MBII: Recent study of impact of Venerate and Grandevo on almond tree pests confirms the efficacy of dual treatments

By Ian Gilson, PhD, CFA



Marrone Bio Innovations has released the results of a 2018 study by Blue Diamond Growers on the impact of Venerate® XC and Grandevo® WDG on almond pests.

The addition of Venerate® XC reduced the total nut damage due to navel orangeworm, Amyelois transitella, by an additional two percent. It is estimated that this pest may cause a reduction in crop yield of an estimated $1,700 per acre. This pest has developed a resistance to a number of conventional chemical pesticides.

Other almond pests, such as the peach twig borer and the two-spotted spider mite, sprayed when the trees are flowering (February and March) were controlled by the use of Grandevo® WDG without affecting beneficial insects. Bees are an essential part of pollination and nut formation.

Blue Diamond Growers, founded in 1910, is one of the largest tree nut processing companies in the world. It is a growers cooperative encompassing about 3,000 growers.

Almonds are a California crop. Over the past few years close to a million acres of fruit bearing trees produced about 2,300 million pounds of almonds worth $5.6 billion at current prices.

A 1% improvement in yield is worth $56 million to the growers.

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