JPH0269405A - Plant growth regulating composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition synergistically enhancing activity by foliar treatment, steeply reducing using dose and expanding application time, further improving difference of sensitivity according to species and stability of effect, etc., by using together with specific foliar treating agent and specific soil treating agent. CONSTITUTION:(a) A compound expressed by the formula (A is H or CH3; R is OH, 1-6C alkoxy, alkoxyalkoxy, mono- or di-alkylamino or -O-Cat, Cat is organic or inorganic cation) is mixed with (b) (2RS,3RS)-1-(4-chlorophenyl)-4.4- dimethyl-2-(1H-1.2.4-triazole-1-yl)pentane-3-ol or (E)-1-(4-chlorophenyl) [or (E)-1- cyclohexyl]-4.4-dimethyl-2-(1.2.4-triazole-1-yl)-1-pentene-3-ol as active ingredient to obtain the aimed plant growth regulating composition having above-mentioned effect.

Description

[Detailed description of the invention] (Industrial use minute hand) TECHNICAL FIELD The present invention relates to a plant growth regulating composition.

(Prior Art) The compound (1) group of the present invention exhibits a growth regulating effect on various plants in foliage treatment. For grasses, it is a lodging reducing agent for rice and wheat, it is a plant height inhibitor for grass weeds such as grass and silver grass, and it is a labor-saving agent for mowing by suppressing the growth of new grasses for broad-leaved and coniferous trees. It is useful in a variety of fields, including as a fall growth inhibitor, as a flower bud inducer in the horticultural field, and as a fruit thinning agent for fruit trees.

On the other hand, (2R,S, 3R,S)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,
2゜4-triazol-1-yl)pentan-3-o-
[hereinafter referred to as compound (2)-1], (E
) -1-(4-chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1
-Penten-3-ol [hereinafter referred to as compound (2)
-2], (g) -1-cyclohexyl-4,
4-dimethyl-2-(1,2,4-triazole-1-
yl)-1-penten-3-ol [hereinafter referred to as compound (2)-5], for example, suppresses the inter-box spacing particularly well in grasses, and has a lodging-reducing effect on rice and wheat. In addition, in the field of horticulture, especially in potted plants, it is used to suppress the growth of new shoots and shoots, to adjust the shape of the tree and wheel, to guide flower buds, and to increase the ornamental value by producing more flowers. It also suppresses the elongation of leaf blades and inter-box spaces in lawns, reducing mowing, and also in non-agricultural fields, it suppresses the growth of grass-like weeds and other weeds.

(Problems to be Solved by the Invention) Group 1 Hicompounds (1) generally exhibit a strong inhibitory effect when treated with foliage, but there are differences in sensitivity depending on the species, for example, when used as a lodging agent for rice. Is the active ingredient It 10?
/ About 10 a is fine, but in the case of wheat, 50 f
/ Requires 10 a or more. There are also differences in susceptibility among trees and flowers; azaleas and Portulaca oleracea are sensitive to 16 and can be treated with a low dose, but for Abelia, Abelia, and Solanaceae plants, it is necessary to increase the dose of drug 1 several times. Even among grasses, there are large differences in sensitivity, with some species having a difference of as much as an order of magnitude, and large amounts are often required. Even in non-agricultural fields, there are large differences in susceptibility depending on grass species. For this reason, it is a chemical that generally causes less leaf blight, but it does have some drawbacks, such as phytotoxicity when sprayed at high concentrations and in small amounts.

On the other hand, compound*(2) group has the effect of strongly suppressing rice grain spacing and reducing lodging, but is a soil treatment agent and is difficult to absorb from the stems and leaves. Therefore, in field conditions, it is easily affected by soil quality and rainfall, and it is difficult to apply it to wheat, for example, over a wide area. It is also widely used in the field of horticulture, but for hedges and lawns that are piled up in the open, there is little absorption from the stems and leaves, and it is difficult to use drugs.
Because there are gaps, a large amount of water is required for uniform spraying and effectiveness, and the spraying efficiency is also poor.

Furthermore, the residual effect within the plant body and in the soil 1 is very long, and if the amount applied is too large, it becomes too effective and often has a negative impact on subsequent growth.

(Means for solving the problem of inconsistency) The compound (1) group is a foliage treatment agent, and the compound (2) group is originally a soil treatment agent, but by spraying a mixture on the foliage, most plants can use their respective treatments. A strong synergistic effect was observed that far exceeded the activity of the single agents.

Based on this synergistic effect, the present inventors investigated each of the 1111 aspects, and found that it is possible to reduce the amount of the drug used in most plants, or that it is actually ineffective and cannot be used feces. They discovered the usefulness of expanding the application to situations where the drug had not previously existed, and completed the present invention by further examining the dosage and other factors.

In the case of rice, compound (2) group is a ±1 treatment agent and has weak activity in foliage treatment, but its activity is greatly increased by adding a small amount of compound (2) group to compound (1) group and spraying on foliage. In addition, the suitable period for treatment is wider than that of Compound (1) # alone, and the effect is stable.

In the case of wheat, compound (2) group is a soil treatment agent, and it was thought that it would be difficult to apply it in a wide area, but compound (1)
By adding a small amount of compound (2) group alone and spraying it, the activity can be greatly increased and the total amount of drug can be greatly reduced.

In the case of trees, the total dosage can be reduced,
Not only can it be applied to almost all tree species, plantings, and open fields, but it also has the advantage that even when spraying with a high A degree, the A degree of each single agent is lowered, making it difficult to cause chemical damage. There is.

In the case of lawns, the compound (1) group is not effective on western grass, which has elongated leaf blades, but when mixed and sprayed with the compound (2) group, a strong suppressive effect can be seen. As a result, you can also see the labor-saving effect of kanashi pruning.

In the case of non-agricultural land, compound (1) group has strong suppression of gramineous plants and lacks sustainability in suppressing broad-leaved plants, but it can be suppressed for a long period of time by mixed spraying with compound/proboscis (2) group. , the number of grass species can be expanded significantly, and the total dosage can be reduced.

The synergistic effect according to the present invention is observed in all compounds of the compound (1) group, and the mixing ratio thereof is also observed in a wide range of 10:1 or more.

Practically speaking, in rice, compound (1) group is 1, and compound (2) group is preferably about 0.1 to α5, and in wheat and trees, compound (2)-2, which has the highest activity, is also α1. ~[
The ratio may be 12, and for the other group (2), a ratio of several times is better.

In lawns, for example, the compound (
2) -2 is 02 to 0.5 Similarly, for the other group (2), several times is better. These compound (2) group have a very long residual effect in the soil, and have the disadvantage of being a strong drug and being overly effective, so it is better to set the amount as low as possible. In the case of non-agricultural land, on the other hand, there is little absorption by leaves and foliage, and the migration into the soil is also a bit slow, which limits the absorption of weeds. In addition, since it is necessary to strongly suppress the effect for a long period of time, the amount of compound (2) group needs to be set to a considerably large amount.

For example, if the compound (1 group is 1), the compound (2
) -1 increases from 1 to 5.

When spraying the composition of the present invention, any formulation such as an irrigation agent, sol, fine granule, or powder may be used as long as it adheres well to foliage, and anionic ions can be used as a dispersing agent when making an integral preparation. type surfactants such as lignin sulfonate, naphthalene sulfonic acid condensate, dialkyl sulfosuccinate, nonionic surfactants such as polyoxyethylene nonylphenyl ether, polyoxyethylene stearyl ether, polyoxyethylene dodecyl ether, Polyoxyethylene lauryl ether, polyoxy 7 ethylene glycol monostearate, etc., ethylene glycol, an inert mineral carrier, etc. may be appropriately selected and added as adjuvants.

Note that insecticides and fungicides can also be mixed or sprayed at the same time.

Hereinafter, the present invention will be explained in detail with reference to Examples.

Table 1 shows representative compounds of the compound VIIJ (1) group of the present invention. Below are the individual compounds! Compound 21 is expressed as vJ*.

&1 Compound ()) Group wheat 1 (Continued) Table 1 (Continued) I 2 Test example 1 Various plant foliage treatment tests Grow various plants in clay pots of 100- and! ,,5
At the leaf stage, a nonionic surfactant was added at a spraying concentration of 500 ppm to 100 t/10 a of diluted solutions of single agents and mixtures adjusted to predetermined concentrations, and uniformly sprayed using a summer spray gun.

Spraying 3i! Table 2 shows the results of an observational investigation conducted after 1 hour.

The survey criteria were expressed as numerical values for suppression of plant height, and other responses were expressed as symbols.

: Same as untreated T : Severe separation: Suppression of 20chi G:! Recognized greening = 40 cm B: Withered leaves =
60 regret I = 80 arrogance I: 100% 1 (state not expanded since processing) [Hereinafter, it will be expressed using this standard. ] (Continued) Test Example 2 Mixed Spraying Test (Bluetail) Bluetail grown in a 100c+J clay pot was thinned to 10 trees in the 5th leaf stage, and compound (1) group compound/
164 and compound A10 as a single agent and compound (2)-
100t/10a of the specified diluted solution with the mixture with the hydrating agent No. 1
The amount was evenly distributed with a spray gun.

The mixing effect was investigated by observation after 3 d of spraying.

The results are shown in Table 3. The evaluation criteria are based on Test Example 1.

Table 3 Mixed spraying (Aobiyu) Test Example 3 Compound (1) group and compound (ω The integrated formulation and single agent of each group were uniformly sprayed in the area using a small powder duster and a hand-pressurized sprayer using a liquid pot equivalent to 100t/10a.

Spraying was carried out twice, 30 days and 7 days before rice heading, and culm length and panicle length were investigated for 15 plants in the area as harvested bait.

Results! 24.

[Each value is expressed as a percentage of non-treatment, and the numbers in parentheses indicate real numbers. ]

[The formulations listed in the table are used in the formulation examples below. ] Test Example 4 Barley Earing Feed Treatment A field of barley (Barley barley) sown in autumn using a conventional method was set as one unit area of 3 rows x 5 m, and Compound (1) group and Compound (2) were treated on the 30th and 10th day of Earing Feed. A sol preparation and an irrigation agent prepared together with the group, and each single agent were diluted to a predetermined concentration, and a nonionic surfactant was added at a spray concentration of 500 ppm.
The equivalent of 00t/10a was uniformly spread within the area using a hand pressure sprayer. Table 5 shows the results of sampling 15 plants at a time of harvest 1J and examining the culm length and Tokunaga.

Test Example 5 Aperia stem and leaf treatment test An Aperia hedge with a width of about 70 am and a height of 60 cm was divided into 1 m sections to form one unit section. The compound (1
) group and compound (2) group, and a diluted solution of each single agent, a nonionic surfactant was added to give a spraying concentration of 500 ppm, and the mixture was sprayed at 100 t/ml using a hand pressurized sprayer.
The equivalent of 10a was sprayed.

Table 6 shows the results of a field survey conducted three months after the spraying.

The criteria for the investigation are based on Test Example 1.

[The formulation companies listed in the table are used in the following test examples and formulation examples. ]

Kentara Key bluegrass during the spring growth period [225 in Saiji
d unit area was established, and 3 days after cutting, a nonionic surfactant was sprayed at a concentration of 500 ppm to the diluted solution of each integrated formulation and single agent.
The liquid amount of 100t/10a was uniformly sprayed in the plot using a hand pressurized sprayer. An observational investigation was conducted on the 21st day after the spraying. The investigation was carried out in accordance with Test Example 1 to determine the degree of inhibition and the kernel bark of the lawn.

The results are shown in Table 8.

Test Example 7 Non-agricultural land foliage treatment test Select a weedy area where Miscanthus sinensis and Goldenrod have priority, set up 10 unit plots, and spray a predetermined diluted solution at a concentration of 5.
A nonionic surfactant was added at a concentration of 0.00 ppm, and a liquid amount equivalent to 100 t/10 a was sprayed using a pressure sprayer.

An observation survey was conducted one month after the treatment. Plant height was measured after 15 months.

Plant height is shown from average to upper limit.

The plant height at the time of treatment was as follows.

Japanese pampas grass 70-1001 Seitaka Awaguchisou 5°~8°1 The results are shown in Table 8.

Formulation Example 1 Preparation of a wettable powder (single agent) Add 31 parts of clay and 3 parts of white carbon to 60 parts of Compound/169, finely pulverize with a jet mill, and then add powdered surfactant Norpol 5m59 (Toho Chemical Co., Ltd.). MS>5
1 part of 14-trail BB-75 (trademark of Nippon Idl Fat Co., Ltd.) was mixed well to obtain a 60-trace hydrating powder of compound/I69.

Formulation Example Z Preparation of sol (single agent) Compound 42. 40 parts of water, 5α3s of water, 3742.5 parts of surfactant Tsurupol, and Tsurupol 7512 as an antifoaming agent.
Add 5 parts of α, grind it with a sand grinder, take it out, and use it as a thickener and stabilizer.
l and VANGBL-B (trademark of Sanyo Chemical Co., Ltd.) Q, 2i
was added and stirred well to obtain a 40% sol of Compound Lagoon 2.

Formulation Example 3 Preparation of Wettable Powder (Formulation Layer 22) 80 parts of hydration powder of Compound 7F69 prepared in the same manner as Formulation Example 1 and IZS liquid of Compound (2)-2 prepared in the same manner as Formulation Example 1. Mix well with 20 parts of the agent.

Compound/I69 at 40% and compound (2) -2 at 2.5%
An irrigation agent containing water was obtained.

Formulation example 4. Preparation of irrigation agent (preparation standard 50) Compound 410
20 parts of 40MK compound (2)-3, and clay! Add i1g and 3 parts of white carbon, finely pulverize with a jet mill, mix well with 1 part of powdered surfactant Tsurupol 5059 (trademark of Toho Chemical Co., Ltd.), and mix compound 410 with compound 40 and compound (2) -5. An irrigation agent containing 20 t.

Formulation Example & Preparation of Sol (Formulation A 34) To 50 parts of the 40% sol of Compound Ryumei 2 prepared in Formulation Example 2, 50 parts of the 10% sol of Compound (2)-1 prepared in the same manner as in Formulation Example was added. Add compound/162 and compound (20%) by stirring well.
2) A sol containing 5 layers of -1 was obtained.

Formulation Example & Preparation of Powder (Single Agent) Compound prepared in the same manner as Formulation Example 1: 1 part of a 20% hydrating powder of I66 and Ravisol BB-75 (NOF ■ Trademark) (E
9 and 7 parts of clay were mixed well to obtain α2 fly powder of compound A6.

Formulation Example 1 Preparation of Powder (!M Formulation 1626) 1 part of a 20-ti water-use agent of compound/I66 prepared in the same manner as in Formulation Example 1, 1 part of a 10-ti-area water-use agent of compound (2)-3, and Ravisol BB-75. (Nippon Oil & Fats Co., Ltd. trademark) α5 parts, clay 9
7.5 parts were mixed well to obtain a powder containing [L2CH of compound/166 and 11CH of compound *(2)-5].

Hodogaya Chemical Industry Co., Ltd.

Claims (1)

[Claims] As active ingredients, a compound represented by general formula (1);
2RS, 3RS)-1-(4-chlorophenyl)-4,
4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol/(E)-1-(4
-chlorophenyl)-4,4-dimethyl-2-(1,2
,4-triazol-1-yl)-1-penten-3-
ol/(B)-1-cyclohexyl-4,4-dimethyl-2-(1,2,4-triazol-1-yl)-1
-Penten-3-ol (1) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ In formula (1), A represents a hydrogen atom or a methyl group, and R represents an alkoxy group of hydroxyl groups C_1 to C_6, an alkoxyalkoxy group, a mono- or dialkylamino group, or o-cat (here, cat is an organic or inorganic cation).