CN1208558A - Method for preventing and treating disease of crops by using peroxyacetic acid - Google Patents

Abstract

By using peroxy-acetic acid to prevent and cure vegetable diseases including cucumber, egg-plant, tomato, hot pepper, water melon, sweet melon, etc. and crop disease including paddy rice, such as withered disease, verticillium wilt, leaf rust, leaf spot, etc; possesses such advantages as good in preventing effect, high in safety, no public hazard etc. The decomposition products of peroxy-acetic acid are acetic acid, water and oxygen, so that it not only possesses strong disinfecting action, but also is an ideal acidating agent.

Description

Prevent and treat the method for crop pest with Peracetic acid

The invention belongs to agriculture field, relate to and use Peracetic acid to prevent and treat the method for crop pest.

Peracetic acid (PAA) claim peracetic acid, molecular formula C again ₂H ₄O ₃, molecular weight 76.052.Normal temperature is down colourless transparent liquid, excitant tart flavour, volatile, water soluble and ethanol is arranged, 110 ℃ of boiling points, proportion 1.226.

Peracetic acid is a kind of strong oxidizer, to the equal stronger killing action of tool of various fungies, bacterium and virus, is the quick-acting chemical sterilization disinfectant of a kind of high-efficiency broad spectrum.At present, Peracetic acid has been widely used in health care, public environment, animal and veterinary, agricultural byproducts sterilization and aspects such as edible mashroom cultivating and cultivation.

Crop pest particularly crop soil passes root disease, it is a difficult problem that perplexs plant pathology educational circles for many years always, particularly in recent years along with the continuous expansion of high benefit crop genetics areas such as eggplant, cucumber, tomato, watermelon, muskmelon, the crop rotation difficulty, soil passes root pathogens and accumulates year by year, the susceptible shortage effective agent of crop varieties causes various crop fusarium wilt, verticillium wilt seriously to take place in addition, and loss greatly.Therefore researching and solving continuous cropping, screening economical and effective, the safe and reliable soil disinfectant of preventing and treating crop pest, is the emphasis problem of high-efficiency agriculture development, also is the problem that presses for solution on producing.Reporting at present drawback such as exist all that cost is higher, poor stability, preventive effect are undesirable from the research of domestic and international this respect, for example: " Celfume " that Iraq produces be domestic also use, but cost per mu up to 1000 yuan about; Homemade " dazomet " cost per mu is also about 300 yuan, and application conditions is strict; " continuous cropping agent " of Chu Shouing in the market, its effect and residue problem are still waiting to check and verify.More than all factors make it to be difficult to obtain large scale application.

The purpose of this invention is to provide a kind of above-mentioned defective that overcomes, prevent and treat the method for crop pest with the Peracetic acid of economic actual effect.

It is 0.10～0.03% peracetic acid soln that the present invention adopts effective content, handles in crop seed, vegetative period, and method is as follows:

[a] root-pouring method: after the crop field planting, every strain is executed and is irritated the as above peracetic acid soln 150～500ml of concentration;

[b] method for soaking seed: the usefulness as above peracetic acid soln of concentration was soaked seed 8～12 hours;

[c] foliage-spray method: the peracetic acid soln of all available as above concentration of whole growth phase sprays after the general crop field planting.Paddy rice needs to spray seedling stage at a pin one leaf;

[d] fumigating system:, use the as above Peracetic acid 2～10ml/m of concentration at protection ground crop growth period ³

[e] soil treatment method: before crop seedling, field planting, use the as above Peracetic acid processing soil of concentration, sowing amount is advisable with 500～750kg/ mu.

Method of the present invention has been widened the range of application of Peracetic acid.Peracetic acid also has desirable acid adjustment effect, and activated state oxygen can be provided except that the sterilizing effect with high-efficiency broad spectrum, satisfies the needs that crop root is breathed, and strengthens the crop disease-resistant ability.Because the catabolite of Peracetic acid is acetic acid, water and oxygen, chronic administration can not cause the residual and contaminated environment of medicament.This method can solve disease that vegetables cause because of continuous cropping in producing and plant because of changing places and the waste of talent's thing that grafting is brought; protection ground produces cost per mu about 50 yuan; compare with the existing disinfectant that uses and to reduce cost 6～20 times; alleviated peasant's burden greatly, economic benefit is very considerable.This method is simple and convenient, preventive effect good, safe, nuisanceless; be widely used in the raise crop on open country, protection ground, fusarium wilt, verticillium wilt, leaf mold, bacterial wilt, damping off and the damping off etc. of preventing and treating crops such as eggplant, cucumber, tomato, capsicum, watermelon, muskmelon are had produce effects.

Embodiment: (Peracetic acid of following employing 30%)

1, root-pouring method: with the control eggplant verticillium wilt is example.Verticillium wilt is a topmost disease during eggplant is produced, and endangers very serious, maximum with protection common pratia fruit verticillium wilt morbidity loss especially.The method of control is that 500 times of Peracetic acid 250ml of filling are executed in every strain after the eggplant field planting, and the result is as follows:

Processing method	Total strain number	The diseased plant number	The incidence of disease (%)	Anti-efficient (%)
					The root-pouring method check plot	3130 ?504	?20 ?35	?0.64 ?6.94	?90.78 ?-

2, method for soaking seed: rice paddy seed carried out disinfection (general medicament need soak 12～72 hours) with 500 times of liquid seed soaking in 12 hours, and the disease of paddy rice bacterial wilt, damping off is had obvious preventive effect.

3, foliage-spray method: the leaf mold with the control tomato is an example, does not still have the specific drug control to endangering serious tomato leaf mold at present.Spray field tomato leaf mold plant with 500 times of liquid of Peracetic acid, preventive effect can reach 55.29%, treats that Peracetic acid has desirable emulsifier coupling, improves its plate-out ability, and preventive effect will improve a lot.

Need grasp to carry out in the seedling stage of a pin one leaf to spraying of paddy rice, the result shows has remarkable preventive effect to control paddy rice bacterial wilt, damping off.

4, fumigating system: can empty canopy fumigation before the crop field planting in booth, half mu of ground with 30% Peracetic acid 1kg to water 600kg (i.e. 600 times of liquid), soil and space disinfection are carried out in the bold and vigorous canopy soil surface of watering, after this canopy field planting muskmelon, fusarium wilt does not promptly take place, again leaf diseases such as leaf is withered, downy mildew do not take place.

Experiment shows with 500 times of liquid of 30% Peracetic acid and 9ml/m ³The stifling processing all reaches 100% to tomato leaf mold and gray mold bacteriostasis rate, and the cucumber downy mildew bacteriostasis rate is reached 92.6%.

5, soil treatment method: preventing and treating fusarium wilt with second crop soil plantation watermelon is example, before the watermelon field planting, uses 500 times of liquid to handle soil, 500 jin/mu of sowing amounts.Four leaf after dates are irritated root once again, and root 250ml is irritated in 500 times of every strains of liquid, and the result is as follows:

Processing method	Total strain number	Morbidity strain number	The incidence of disease (%)	Anti-efficient (%)
					Soil treatment adds irritates the root check plot	1000 ?400	?95 219	?9.50 54.75	82.65 ?-

The soil treatment method also comprises disinfecting of nutrition soil and seedbed soil.

Large tracts of land field diseases prevention demonstration proof; Peracetic acid promptly can be used for irritating root after soil disinfection, seedbed soil sterilization, nutrition soil disinfection, the field planting; can be used for the stifling sterilization in the protection space, ground and the face of land again, crops such as the fusarium wilt of effectively preventing watermelon, muskmelon, eggplant verticillium wilt and fusarium wilt soil passes root disease.The control demonstration area spreads all over most of area, Liaoning, and 120,000 mu of accumulation Demonstration Application areas obtain 1,200 ten thousand yuan of economic benefits.

Claims (1)

1, preventing and treating the method for crop pest with Peracetic acid, is to be 0.10～0.03% peracetic acid soln with effective content, handles in crop seed, vegetative period, and method is as follows:

[a] root-pouring method: after the crop field planting, every strain is executed and is irritated the as above peracetic acid soln 150～500ml of concentration;

[b] method for soaking seed: use as above casual the kind 8～12 hours of peracetic acid soln of concentration;

[c] foliage-spray method: the peracetic acid soln of all available as above concentration of whole growth phase sprays after the general crop field planting.Paddy rice needs to spray seedling stage at a pin one leaf;

[d] fumigating system: at protection ground crop growth period, using as above, the Peracetic acid amount of concentration is 2～10ml/m ³

[e] soil treatment method: before crop seedling, field planting, use the as above Peracetic acid processing soil of concentration, sowing amount is advisable with 500～1000kg/ mu.