CN1078044C

CN1078044C - Composition for preventing and treating banana bunchy top and brindle-heartrot

Info

Publication number: CN1078044C
Application number: CN99110088A
Authority: CN
Inventors: 李夷波; 李航
Original assignee: INST OF PHYTOPATHOLOGY MENGZI ECONOMICAL DEVELOPMENT REGION
Current assignee: INST OF PHYTOPATHOLOGY MENGZI ECONOMICAL DEVELOPMENT REGION
Priority date: 1999-07-05
Filing date: 1999-07-05
Publication date: 2002-01-23
Anticipated expiration: 2019-07-05
Also published as: CN1250598A

Abstract

The present invention relates to a composition used for preventing and controlling banana bunchy top and flower leaf heart rot. The composition contains a pentabasic single heterocycle compound such as 3-hydroxy-5-methyl isoxazole which can promote the conversion of phenol and quinone and influence the activity of plant enzyme, chelating microelements such as Fe, Mn , Zn, Cu, B, Ca , Mo, etc., and elements such as nitrogen, phosphorus and potassium which can promote plant growth. The composition is prepared into an aqueous agent which is injected in an infected plant body for militating. The prevent invention has the advantage of high drug effect; when the composition is applied before pathogenesis, the prevention effective rate is 100%, and when the composition is applied after pathogenesis, the cure rate of moderate infected plants and mild infected plants is also 100%; drug effect is long, and the composition only needs injecting cauloid on each plant within the time from a seedling stage to bud gestation for 2 to 4 times; use cost is low, and each plant only needs 10 to 30 ml of the composition each time; the toxicity is less, no residue exists, the 3-hydroxy-5-methyl isoxazole is degraded into carbon dioxide and water in the plant body, and the microelements are converted into the nutrient components of plants.

Description

A kind of composition that is used to prevent and treat banana bunchy top disease and floral leaf heart rot

The present invention is a kind of composition that is used to prevent and treat banana bunchy top disease and floral leaf heart rot.

As everyone knows, banana is one of kind of volume of trade maximum in the international fruit trade, be considered as the important commodity of earning foreign exchange by many countries, and be known as the food that is particularly useful for health by developed country, in some torrid zones or the country, subtropics, banana occupies crucial status in national economy.Yet diseases such as the bunchy top of banana, floral leaf heart rot usually can make the dead total crop failure of banana large tracts of land, cause heavy blow for the economy of country.

Banana bunchy top disease claims curly top again, claims to grip the neck disease in Fiji, claims wasting disease at TaiWan, China, and its English name is Banana Bunchy Top Virus, is called for short BBTV, is the main diseases virus disease of banana, bajiao banana and abaca.This disease is threatening the production of world's banana.In the Asia, a lot of countries and regions in Australia and Africa, banana bunchy top disease all causes the tremendous economic loss every year, becomes the principal element of restriction banana production in the world wide.The eighties, the southern banana of China carries out implant mass, but owing to introduce seedling from the lesion, this disease in Guangdong, ground such as Guangxi, Yunnan are very popular, and cause very big loss.Guangxi banana planting area reaches 1.73 ten thousand hm ², the bunchy top onset area reaches 6867.67hm ², account for more than 30%; Guangdong Dongguan City banana area 6666.67hm ², the bunchy top incidence of disease is generally at 20-50%, and heavy person is up to 80%, and many banana peasants are forced to replant paddy rice.State, Red River, banana production district, Yunnan statistics in 1994, Quanzhou 8000hm ²Banana, the about 4000hm of morbidity more than 50% ², about 2666.67hm of 20% ², 10% following person 1333.33hm ², output reduces sharply, and many banana peasants are forced to replant bajiao banana or allow its uncultivated a few Nian Houzai kinds (see " banana bunchy top disease research and Progress on prevention and treatment ",＜Yunnan agricultural science and technology〉the 5th phase in 1997).

The banana floral leaf heart rot is another kind of virus disease, and it is even more serious than bunchy top to cause harm, the once popular in South America mistake of the '20s in this century, and China 1974 finds in Guangdong, now spread to the loss that causes on ground such as Yunnan, Guangxi and enlarged.

Above-mentioned two kinds of diseases of banana all can take place in the whole process of banana growth, in case morbidity, plant is just withered gradually and dead, result's plant, and fruit can't be ripe, but become withered any of several broadleaf plants.Causing harm of these two kinds of diseases causes various countries agricultural experts' attention and dropped into lot of manpower and material resources research that particularly Australian research is in rank first, but even to this day, does not also find effectively preventing means and medicine for a long time.How to prevent and treat these the two kinds diseases that are called the banana cancer by the masses and remain world-famous puzzle so far.As makeshift, the many countries that comprise Australia can only in time dig the diseased plant of morbidity and ruin, in order to avoid infect, strict besides the implementation quarantined, limit the disease seedling and propagate, come disease controlling (seeing above-mentioned document), certainly this means of prevention of ruining the strain formula with this, its effect is low, and its loss is big to be conspicuous.

Purpose of the present invention is exactly to propose a kind of medicine that can effectively prevent and cure banana bunchy top disease and floral leaf centre rot, to fill up or to overcome the blank or not enough of prior art.

This composition that is used to prevent and treat banana bunchy top disease and floral leaf heart rot proposed by the invention, its principal character are that it contains a kind of five yuan of single heterocycle compounds and trace element.

The n-p-k element that promotes plant growing can be arranged in the composition.

Five yuan of single heterocycle compounds are preferably the different azoles of 3-hydroxy-5-methyl base, promptly dislike mould spirit, and its chemical molecular structural formula is:

Trace element is selected from one or more among Fe, Mn, Zn, Cu, B, Ca, the Mo, can be their mineral salt or chelate and the chelate that is preferably EDTA.

The different azoles of 3-hydroxy-5-methyl base, promptly disliking the concentration of mould spirit in composition is 200-4000PPM.

Fe, Mn, Zn, Cu, B, Ca, Mo are in composition, and single kind concentration of element is 70-1000PPM.

The nitrogen phosphorus potassium that adds in the composition is fertilizer commonly used such as urea, potassium dihydrogen phosphate.

This composition is an aqua, because banana plant is tall and big, blade face wax bed thickness is difficult for being stained with and absorbing by foliage spray, and should adopts the dispenser of false stem injection, its advantage is that validity is higher, effective drug duration is longer, and application times is few, can reduce cost, be not subjected to weather effect, the best supporting dispenser method when this method is used as this composition.

After deliberation, the different azoles of 3-hydroxy-5-methyl base, promptly disliking mould spirit has promotion phenol-quinone conversion, influences the phytoenzyme activity, thereby improves the effect of plant disease-resistant ability.

Advantage of the present invention is:

1, the drug effect height is used at premorbid, and preventing efficient is 100%; Use after the morbidity, the cure rate of mild or moderate diseased plant also is 100%;

2, drug effect is long, every strain only need seedling stage the false stem of injection to the pregnant flower bud get final product each interval 7-20 days for 2-4 times;

3, use cost is low, the each 10-30ml that only needs of every strain;

4, toxicity is little, and noresidue is disliked mould spirit and can be degraded to carbonic acid gas and water in plant corpus, and is micro-then become the nutrient component of plant.

Further describe the present invention with example below.

Example one

Jin Pingxian Gold Water River township, Yunnan Man Peng receives nest banana planting family Chen, plants two mu in banana in spring in 1998, and kind is Wei Musi, and field planting latter two month, the floral leaf heart rot incidence of disease is up to 80%, and bunchy top also has fragmentary generation.Begin September with this composition injection, each every strain injection 20ml, logotype 2 times, the part grave illness involves in a criminal case with 3-4 times, and in February, 1999 investigation, the diseased plant rate of floral leaf heart rot and bunchy top reduces to zero.The banana growth is good especially, and per mu yield is compared with the average annual output about local 1000Kg up to 4941Kg when gathering in the crops by the end of March, has turned over more than two kinds, causes sensation in the locality.

Proportioning in this example is as follows:

The different azoles of 3-hydroxy-5-methyl base is promptly disliked mould clever 400PPM;

Nitrogen-12%; Phosphorus-8%; Potassium-16%;

Ca 1500PPM (concentration of element, down together); Fe1000PPM;

Mn 500PPM； Zn 200PPM；

Cu 100PPM； B 70PPM；

Surplus is a water.

Example two

The land-reclaimable farm of river mouth, Yunnan leech fort, banana planting area one over thousands of mu all had in various degree bunchy top and floral leaf heart rot to cause harm in the past in 96 years every year, the incidence of disease is generally at 30-50%, when serious up to more than 80%, the not enough 800Kg of every mu of per unit area yield of banana, this composition of continuous administration was prevented and treated in 97,98 two years, the same example of usage and dosage, do not find diseased plant after using again, due to illness none strain lacks the pool during to results, and every mu of per unit area yield of banana is all more than 2500Kg, the banana stature is very large, and is full.Through analytical test to banana tree bar and fruit, do not find any 3-hydroxy-5-methyl-isoxazole, promptly dislike the residue of mould spirit.

Claims

1, a kind of composition that is used to prevent and treat banana bunchy top disease and floral leaf heart rot, its principal character is that it contains a kind of to several in 3-hydroxy-5-methyl-isoxazole and Fe, Mn, Zn, Cu, B, Ca, the Mo trace element.

2, by the composition of described control banana bunchy top disease of claim 1 and floral leaf heart rot, it is characterized in that the n-p-k element that promotes plant growing can be arranged in the composition.

3, the composition by described control banana bunchy top disease of claim 1 and floral leaf heart rot is characterized in that trace element can be their mineral salt or chelate and the chelate that is preferably EDTA.

4, the composition by described control banana bunchy top disease of claim 1 and floral leaf heart rot is characterized in that the concentration of 3-hydroxy-5-methyl-isoxazole in composition is 200-4000PPM.

5, the composition by claim 1 or 4 described control banana bunchy top diseases and floral leaf heart rot is characterized in that Fe, Mn, Zn, Cu, B, Ca, Mo in composition, and single kind concentration of element is 70-1000PPM.

6, the composition by wanting sharp requirement 1 or 2 described control banana bunchy top diseases and floral leaf heart rot is characterized in that the nitrogen phosphorus potassium that adds in the composition is fertilizer commonly used such as urea, potassium dihydrogen phosphate.

7, a kind of using method of preventing and treating banana bunchy top disease and floral leaf heart rot composition is characterized in that composition injects in the banana plant body with injection system.