CN1207869A

CN1207869A - Medicine for preventing and controlling soft rot of ginger

Info

Publication number: CN1207869A
Application number: CN 97107794
Authority: CN
Inventors: 张真德; 何安平
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-25
Filing date: 1997-11-25
Publication date: 1999-02-17
Anticipated expiration: 2017-11-25
Also published as: CN1070024C

Abstract

In accordance with the mechanism of soft rot, the present invention recompounds the farm chemical with thiophanate methyl and boric acid. Thiophanate methyl has bactericidal effect and boric acid reacts with alcohols in soil in the presence of benzone of thiophanate methyl to liberate oxygen capable of changing the oxygen deficiency state of soil. The said farm chemical can prevent and control soft rot effectively in the whole growth period of ginger.

Description

A kind of medicament of preventing, controlling the ginger soft rot

The invention belongs to a kind of pesticidal preparations, particularly a kind ofly be used to prevent, control the pernicious disease of ginger---the special effect agent of soft rot (also claiming bacterial wilt of ginger).Before being applicable to plantation the ginger kind is sterilized and whole growth phase preventing, controlling soft rot (bacterial wilt of ginger).

The ginger soft rot is a ginger incident pernicious disease in vegetative period.It is big to have harm, and the intermediary and later stages morbidity is just restive in case morbidity is particularly grown.All about 20%, heavy famine year is up to about 50% for general its incidence of disease of time.At present, the medicament that is used for the control of this disease have generally that zineb, thiophanate methyl, ginger plague are peaceful, Shibaoling etc.These medicines are generally all more satisfactory to the control efficiency of ginger early growth period generation soft rot, but very poor to the control efficiency in growth when morbidity intermediary and later stages.Because piece root of ginger and bottom stem are in the middle and later periods is in soil than deep layer, often higher because of the water content of soil, particularly reach reasons such as soil compaction under high temperature, high humidity environment, cause piece root and close with it stem's position anoxic, the generation physiological is rotted and is caused that the concurrency soft rot takes place.Be in the ginger growth intermediary and later stages under high temperature, high humidity and soil compaction environment for this class, because of anoxic causes the soft rot that physiological is rotten and concurrent, above-mentioned simple bactericidal properties agricultural chemicals just is difficult to this take effect.

The objective of the invention is at the ginger soft rot, particularly in the pathogenesis of growth intermediary and later stages, prepare a kind of not only can be at the ginger early growth period, and soft rot prevented, controls equal efficacious agents in the intermediary and later stages of growing.All can prevent effectively, control to reach the soft rot that ginger was taken place in the whole growth phase, and cost is low, efficacy stability, expiration date of drug length is used convenient and can also be to purposes such as plant microelement-supplementings when preventing and treating disease.

Solution of the present invention is the generation at ginger growth intermediary and later stages soft rot, often because high temperature, high humidity and soil compaction cause anoxic to cause the rotten and concurrent soft rot of physiological; And ginger piece root is under anaerobic condition, and particularly causing when rotting in anoxic has alcohols material to produce.Therefore, the present invention is a basic components with conventional sterilization agricultural chemicals thiophanate methyl, adds a certain proportion of boric acid mixed preparing of using as little fertilizer usually and forms.Thiophanate methyl in this medicament belongs to the benzene preparation, after being manured into soil, boric acid wherein reacts with alcohols under the effect of benzene, emit oxygen, not only can improve the anaerobic condition in the soil, also can suppress the breeding (general ginger soft rot mostly is mixed infection, often has 2～3 kinds or more kinds of germ to contaminate, interior in often have anaerobic bacteria to exist) of the part anaerobic bacteria in the soft rot germ; And the thiophanate methyl in the medicament has bactericidal action widely, Bacteria erwinia can be killed.When ginger is fallen ill vegetative period, do not use,, stopped the generation that ginger anoxic physiology rots owing to changed the anaerobic environment of root soil.Bactericidal action thereby also just prevented the generation of concurrency soft rot in addition, thus play prevention effect; When morbidity, use, again owing to the boric acid in the medicament reacts with alcohols in the presence of benzene, discharge oxygen, changed the growing environment of ginger root, kill the soft rot germ by thiophanate methyl simultaneously, both eliminate disease, improved the growing environment of root in soil again, thereby played the effect of curing the disease; Boron in the medicament still can be used as little fertilizer, promotes the ginger growth; Thereby realized goal of the invention.Therefore, the present invention comprises thiophanate methyl, and key is wherein also to comprise boric acid, both proportionings by weight: thiophanate methyl: boric acid=6: 4～be advisable at 8.5: 1.5, mixed preparing forms.In the said ratio, when the thiophanate methyl effective content is 70%, boric acid content is 17% o'clock, its proportioning by weight, thiophanate methyl: boric acid=7.7: 2.3 is for well.

The present invention is because conventional pesticide thiophanate methyl and composite the forming of boric acid of using as little fertilizer are usually adopted in the thinking of breaking the normal procedure.Utilize in the use bactericidal action of thiophanate methyl and participation that boric acid is levied benzene in the thiophanate methyl down and alcohols material react, discharge oxygen, improve the anaerobic condition in the soil, stop ginger and rot and cause that the soft corruption of concurrency is from generation because of anoxic produces physiological.By mark, this double controlling, thus prevent in the phase, control in whole growth the ginger soft rot play beyond thought effect and can be in diseases prevention, provide the micronutrient boron that promotes its growth to plant when curing the disease.Be ginger soft rot grave illness year this year (1997), and the general incidence of disease is about 50%.In control experiment: adopt medicament of the present invention from seed disinfection in the control group A, the whole growth phase is total to dispenser 5 times, and all dispenser preventions behind continuous high temperature, high humidity weather are up to none strain morbidity of results; And the B group has reached at 30% o'clock at the large tracts of land incidence of disease, and employing spraying (diluting 700 times) is carried out simultaneously with filling root (being diluted to 550 times), just controls stretching of morbidity after the week comprehensively, and left and right sides diseased plant just restore normal growth in 15 days.And do not use the general underproduction 30～50% of control group of the present invention.Therefore, that the present invention has is anti-, it is obvious to control ginger soft rot effect, is applicable to that the whole growth phase of ginger uses, and prepare easyly, and cost is low, efficacy stability, and the term of validity is longer, uses to make things convenient for and also can be to characteristics such as plant microelement-supplementings when preventing and treating disease.

Embodiment

The agricultural chemicals that present embodiment adopts effective content 70% is that to prepare 10kg medicament of the present invention be example for 17% boric acid with thiophanate methyl and content: at first take by weighing in the 7.7kg thiophanate methyl adding agitator, taking by weighing 1.15kg boric acid (if crystal then should break into powder) more evenly adds gradually under the situation of opening agitator, ends until stirring, divide bottle to pack, the term of validity can reach 2 years.When present embodiment used: root was irritated each consumption 0.8～1.0kg/ mu dilution and is used for 500～600 times, uses a drug effect and can keep the each consumption 150～200g/ of spray application mu more than 20 days, dilutes 700～750 times of uses.

Claims

1, a kind of medicament of preventing, controlling the ginger soft rot comprises thiophanate methyl, it is characterized in that wherein going back boronic acid containing, both proportionings by weight: thiophanate methyl: boric acid=6: 4～be advisable at 8.5: 1.5, both form at mixed preparing.

By the described medicament of preventing, control the ginger soft rot of claim 1, it is characterized in that in the described proportioning that 2, when the thiophanate methyl effective content is 70%, boric acid content is at 17% o'clock, its proportioning by weight: thiophanate methyl: boric acid=7.7: 2.3 is for well.