SU1563640A1 - Method of disinfecting substrate under conditions of protected ground - Google Patents

Abstract

The invention relates to agriculture, in particular to the disinfection of nutrient substrates in protected ground. The aim of the invention is to reduce the consumption of the drug, reducing the energy intensity of the process. Decontamination of the nutrient substrate under the conditions of a protected soil is carried out by introducing a dazomet under the substrate layer to be decontaminated, mixed with the lower part of the substrate layer so that the ratio of the dazome to the substrate is 1: (60-80), respectively, after which the mixture is moistened to moisture 80-90%. The proposed method allows a 25% reduction in the dose of the disinfectant, reduces the energy intensity of the process and increases the safety of work, because the drug is applied under the substrate layer. 2 Il.

Description

one

(21) 4410732 / 30-15

(22) 04/14/88

(46) 1G.05.90. Bul Number 18

(71) Moldavian Scientific Research Institute of Tobacco

(72) F.I. Zagorn, F.Yu. Burmenko, M.T.Tkach and S.S.Natenzon

(53) 631.589.2 (088.8)

(56) Technologists growing tobacco seedlings on an irremovable nutrient mixture in greenhouses and film greenhouses. M .: Ministry of Agriculture of the USSR, 1985.

(54) METHOD OF DECOMPOSITION OF NUTRITIONAL SUBSTRATE IN CONDITIONS OF PROTECTED SOIL

(57) The invention relates to agriculture, in particular to the disinfection of nutrient substrates in protected ground. The aim of the invention is to reduce the consumption of the drug, .- reducing the energy intensity of the process. The disinfection of the nutrient substrate under the conditions of a protected soil is carried out by introducing a dazomet under the substrate layer to be disinfected, mixed with the lower part of the substrate layer so that the ratio of the dazomet to the substrate is 1: 60-80, respectively, after which the mixture is moistened to moisture. 80-90%. The proposed method allows a 25% reduction in the dose of the disinfectant, reduces the energy intensity of the process and increases the safety of work, i.e., the preparation is applied under the substrate layer. 2 Il.

S

The invention relates to agriculture, in particular to the disinfection of nutrient substrates in protected ground,

The purpose of the invention is to reduce consumption, reduce the energy intensity of the process.

Figure 1 shows the dependence of the degree of decomposition of the dazomet (P) on the soil moisture content (W) and the ratio of the substrate with mixing from 1 part of the preparation (A); Fig. 2 shows the curves for the degree of damage to plants by root rot (P) from damage to the applied preparation (D) according to the proposed method (1) and basic (2).

Example. Studies have been carried out to study the effect of the mixing ratio of the dasomet preparation with the substrate and the degree of moisture on the disinfection efficiency.

The degree of decomposition of a dasomet when mixed with a decontaminated soil is important due to its quantitative ratio to the soil and the moisture content of the soil by the Research.

test

sd

WITH

®

J

found

that the optimal ratio of the drug and the soil is 1 part of the drug to 60-80 parts of the soil, and the soil moisture should be 80-40%. With a lower ratio of soil and water in relation to the drug, incomplete decomposition of the dazomet takes place and, as a result, low percentage of disinfection nutrient soil. With a larger ratio, the degree of its decomposition does not increase, and the effect of disinfection is the same (see, Fig. 1, 2).

Figure 1 shows the dependence of the degree of decomposition of the dazomet (P) on the soil moisture (W) and the ratio of the preparation and the soil in the dyeomet – soil mixture, (A). The laboratory tests were carried out at 70, 80, and 90% soil moisture. It can be seen from the graph that the maximum decomposition of the dazomet occurs at a soil moisture of 80-90% and the ratio of ta and daeomet 60-80 parts of soil to 1 part of the preparation

Figure 2 shows the curves of the degree of damage to seedlings of black root rot (P) and the degree of contamination of the breeding ground (C) as a function of the amount of the applied preparation (D) according to the proposed (curve 1) and basic (curve 2) methods. From the graph it can be seen that to achieve the same effect of disinfection 20 by the proposed method, it is enough to deposit 300 kg of the preparation per 1 ha of nutrient soil, and on the baseline it is necessary to apply A

Claims (1)

400 kg / ha, i.e. The proposed method 25 The formula of the invention for the introduction of the drug can reduce the dose by 25%. In the greenhouse, the method of disinfection of the nutritional sifter was tested to be 18% of the contamination to control. Thus, the use of the proposed method of disinfection of nutrient soils in the breeding grounds can reduce the consumption of the drug to 300 kg / ha, while maintaining the same effect of disinfection. The safe execution of the work on the disinfection of nutrient soils by the proposed method is ensured by the fact that the preparation is delivered directly under the soil layer. This eliminates the possibility of dust particles in the air of the working area. The energy intensity of the method is reduced due to the fact that in this case there is no need to shovel or nutritious soil to seal and evenly distribute the drug throughout the height of the nutrient layer. A method of disinfecting a nutrient substrate under greenhouse conditions, including si dazometom. The preparation was applied directly on the substrate of the dazomet and the subsequent right under the decontaminated layer. Dose of application 300 kg / ha, soil temperature 20 ° C5 soil moisture 90%. When the ratio of the mixture of the drug - soil 1; 70. decomposition of the drug, i.e. active evolution of gas occurs within 230 hours. At the same time, the degree of decomposition of the drug reaches 89%. After that, it turned out that the intensity of the development of black root rot in seedlings was 6%. Debris hotbed accounted for 18% of debris to control. Thus, the use of the proposed method of disinfection of nutritive soils in the breeding grounds allows to reduce the consumption of the drug to 300 kg / ha, while maintaining the same effect of disinfection. The safety of the performance of work on the disinfection of nutrient soils by the proposed method is ensured by the fact that the preparation is supplied directly under the soil layer. This eliminates the possibility of dust particles in the air of the working area. The energy intensity of the method is reduced due to the fact that in this case there is no need to shovel the nutrient primer to seal and evenly distribute the drug throughout the height of the nutrient layer. Invention Formula A method of disinfecting a nutrient substrate under greenhouse conditions, including 0 mixing it with the substrate and moistening, characterized in that, in order to reduce consumption, reduce the energy intensity of the process, the dazomet is introduced under the substrate layer to be decontaminated, mixing is carried out with the lower part of the substrate layer, ensuring the ratio of dazomet to substrate 1 :( 60-80), respectively, and moistening is carried out until the substrate humidity is 80-90%, 40 JOB 200 60C,% 20 ten 300 400 FIG. 2 500