Ointment-like preparation comprising allyl isothiocyanate for th

Details Ointment-like preparation comprising allyl isothiocyanate for th Ointment-like preparation comprising allyl isothiocyanate for th

1995-06-23

1998-05-26

Clardy, S. Mark

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Ester doai

514515, 514690, 47 11, A01N 2528, A01N 3506, A01N 4746

Patent

active

057565422

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

This application has been filed under 35 USC 371 from International Application PCT/JP94/01793, filed Oct. 26, 1994.
1. Field of the Invention
This invention relates to an ointment-like preparation for protecting a tree such as an apple or a pear tree by applying it to the tree to prevent pathogenic microbes such as Valsa ceratosperma from invading the tree and expanding the colonies settled there to eventually destroy it through wilting. It also relates to an improved method of protecting a tree.
Additionally, the present invention relates to an ointment-like preparation for accelerating the growth of a grafted tree or of shoots of the root of a tree that has been cut midway for transplantation.
2. Description of the Related Art
Orchard farming on apples and other fruits is a major industry in northern regions of Japan including Hokkaido, Aomori, Akita, Iwate and Nagano. While bactericides and pesticides are used at a high rate on orchard trees because such trees are susceptible to diseases by microbes and insects, they can give rise to serious environmental problems including polluted soil and water. These problems are now found everywhere in the world. The incidence of necrosis due to microbes and insects in apple orchards is particularly high and practically all the apple orchards in Japan are currently suffering from it. Plant necrosis include dieback that gives rise to pale brown spots on the exposed areas of trimmed branches and on peduncles and fresh twigs of an affected tree and blight that produces diseased spots on the trunk and major branches of a suffering tree that become wet and dark in early spring. They are both caused by pathogenic microbes.
Therefore, efforts have been made for the prevention of plant necrosis.
Traditional and conventional techniques for protecting apple trees and other orchard trees against necrosis include the following. affected by blight including the arease is totally covered by mud to a thickness of 3 to 5 cm and then by a sheet of vinyl or polyethylene to prevent the wet mud from drying and then left under this covered condition for about a year. blight is removed by cutting and an ointment-like medicament such as TOPZIN M paste or BEFRAN is applied to the exposed area including the surrounding areas for a plurality of times.
However, the doromaki method involves cumbersome operations of applying mud and covering the applied area with a sheet of vinyl or polyethylene and hence is time consuming.
While application of a medicament is a relatively simple operation by itself, it should be repeated for a number of times until the harvest and therefore, if the medicament is diluted, it can eventually contaminate soil and water in the surroundings to the detriment of the environment that might have been already polluted to a certain extent by a variety of different chemicals used for raising orchard trees.
What is worse, known medicaments that have been proposed to date for this method are not particularly effective for the protection of orchard trees.
While grafting may be an effective way for the prevention of plant necrosis, it requires a rigorous selection of finding a matching scion in order to make it genetically viable and therefore it is not a widely accepted practice.
Another effective way for the prevention of plant necrosis may be transplanting. However, for transplanting a tree, considerable part of the root hairs are inevitably cut to make the tree less active in sucking water from the soil.
In view of these and other problems in the conventional techniques in this field of technology, it is therefore a first object of the invention to provide an ointment-like preparation that can be used easily on a tree and effectively vitalize it until it actively reproduces the bark and the root if applied to it only for a limited number of times. A second object of the invention is to provide a method of protecting a tree against disease.


SUMMARY OF THE INVENTION

According to an aspect of the invention, the above first object is achieved

REFERENCES:
patent: 4228124 (1980-10-01), Kashihara et al.
patent: 4659739 (1987-04-01), Yoshioka et al.
Farm Chemicals Handbook p. C68. 1987.

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