University of California, Davis

UC’s Karen Klonsky Retires

Karen Klonsky Retires, Gets Major Credit for CA Agricultural Cost and Return Studies

By Patrick Cavanaugh, Deputy Editor and Laurie Greene, Editor

 

This is an exclusive interview with Karen Klonsky, UC Davis Cooperative Extension specialist emeritus, in the UC Davis Department of Agricultural and Resource Economics. Her expertise has been farm management and production, sustainable agriculture and organic agriculture.

CAT: Congratulations on your recent retirement!UCANR 100 years logo

Klonsky: Thanks Patrick. I retired on July 1, 2015, after 34 years. I started at UC Davis in ’81, straight from graduate school.

CAT: What has been your primary research interest?

Klonsky: My primary research areas are sustainable and organic agriculture. I have approached these subjects from several dimensions, including the economic feasibility of alternative farming practices, the size and growth of organic production in California, and factors influencing the adoption of alternative farming systems.

CAT: Wow, what a great career! I understand your interest in alternative farming systems began with your dissertation work comparing alfalfa systems with integrated pest management.

Klonsky: I studied agricultural economics in graduate school and started working with a professor in my department who had a joint appointment in agricultural economics and entomology. And I just became very interested in that research area.

I worked with entomologists and researchers on a computer model of plants and alfalfa weevils, and their interaction, plus a management component. I studied the plant and bug components, then did the management part and imposed it on top and asked, ‘If you did this, how many bugs would die?’ The plant model showed how much the alfalfa would grow, and at what point you could cut the alfalfa and achieve the desired yield. I never actually did any fieldwork.”

CAT: Since 1983, you not only directed ongoing Cost and Return Studies, but the development of an entire archived library of Cost and Return Studies for the UC Davis Department of Agricultural and Resource Economics. You recently completed studies on pistachios and walnuts, right?

Klonsky: Yes, both “Sample Costs to Establish and Produce English Walnuts In the Sacramento Valley, Micro sprinkler irrigated” and “Sample Costs to Establish and Produce Pistachios In the San Joaquin Valley-South, Low-Volume Irrigation.”

Our library contains studies about field, tree and vine crops and animal commodities. But since I retired, Dan Sumner, director, University of California Agricultural Issues Center and Frank H. Buck, Jr. Distinguished Professor for the Department of Agricultural and Resource Economics has taken that over and I continue to be peripherally involved.

CAT: These cost studies have been recognized worldwide.ARE Cost and Return Studies

Klonsky: Yes, and it has been very gratifying work. We decided to put them online routinely, and we have had a million downloads per year. Around 2005, Pete Livingston, my staff research associate, got the idea of scanning in the older studies. All of the newer studies were in electronic file format, so posting was easy. However, most of the older studies were paper copies, so we got a grant to scan and add them to our new online archive.

CAT: What was the most interesting thing about doing those cost studies?

Klonsky: I loved doing those studies. I really learned a lot because all cost studies are done directly with farmers we met through county farm advisors. I really got to know what farmers were thinking about and what their options were.

CAT: So those were real costs, not university costs?

Klonsky: Those were not university costs. The farmers tell us what equipment they will use, and then we calculate the cost of using their equipment—the fuel used to operate the equipment and the repair costs—with an agriculture-engineering program.

CAT: Do you have a math background?

Klonsky: Yes, I got my bachelor’s at the University of Michigan in mathematics. It was very helpful.

CAT: And you also earned your Ph.D. at the University of Michigan?

Klonsky: Yes.

CAT: So did you grow up in Michigan?

Klonsky: No, I grew up in New York.

CAT: And you just had an interest in going to Michigan State University?

Klonsky: Well, I had an interest in agriculture because I had an uncle who farmed corn and vegetables in upstate New York. We would go up there and I thought it was the most wonderful thing in the world.

CAT: What were some of the highlights of your career?

Klonsky: For many, many years, I was involved in the long-term on-campus sustainable agriculture research on land that is now on Russell Ranch, but it started as Sustainable Ag Farming Systems. We looked at four different farming systems, organic, low input, high-input, and we did a lot of analyses with cover crops and rotations. It was great to work on that project.

CAT: And you worked with USDA on the trends of organic farms?

Klonsky: And then I worked quite a bit with Department of Food and Agriculture on using the registration data for their organic farmers to compile statistics about how many farmers they had, what they grew, and the number of acres they planted with each crop. They had this database, which started in 1992 I believe, but they weren’t using it. Now the most recent registration analysis is available for 2012.

CAT: Just to try to get more data on the organic movement and organic growth?

Klonsky: Yes, because there was no data at all about it. Now NASS (National Agriculture Statistics Service) conducts a nationwide Organic Census, in addition to the regular Census of Agriculture.

CAT: I understand you served as an editor of the Journal of American Society of Farm Managers and Rural Appraisers (ASFMRA). What did that entail?ASFMRA

Klonsky: Yes. I did that for many years. ASFMRA is a national organization. The Journal of the ASFMRA comes out annually. As editor, I corresponded with the authors, assigned reviewers, and ultimately, accepted or rejected submissions, like any journal.

CAT: Did you travel a lot with your work and presentations?

Klonsky: You know, not so much, I went to Spain one time and France once for work. But I did travel around domestically to symposiums and conferences to speak on the economics of growing a lot of different crops, including many presentations at the EcoFarm Conference.

CAT: You worked and collaborated with some really interesting people.

Klonsky: Most of my important collaborations were conducting trials with people in other disciplines. For instance, at Russell Ranch, I was the only economist involved in the collaboration with plant pathologists and pomologists who ran trials to discover fumigation alternatives in the preplanting of trees.

Then I worked with people at UC Santa Cruz on alternatives for strawberry fumigation. Most of my work has been interdisciplinary.

CAT: California farming in general is huge, diverse industry. We produce 60% of the fruits and vegetables, and nearly 100 percent of the nut crops that people across the country consume. Any comments on that and on how valiant and resilient farmers are to get through year after year, particularly lately with the drought and the lack of water deliveries?

Klonsky: When I first started, there was a land price bubble, and there were a lot of bankruptcies because people had these land payments they just couldn’t pay.

It was kind of like the mortgage crisis that housing saw in 2008, agriculture saw in the early 80s.

CAT: So as you have been editor for the Journal of the American Society of Farm Managers and Rural Appraisers, you see land values going up and that keeps agriculture strong—the high land values, right?

Klonsky: Well, but it keeps it expensive. So now there is more and more leasing of land. As farmers retire from permanent crops, they have an orchard, but they don’t really want to sell it, so they lease it.

CAT: There you go. Keep it somehow in the family.

Klonsky: Yes, they try to keep ownership in the family. Or what we see also are these development leases where a young farmer can’t afford to buy the land, so they lease the land, but they pay for the trees to be planted.

CAT: So you are still coming to your office at UC Davis?

Klonsky: I am officially retired, but we have what we call a ‘partial recall’ where you can do things if you have funding. I have a project along with Rachel Goodhue, Professor, UC Davis Department of Agricultural and Resource Economics, with the California Department of Food and Agriculture, funded through the California Department of Pesticide Regulation. The Department of Pesticide Regulations is required by law to do an economic analysis of all proposed new regulations. So that is what I am working on.

CAT: Give me a couple of examples. VOC regulations?

Klonsky: Yeah, we do VOC.

CAT: Are you looking at sustainable groundwater legislation?

Klonsky: No, just pesticide regulation. It is funded by the Mill tax on pesticides.

CAT: Did you work with a lot of graduate students at UC Davis?UC Davis Graduate Studies

Klonsky: Oh yeah, I worked with a lot of graduate students coming through. One of them was on different ways of pesticide management on eucalyptus trees. I said I went to Spain. On that trip, I spoke about growing eucalyptus for firewood.

CAT: That was an economic study, wasn’t it?

Klonsky: Yes it was. They grow it not for firewood, but for paper. But that never really caught on here.

CAT: Are you bullish on agriculture? Do you think Ag is going to continue thriving in California?

Klonsky: Oh, sure. Oh, sure. But I think that the water situation is definitely real, and I think agriculture already has definitely made tremendous strides in irrigation systems, especially the subsurface irrigation in vegetables, in particular processing tomatoes, which I worked on.

CAT: That was a huge improvement in growing tomatoes. And people didn’t think it was going to work, but it turned out to be fantastic.

Klonsky: Yeah, a really win-win on that one. And orchards are getting more efficient. If you look at the water per pound of crop produced, you see major improvements with water efficiency.

CAT: Absolutely. Of course, most plants transpire most of the water they take up through the roots, up through the leaves and the stomata cells. By the way, do you have any interesting stories regarding your career?

Klonsky: It’s not the highlight, but the weirdest thing of my career is I got an email from somebody in Ministry of Agriculture and Fisheries from the United Arab Emirates. They wanted me to give a live presentation about Cooperative Extension in California and how it’s organized.

So I had to go to this office building in downtown Sacramento at 10:00 at night because of the time difference. I went into a conference room that had a special kind of projector so I could see them and they could see me. And on the monitor I see all these men walked in—they were all men—and half of them were in Western dress and half of them were wearing a Sheik-like headdress, with a band that sits on top and holds it on.

That was crazy, just being downtown after everybody is gone and the whole building was dark and quiet, except the one room that I was in.

CAT: How long was the presentation?

Klonsky: Gosh, maybe an hour.

CAT: You needed to do some research for that presentation?

Klonsky: Yeah, I had to do some research, I had to think about Cooperative Extension in a different way—the big picture. 

CAT: Keep up the good work, and I hope you are enjoying retirement.

Klonsky: Yeah, I come in two days a week, so it is nice to see everybody. I still get a lot of emails, which I need to answer.

2016-08-18T13:54:40-07:00January 26th, 2016|

Ag Collaboration with the Netherlands

Karen Ross: Ag Collaboration with the Netherlands

By Charmayne Hefley, Associate Editor

 

One of the best ways to overcome the challenges that arise in farming, is ag collaboration with countries that have already found solutions to the issues we face.

Karen Ross, secretary, California Department of Food and Agriculture, led a delegation of Californians to the Netherlands last month, “for shared discussion on all of the ways we can collaborate on climate-smart agriculture,” Ross said, “including water-use efficiency and improved fertilizer use.”

“In particular, the Netherlands has a shared issue with us—nitrates in groundwater—and what we can do to improve our water management and fertilizer management to avoid that. They’re doing some interesting things with greenhouse technologies and salt-tolerant crops, so we saw some real opportunities. We had university people with us to do some trials here.”

Ross’s group was able to visit Wageningen UR (University & Research centre), Netherlands’ prominent agriculture university. She said between the University of California, Davis and the Dutch university, “we found ways that we can collaborate together to find the solutions that are not just about here in California,” Ross said. “If we can solve these problems on water-use efficiency, desalinating brackish water, and salt-tolerant crop issues in California, we will make a contribution to solving these problems on a global basis.”

Ross’s team also visited many farmers, primarily of specialty crops. Ross commented, “We saw some of their digester technology, which we know is one of the solutions for our dairies. We really want to advance that technology, make it affordable and provide value to our dairies.”

2021-05-12T11:05:58-07:00January 22nd, 2016|

Irrigation Uniformity in Almonds

Attaining Irrigation Uniformity in Almond Orchards

By Patrick Cavanaugh, Deputy Editor

Terry Prichard, a water management specialist with UC Cooperative Extension at UC Davis for 35 years whe he retired five years ago, is still at work. Prichard is currently collaborating with Almond Board of California to improve water management in almonds, especially irrigation uniformity. “I am still researching nitrogen management for all crops through a grant through the UC from CDFA, and I am helping the Almond Board with their irrigation initiative and their Irrigation Improvement Continuum,” Prichard said.

Prichard explained, “We try to apply water in order to get an average amount of water throughout the field and do that very uniformly. When it is done non-uniformly, farmers are using extra water to reach all parts of the field. So improving irrigation uniformity allows us to apply less total water, but still meet the crop’s water demands,” Prichard noted.

Dormant almond trees with micro-sprinkers

Dormant almond trees with micro-sprinkers

Improvements to irrigation uniformity can be done in any field, according to Prichard. He suggests your designer should strive for good irrigation uniformity when creating your irrigation design. “However,” he clarified, “if you design a less expensive minimal system which uses minimal size piping, you end up using extra energy to drive the pressure through the system to deliver water to the end. Driving that pressure causes friction loss in the pipe—pressure differentials from the top of the system near the pump to the end of the system on the last sprinkler or dripper. These pressure differentials deliver different volumes of water out of each sprinkler, micro-sprinkler or drip emitter, and that is what drives non-uniformity.”

Also important is irrigation maintenance—making sure the system is flushed out and emitters are changed when needed. “Improving uniformity with large orifice-type sprinklers or even larger micro-sprinklers,” stated Prichard, “tends to be a little easier because the holes are larger and don’t plug as easily. In smaller orifice-type systems such as drip irrigation, emitters easily become clogged with physical particulates or biological particulates like slime and algae. Most commonly, lime or manganese forms inside the emitter, clogs it up and reduces the flow, so maintenance of those systems is very important to maximize your designed-in uniformity,” he said.

Continuum irrigation is an important concept because there is a whole array of current grower practices, some at the minimum level for what we consider for most growers, some are transitioning to more sophisticated methods, and others are already there. I think this continuum will reassure people who are at the minimum level and encourage them to adopt more technological solutions to irrigation scheduling.”

Prichard said the Almond Board’s Almond Irrigation Improvement Continuum doesn’t have a set timeframe. ”It has more accomplishment phases and so what we hope to do is provide each grower with information that they can use on their farm to improve their efficient use of water to produce almonds.”

“And the Almond Board is making these strategies and new technology systems web-based,” noted Prichard. “It is very easy with a web-based system to input new things. The current continuum on the website conceptualizes the basic visual measurements and practices, and you can click on a specific practice for more information on how to incorporate it to accomplish your goals. Then there is a link to a specific discussion such as how to accomplish these efficiencies using drip irrigation, for example,” said Prichard.

Double drip irrigation on Almond Trees

Double drip irrigation on almond trees

”Almond growers have made tremendous strides in improving their efficient use of water, primarily from changing older flood-type irrigation systems to the newer pressure systems. This progress has been tremendous for the industry and for growers in terms of producing more crop using less resources.”

“However, we are now at the next level of using these methods, such as weather-based irrigation scheduling estimates, followed by soil- and plant-based checks, to ensure that you are delivering just the right amount of water,” explained Prichard. “The continuum has generated a lot of grower interest. We have several ways to go and many more tools now than we did ten or twenty years ago.”

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Introduced at The Almond Conference in December, the full Irrigation Improvement Continuum and comprehensive background materials will be posted on the Almond Board’s website by March 1, 2016, providing “one-stop shopping” for almond irrigation management at all levels.

According to Almond Board’s January 2016 Outlook newsletter, the continuum describes three proficiency levels and provides a comprehensive program of irrigation management and scheduling practices in five key areas, and also explains how these practices can be effectively integrated at each level. The five key areas include:

  1. Measuring irrigation system performance and efficiency;
  2. Estimating orchard water requirements based on evapotranspiration;
  3. Determining the amount of water applied;
  4. Evaluating soil moisture; and
  5. Evaluating plant water status.

Proficiency level 1.0 (minimum) outlines research-based irrigation management practices that are within reach of all California Almond growers. Proficiency levels 2.0 (intermediate) and 3.0 (advanced) enhance practices to more sophisticated levels to attain even more “crop per drop.”

The goal is to assist all almond growers in meeting level 1.0 proficiency. Beyond this, Almond Board will work with growers to help them progress along the continuum to proficiency levels 2.0 and 3.0, in partnership with technical experts and resources available to California Almond growers, such as through University of California Cooperative Extension.

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Link:  Almond Board of California

2021-05-12T11:05:59-07:00January 11th, 2016|

Grower-PCA Communication is Critical

Grower-PCA Communication is Critical

By Laurie Greene, Editor

Emily Symmes, UC Cooperative Extension Integrated Pest Management Advisor, Butte County, is amazed at the professionalism of growers and Pest Control Advisors (PCAs). “I deal directly with growers and land managers, as well as crop advisors and pest control consultants” said Symmes, “and everyone has so much to do out there, so grower-PCA communication is critical. Sometimes it is amazing how they get it all done. I feel lucky, as I get to focus on the pest management and other production activities throughout the season,” she noted.

Symmes maintains there has to be a lot of communication back and forth between the growers and PCAs and herself. “And within each question there is a deeper conversation,” she elaborated, “but it can get lost in the shuffle of running from one thing to the next. Everything is very time sensitive in agriculture; we don’t have control over weather and things that tend to drive pest population cycles.”

“So within each of those key pest management questions, there is a subset of questions:

  • How do we know that it is time?
  • Are we doing the right thing at the right time?
  • Are we using the right materials?
  • Are we considering the big picture?’”

“The other big key ingredient is follow-up—evaluating:

  • How did we do?
  • Did the treatment work?
  • Did it cause any potentially negative impacts that we weren’t aware of?
  • Did we have to come back and do something additional (after-the-fact)?
  • More questions about the treatment, time, and material.”

    PCA Responsibilities (CA DPR)

    PCA Responsibilities (CA DPR)

And on any California Department of Pesticide Regulation (DPR) recommendation, there is a question before the last signature line, ‘Have you thought of any other alternatives before you make this application?’ IPM practitioners sometimes misunderstand this to mean, ‘Well they don’t want us to treat.’ But it is really an acknowledgement that we know how important all of our management tactics are,” Symmes noted.

“Cultural practices are important, pesticides are important, but knowledge is really the key ingredient. Growers and PCAs are knowledgeable, have explored the alternatives and know what is going on in this particular orchard block they are signing this legal document for. Honestly, I think we do a great job.”

“I think California has done a fantastic job with this,” said Symmes,”but is there room for improvement? I think there always is.”

2021-05-12T11:05:59-07:00January 7th, 2016|

Avian Influenza

Waterfowl  Migration Flyways Have Poultry Industry on Guard

By Brian German, Associate Editor

We are at the peak of migrating bird traffic flying north to south, and poultry operations throughout California and the rest of the country are looking skyward with dread. The industry aims to detect all flyways as migrating birds are suspected of spreading Asian Highly Pathogenic Avian Influenza (HPAI) A (H5N1) virus that devastated the poultry business last year throughout the Midwest with some lesser problems in California. In fact, more than 48 million birds, primarily turkeys and laying hens, were infected and had to be depopulated last year throughout the Midwest.

“These global flyways waterfowl use to move north and south and back again every year are basically like freeways,” said Maurice Pitesky, a Veterinarian and UC Cooperative Extension assistant specialist and UC Davis School of Veterinary Medicine lecturer in Population Health & Reproduction. “And in those freeway lanes,” he continued, “different birds interface with each other. We have a Pacific flyway that covers California, which can interface with the East Asia and Australian flyways. If you look at the genetics found in North America, especially in California, the genetics match some of the HPAI found in South Korea.”

Locating birds in flyways can alert poultry operations to implement immediate measures to prevent potential HPAI spreading on anything on the outside or inside of the poultry house.

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Feral Swine Also a Problem

Pitesky noted a great abundance of feral swine in California, and the geographical extent is poorly understood. “But what we do know with respect to influenza is that although feral swine, and swine in general, are unique species, influenza viruses from humans and influenza viruses from birds can infect swine. That represents one of the ways we get new strains of Avian Influenza that could adversely affect all animals, including birds and potentially humans,” he noted.

Of course, poultry HPAI is not a problem for humans. Pitesky noted, “When people say ‘highly pathogenic,’ it has nothing to do with whether humans get it or not. The ‘highly pathogenic’ label is specifically for birds in that it makes birds sick. There is no evidence any of those strains we found in North America are zoonotic, meaning able to infect humans, at this point,” he said.

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Biosecurity Explained – 6 Simple Steps

The USDA Animal and Plant Health Inspection Service (APHIS) wants to help poultry owners keep their birds healthy by practicing biosecurity to reduce the chances exposure to animal diseases such as avian influenza (AI) or exotic Newcastle disease (END).

APHIS advises the following consistent daily biosecurity practices:

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The USDA’s Fall 2015 HPAI Preparedness and Response Plan to preventing and responding to future HPAI cases, in collaboration with industry and State partners, includes:

 Promoting improved on-farm biosecurity practices in order to prevent future HPAI cases to the greatest extent possible

 Improving HPAI surveillance in wild birds as a means to provide “early warning” risk information to States and industry

 Expanding Federal, State and industry response capabilities, including availability of personnel, equipment, and depopulation, disposal and recovery options

 Improving USDA’s capabilities to rapidly detect HPAI in domestic poultry and to depopulate affected flocks within 24 hours to reduce the environmental load of HPAI viruses and their subsequent spread

 Streamlining the processes for payment of indemnity and the cost of eliminating viruses so that producers receive a fair amount quickly, to assist them in returning to production

 Enhancing our ability to communicate in a timely and effective way with producers, consumers, legislators, media, and others regarding outbreaks and other information

 Making preparations to identify and deploy effective AI vaccines should they be a cost beneficial addition to the eradication efforts in a future HPAI outbreak.

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Resources:

UC Davis School of Veterinary Medicine 

2015 Avian Influenza News (Bird Flu)

California Animal Health and Food Safety (CAHFS) Laboratory System

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CDFA

Poultry Facility Biosecurity Risk Assessment Guide: “We will always be one step ahead.”

Highly Pathogenic Avian Influenza (HPAI) outbreak in the United States

Avian Entry Requirements into California Update

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USDA

Animal and Plant Health Inspection Service

2015 Avian Influenza News 

Avian Influenza Disease

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2021-05-12T11:17:15-07:00December 22nd, 2015|

Avian Influenza Mapping Plan to Prevent CA Outbreaks

High Pathogenic Avian Influenza Mapping Plan (HPAI) to Prevent Outbreaks in California

By Patrick Cavanaugh, Deputy Editor

In 2014 and 2015, the outbreak of High Pathogenic Avian Influenza (HPAI) caused unprecedented damage to the mid-western commercial poultry industry, requiring the depopulation of 48 million birds, particularly turkeys and laying hens. There were isolated cases in last autumn in California as well. Migrating birds, generally considered to be the source of HPAI, move throughout the state in their flyways this time of year.

USDA Pacific Flyway Map

USDA Pacific Flyway Map

Maurice Pitesky, a UC Cooperative Extension population health & reproduction assistant specialist with an appointment in poultry health and food safety, emphasized the importance of the flyways, “These global flyways that waterfowl use to move north and south and back again every single year are like freeways. And in those freeway lanes, different birds interface with each other.  So, we might have a Pacific flyway that covers California, but that Pacific flyway can interface with the East Asian and Australian flyway in the Northern Arctic. If you look at the genetics of the strains that were found in North America, especially in California, the genetics match some of the HPAI found in South Korea for example,” Pitesky said.

The Avian Influenza Mapping Plan is like overlaying maps of birds’ flying patterns for an early warning system for commercial operations. Pitesky observed, “We’re really just scratching the surface in how we can utilize maps with respect to surveillance and risk-mapping. For example, if I can locate on a map, where waterfowl, flooded rice fields, or wet fields are, and I can also determine where commercial poultry operations are, then I can start understanding which operations are at highest risk.”

I can triage my focus, outreach, and biosecurity efforts to those farms that are most closely located.

“New techniques are available so our national network of weather radar can actually be leveraged, and that data can be utilized remotely to understand in real time where waterfowl are hanging out. Eventually we can use that information to warn farmers in real time if there are migrating waterfowl near their farm,” he said.

2016-05-31T19:27:03-07:00November 18th, 2015|

UC Davis Water Policy for Food Security

UC Davis Water Policy for Food Security Global Conference

By Laurie Greene, Editor

A Global Conference for Water Policy for Food Security was held at UC Davis earlier this week to focus on global ground water supplies. Many speakers came from around the world to talk about water supplies in their own countries.

The take-home message:  Supplies are limited, but growers are being very efficient and groundwater recharge is a priority.

Josette Lewis, associate director of the World Food Center at UC Davis said, “When I joined UC Davis, it was very clear that water is something in which this campus has enormous technical expertise and has expertise to inform and engage in state water policy,” she said.

“We are working with everything from farmers to state agencies that manage water resources. Part of the vision of the World Food Center is, how do we expand that impact? How can UC Davis have an impact on national and international issues? How do we get more benefit for society from what we do? It became very obvious that leveraging the expertise we had here in California to an international discussion of issues made a lot of sense.”

Lewis noted that the conversations during the two-day conference were an exchange of ideas on groundwater sustainability, “I think the quality of the discussion over the last few days exceeded our expectations,” she said.

“We really brought in some of the world’s leading experts in these areas. From talking to the participants some of them are walking away with a new and energized way of thinking about how we can create solutions to address the sustainability of our water supply and ensure that we have water available for food production globally,” Lewis said.

World Food Center at the University of California, Davis

International Food Policy Research Institute

Twitter  Join the conversation on Twitter at #WaterSecurity

2016-05-31T19:27:07-07:00October 8th, 2015|

Armyworms Invade Rice

Luis Espino: Armyworms Invade Rice

By Charmayne Hefley, Associate Editor

Armyworm Larvae

Larva of the armyworm, Mythimna unipuncta.
Photo by Jack Kelly Clark, UC IPM.

Farmers face many threats to their crops on a daily basis. Luis Espino, rice farm advisor UC ANR Cooperative Extension, Colusa County, said rice farmers are on the lookout for two caterpillar infestations during the year when armyworms invade rice fields. “The first one occurs sometime in June,” Espino said. “At that time all they do is just eat the foliage, and you can usually see it when you walk into a field. Nevertheless, the rice has a very good capacity to recover from that type of injury.” Espino’s UC Rice Blog explains it is difficult to accurately estimate yield losses due to early armyworm damage because it can reduce tillering, delay the crop, and cause uneven maturity.

“Heading” occurs when the rice plant prepares to enter its reproductive phase. The first sign, called the ‘booting’ stage, is when the leaf stem that conceals the developing panicle bulges. Then the tip of the developing panicle emerges from the stem and continues to grow. Rice is said to be at the ‘heading’ stage when the panicle is fully visible. Flowering begins a day after heading has completed. As the flowers open they shed their pollen on each other so that pollination can occur. Flowering can continue for about 7 days.  (Source: Rice Development, Ricepedia.) 

“The second infestation usually occurs in mid- to late-August when the rice is heading out,” Espino said. “At that time, armyworms can feed on the panicles, [causing the kernels to dry before filling], resulting in blanks [without kernels to harvest] on the panicles and broken panicle branches. That’s when armyworms are more important.”

Espino said that the first infestation this year was relatively large, making it harder for the treatments to control the armyworms as they devastated the rice fields. “There were some areas in fields where the rice was down to the waters,” Espino said. “so all the foliage was consumed, and sometimes only a little stem was left standing.”

During the second armyworm infestation, however, Espino said the rice fields were not as badly affected as they had been in the first attack. “We did see some fields with armyworm injury,” Espino said,“ and some farmers had to treat their fields. The numbers were just so big that the treatments were not controlling them.”

 

Resources:  

2016-05-31T19:27:09-07:00September 30th, 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|

E.A.T. Foundation – Connects Us to Ag

Kelly Deming Giacomazzi on the E.A.T. Foundation

By Charmayne Hefley, Associate Editor

There is a disconnect between consumers and an understanding of where their food originates. Kelly Deming Giacomazzi is the executive coordinator for the Education and Agriculture Together Foundationbetter known as the E.A.T. Foundation—a Hanford-based nonprofit that bridges this disconnect by providing educators with hands-on learning tools to teaching their students how food and other agricultural products are produced.

“They teach their students that jeans don’t just come from Old Navy or Walmart,” Giacomazzi said, “and their daily food doesn’t come from the grocery store.”

Giacomazzi said the E.A.T. Foundation offers several workshops for educators, including a 3-day “Intro to Ag” program, during which educators from all over the state are hosted by local farm families. “This is where the hands-on learning takes place. For example, educators learn to drive a tractor, siphon-irrigate, spray for bugs with a Pest Control Advisor (PCA), and visit a dairy. In the past and occasionally now, we visit the UC Davis Veterinary Medicine Teaching and Research Center (VMTRC) and AgVentures! at the Heritage Complex, both of which are in Tulare County, to give teachers a brief overview of what agriculture is doing to provide food and clothes for people in the state and in the nation.”

Giacomazzi also said E.A.T. hosts a two-day workshop on water. “We tour a hydroelectric plant, a dam/reservoir area, and distribution centers,” Giacomazzi said. “We talk about water laws, environmental impacts, and farm efficiency as well.”

The Foundation also offers summer and fall harvest workshops, plus a career workshop. Giacomazzi stated, “Many scholarship funds are available for agriculture majors, yet there aren’t enough students majoring in this field.”

2016-05-31T19:28:04-07:00September 15th, 2015|
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