Page 48 - Grapevine JanFeb 2021_REV

Around The Vineyard

methods. Our products also have favorable safety with biologicals, and in many cases, preventa-
profiles, with four-hour re-entry intervals and zero- tive treatments should be made when conditions
day pre-harvest intervals. They are reduced risk, become conducive to pest development. Although
tolerance exempt, and all except Haven, our abiotic biologicals tend to kill pests more slowly, the dam-
stress manager, are OMRI certified.” age being done by the pest is stopped at the time
of application, even if complete mortality takes
Biopesticides like those offered by Marrone Bio several days. Necessary practices connected with
Innovations are split into two different categories, the use of biologicals involve careful scouting for
microbials and plant extracts. pests, thorough recordkeeping, and the utilization
of pest prediction models to lead the vineyard
“Some of our most commonly used products are management’s decision making. Because treatment
Regalia for Powdery Mildew and Venerate XC for thresholds with biologicals are lower, the decision
mealybugs,” said O’Neal. “But we do offer a prod- to treat must be made early in the pest population
uct portfolio to address insect pests, diseases and cycle. The methods aren’t any more time consum-
abiotic stressors of grape, including two bio fun- ing than performing those of conventional materi-
gicides, Regalia and Stargus, two bioinsecticides, als, but they are likely to occur at earlier junctures.
Grandevo and Venerate, and a heat and sun stress Retreatment intervals with many of their products
protectant, Haven.” occurs within one to two week intervals.

O’Neal said that biologicals have excellent efficacy “All in all, the future of organic farming is bright,”
when used in the manner they are intended, typ- said O’Neal. “It’s a product of consumer prefer-
ically meaning with earlier application compared ence, desire for sustainability, increasing regulato-
to conventional methods. Specifically, treatment ry agency pressure on the synthetic chemistries,
thresholds should be much lower when working and the boom of technologies that are available

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