Study: New Fumigation Stategy

New Fumigation Techniques for Soilborne Diseases

By Tim Hammerich with the Ag Information Network

Protecting fruit from soilborne pathogens is a big concern for strawberry growers. Researchers at the University of California Ag and Natural Resources are looking to see if a drip application of fungicides might be effective, noted UC Cooperative Extension advisor in entomology and biologicals, Surendra Dara.

“This particular study was based on a request from FMC. They wanted to evaluate if drip application of some fungicides could be supplemental to whatever the growers are currently following to control soilborne diseases. And they also wanted to see if it has any impact on improving the crop health, and potentially other diseases,” said Dara.

Dara noted the results from the first trial were positive, but he didn’t see enough incidence of soilborne disease in the control group to be sure. He’s optimistic though, given drip application of fungicides has been effective on other plant pathogens.

“They do apply fungicides to drip, but not necessarily for soilborne diseases. The management practices are usually obtaining clean transplants and fumigating or crop rotation. These are the typical management recommendations for soil-borne diseases,” explained Dara.

Dara hopes to continue to study the potential for this management practice.

California Ag Today2021-07-23T21:22:40-07:00July 22nd, 2021|

Naturipe Farms Produces Berries for Global Consumers

Naturipe Farms is Leading Growers of Blueberries in the World

By Tim Hammerich, with the Ag Information Network of the West

Naturipe Farms is a brand most Americans have seen in the supermarket. What many may not realize is that the company is actually owned by growers. California Ag Today’s Patrick Cavanaugh recently spoke to Jill Overdorf, who is Naturipe’s Director of Business Development for Food Service & their Corporate Chef.

“Producing fresh berries since 1917, Naturipe Farms is unique to the produce industry with a partnership between four highly esteemed berry growers: Naturipe Berry Growers, MBG Marketing(Michigan Blueberry Growers), Hortifrut, and Munger Companies,” said Orverdorf.

Overdorff said Naturipe is the leading grower of blueberries in the world, second in strawberries, and also produce raspberries, blackberries, avocados, and cranberries.

“Our strawberry growers had a very challenging year, but they developed some great crops,” noted Overdorff. “We also have a good breeding program. Our blueberry growers, the Mungers, are the largest growers of blueberries in California. They had a phenomenal year, and they are branching out and are enormously innovative. They’re leading our value added program with their proprietary wash process, which enables 21 days on a fresh blueberry shelf life for a snack product,” explained Overdorff.

“Our blackberries and raspberries, we have a number of proprietary varieties, including the Centennial Raspberry and the Madeline Blackberry, both flavorful and non traditional berries because of their load seed count and they’re delicious flavor,” she said.

California Ag Today2020-02-01T08:07:49-08:00January 31st, 2020|

Produce Passes All Residue Testing in 2017

FDA Produce Residue Sampling “Once Again” Verifies Safety

Last week the Federal Food and Drug Administration (FDA) released its 2017 pesticide residue sampling data results. FDA concluded: “The latest set of results demonstrate once again that the majority of the foods we test are well below the federal limits set by the Environmental Protection Agency.”

Note the term “once again” in FDA’s statement. They used it because government residue sampling data year after year reaffirms the safety of our food and the exceptionally high level of compliance among farmers with laws and regulations covering the use of organic and conventional pesticides.

Let’s get a little technical for a moment and focus on how FDA residue sampling is protective of consumers. FDA employs a three-fold strategy to enforce the Environmental Protection Agency’s (EPA) tolerances or safety standards for pesticide residues.
If you haven’t heard – September is National Fruit and Vegetable month. Yes, it is time to celebrate the only food group health experts and nutritionists agree we should all eat more of every day for better health and a longer life.
While decades of studies have shown the nutritional benefits of fruits and vegetables are overwhelming and significant, the safety of both organic and conventional produce is also impressive. Government sampling data shows an over 99% compliance rate among farmers with the laws and regulations required for pesticide applications on organic and conventional fruit and vegetable crops. This led the United States Department of Agriculture to state that: “The U.S. food supply is among the safest in the world.”

Many health organizations are promoting National Fruit and Vegetable month to remind consumers about the importance of increasing consumption – only one in 10 of us eat enough of these nutrient-packed foods each day.

However, studies show a growing barrier to consumption is fear-based messaging which inaccurately calls into question the safety of the more affordable and accessible fruits and veggies. This messaging is predominantly carried by the same activist groups year after year despite studies which show that “prescriptions” for fruits and veggies could reduce health care costs by $40 billion annually. Or that 20,000 cancer cases could be prevented each year.

California Ag Today2019-09-23T15:06:22-07:00September 23rd, 2019|

Even Organic Production of Strawberries Not Sustainable

Data Shows Even Organic Production Uses Resources

By Jessica Theisman, Associate Editor

Is growing strawberries organically sustainable? That’s something that Surendra Dara is trying to find out. Dara is a UC Cooperative Extension Advisor in Entomology and Biologicals. He is based in San Luis Obispo County as well as Santa Barbara County. Dara met with California Ag Today recently and let us in on his research and some of his findings.

“I have not come across a mainstream grower that has told me that organic is sustainable,” Dara said.

After pulling in data and understanding the inputs, Dara is asking if there is anybody out there that has a different opinion.

“When we are talking about sustainability, we are looking only in terms of non-chemical being the sustainable, ecological practice,” he said.

There are such things as organic pesticides that harm natural enemies.

“Some of the organic ones can be as bad as some of the chemicals,” Dara said.

Data is showing that growing strawberries organically has not been sustainable economically. In terms of the carbon footprint and the bigger picture, “even organic production is not sustainable with the resources because certainly some resources are being used up,” Dara said.

California Ag Today2021-05-12T11:05:02-07:00July 10th, 2019|

2019 Strawberry Harvest is Brisk

Labor Tight, But Incentive Programs Keep Berries Harvested

By Patrick Cavanaugh, Editor

The 2019 strawberry harvest is going strong, and field employees are busy picking at the height the ripeness. Carolyn O’Donnell, a communication director for the California Strawberry Commission based in Watsonville, said lots of hands are harvesting the berries.

Carolyn O’Donnell, communications director, California Strawberry Commission

“We need to harvest the berries when ready,” O’Donnell said. “We can’t leave the ripe berries on the plant a few extra days, and we can’t harvest them early and then ripen them in some other modified atmosphere. They have to be picked when they’re ready to go. So, timing is part of it, as well as just having an adequate supply.”

O’Donnell explained how growers are handling the tight labor supply.

“It’s been a challenge. The growers have been doing all kinds of different incentive programs. Definitely, wages have been raised, different benefits have been offered, but we do find that growers are still struggling to keep up with their harvest,” O’Donnell said.

And when those harvesters out there picking the strawberries, they want to make the money, and they are in fact running back and forth with their trays to refill them.

“We are definitely in a busy harvest season right now. And so with a quick harvest comes incentive pay. And harvest workers will be hustling a little bit more. There are lots of berries to pick. There is money to be made,” O’Donnell said.

California Ag Today2019-07-08T16:37:07-07:00July 8th, 2019|

Bio-Control for Strawberry Growers

Strawberry Growers Lean on Biologicals to Manage Pest

By Jessica Theisman, Associate Editor

California Ag Today recently met with Surendra Dara, a UC Cooperative Extension entomologist based in San Luis Obispo County. According to Dara, California strawberry growers follow many sustainable options.

“Growers are well-educated and have a support system that provides information to them very regularly,” Dara said.

Growers try to apply as much of the IPMs as possible, but there is always a lot more scope in terms of using non-chemical alternatives. That is an area that has room to grow.

“The more we know about the options and their potential, they can be more adopted,” Dara said.

He explained that the strawberry growers often lean on biological insects such as beneficial mites that treat those damaging insects. It’s all part of IPM.

The insects are used outdoors along with in greenhouses.

“A bio-control is very well done in strawberries for mite control, but we do not have similar natural enemies for other pests,” Dara said.

There are botanical and microbial options for pest and disease management, and a lot of work is being done about understanding how they work and placing them in the right strategy.

“So, there is definitely plenty of options for us,” Dara said.

California Ag Today2021-05-12T11:01:47-07:00June 28th, 2019|

Electric Tractors Will Soon Be Available

With So Many Electric Cars, Why Not Electric Tractors?

By Patrick Cavanaugh, Editor

There are many different models of electric cars—they are even mainstream in most U.S. cities and other countries—and now farmers may soon have electric tractors to use in specialty crops in California.

Bakur Kvezereli is president and CEO of Ztractor, the first autonomous electric tractor for specialty crops. Kvezereli, who is based in Palo Alto, explained why the tractor is being developed in California.

“First, California is our market. Second, we teamed up with some great engineers, who graduated from Stanford, and my school, which was MIT. We were friends, and we wanted to look into this technology looking to replace the 25 or 30 HP diesel motor as well as the 30-gallon diesel,” he said.

“And we started as an electric tractor company in September 2017. And in two months, we realized that to achieve an electric tractor, you have to find a solution for making it autonomous,” Kvezereli explained.

“We now have three models in our manufacturing pipeline. One 24 horsepower will be available to the farmers this year. The next model will be a bigger tractor, 45 horsepower, which will be available 2020, and a 125 horsepower will be available in 2021.”

“Our basic tractor will have all the usual features found in most other tractors. The premium model line will have more features, especially on the software and hardware area. The zTractors will have no emissions and no hydraulics—just strong torque power.”

A four-hour charge will provide 6 to 10 hours of work in the field. “It requires only level two charging similar to car charging. “We are exploring a better battery, however currently it is the nickel ion technology,” Kvezereli said

“Horsepower is where we estimate the metrics for a tractor. What we think farmers care about is torque. In electric, to achieve higher torque is much easier than to achieve it with diesel power, and electric technology in general is very reliable for many types of tasks,” said Kvezereli.

The electric tractors keep the same three-point hitch as well as a PTO, both electrically operated.

“We build everything based on the requirements for the PTO and three-point hitch, and I think that’s what makes the Ztractor different from any other robotics companies that will provide a better tractor. It’s a general purpose and can replace a regular traditional tractor,” he said.

The main farming operations will be strawberry vineyards and vegetable operations. The tasks will include soil preparation and crop management. Harvest tasks are not yet available.

The prices for the tractors, calculated at $1,000 per horsepower, are similar to traditional tractors.

California Ag Today2019-06-05T15:01:14-07:00June 5th, 2019|

Strawberry Labor Issues May be Helped

New Technology in the Strawberry Industry Addresses Labor Issues

By Mikenzi Meyers, Contributing Editor

Once again, technology has taken crop production to the next level. This time, strawberry growers are reaping the benefits of technological advancements. Pete Molero and his team at Plantel Nurseries have come up with a transplanting machine that will address labor challenges in the strawberry field.

“We have come up with a transplanting machine that uses a 25-man crew to plant strawberries that have foliage on them and have a plug just like a transplant vegetable plug now,” Molero explained.

He further added that the machine can plant an acre an hour, a pace that would typically take 80 to 100 employees to achieve.

According to Molero, the process is simple.“The plug goes in, the plant gets dirt, and its set and ready to go.”

He described the root itself as a two-and-a-half to three-inch plug with first growth leaves at about three to four inches tall. As of right now, there is only one variety of strawberry available for the summer. However, new ones are being tested in hopes that this new equipment will continue to make improvements.

California Ag Today2019-01-23T16:37:26-08:00January 23rd, 2019|

Berry Industry Without Methyl Bromide

Berry Industry Must Now Work Smarter in Post Methyl Bromide Era

By Patrick Cavanaugh, Editor

The strawberry fruit production industry, with the exception of plant nurseries, has reached the point where methyl bromide is no longer available under any circumstances, and new alternatives or strategies must be found to protect strawberries from serious diseases.

The University of California is focused on a holistic approach, which includes the tried-and-true method of integrated pest management in this post Methyl Bromide era.

“None of the alternative fumigants are as good as methyl bromide,” said Mark Bolda, UC Cooperative Extension Farm Advisor for Santa Cruz County, who is working closely with growers on alternative methods. “So one area that we could focus on is different strategies at the time of planting. For example, strawberries have different chill times. You must add cold conditioning to give the plant more vigor.”

Mark Bolda

There are many questions. Could the colors of the plastic mulch that growers are using manage the temperatures of the soil? How about the amount of fertilizer that is being used?

“We need to start integrating these variables into the way we grow strawberries with the lack of fumigants that are as effective as methyl bromide,” Bolda explained. “We need to integrate all these things and others in order to grow berries with the lack of available fumigants that are as effective as methyl bromide.”

“It’s a little disappointing that here we are at zero-hour and we do not have this worked out,” he continued. “The University of California Cooperative Extension have had a number of meetings in my office, as well as other places where we get many people in the same room to try to figure out what we know and what we don’t know.”

“There’s a lot of smart people in the industry, and I know we can get on this and find solutions,” he said.

California Ag Today2021-05-12T11:05:06-07:00January 8th, 2019|

Strawberry Commission Oversees Valuable Crop

Strawberries in California

By Jessica Theisman, Associate Editor

Strawberries are California’s sixth most valuable crop which makes strawberry research a valuable tool for California farmers. Mercy Olmsted is senior manager of production research and education at the California Strawberry Commission. Growers in the California Strawberry Commission have invested over $28 million into research. These include areas such as diseases, insects, and weeds—all in an effort to help solve production challenges and boost economic gains.

“We are a commission that’s funded by the growers, and so we do research that meets their research priorities,” Olmsted said.

So far, $13 million has been invested in research to explore alternatives to methyl bromide. The commission says that strawberry farmers continue to invest in researching fumigant alternatives.

“We also work with researchers. We have a robust grant program, and we work with those researchers in order to assist them in their field trials,” Olmsted explained.

Some of their researchers are in house, and others are from the USDA and university researchers.

“We develop training programs for our growers because we work for the growers. We can contact them as often as we need to, and we are able to see how things and research priorities might change in the industry,” Olmsted said. “There are a number of facilities and a board that helps direct research priorities and any necessary changes.”

For more information on strawberry research being done by the California Strawberry Commission visit calstrawberry.com.

California Ag Today2021-05-12T11:05:07-07:00January 2nd, 2019|