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Umen'shenie kolichestva obrabotok jablonevogo sada pri primenenii ingibitorov sinteza khitina- alsistin i dimilin

100%

Velcheva N.

Zeszyty Problemowe Postępów Nauk Rolniczych

1989

tom 368

During 1981-1985 studies were carried out on the effect of plant regulators, dimilin and alsistin, on the codling moth and small ermine moth. It was found that the most susceptible to these chemicals are 1-day-old eggs and butterflies. A change of spraying periods and a high resistance of chemicals to the influence of ecological factors make possible the protection of yields and leaf matter of apple orchards from injuries and permit to maintain the population size below the economio threshold of harmfulness (applying two-three sprays during the season). The economical effect of that is 6-10 lev/are.

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1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Velcheva N.

1 1989

Wyniki wyszukiwania

Umen'shenie kolichestva obrabotok jablonevogo sada pri primenenii ingibitorov sinteza khitina- alsistin i dimilin