SU791198A3 - Agent for reducing transpiration of monocotyledonous cultured plants - Google Patents

Abstract

The transpiration of water in Indian corn, sorghum and millet plants, which assists in permitting growth of these plants in locations subject to perennial lack of water or temporary drought, is reduced by treating the plants or the soil in which the plants have been sown or are to be sown with a pyridazone derivative of the general formula <IMAGE> where R denotes unsubstituted phenyl, phenyl mono- or poly-substituted by halogen or alkyl of 1 to 3 carbon atoms, unsubstituted cyclohexyl, or cyclohexyl mono- or poly-substituted by halogen or alkyl of 1 to 3 carbon atoms and R<1> denotes chlorine or bromine.

Description

polar solvents such as dimethylformamide, dimethyl sulfoxide, methyl pyrrolidone, water, etc.

Aqueous forms of administration can be prepared from emulsion concentrates, pastes or wettable paints, oil dispersions by the addition of water. To make emulsions, pastes or oil dispersions, the substances as such or dissolved in an oil or solvent can be homogenized in water using a wetting agent that enhances the adhesion of the agent, dispersant or emulsifier. Concentrates can also be made consisting of an active ingredient, a wetting agent, an adhesion promoter, a dispersant or an emulsifier, and possibly a solvent or oil, and these concentrates are suitable for dilution with water,

As surface-active materials may be alkaline, alkaline earth and ammonium salts of lignosulfonic acid, naphthalenesulfonic acid, phenolsulfonic acid, alkylarylsulfonates, gshkilsulfaty, alkyl sulfonates, alkali and alkaline earth salts dibutilnaftapinsulfonovoy acids, fatty alcohol sulfates series, fatty acid alkali and alkaline earth metal salts, salts of sulfated hexadecanol, heptadecanol and octadecanol, salts of sulfated glycol ether of fatty alcohol, condensation products naphtha , ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylated polyox propylene, acetal lauryl alcohol polyglycol ether.

Corn transpiration during the light period

sorbitol ester, lignin, sulphite liquor and methyl cellulose.

Powders and dusting and dusting agents can be made by: mixing or co-grinding the active substance with a solid carrier.

Pellets can be made by binding the active ingredient to a solid carrier. Solid carriers are, for example, mineral lands, such as silica gel, silicic acids, silicates, talc, kaolin, attaclay, limestone, chalk, bolus, wood, clay, dolomite, diatomaceous earth, calcium sulfate and magnesium, magnesium oxide, ground plastics, fertilizers, such as ammonium sulphate, phosphate and nitrate, ureas, and plant products such as grain flour, tree bark flour, wood and nut shell flour, cellulose powder, and other solid carriers.

The preparations contain 0.1-95.0% by weight of active principle, preferably between 0.5 and 90.0% by weight. The amount used is 0.1 to 10.0 kg of active ingredient per hectare.

The effectiveness of the active principle is shown by the following examples. As an active start, the compound 1-phenyl-4-dimethylamino-5-chloro-pyridazone- (6) (designated as A) is taken.

Example 1.7 of young corn plants are dipped into the liquid nutrient medium that is covered with glass tiles. At a height of 16 cm, the active principle is introduced into the nutrient medium: 1.2 and 4 mg / l, which corresponds to the use in open ground of 1.5.3 and 6 kg / g. Then the plants are placed in gas-tight cylindrical glass vessels and connected to a steam metering unit. Measurement data is recorded and calculated by self-recording devices. Within eight days after the introduction of the active principle into the nutrient medium, day and night, the transpiration of corn of the first plants is measured in the light and in the dark at a temperature of 20-23 C. The effect of the proposed transpiration agent is given in Table. 1 and 2.

Table 1 in g lgO / vessel

71.7 129.4 152.3

1.5

BUT

817.1

84.9 Maize Transpiration during the dark period

Example 2. Corn is used in open ground 2 and

Shadows are grown in the same way6 kg of active ingredient per 1 ha.

as in example 1. Acting beginning As a comparative substance in this

abscisic acid is added to the liquid food sample, the medium at a height of 23 cm, and the names of the results are given.

but 1.3 and 4.0 mg / l, which corresponds to 35 tab. 3 and 4.

Corn transpiration during the light period

141,1161,3767,8100

141,1165,8785,1102.3

109.8129,9626,681,6

101.9116,5535,469,7

Continued table. one

Table 2

in g H2O / Vessel

Table 3 in g H2O / Vessel

Corn traspiration during the dark period in g KjO / cocyfl

Example 3. Corn plants are grown in pots in a greenhouse in a mineral soil. After sprouting of the seedlings and before the development of the first leaf, the pots are covered with vapor-proof foliage so that the hypoxia plant can grow only through a hole in the foliage. The soil is treated with the active principle at sowing, therefore, by pre-emergence method, the amount of 1.5; 3 and 6.0 mg / vessel, respectively, 1.5; 3.0 and 6.0 kg of effective start

Effect on the water balance of maize in greenhouse conditions

Effect on the water balance of corn under stress conditions s conditioned by the cabinet.

Control (non-processed)

1.5

T a b l and c a 4

on 1 ha. Water supply is set at 60% of maximum capacity. At a height of 15 cm, water consumption of plants in a greenhouse is measured at 200 ° C and 40% relative humidity.

and in a conditioned cabinet at 35 ° C and a relative humidity of 30%. It was found that the treated plants required less water than the untreated ones.

The results of the experiments are given in

tab. 5 and 6.

Table 5

Gablitsyb

100 63.8

34.9 24.0

Claims (2)

1. The use of 1-phenyl-4-Dime- .1. Raschke K .: Am. Rev. Plant Tylamino-5-chloropyridazone- (6) in ka-Physiol., Pulo Alto / Cal., 26, 309 as a means for reducing trans-5 340, 1975. -piratsii monocot cultivated 2. Patent of Germany No. 1105932, plant.kl. A 01 N 19/02, 1961. Continued table. 6 taken into account in the examination