JPS5855403A - Soil disease controller for agricultural and horticultural purpose - Google Patents

Abstract

PURPOSE:The titled controller that contains a combination of o-trifluoromethyl- m'-isopropoxybenzoic acid anilide and 4-methylsulfonyloxyphenyl-N-methylthiol carbamate, thus showing increased effect controlling soil diseases. CONSTITUTION:The titled controller contains, as active ingredients (A) o-trifluoromethyl-m'-isopropoxybenzoic acid anilide and (B) 4-methylsulfonyloxyphenyl-N-methylthiol carbamate or (C) N-(1-n-butoxy-2,2,2-trichloroethyl)-2-hydroxybenzamide. The resultant composition develops higher controlling effects against soil diseases such as dampfing-off of rice plant than in case of their single use, especially, the combination of A and B shows synergic effect against snow mold caused by Fusarium and that of A and C against radish disease caused by Aphanomyces.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to o-trifluoromethyl-M-isobroboxybenzoanilide (hereinafter referred to as compound A) and 4-
Methylsulfonyloxy7enyl-N-methylthiol carbamate (hereinafter referred to as compound B) also contains N-(
1-n-butoxy-2,2,2-1lichloroethyl)-
2-hydroxybenzamide (hereinafter referred to as compound 0)
The invention relates to a soil disease control agent for agriculture and horticulture, which is characterized by containing as an active ingredient the compound vyJ
A is a known compound described in JP-A-53-9739, and is mainly effective against rice sheath blight.

Compound B and compound vJC are each JP-A-53-47
It is a known compound described in No. 527 and JP-A-54-39040, and has activity as a soil disease control agent.

As a result of research on soil disease control agents, the present inventors have recently discovered the following: seed fungus damping-off, vegetable fungus damping-off, cucumber damping-off, eggplant half-wilt, strawberry bud blight, and strawberry root rot. , radish crack browning, wheat snow rot, turf snow rot, brown patch, spring baldness, and other soil diseases. It was discovered that the control effect was significantly higher than that of each agent alone.

Among these epitonic diseases, the control agent containing Compound A and Compound B as active ingredients is effective against snow rot of wheat and grass, especially red snow rot caused by Fusarium fungi. It has a synergistic effect compared to the effect of each single agent.

Furthermore, the control agent containing Compound A and Compound C as active ingredients is more effective than each single agent against radish crack browning disease, especially the disease caused by Aphenomyces. Produces a synergistic effect.

To produce a soil disease control agent containing an effective amount of Compound A, Compound B, or Compound 0, both components are mixed with a carrier (diluent) according to a conventional method for agricultural chemical formulations, and if necessary, the desired amount is added. Auxiliary agents such as surfactants, fractionating agents, fixing agents, etc. are added to form a dosage form convenient for use, such as powders, etc.
It can be prepared into emulsions, flowables, tablets, wettable powders, microgranules, granules, etc.

Is the present invention a combination of compound 4IJ and people? This is based on the fact that the combined use of IJ B or Compound 10 has an excellent effect on controlling soil diseases. Embodiments in which both are used in combination also belong to the scope of the present invention.

The blending ratio of compound A and compound B or compound 0 is
Although the ratio can be adjusted according to necessity, it is convenient to select the ratio as appropriate from the range of 6:l to 1:10.

The proportion of the active ingredient compound in the preparation is usually 0.5 to +X (-1) in the case of powders or granules, and 10 to 50% (modified IT) in the case of emulsions or wettable powders. It is.

The present invention includes embodiments in which it is applied prophylactically or therapeutically to the ground of crops to be protected, either directly or through the soil.

The amount of the pest control agent of the present invention to be used varies depending on various factors such as the degree of damage, tendency of occurrence, weather, environmental conditions, dosage form, etc. For example, when the final product is used in a liquid form, such as an emulsion or a wettable powder, the final product of the active ingredient is generally 0.01% (
(Overlapping) From now on, you can make # as shown in (G).

When used directly as a powder or granule, 50 g or more of the active ingredient may be sprayed per 10 are.

It is also possible to expand the scope of application of the pesticidal agent of the present invention by blending it with other herbicides, insecticides, soil disease control agents, fungicides, fertilizers, etc.

Next, some examples will be listed, but the present invention is not limited to these examples.

Practical example 1 Compound A 1 part Compound B (
Compound 0) 0.5 part white carbon
1 part PAPL isopropyl acid phos7ate: manufactured by Nippon Kagaku ■ 0.3 parts Clay 97.2 parts are uniformly mixed and ground to make a powder Example 2 Compound A 241% Ii Compound B (or incarnation 0) 6 parts xylene
55 parts polyoxyethylene alkyl allyl ether 15 parts were uniformly mixed and dissolved to prepare an emulsion.

Practical example 3 Compound *A 22 parts Compound B
(4L<Ha compound vJO) 8 parts white carbon 20 parts sodium dodecylbenzenesulfonate 5 parts clay
45$ was uniformly mixed and ground to make a wettable powder.

Example 4 Compound Toneri 8 parts Compound B (or Compound 0) 7 parts Polyvinyl alcohol
Part 2 White Carbon 5
Part Sodium Dodecylbenzenesulfonate 0.
2 parts 77.8 parts of clay are mixed and pulverized, 18 parts of water is added and kneaded, and the mixture is granulated and dried using an extrusion granulator to form granules.

Next, test examples of the present invention will be shown.

Test Example 1 Wheat snow rot control test Red snow rot [Pathogen Fusarium
A predetermined amount of the entire wettable powder of the present invention, which was formulated in the same manner as in Example 3, was sprayed using a Kada-type rust sprayer on a field of wheat (variety: hollywheat) where a large number of wheat (variety: wheat) were found to have a high incidence of .

In addition, #I per ward was set to 15 m2.

After the snow melted, the disease index was investigated, and the disease severity was calculated using the following formula to determine the control value. Half of the plants withered and died 0: Healthy demand and growth The test results are shown in Table 1.

Table 1 Test Example 2 Radish crack browning disease control test Rhizoctonia
solani (Rh1zoctonia 5olani) r'
j 77 Anomyces raphani (Apha-
A spore-suspending fRJ solution of Japanese radish (Japanese radish) was irrigated to prepare a diseased surface, and a predetermined amount of the powder of the present invention, which had not been formulated in the same manner as in Example 1, was thoroughly mixed therein.
Seeds of cultivar = 1L Mino Waseda No. 1) were sown.

The 116 dan in the 1st ward is 18m2.

Four days after sowing, the radish plants were pulled out, and the disease severity was investigated.The disease severity was determined using the following formula, and the control value was determined. ~3% shares ns:
, /3% or more Q Number of strains N: Number of investigated strains The test results are shown in Table 2.

Table 2

Claims (1)

[Claims] 0-Trifluoromethyl-m'-isopropoxybenzoic acid anilide and 4-methylsulfonyloxyphenyl-N
-methylthiol carbamate or N-(1-n-
1. A soil disease control agent for agriculture and horticulture, characterized in that it contains 2,2,2-trichloroethyl)-2-hydroxybenzamide as an active ingredient.