Weedy Rice Challenges Some Rice Growers

Weedy Rice Crops Ups Again in Northern Calif. Rice Fields

 

By Patrick Cavanaugh, Farm News Director

 

In Northern California, rice growers typically prepare to start harvesting in mid-September, but some growers have endured a lot of weed pressure from weedy rice (Oryza), also known as red rice, according to Whitney Brim-DeForest, a UC Cooperative Extension Rice Farm Advisor in Sutter, Yuba, Placer, and Sacramento Counties who focuses particularly on weeds. Red rice is actually the same species as cultivated rice, but it produces far fewer grains per plant and is therefore considered a pest.

 

Brim-DeForest said weedy rice is common in the Southeast, but not in California. “We’ve been pretty lucky in California in that we actually don’t have a big problem with it,” she said. “It’s a big problem down in the southern U.S. and they have been dealing with it in for a long time; but we have had it crop up. I think the last time was in 2006, and we managed to deal with it. It somehow popped up again in the last couple of years, so we’re dealing with it again.”

 

How weedy rice reached California is apparently a mystery. “We don’t really know the source of it, to be honest,” said Brim-DeForest. “We’re investigating that through research, hopefully starting this fall,” she said.

 

Brim-DeForest said growers have few choices to control weedy rice. “Growers that have it will either have to rogue¹ it out, pull it out by hand or sacrifice that field and spray it with Roundup,” she said, “which would kill the rice as well. And, if the rice grower doesn’t know he has weedy rice in the field, it could hurt him later at the rice mill,” explained Brim-DeForest.

 

“Once harvested, the rice goes to the mill. If a certain amount of red rice bran (the outer layer surrounding the rice grain) is discovered, the mill will not accept it and could reject the entire load,” she said.


¹rogue (verb) to remove inferior or unwanted plants

2021-05-12T11:05:48-07:00September 2nd, 2016|

Duarte Nursery v. U.S. Army Corps of Engineers Update

PLF Attorney Reports Duarte Appeals Court Decision—Once Again

By Patrick Cavanaugh, Farm News Director

 

Damien Schiff, principal attorney at Pacific Legal Foundation (PLF) who has been representing the Duarte family in their legal battle with the U. S. Army Corps of Engineers (Corps), provided this update after Judge Kimberly J. Mueller, U.S. District Court for the Eastern District of California dismissed their summary judgment motions on June 10, 2016, and ruled the Corps’ February 23, 2013 cease and desist order did not deprive Duarte of liberty or property. Schiff said his client’s next course of action is filing for an appeal of the judgment.

“It’s disappointing, in particular, because earlier in the case, we had received a very favorable decision from U.S. District Judge Lawrence K. Karlton, the original Federal Judge assigned to our case who ruled in our favor on our due process challenge to the Army Corps’ cease and desist order.” Judge Karlton retired from the bench in 2014 and passed away in 2015. “It was particularly disappointing to see Judge Mueller reverse Judge Karlton’s decision.”

“Launching the appeals process will take some time,” Schiff explained. “Unfortunately, the case is complicated because there are a lot of claims going on and not all of them have been resolved by Judge Mueller’s decisions. The general rule in Federal Court is that you cannot appeal until a final decision has been made that decides all the claims against all the parties.”

Damien M. Schiff

Damien M. Schiff, Principal Attorney, Pacific Legal Foundation’s National Litigation Center

Considering the preponderance of hills and valleys across the United States, the magnitude of this case has growers—not just from California, but nationwide—concerned about the outcome and precedents resulting from this case, as well as the significance of future Army Corps-issued cease and assist orders.  “It is an amazing assertion of power by the United States Environmental Protection Agency (EPA) and the Corps,” Schiff said, “and I think that’s why we see not just farming groups and property rights groups, but also a majority of the states, challenging the Agency’s Waters of the U.S. (WOTUS) Rule.”

EPA Fact Sheet Clean Water Rule_Page_1A significant point of contention in the case, Schiff explained, stems from Judge Mueller’s ruling that because the Duarte property had not seen any farming activity since 1998, the Clean Water Act’s farming exemption was no longer applicable. “That’s, in part, why we challenged the cease and assist orders,” said Schiff, “because the Corps issued this directive without giving any prior notice, much less any opportunity to present contrary information. The reality is, this property, and the other properties in the entire area, have traditionally been used for agriculture, and are, in fact, zoned for agricultural use.” EPA Fact Sheet Clean Water Rule_Page_2

The Duarte case is so multifaceted,” Schiff said. “The land was always agricultural, and what was done on the property is consistent with normal agricultural farming practices; there is really nothing exceptional about what went on. What’s particularly problematic for the Corps here is that Duarte went above and beyond the call of duty by having a wetlands consultant ensure that all of the areas assessed to have vernal pool or wetlands characteristics were marked and avoided entirely.”

Whatever the outcome, the Duarte case will have far reaching effects on legal precedent throughout the agricultural community as well as on the cease and assist orders issued by the Army Corps to families throughout the country. “Surprisingly, there isn’t very much case law on what process, if any, is owed to the landowner before the agency issues these orders,” Schiff remarked. “However the Duarte case ends up, I think that will have to be litigated in other parts of the country.”

2021-05-12T11:05:50-07:00August 2nd, 2016|

Jasieniuk on Weed Evolution

Tracking Herbicide Resistance in Weed Evolution  

By Emily McKay Johnson, Associate Editor

 

Marie Jasieniuk, professor and weed scientist at UC Davis College of Agricultural and Environmental Sciences, discussed her groundbreaking research, “I work on the population genetics and evolution of agricultural weeds and invasive plants,” she said. “We use molecular tools to look at the origins and spread of weeds. We also use molecular tools and genetic studies to understand the evolution of herbicide resistance in weeds,” Jasieniuk added, “to be able to propose management approaches that reduce the likelihood of further evolution and spread of resistant weeds.”

UC Davis Annual Weed Day 2016

UC Davis Annual Weed Day 2016

Jasieniuk and her team identify the origins of invasive plants, and determine how they were introduced. “We study how they were introduced, how they have spread and whether they have been introduced multiple times. Again, if we understand how they’re spreading, we can do something to try to stop the spread,” she said.

Italian rye grass, a weed Jasieniuk is currently studying, is problematic because it is resistant to Roundup, a popularly used weed and grass killer by growers. “UC ANR Cooperative Extension specialist, now emeritus, Tom Lanini, and I sampled over 100 locations of Italian rye grass and tested them for resistance to Roundup ten years ago,” she said about the project, funded by USDA. “Last year, we re-sampled all of those sites, and we’re re-testing to see if there’s been an increase or a decrease or no change in resistance to glyphosate, to Roundup,” she said.

Roundup isn’t the only weed and grass killer available on the market. “We’re looking at resistance to three other herbicides,” she said. Working with growers to determine the most efficacious weed treatments that also reduce the likelihood of wood resistance to herbicides,” Jasieniuk explained, “We interview growers about their herbicide use, non-chemical approaches, and integrated management techniques to identify management practices that correlate highly with low or no resistance,” she explained.

Resistance management is found to be more effective with a rotation of various herbicides. “What you want to do is rotate different types of herbicides with different modes of action,” Jasieniuk said. “Perhaps do tank mixes and incorporate non-chemical approaches as well,” she added.

Eliminating weeds can be as simple as disking and digging them out with a shovel when there are only a few. “I think, in many cases, this would have done a lot to prevent new weeds from coming in and certainly resistant weeds from spreading,” she noted.

2021-05-12T11:05:53-07:00July 11th, 2016|

Sparked Cultural Interest in Gardening and Locally Grown Produce

Locally Grown Food Inspires Consumers to Learn More, Garden at Home 

By Laurie Greene, Editor

Cultural changes in eating habits are sparking an added interest in locally grown produce. Scott Steinmaus, professor in the Biological Sciences Department at California Polytechnic State University, San Luis Obispo (Cal Poly SLO), outlined the surge in local produce purchasing and how it is igniting consumer interest in growing their own gardens.

“The food craze is a real big movement right now,” Steinmaus stated, “especially with urban folks. Some of the biggest scenes are the foodie craze—that farm-to-table idea of buying locally, organically-produced food.”

Scott Steinmaus, professor of Biological Sciences Department at Cal Poly San Luis Obispo.

Scott Steinmaus, professor of Biological Sciences Department at Cal Poly San Luis Obispo.

Continuing, “And the cooking shows are out of control-popular, right? Where does the food come from? It comes from here; this is what it’s all about,” he said, with pride.

The growing trends are also reinvigorating students to become more involved, according to Steinmaus. “Students are asking where their food comes from,” he commented, “and who the farmers are that produce such healthy fruits and vegetables. That is an exciting part of our discipline as well—this foodie craze, and I think our students want to become a part of that,” he reflected.

The push for local produce is also inspring more people to grow their own home gardens. “When they garden, they get it,” Steinmaus explained. “And as soon as people get their hands dirty and as soon as they produce their first tomato; there’s nothing more empowering than producing your own food,” he said, “even if it’s a little bit.”

With this renewed interest in home gardening, Steinmaus observed, many are discovering their preconceived notions of farming were not quite accurate. “We’re working with the American Horticultural Society, putting together the videos that show people farming isn’t what you might think it is; it is actually completely different.” Steinmaus said.

“Farming involves a lot more than a green thumb,” he elaborated. “It requires the understanding of growing cycles and identifying various deficiencies. It utilizes very high technology. It is producing food; there is nothing more empowering than putting food on your kitchen table that you grew in your garden, or was grown by a farmer you know just down the street, and you know his [or her] name,” said Steinmaus.

2016-07-06T17:44:22-07:00July 6th, 2016|

CA Agriculture Leadership Transitions

CA Agricultural Leadership Transitions: Barry Bedwell to Head CALF, George Radanovich to Lead CFFA

By Patrick Cavanaugh, Farm News Director

There is a change in leadership at the Fresno-based California Fresh Fruit Association (CFFA), where Barry Bedwell has served as president for 13 years. The new president, as of August 1st, is former eight-term member of Congress for Mariposa County, George Radanovich, “and a five-year retiree in Mariposa, too,” said Radanovich.

“Don’t forget to add that,” he insisted. “Yes, the opportunity came up. My son King graduated from high school, and now he’s off to college at Ole Miss. This gives me the time to get back and start working on water and labor issues that I love—and being involved with the ag industry. The timing is perfect, and it’s a real exciting adventure for me.”

George Radanovich

George Radanovich will head California Fresh Fruit Associaition

Radanovich served in Congress from 1995 to 2011, representing a big chunk of the Central Valley in California’s 19th District in the U.S. House of Representatives. While there, he served on the Committee on Energy and Commerce and its subcommittees: Communications, Technology and the Internet, Commerce, Trade and Consumer Protection (Ranking Member) and Oversight and Investigations. Radanovich also served as co-chair of the Water Caucus, Congressional Wine Caucus and Congressional Croatian Caucus, as well as being considered an agricultural expert in areas related to water supply and immigration reform.

Barry Bedwell will now assume presidency of the California Agricultural Leadership Foundation (CALF), a non-profit corporation committed to leadership training and transformational learning experiences in partnership with California Polytechnic State University (Cal Poly) in San Luis Obispo and Pomona; California State University, Fresno; and the University of California, Davis.

“I am excited about it,” Bedwell said. “I think it’s a great opportunity for myself and a chance to really take what I’ve learned over four plus decades in California agriculture and put it to good and practical use.”

Bedwell will be replacing Bob Gray at the Agricultural Leadership Foundation. “Bob Gray has done an absolutely fantastic job in really focusing the program more on leadership development,” noted Bedwell. “It is really doing personal coaching and working on leadership tendencies. When I was there thirty-four years ago in Class 13, the foundation tried to expose people in agriculture to things outside of the realm of agriculture; but now, they’ve taken it even a step further to say, ‘Here’s how to make you a better leader. Here is how to really strengthen your areas so that in the end, everyone coming out of this program will be a better person and representative for California agriculture.'”

Barry Bedwell

Barry Bedwell Will lead the CA Ag Leadership Foundation

“The program has changed from 24 months down to 17 months, but it’s still a very valuable proposition,” noted Bedwell. “I think the estimated monetary value of what this means to the individuals involved is something like $50,000,” he said.

Bedwell brings to CALF a depth of experience in agriculture. “How do you develop the Leadership Program for maximum benefit?” asked Bedwell. “That’s where I think I can particularly help, knowing the issues that face California agriculture and what we have to deal with primarily in Sacramento. I think that will be a big help.”

Bedwell also emphasized the importance of keeping CALF alumni engaged. “With over 1300 graduates, this program is a powerful force out there,” he said. “We want to continue to build on what we have, and engagement with those alumni is critical, moving forward,” said Bedwell.

And perhaps certain alumni could be the new messengers to Sacramento. “What’s clear right now is we don’t necessarily have the right messengers. This Ag Overtime bill [AB-2757 Agricultural workers: wages, hours, and working conditions], which was reintroduced after failing in the Assembly a few weeks ago, has convinced me that although we went in and explained the negative impact it would have on employees, quite frankly, certain members did not believe us,” said Bedwell.

“We have to change the messenger, or the message gets lost sometimes,” Bedwell commented. “So that’s part of what we have to think about in looking at the future. We say the right things, but they are not getting through, so now we have to figure out how we get through,” Bedwell said.

2016-07-04T16:58:42-07:00July 1st, 2016|

Timorex Gold, Broad-spectrum Biofungicide

Biofungicide Timorex Gold to Help Western Vegetable Growers Fight Disease Pressure

By Patrick Cavanaugh, Farm News Director

The U.S. EPA has approved Timorex Gold, a new broad-spectrum reduced-risk biopesticide that is already a leading biofungicide in Latin America to control black sigatoka, a leaf-spot fungal disease on bananas, for various domestic crops such as tomatoes, strawberries, as well as other berries, cucurbits, grapes, tree nuts, and lettuce.

Stockton photo Strawberries & Blueberries beautiful!Timorex Gold is well positioned for American crops because it is known to be effective on powdery mildew and Botrytis on strawberries and tomatoes, plus bacterial blight on tomatoes.

Sarah Reiter, country manager of STK Stockton, an innovative Israeli company that opened its U.S. headquarters in Davis, CA. “We are very excited about the products performance we are seeing in areas where it is registered,” said Reiter. “We are happy with the label the EPA granted us. We still await registration in California and anticipate it next year or possibly late this season.”

Reiter noted the highly effective active ingredient in Timorex Gold, the plant extract Meluleuca alternifolia, or tea tree oil, gives growers a powerful new tool to control both bacteria and fungi diseases. “We know growers do not have a lot of choices for bacterial control,” said Reiter, “so any new active ingredient is a good thing. This product has the added bonus of being a fungicide too.”

“Timorex Gold has been established as a primary control product for sigatoka because it performs so well,” Reiter commented. “Growers use it because of its profile, and it’s easy to use. And while the product is a biopesticide, once the growers get it in their hands, they tend to forget it’s a biopesticide because it performs as if it is a synthetic material.”

timorexgold STK Stockton Group“As an industry we have been looking for this for quite a long time,” Reiter reflected. “While biologics have been around for a century, historically, growers would have to give up some levels of control in order to implement them into a conventional program. We do not see that loss when using Timorex Gold against sigatoka disease.”

“Our expectation in the U.S. is that growers will see that same high level of performance when they use the product here,” Reiter said. “And since Timorex Gold is a biological, there is no concern for Maximum Residue Level (MRL) data because there is no residue on the crop. The product will have very short re-entry intervals (REIs) and preharvest intervals (PHIs), as well as flexible application intervals, a strength that growers like because it gives them a lot of flexibility to implement the product into their program when they need to instead of having to manage REIs and PHIs.”

In addition, Timorex Gold has a very low designation of FRAC 7¹, which means the product has a unique mode of action that can be used in alternate succession with other fungicide modes of action to prevent the development of resistance.

Concurrently, STK Stockton continues to invest heavily in its new technology pipeline with the intention of bringing more innovative biopesticides into different markets. As part of these efforts, the company has recently announced the appointment of Shay Shaanan as the new vice president R&D, leading the company’s activities. The former global development manager of the fungicides division at ADAMA (formerly Makhteshim Agan), Shaanan has over 15 years of experience in research and commercialization of crop protection products.

“Having Shay join our team marks another significant milestone in our growth strategy. It reflects our commitment to advance our technologies and provide the agriculture industry with new solutions for sustainable agriculture.” explained Guy Elitzur, CEO of STK Stockton. “Shay will lead our R&D and will be of enormous value in moving our company forward. Additionally, we will be looking for in-licensing partners, including bio companies in the U.S. to broaden our product offerings.” said Elitzur.

The products of Stockton will be sold under the Syngenta brand for Botrytis and Powdery Mildew in ornamentals globally. The biofungicide technology complements the comprehensive fungicide portfolio of Syngenta and will help to provide its customers with innovative sustainable tools for disease resistance management.

“We are very excited about this agreement,” Elitzur commented, “as Syngenta is the perfect partner for our new products in ornamentals.”

________________________________

¹FRAC is a Specialist Technical Group of CropLife International (CLI) that provides fungicide resistance management guidelines to prolong the effectiveness of “at risk” fungicides and to limit crop losses should resistance occur.

The main aims of FRAC are to:

  1. Identify existing and potential resistance problems.
  2. Identify existing and potential resistance problems.
  3. Collate information and distribute it to those involved with
    fungicide research, distribution, registration and use.
  4. Provide guidelines and advice on the use of fungicides to reduce the risk of resistance developing, and to manage it should it occur
  5. Recommend procedures for use in fungicide resistance studies.
  6. Stimulate open liaison and collaboration with universities, government agencies, advisors, extension workers, distributors and farmers.
2021-05-12T11:05:54-07:00June 28th, 2016|

Steve Koike on Resistant Cultivars

The Search for Resistant Cultivars

By Emily McKay Johnson, Associate Editor

In the second part of our series with Steve Koike, plant pathology farm advisor for UC Division of Agriculture and Natural Resources, Cooperative Extension in Monterey County, the focus is on the critically needed research on resistant cultivars. Koike, who has focused his research since 1989 primarily on the understanding of disease systems and the investigation of new methods of disease control, said, “The role or the need for resistant cultivars is tremendous.”

“Some good case studies of resistant cultivar research address soil-born problems on lettuce,” Koike explained. “For example, Fusarium wilt and Verticillium wilt on lettuce could be managed lightly; but in order to overcome those diseases, resistant lettuce varieties need to be in place.”

Steve Koike, UC Cooperative Extension, Monterey County.

Steve Koike, UC Cooperative Extension, Monterey County.

“First discovered in 1995 on the Central Coast,” said Koike, “Verticillium wilt has the potential to infect and damage numerous different crops. And although Fusarium wilt was typically unseen in the San Joaquin Valley, it has recently begun to appear on the Central Coast.”

Continued improvement of management techniques upon discovering initial disease symptoms is necessary, according to Koike. “Symptoms of the disease usually appear on the lower leaves of plants, around the edges, and the areas between the veins can turn a yellowish-brown.”

“Strawberries currently have three really important disease pressures state-wide: Verticillium wilt, Macrophomina (charcoal rot) and Fusarium wilt,” Koike commented. “Even the fumigation tools we have are not cleaning them up 100 percent, so we have problems.”

“We will continue to have problems,” Koike elaborated, “until there are truly resistant strawberry varieties to those pathogens. Plant breeders understand that IPM management of these diseases is so dependent on developing resistant varieties,” he said, “but we’re not there yet. We do not yet have truly resistant lettuce or strawberry varieties out in the field,” Koike said.

_______________________________

Koike and his fellow researchers discovered a new race of the downey mildew pathogen in spinach that has been designated race 16. While there are some varieties that are supposedly resistant to race 16, Koike noted that there is still more research to be done.

To read the first part of our series on Downey Mildew, click here.

 

2021-05-12T11:05:54-07:00June 27th, 2016|

Postharvest Short Course Focused on Taste and Quality

UC Davis Postharvest Course Covers Food Loss, Produce Handling

By Lauren Dutra, Associate Editor

The 38th annual Postharvest Technology of Horticultural Crops Short Course concluded TODAY, June 24 at UC Davis. Presented by Beth Mitcham, director of the Postharvest Technology Center, the course focused on postharvest produce quality and safety.

Beth Mitcham, Director of the Postharvest Technology Center at UC Davis.

Beth Mitcham, Director of the Postharvest Technology Center at UC Davis.

“This class provided a really broad overview of all the topics that are relevant for postharvest handling of produce, including fruits, vegetables, nuts, and also ornamentals,” said Mitcham. “We cover the crops that are grown in California, but because our audience includes a lot of people from around the world who want to learn the basics about postharvest handling, we also cover a few crops that aren’t grown in California for commercial purposes. Furthermore,”she noted, “we also address some of the latest technologies that are available for maintaining excellent quality,”

Maintaining a good cold chain throughout the entire shipping line is critical, according to Mitcham. “We talk a lot about temperature,” she elaborated. “In fact, we tell students the three most important things about postharvest biology and technology are: temperature, temperature and temperature. We discussed many other technologies during the week, but they are secondary to good temperature management,” she noted.

Mitcham also mentioned food waste and how to control it. “So much effort goes into growing the crop, which includes harvesting at the prime of ripeness and getting it in the pre-cooler, on the trucks and to the market. But, people buy it, put it in their refrigerator and then don’t eat it. It goes bad and they waste it. It does happen,” said Mitcham. “Our goal is to try to make the product as hearty as possible while retaining really good flavor so it can last in your refrigerator as long as possible but also so people want to eat it, so hopefully it doesn’t sit in there and degrade.”
UCD Postharvest Technology Center

In reducing postharvest losses, Mitcham commented on the dissonance between addressing postharvest flavor and consumer satisfaction, “In some ways they are two opposite ends of the spectrum; some of the things we do to reduce losses are counter to delivering good flavor to consumers,” she said. “We really need to do both, and that was a big part of our message this week.”

Also at the event, the California Leafy Green Marketing Agreement (LGMA) discussed food safety principles, and Trevor Suslow, a UC Davis Plant Pathologist with the Postharvest Technology Center, discussed good agricultural practices (GAP) for food safety.

2021-05-12T11:05:54-07:00June 24th, 2016|

Downey Mildew Continues to Challenge Leafy Greens

Downey Mildew Continues to Threaten Lettuce and Spinach

By Patrick Cavanaugh, Farm Director

One of the many facets that makes California Agriculture so successful is the hard-working group of farm advisors who assist growers with a multitude of plant and pest issues. Steve Koike, plant pathology farm advisor for UC Division of Agriculture and Natural Resources, Cooperative Extension in Monterey County, noted, “It has been a fairly typical year, and I wouldn’t say any particular new disease has been noteworthy, which is good for the growers.”

Steve Koike, farm advisor of UC ANR Cooperative Extension, Monterey County.

Steve Koike, farm advisor of UC ANR Cooperative Extension, Monterey County.

Koike, whose research focuses primarily on understanding disease systems, identifying new diseases and examining new methods of disease control, said growers “don’t like to see new diseases come out of our work. The main concern, downey mildew, continues to be challenging for both lettuce and spinach growers.”

“We started in the early spring with heavy mildew on both lettuce and spinach crops,” explained Koike, “and it’s remained pretty heavy on lettuce throughout the spring and early summer here. Spinach downey mildew goes up and down, which is not unusual.” he said. “We had some heavy mildew weeks for spinach growers, then we didn’t hear anything, then we heard that it had died down, and then ten days ago there was another surge. It’s one of those things that is hard to predict because it is variable.”

Since starting his farm advising position in 1989, Koike has been involved in educational programs and applied research in vegetable, fruit and ornamental crop diseases. Because downey mildew can overwinter in perennial crops, its continued occurrence is not too surprising.

“Earlier this year, Jim Correll, my cooperator at University of Arkansas, other leaders in the industry and I finally did confirm race 16, a new biotype of downey mildew. A few years ago, it was only race 12; it is moving target,” he noted.

“Although we have confirmed Race 16 on spinach, we are a little concerned because there are reports of disease on some race 16-resistant varieties.” Koike said.

Featured image: Downey Mildew (Source: UCANR Cooperative Extension, Tehama County)

2021-05-12T11:05:55-07:00June 22nd, 2016|

Dried Plum Prices and Production

Not on the Same Page: California Dried Plum Prices and Production

by Laurie Greene, Editor

 

Gary Obenauf, agricultural research coordinator for the California Dried Plums Board, confirmed, “We had a normal crop last year. Prices are still up—have been up for the last several yearsand we are anticipating pretty good prices over the next several years for dried plum production.

Obenauf attributed good prices to crop shortage. “We went through several years of depressed prices, so we adjusted by taking out a number of acres a year ago,” he elaborated. “We’ve had acreage reductions in other parts of the world as well.”

Plums UCCE prunes

Plums (Source: UCCE)

So, while production is currently adequate for the current global market, Obenauf stated, “We’re now in the planning process again, trying to increase production. It’s not an easy thing to do.”

California is the world leader in dried plum production, according to the 2015 Prune Research Reports published in January, 2016 by the California Dried Plums Board, but is almost entirely dependent on the use of a single cultivar, the Improved French prune. “This monoclonal [cells or cell products derived from a single biological clone] situation lends itself to vulnerability to widespread disease, pest outbreaks and annual, statewide variations in yield caused by variable weather conditions that can negatively or positively affect fruit set and/or fruit retention.”

CA Dried Plum BoardSo despite enduring high prices, Obenauf explained, “we actually had real good chilling this year and a real heavy bloom during the bloom time, but we got over eight inches of rain in most of the plum production arearight in the middle of full bloom. We just didn’t have the bee activity to set a good crop. We’re estimating about half a crop this year.”

“As a grower,” Obenauf said, “you don’t have the production to make ends meet well when you have a short crop. And buyers like a more secure volume level. These up and down levels don’t help anybody.”

________________________

CURRENT RESEARCH

California Dried Plum Board has directed the development of new, acceptable or superior, dried plum cultivars to increase the efficiency of California dried plum production and give some protection against the risks involved with a monoculture. To stay globally competitive, current research goals include:

  1. Reduce production cost

a.  Develop new dried plum cultivars with cost-saving characteristics such as improved tree structure that would require less pruning

b. Improve fruit dry matter content to decrease drying costs

c. Increase plant tolerance to pests and diseases.

  1. Promote a broadening of the consumer base

a. Introduce new dried plums that differ in flavor or color

b. Improve dried fruit characteristics

  1. Adapt to California’s dry, hot climate

a. Introduce greater diversity of bloom timing in seedlings so the entire Californian crop will not be dependent on the same set of weather conditions during periods critical for fruit set and retention.

Featured Photo: Plums (Source: UC ANR Cooperative Extension)

2021-05-12T11:00:53-07:00June 13th, 2016|
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