler is a graduate of Fresno State, lives in Fresno, and as vice-president of Capital Agricultural Property Services—the property management division of Prudential Ag Investments—he manages many farm operations in the West. “Most of our clients are large investment groups,” said Metzler, “so these clients will typically look at large agricultural properties as an investment.”

As these investment companies typically know little about farming, Metzler explained, “our role is to not only make recommendations about what to plant, but also how to diversify, how many acres, how to process, and who gets to buy the fruit. So we end up growing fruits, nuts and vegetables and just about anything that is consumed,” he said.

“My charge is the western region of the U.S., but we manage farms in the Midwest and the East,” Metzler said. “It does give me opportunities to be involved with a lot of different commodities, but I have to say that growing winegrapes is probably my favorite.”

Managing many properties takes a very strong team. “I work directly with some managers and then we hire a secondary layer of management to do the tractor work and the day to day operations. We have both the economic responsibility, but also the practical farming responsibility to maintain these properties because they do change over time.”

Metzler also farms 200 acres of winegrapes and tree fruit in the Fresno/ Sanger area. “What I find the most interesting, is that I get to be a small grower and deal with small grower issues, and I also get to be a large grower and deal with large grower issues. And I love to marry up those two challenges because it gives me a great perspective on decision making. Sometimes you have to make a strategy choice and other times you have to make a tactical choice, and I find that mix to be really rewarding,” said Metzler.

Metzler summed up farming as “an absolute thrill. I wake up everyday and pinch myself to be lucky enough to do something like this for a living.”

California Ag Today2016-08-26T12:05:07-07:00August 26th, 2016|

Frieda’s Karen Caplan Fears No Fruit

Frieda’s – A Legacy of Introducing Americans to Exotic Fruits & Vegetables

By Laurie Greene, Editor

Karen Caplan, CEO and president, Frieda’s Inc., the 54 year old family business that first introduced kiwi fruit to America in 1962, recounted, “We’ve probably introduced close to 200 exotic fruits and vegetables to American consumers, mostly through supermarkets, but also through restaurants. We continue to introduce new and exotic fruits and vegetables. You’ve got the kiwi fruit; you’ve got sun-dried tomatoes; you’ve got habanero chilies, spaghetti squash, alfalfa sprouts, hothouse cucumbers, shallots, purple sweet potatoes, and purple potatoes.

Caplan knows consumers love to try new products and new foods. “We really credit the TV Food Networks,” she explained. “If you’re watching ‘Chopped’ one night or any of the other food shows and you see these exotic fruits and vegetables like our purple snow peas as a secret ingredient, and you watch a couple of chefs cook with them, you say, ‘Wow that’s really exciting. I never would have picked that up at the grocery store.’ Consumers go to their local grocery store and find those products. It works in a synergistic way, but we continue to have new varieties of fruits and vegetables to introduce.”

Caplan continued, “It is wonderful that American supermarkets seem to realize consumers are passionate about trying these new foods. I think they realize that if they don’t offer the exotic fruits and vegetables, like tropical fruits, different varieties of citrus fruits and some of the peppers, consumers are going to go online and either order them as meals through Blue Apron or purchase the products on Amazon Fresh.”

Fear No Fruit, The Frieda Caplan Documentary

At Frieda’s, we represent about 1,000 different suppliers, mostly farmers. About half of them are in California; the rest are outside of California and around the world. I think the biggest challenges shared by all our farmers, are first of all—water and how to use it efficiently, and then number two—how do we find the labor to pick our products.

When asked how farmers are doing, Caplan replied, “I in awe of farmers. I heard a peach and plum and grape grower speak this morning about his passion. He said, ‘I love this business. I could stop growing this product right now and make more money by putting in nuts, which I could harvest automatically.’”

Caplan continued, “I think what’s so admirable about farmers is they do have a passion for the land and for their products. We’re seeing resurgence in young people wanting to come into the business because everyone has to eat of course; but they love the lifestyle that goes along with it and the work-life balance.

Frieda Rapoport Caplan, Ph.D., founder & chair of the Board, Frieda’s Inc. established Frieda’s Finest/Produce Specialties Inc. in 1962, in the male-dominated Los Angeles Wholesale Produce Market. One of very few women in the produce industry at the time, and the first to own and operate a U.S. produce business, Frieda debuted with a purple sign, which later became the company’s signature color, and her premier product was fresh brown mushrooms – an unusual specialty at that time. She quickly developed a reputation for buying and selling new and unusual produce specialties.

Frieda’s two daughters, Karen Caplan and Jackie Caplan Wiggins, head up the family company and the third generation, Karen’s eldest daughter Alex Jackson, has linked in too.

California Ag Today2016-08-25T12:32:20-07:00August 25th, 2016|

Like Mother, Like Son: Passion for Grape Growing

Mother-Son Team Share Passion for Grape Growing

By Lauren Dutra, Associate Editor

Diane Laub and Jared Allred, Fresno County mother and son grape growers, shared their passion for grape growing and some insight on their raisin and winegrape operations. “We have mostly Thompson Seedless,” Allred began, “which has been made into raisins for the last couple of years. Sometimes we send them to the winery if the price is right. We also have about 75 acres of overhead trellis dried-on-the-vine (DOV) Fiesta grapes that we use for raisins every year.”

With the harvest season behind them, Allred summarized, “in the first week of August, we went through and cut all the canes on the DOV grapes. The raisins started drying on the vine for a few weeks, and then we sent a mechanical harvester through.”

The mother and son team also farm 85 acres of French Colombard. “We used to have 40 acres of Syrah,” Allred added, “but we took [the variety] out this last year because the price hasn’t been good and the vineyard was not in very good shape.”

“In years past, we used to send all of our Thompson’s Seedless to the wineries,” Allred explained, “but the price hasn’t been good the past three years, so we’ve been making it into raisins. This year, the only thing we have going to the winery is our French Colombard.”

Allred also commented, “The crop this year looks pretty good, actually as good—if not better than—last year. ‘Not a lot of powdery mildew except on the Fiestas, which are always prone to a little bit of mildew.”

Diane Laub, Allred’s mother, explained her role on the family’s farm. “I mainly oversee everything on the farm and also do all the office work. That is what I was brought up doing. I still do all my own work: irrigate, parts runner—you name it.”

Laub is the daughter of the late Don Laub, a well-known and respected leader in agriculture and in the Easton community where he farmed. For 50 years, Don Laub was active with the Fresno County Farm Bureau and served as president from 1986-1988. In 1996, he received the Distinguished Service Award from the Sacramento-based California Farm Bureau Federation. He also served on boards of many other agriculture organizations, including Ag One Foundation at Fresno State and California Association of Winegrape Growers.

Following in her father’s footsteps, Diane Laub explained her passion for the business, “It’s just something that I love to do. I don’t know what I’d do without it. You know, it’s my job; it’s my life,” she said.

California Ag Today2021-05-12T11:00:50-07:00August 23rd, 2016|

CULTIVATING COMMON GROUND: Economic Analysis of Drought on California Agriculture

Editor’s note: We thank Aubrey Bettencourt for her contribution to California Ag Today’s CULTIVATING COMMON GROUND commenting on the report, “Economic Analysis of the 2016 Drought for California Agriculture,” released this week. Lead UC Davis author Josué Medellín-Azuara’s response can be read below.

By Aubrey Bettencourt, executive director, California Water Alliance (CalWA)

Josué Medellín-Azuara, Duncan MacEwan, Richard E. Howitt, Daniel A. Sumner and Jay R. Lund of the UC Davis Center for Watershed Sciences, ERA Economics and the UC Agricultural Issues Center reported their views on the economic impact of California’s continuing drought on agriculture this week. The study, “Economic Analysis of the 2016 Drought For California Agriculture,” proved to be uncommonly riddled with errors, questionable metrics and inaccuracies; it’s a continuation of a disturbing recent trend.

The authors claim that about 78,800 acres of land might be idled due to the drought, but a quick Google search shows a single water district that had more than 200,000 acres of fallowed land in 2016. There are more than a hundred other water districts throughout the state, and most are reporting idled acreage.

In another irrigation district in Yuba County, more than 100 agricultural users have been cut off entirely, leaving their nearly-mature crops and fruit and nut trees without water. [North Yuba Water District (NYWD)]

This year the federal and state water projects announced they would provide agriculture with 55% of their water. Two months ago, they reduced the estimate to 5% south of the Delta, and they are struggling to even deliver that amount.

Across the state, water prices have increased dramatically, whether pumped from the ground or bought on the faltering water-exchange market. Water that costs less than $250 per acre foot in 2012 now costs up to $750 or more.

It doesn’t take a doctoral or economic degree to understand that when the price of water goes up, the cost to produce food also goes up. Farmers may be getting more money for the produce they grow, but they are watching their bottom line shrink because it costs more to grow it. Even water from their wells isn’t free; pumping takes energy, and energy costs money too.

Adding to rapidly increasing costs are the new minimum wage, capped work hours, and hundreds of regulatory mandates from the 80+ local, state, and federal agencies that oversee every aspect of California farming and bury farmers in paperwork and red tape. Compliance takes time away from growing food, and it costs money.

Take a look at rice farmers. Growing rice today is a losing proposition. After the labor, cost of rice plants, fuel, fertilizing, care, harvesting, drying and milling, growers pay substantially more to grow rice than they can charge for their crop. Many have converted rice paddies to other uses, and some sell their water or take money from federal agencies and conservation groups to create wildlife habitat in order to simply stay afloat. Some are selling off their land to developers, a lose-lose decision affecting everyone.

On main street, consumers are another group taking a second, alarmed look at their grocery, water and sewage bills. All are rising far faster than inflation. Whether you are talking about the price of fruit, bread and eggs or the cost of taking a shower, all have been increasing over the past five years because of the drought.

To really understand what’s happening, take a drive out of the city and into the countryside where your food is grown. Stop at a roadside produce stand or park your car and strike up a conversation with some ranchers and farmers in a small town cafe.

After you hear their stories, you may realize that almonds and pistachios are not as labor intensive as strawberries, tomatoes, cucumbers, grapes, beef, lamb or many others out of the nearly 450 crops grown in California. Some crops are thirstier than others, too. This doesn’t diminish the value of these fruits, nuts, vegetables, and proteins. The value of water is what it provides us: in this case, safe, local, and hopefully affordable food.

But commonsense interviews and case studies of actual operations — once the heart of any competent agricultural economic study — are virtually missing from the report’s statistical models built on university computers, research hypotheses and tables of statistics.

The drought has hurt California farmers, and it is hurting Californians wherever they live. Gross income may be up, but net profits are down, and the rate of decline hasn’t hit bottom yet.

Aubrey Bettencourt is the executive director of the California Water Alliance (CalWA), a leading educational voice and authority on California water. CalWA advocates for the water needs of California families, cities, businesses, farmers and the environment.

Editor’s note: California Ag today thanks Josué Medellín-Azuara, senior researcher, UC Davis Center for Watershed Sciences, and lead author of “Economic Analysis of the 2016 Drought For California Agriculture,” published this week, for his response to several claims made by Aubrey Bettencourt (above).

Josué Medellín-Azuara told California Ag Today, “I will not go over debating the comments which I very much welcome and respect, but I would like to provide some thoughts instead.”

1) “Through remote sensing,” Medellín-Azuara said, “we estimated summer idle land in Westlands by the end of the irrigation season to have been 170K acres in 2011 and just above 270K acres in 2014,” based on NASA data. The difference can be explained by some drought effects and other conditions, according to Medellín-Azuara, “so idled land differences should be taken with a grain of salt. As a point of interest, most of the fallow land we estimated was on the Westside of the south San Joaquin Valley.”

2) In addition, Medellín-Azuara clarified, “My understanding is that there is a cost issue and a cutoff issue. We estimated about 150 TAF (Thousand Acre-Feet) of [water] shortage in the Sacramento Valley in our study. At current conditions for North Yuba Water District (NYWD) agriculture is no more than 3 TAF from my reading of the attached document. I am not saying the cutoffs are not hard for the more than a hundred users, but [I] also want to put numbers into perspective.”

3) “From what I’ve heard and read,” Medellín-Azuara stated, “the timing [of] more than quantity of the projected releases is unfortunate. One of the things we highly encourage in this and past reports is easing of low environmental impact water transfers among users.”

California Ag Today2021-05-12T11:05:48-07:00August 22nd, 2016|

UC Davis Foundation Plant Services Serves the Ag Industry

UC Davis Foundation Plant Services, Critical Service to the Ag Industry

By Brian German, Associate Editor

UC Davis is home to Foundation Plant Services (FPS), a plant repository the world relies on for plant importation and quarantine, disease testing, virus elimination, and DNA identification services for a variety of plants and rootstocks. FPS also coordinates the release of UC-patented horticultural varieties and provides an essential link between researchers, nurseries and producers.

“Established at UC Davis in 1958, FPS has grown from a small kind-of-mom-and-pop scientific effort sourcing out cherry and grapevine cuttings that have been screened for virus to nurseries so that they could make better plants for growers,” said Deborah Golino, director of FPS since 1994. “FPS has grown to the point where it is a self-supporting center. We owe a lot to the growers and nursery industry that have supported us over these years,” she said.

Today FPS employs about 35 people on “soft money,” including scientists in the lab and people in the green houses, as well as propagators, and field workers. About 250 acres of various plantings—largely grapes of course—plus programs with strawberries and sweet potatoes that are mostly run in green houses,” noted Golino.

“All other programs circle around getting correctly identified, valuable commercial plant materials (cultivars). Many times, great people save varieties, and screening them for virus and making sure that commercial nurseries have that virus screened materials, so they can make plants for farmers that have the added productivity and sustainability that comes with clean material,” explained Golino.

FPS advances clean material in the lab by cutting out a meristem shoot tip and grow a plant from that. “Let’s say we have a valuable Chardonnay that came in from France. It’s a new clone and it has a couple of viruses in it. In a process that takes about a year, we take a micro-shoot tip culture and regenerate a plant,” Golino said. “For reasons that aren’t really fully understood, regenerating that plant from the tiny .5 millimeter piece gets rid of viruses. That’s our therapy, but what we give to most nurseries and growers who buy material from us is that little plant grown up in the field, and we might have hundreds or even thousand of cuttings of some root stocks.”

“The most common route for advancing a clean plant cultivar is by nurseries coming in to buy several hundred cuttings,” Golino explained, “and plant them in a field. Those plantings grow big mother plants from which they harvest more cuttings to be grown and eventually sold to growers. It’s a multi-year generational process.”

“We have over 900 cultivars of grapes and over 5,000 accessions because we have multiple clones of Chardonnay and Pinot Noir,” Golino said. “All of that material is improved by the technology we have used, technology that has been developed by other UC researchers to conduct DNA identification to ensure accuracy, which is part of the FPS mission.”

“That material is held as a trust to improve our agricultural offerings to growers of fruit trees and other crops,” Golino said. “Even though much of the material is not produced by UC growers and might even be produced by a Cornell or a Michigan breeder, it is still important to our agriculture here in California and across the country since the 2008 Farm Bill was passed. I think we owe Congressman Sam Farr (CA -20) a tribute for that. Since then, there has been money for the National Clean Plant Network with USDA’s Animal and Plant Inspection Service (APHIS) and they have funded about 20 clean plant centers around the country.”

“FPS certainly provides the highest level of screening in the world,” Golino stated, “and I think we might be the biggest too. In this modern world where margins are so thin, the universities are so tight for money for research and especially for teaching, and they have so many challenges taking care of those things, the experiment station does not have much money for service work, like the work that is done at FPS.”

“FPS conducts its work for industry, and that isn’t really directly relative to the university’s mission which has to be strictly accommodated. That is why California grape and fruit tree nurseries have assessed themselves to fund our programs since the mid 1980s,” said Golino. “And then we have the clean plant money on top of that, and our grape nurseries actually pay user fees on the plant material they make from our material. That keeps the doors open and keeps us doing world class work,” Golino said.

California Ag Today2021-05-12T11:05:49-07:00August 18th, 2016|

Jamming Leafhopper Signals

Jamming Leafhopper Signals to Reduce Insect Populations that Vector Plant Disease

By Patrick Cavanaugh, Farm News Director

An innovative team of researchers at the San Joaquin Valley Agricultural Sciences Center, USDA Agricultural Research Services (ARS) in Parlier Calif., are trying to confuse leafhopper communication in hopes of reducing certain devastating plant diseases. Of particular interest is the glassy-winged sharpshooter, a large leafhopper that can vector or spread the bacteria Xylella fastidiosa from one plant to another which causes devastating plant diseases such as Pierce’s disease in grapes and almond leaf scorch.

Dr. Rodrigo Krugner, a research entomologist on the USDA-ARS Parlier team since 2007, explained, “We started on this glassy-winged sharpshooter communication project about two years ago. These insects use substrate-borne vibrations, or sounds, to talk to, identify and locate each other; actually do courtship; and then mate,” Krugner said.

Click here to hear LEAFHOPPER SOUNDS!

Glassywinged Sharp Shooter

“This area of research started probably 40, or 50 years ago with development of a commercially-available laser doppler vibrometer (LDV), a scientific instrument used to make non-contact vibration measurements of a surface,” Krugner said. “Commonly used in the automotive and aerospace engineering industries, the LDV enabled an entomologist to listen to and amplify leafhoppers communicating,” Krugner said. “We’ve been doing recordings in the laboratory, learning about their communication with the idea of breaking, or disrupting, that communication. Once we disrupt that, we can disrupt mating and thereby reduce their numbers in vineyards and among other crops.”

Krugner noted the research team is evaluating two different approaches: one is to discover signals that disrupt their communication, and the other is lure them away from crops or towards a trap. “We may be looking at female calls, for example. An analogous system would be the pheromones, or long-range attraction volatile chemicals released by female lepidoptera, to attract males.” However, since leafhoppers use only sound, Krugner said, “We’re trying to come up with signals to disrupt their mating communication. We’re also looking at signals to jam their frequency range, 4000-6000 Hz, so they cannot hear each other,” Kruger said. “We’re also looking at signals that can be used to aggregate them, or lure them, into one section of a crop, or maybe repel them from the crop. These are all different approaches that we’re investigating right now.”

Krugner explained, “Researchers are attempting to perfect the disruptive sounds in order to do the things we need—to actually implement a management strategy for disrupting not only glassy-winged sharpshooter, but anything in a vineyard that actually communicates using vibrational communication. We know what they are saying to each other, which is very important. In the laboratory, the signals that we have look promising in disrupting the communication of these insects, so we’re taking them into the field.

Current mating disruption trials are underway in Fresno State vineyards. “We’re going to finish that research, hopefully, next year,” said Krugner, adding, “usually, fieldwork takes two to three years to show something.”

(Featured photo: Rodrigo Krugner, research entomologist, USDA-ARS, Parlier)

California Ag Today2021-05-12T11:05:49-07:00August 15th, 2016|

Winegrape Cultural Practices Go Mechanical

Winegrape Cultural Practices Must Go Mechanical for Sustainability

By Emily McKay Johnson, Associate Editor

Higher wages handed down by the California Legislature are driving California winegrape growers to mechanize many farming operations. Doug Beck, geographic information systems (GIS) specialist and agronomist for Monterey Pacific Incorporated who works with winegrowers in the Salinas Valley, commented, “We don’t have the people; that’s the main problem. We can put bodies out in the field, but we can’t get the work done the way it needs to be done, at the time it needs to be done,” he said.

Mechanical Box Pruning on Winegrapes

So the industry has no choice but to go mechanical on pruning, leafing as well as harvesting. Beck explained pruning has been tough to mechanize. “We’re basically just trying to do a system that is pruned by a tractor, creating a box head that self-regulates—it sets the amount of crop it needs and grows the size canopy it needs in order to balance that vine, produce good quality grapes and produce enough to be economically viable,” noted Beck.

Economic viability—profit—is critical, according to Beck. “In fact, it is true sustainability. Otherwise we’re not in business,” he said.

Mechanical pruning essentially creates a hedge every year. Beck explained, “Typically we have pruning spurs that have two buds or three buds, a hand space apart, coming off that cordon that we cut by hand. Instead of just having spurs, we let that grow into a box, and the mechanical pruner cuts along the sides and then across the top of the vine in one pass,” Beck explained. “It looks basically like a long box,” he said.

Beck has discovered that mechanical pruning into a box shape on the trellis wires, “works across all varieties we’ve tried. We’re definitely in a cool area for grape production,” Beck said, “so those are the kind of grapes that we’re growing: Pinot Noir, Grenache, Chardonnay, and Pinot Gris, along with some Cabernet.”

Beck said that winegrape vineyards have a lot of vigor in the Salinas Valley. “You also have big crops, which may also require some shoot or crop thinning. You have to come up with other machines to do the rest of the operations that they usually do by hand.”

“The mechanical process appears to be working well because growers are seeing a bump in yield of 30 to 50 percent,” Beck commented, “and they are saving about $1,000 per acre. Economically, it makes a lot of sense.”

“Quality is definitely acceptable. It’s as good as any other trellis system we have out there. Quality comes from vine balance and fruit exposure to light, and that box prune system accomplishes both,” said Beck.

California Ag Today2021-05-12T11:05:49-07:00August 11th, 2016|