Pesticidal/ovicidal composition and pesticidal/ovicidal method

Abstract

A pesticidal / ovicidal composition comprising (a) 50-99.9 parts by mass of a triglyceride containing not less than 50% of oleic acid as a fatty acid component; (b) 0.1-20 parts by mass of a nonionic surface active agent; and (c) 0-30 parts by mass of a glycerin derivative. The composition according to the invention has not only a pesticidal activity but also an ovicidal activity on crop pests, and provides a safe and high pesticidal / ovicidal effect.

Description

TECHNICAL FIELD[0001]The present invention relates to a pesticidal / ovicidal composition and a pesticidal / ovicidal method.BACKGROUND ART[0002]Various agents have been known as a fungicide and a triglyceride-based pesticidal composition against crop pests such as mites and aphids. For example, Patent Document 1 discloses a fungicidal composition comprising a phospholipid and an edible oil. Patent Documents 2 to 4 disclose a miticide comprising animal and vegetable oils and a surfactant. These Documents, however, do not disclose that the above compositions work on mite eggs.[0003]Patent Document 5 discloses a triglyceride composed of unsaturated fatty acid, which shows high pesticidal and ovicidal effects by combining a coconut oil, a palm kernel oil, triglyceride composed of C12 and C14 fatty acids (mixing ratio: from 4:1 to 1:4), triglyceride composed of C12 and C18-1 fatty acids (mixing ratio: from 4:1 to 1:4), triglyceride composed of C12, C14 and C18-1 fatty acids (mixing ratio: 1...

AI Technical Summary

Benefits of technology

[0026]Since the pesticidal / ovicidal composition according to the invention employs triglyceride, which is used in food, as a main ingredient, it has no stress on human bodies and natural environments and no risk of drug resistance induction, and shows pesticidal and ovicidal effects even on crop pests which already have acquired resistances to other drugs. In addition, the composition according to the invention displays sufficient pesticidal and ovicidal effects even at lower concentrations.BEST MODES FOR CARRYING OUT THE INVENTION

[0027]The triglyceride component (a) used for the composition of the invention contains oleic acid as a constituent fatty acid in an amount not less than 50%, preferably, not less than 55%, and more preferably, not less than 60% by mass. Examples of such triglyceride include olive oil (containing oleic acid in an amount of 60-80% by mass), extra virgin olive oil (60-80% by mass), camellia oil (about 85% by mass), almond oil (60-70% by mass), avocado oil (64-94% by mass), tea seed oil (about 88% by mass), safflower oil (high oleic acid variety) (70-80% by mass), sunflower oil (high oleic acid variety) (75-80% by mass), and oils from other high oleic acid plants. Among these, sunflower oil (high oleic acid variety), safflower oil (high oleic acid variety) and extra virgin olive oil are preferred.

[0028]The composition according to the invention contains component (a) in an amount of 50-99.9 parts by mass, preferably, 70-99.9 parts by mass, and more preferably, 80-99.9 parts by mass, relative to 100 parts by mass of the total amount of components (a), (b) and (c). Triglyceride content of 50-99.9 parts by mass is preferred for the composition of the invention, because triglyceride content in such range tends to exert pesticidal / ovicidal effect.

[0029]For the composition of the invention, an adjuvant containing component (b) or components (b) and (c) is used.

[0030]Adjuvant component (b) is a nonionic surface active agent, and preferably at least one selected from the group consisting of fatty acid esters and amino acid derivatives.

[0031]Examples of the fatty acid esters include polyoxyethylene fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters and polyoxyethylene glyceryl ether fatty acid esters.

Problems solved by technology

These Documents, however, do not disclose that the above compositions work on mite eggs.

However, since glycerides other than the coconut oil and the palm kernel oil are synthetically produced, they require high production costs and are of little practical use.

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