JPH02154624A - Method for increasing yield of vegetable - Google Patents

Abstract

PURPOSE:To improve the resistance of vegetables against blights and weather change, prevent the lodging and premature bolting and enable stable increase of the yield of vegetables by treating a seedling of raising period or a seed with a triazole-base plant-growth regulator. CONSTITUTION:A seedling of raising period or a seed of vegetables such as fruit vegetable, leaf and stem vegetables or root vegetables is treated with a solution of a triazole-base plant-growth regulator such as (E)-1-(4- chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)--1-penten-3-ol and the treated seedling or seed is transplanted or sowed to a field. The treatment is carried out usually by applying a solution containing 0.01-200ppm of the active component to the field at a rate of 0.02-50g/a for raising seedling treatment or immersing the seeds in a solution containing 0.01-100ppm of the active component for 1-36hr in the case of seed-treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for increasing vegetable yield. More specifically, the present invention relates to a method for increasing the yield of vegetables by treating seedlings or seeds in the seedling-raising stage with a triazole-based plant growth regulator.

<Conventional technology and issues> In general, temperature and water management are difficult when raising vegetable seedlings.
Seedlings tend to be soft and elongated, and weak elongation during early growth often impairs subsequent growth, weakens resistance to diseases and climate changes (e.g. low temperature, high temperature, high humidity), and further reduces yield due to lodging and early growth. It often leads to

<Means for Solving the Problems> As a result of intensive study by the present inventors on the cultivation of healthy seedlings to increase the yield of vegetables, triazole-based plants were found to grow in seedlings or seeds during the seedling-raising period! I! By treating with a throttling agent, for example, healthy seedlings can be grown without causing soft elongation during early growth, and along with the growth of healthy seedlings, resistance to diseases and weather changes can be improved, and furthermore, lodging and early Sendai can be prevented. It was discovered that this can be prevented and, as a result, it is possible to stably increase the yield of vegetables, leading to the present invention.

Examples of vegetables targeted by the present invention include fruit vegetables such as cucumbers and tomatoes, leaf vegetables such as cabbage and spinach, and root vegetables such as radish and carrots.

In the method of the present invention, the seedling-raising period refers to the period until planting in the main field, and specific methods of seed treatment include:
Examples include soaking, dusting, and spraying before sowing.

As the triazole plant growth regulator used, for example, (snake)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)
-1-penten-3-ol (hereinafter referred to as compound A).

A compound described in JP-A-5625105. ) or a salt thereof, (E)-1-cyclohexyl-4,4-dimethyl-2-(1,2,4-)riazol-1-yl)-1
-Penten-3-ol (hereinafter referred to as compound B, a compound described in JP-A-55-111477) or a salt thereof, 1-(4-chlorophenyl)-4,4-dimethyl-2-(1゜2.4-triazol-1-yl)pentan-3-ol (hereinafter referred to as compound C. JP-A-1982-1983)
Examples include the compound described in Japanese Patent Publication No. 28170, ) or a salt thereof.

These triazole plant growth regulators are usually formulated into emulsions, solutions, wettable powders, suspensions, granules, etc. using liquid carriers, solid carriers, surfactants, and other formulation auxiliaries. It will be done. These preparations usually contain the active ingredient in a weight ratio of 0.04 to 90%.

Examples of liquid carriers that can be used include aromatic hydrocarbons such as xylene and methylnafculene, alcohols such as isopropanol, ethylene glycol, and cellosolve, ketones such as acetone, cyclohexanone, and isophorone, and vegetable oils such as soybean oil and cottonseed oil. Examples include dimethyl sulfoxide, acetonitrile, water, and the like.

Examples of solid carriers include fine powders or granules such as kaolin clay, acpargite clay, bentonite, acid clay, pyrophyllite, talc, diatomaceous earth, calcite, walnut shell powder, urea, ammonium sulfate, and synthetic hydrous silicon oxide. .

Examples of surfactants used for emulsification, dispersion, wetlands, etc. include alkyl sulfate salts, alkyl (aryl)
Anionic surfactants such as sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkylaryl ether phosphate ester salts, polyoxyethylene alkyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene polyoxypropylene block copolymers, Examples include nonionic surfactants such as sorbitan fatty acid ester and polyoxyethylene sorbitan fatty acid ester.

Other formulation adjuvants include lignin sulfonate, alginate, polyvinyl alcohol, gum arabic, CMC (carboxymethyl cellulose L PAP)
acidic isopropyl phosphate) and the like.

The treatment concentration and treatment amount of the triazole plant growth regulator formulated in this way are determined by Plant Growth! j1 type of moderator,
Although it varies depending on the treatment method, treatment time, etc., in the case of seedling-raising treatment, a solution containing 0.01 to 200 ppm of active ingredients is usually applied at a rate of 0.02 to 50 g/a. In addition, in the case of seed treatment, usually 1% of the active ingredient is added to a solution of 0.01 to 1100pp.
Apply by soaking the seeds for ~36 hours or spraying a sufficient amount. Alternatively, the formulation is applied in powder form at 0.01-100%, preferably 0.5-10% per seed type.

<Example> The present invention will be explained in more detail below using formulation examples and test examples.

First, a formulation example will be shown. In these formulation examples, parts represent parts by weight.

Formulation Example 1 Emulsion Xylene is added to 5 parts of emulsion compound A, 10 parts of polyoxyethylene styrylphenyl ether, and 50 parts of cyclohexanone to make a total of 100 parts, and the mixture is stirred and mixed to obtain an emulsion.

Formulation Example 2 Kaolin clay was added to 10 parts of Wettable Powder Compound 8, 5 parts of sodium lauryl sulfate, and 2 parts of a formalin condensate of an aromatic sulfonate to make a total of 100 parts, and the mixture was thoroughly mixed with a juice mixer and then mixed with a jet mill. Wettable powders are obtained by pulverization.

Formulation Example 3 A pulverized product is obtained by mixing 2 parts of white carbon with 10 parts of granule compound C and pulverizing the mixture with a jet mill. 700 g of 50% white carbon diluted powder of sodium dodecylhenzenesulfonate, 7.5 kg of bentonite, and kaolin clay were added to 12 g of this pulverized product, and the total amount was 25 g.
After mixing for 15 minutes using a Nauta mixer, 8.75 kg of water was added and kneaded, followed by granulation using a field-type granulator. Furthermore, granules are obtained by drying in a fluidized bed dryer.

Next, a test example will be shown.

Test Example 1 Cucumbers (variety: Nanshin) were sown in synthetic resin pots filled with artificial soil, and seedlings were raised for 22 days. A 5 and 10 ppm solution of the compound prepared into an emulsion according to Formulation Example 1 and a 50 ppm solution of Compound C were sprayed on the foliage in an amount of 4 ml per plant.

Test Example 2 Cabbage (variety, Gomaki) was sown in a synthetic resin pot filled with artificial soil, and seedlings were raised for 20 days. 10 and 20 ppm solutions of Compound A prepared into emulsions according to Formulation Example 1,
A 1,100 pp solution of Compound C was sprayed on dlll foliage per plant. In addition, a control group was prepared in which a solution containing no active ingredient was sprayed on the leaves. 15 days after spraying, the seeds were planted in a Japanese field.
After cultivation for OO days, the yield was investigated.

In addition, the cultivation in this field is 45 plants per section, two rows, and a row width of 0.6 m.
, with a plant spacing of 0.4 m and a planting density of 416 plants/a, the amount of fertilizer applied was N.
3.5 kg/a, pgos2.5 kg/a, K
xO3, Okg/a.

The results of the yield investigation are shown in Table 2.

In addition, a control plot was prepared by spraying a solution containing no active ingredient on the foliage. Eight days after spraying, the seeds were planted in the main field, cultivated, and the yields in the early, middle, and late stages were investigated.

In addition, cultivation in this field is 1 O strain in 1 section, 2 rows, ridge width 1° 8m.
, with a spacing of 0.5m, the amount of fertilizer applied was N3.5kg/a, and PzOs
It was 2.5 kg/a, KxO3, Okg/a.

The results of the yield investigation are shown in Table 1.

Table 1 Test Example 3 During germination, seeds of spinach (variety, dark green) were immersed in 1.3 and 10 ppmi solutions of Compound A prepared as hydrating powders according to Formulation Example 2 for 12 hours. The seeds were sown in the main field within Nous. Cultivation in a 0-plant field using plots sown with seeds soaked in water that does not contain Compound A as a control plot was 0.5 m per plot, 0.5 m in row width in 3 rows, and the amount of fertilizer applied was N2 kg/ a, plo12kg/a, KzO
It was 2 kg/a.

All the plants were harvested after 26 days, and the bolting rate and growth of non-bolting plants were investigated.

The results are shown in Table 3.

Table 3: Survey on maximum leaves in Table 1 As shown in the table above, more than 70% of the plants in control plot 3 had sentai (rapid elongation of stems with flower buds) and lost their commercial value, but when treated with compound A In test areas 7-9, Sendai was suppressed.

As a result, in control plot 3, both the number of leaves and the fresh type of the non-Sendai strain, which served as a harvest control, were lower than in test plots 7-9.

Test Example 4 1 and 3 ppm solutions of the compound prepared as a wettable powder according to Formulation Example 2 and Compound B (Effect of the invention) Triazole-based plant growth ill! By the method of the present invention using an ff agent, the yield of vegetables can be increased.

Seeds of Japanese radish (variety, disease-resistant total fat) were soaked in the 25PPm solution for 24 hours, washed with water, and sown in the main field. Seeds soaked in water not containing compound A or B were i1! The seeded plot was used as a control plot. Cultivation in this field is with a ridge width of 1.3m.
, 2 rows sown with a plant spacing of 0.25 m and a row spacing of 0.4 m, 1 section 5,
2nf, 4 continuous system, fertilizer application amount: N 2.4kg/a, P
2O51,6kg/a, K2O1,2kg/a
Met.

After 85 days, the entire forest was harvested and a growth survey was conducted. The results are shown in Table 4.

Table 4

Claims (1)

[Claims] A method for increasing yield of vegetables, which comprises treating seedlings or seeds during the seedling-raising period with a triazole-based plant growth regulator, and transplanting or sowing the treated seedlings or seeds into a main field.