ReTain® Plant Growth Regulator for California Now Registered for Almonds

New Use Improves Almond Nut Set

October 20, 2016

WALNUT CREEK, Calif.—Valent U.S.A. Corporation today announced the California Department of Pesticide Regulation (CDPR) registration of ReTain® Plant Growth Regulator for California on almonds. ReTain increases nut set in almonds to help ensure an optimum crop load.

ReTain extends the viability of almond blooms by giving more opportunity for pollination of the flowers, which improves nut set potential. The naturally-occurring active ingredient in ReTain works by reducing ethylene production in almond flowers and delaying flower and stigmatic senescence. This effect results in longer flower viability, which allows more time for pollination to occur. Field studies have demonstrated that ReTain extends the life of an almond bloom by 43 percent over the untreated check.

"Keeping the almond bloom viable for longer is important for pollination – especially if wind, cloudy days or rain interferes with bees foraging," said Kevin Forney, Valent product development manager. "By keeping the flower alive longer, ReTain helps ensure the success of a grower’s hive investment."

Commercial trials on more than 30 California sites from 2014 to 2016 have demonstrated that almond trees treated with ReTain consistently displayed increased nut set and yield on the almond varieties tested. On average, the 2014 to 2016 trials on nonpareil-variety almonds increased yield by 185 pounds of nutmeat per acre over the untreated check—a 7 percent increase.

"ReTain is a proven technology with established, similar use patterns for fruit and nut set in California cherries and walnuts," said Tom Caruso, ReTain product manager for Valent. "Now, ReTain offers an innovative, new use for increasing nut set in California almonds to ultimately provide growers with an enhanced crop load."

ReTain can be applied between 10 percent and full bloom; however, the recommended application timing is between 30 percent to 60 percent bloom. ReTain offers an easy-to-use rate of one water-soluble pouch per acre. And, ReTain is best applied via air blast sprayer to maximize the application window.

For more information on ReTain for almonds, visit valent.com/ReTainCA or contact your local Valent sales representative.

About Valent U.S.A. Corporation
Valent U.S.A. Corporation, headquartered in Walnut Creek, Calif., develops and markets products in the United States and Canada that protect agricultural crops, enhance crop yields, improve food quality, beautify the environment and safeguard public health. Valent products include a well-known line of quality herbicide, insecticide, fungicide and plant growth regulator products for agricultural, seed protection and professional use. Valent is a leader in marketing and sales of both traditional chemical products and also biorational products developed by its affiliate, Valent BioSciences Corporation.

For more information about Valent or our full product line, please call 800-6-VALENT (682-5368) or visit valent.com.

ReTain is a registered trademark of Valent BioSciences Corporation.