SU1468444A1 - Method of protecting maize pnants from weeds - Google Patents

Abstract

The invention relates to agriculture and can be used for pre-sowing seed treatment in the cultivation of corn by industrial technology. The aim of the invention is to increase the efficiency of the method of weeding maize plant varieties. Before sowing, the simazine herbicide is applied to the seeds in a mixture with the composition of pro-tvitel from fentiuram, polyvinyl alcohol and water in the amount of 2.0-2.5 kg per 1 ton of seed. The ratio of components is used as follows, its (kg / t): simazine 2.0-2.5, fentiuram 2.0, polyvinyl alcohol, water 30.0-50.0. The method reduces the contamination of maize crops by 85-90% while increasing the yield. 2 tab. i (L

Description

one

The invention relates to agriculture and can be used for pre-sowing seed treatment in the cultivation of corn by industrial technology.

The purpose of the invention is to increase the efficiency of the method.

The method is carried out as follows.

Corn seeds are inlaid with a mixture of substances in advance or before sowing using a conventional dressing machine (PS-10, etc.).

The mixture of substances is prepared as follows: the indicated amount of polyvinyl alcohol is poured with water and heated in a water bath until the polymer is completely dissolved (80-90 ° C). The solution is cooled to

room temperature, then the indicated amount of fentiuram and simazine is gradually added. The mixture is thoroughly mixed with water, the amount of water in the mixture depends on its consumption per 1 ton of seeds, while the doses of the substances do not change.

The mixture thus obtained is applied to corn seeds, i.e., the seeds are incrusted. The amount of water mixture per 1 ton of seeds depends on their humidity, but the water consumption should not exceed 50 liters. After incrustation, the seeds are spilled for 12-24 hours. Then they are sown in the soil in the usual way. Observations have shown that simazine does not have a fungicidal effect. Therefore, in order to preserve the protection of seeds from pests and diseases, a known fungicide, fentiuram, is included.

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At the same time, he is a synergist in action on simazine weeds.

In tab. 1 shows the data characterizing the effectiveness of the proposed method of protecting maize plants from weeds (field experiments).

From tab. I can see that when sowing maize seeds treated with fentiuram, the maize plants are not protected from weeds. In order to obtain a harvest, it is necessary to carry out hand weed to destroy weeds, which greatly increases the cost of production and is not carried out due to the absence of workers.

The use of simazine 50 g / ha (prototype) reduces the clogging of corn crops by 55-58%, which is insufficient for the formation of a biological yield.

The introduction of seeds inlaid into the soil with a mixture of substances: PVA-0.5, fentiura - 2 kg and simazine - 2-2.5 kg per 1 ton of seeds, which corresponds to its use 40-50 g / ha, ensures the death weeds in the protective zone of maize, respectively, are 85-90%, 30-32% higher than from adding the same amount of simazine to the soil. Comparing the effectiveness of the known method, i.e., the recommended dose of simazine (3 kg / ha), with the proposed method, it is obvious that the advantage of a new method for reducing the dose of herbicide application is 60 times (Table 1).

The comparative effect of the proposed and known methods on the productivity of corn is given in Table. 2

Corn silage yield with

using the proposed plant protection method was 51-68 c / ha higher than the prototype (adding simazine to the soil was 50 g / ha) and 17-34 c / ha higher than the background (PVA seed inlay and fentiuram with using manual weeding weeds), i.e., a reliable increase in the yield of maize grain was obtained using the proposed method of plant protection, which was 6.8-7.8 centners / ha compared to the prototype ).

Claims (1)

Invention Formula A method for protecting maize plants from weeds, including the introduction of simazine in The soil when sowing seeds, characterized in that, in order to increase the efficiency of the method, before sowing, simazine is applied to corn seeds mixed with the composition of fentiuram, polyvinyl alcohol and water at the following ratio of components, kg / ton of seeds: Simazin2.0-2.5 Fentiuram2,0 Polyvinyl alcohol0,5 Water 30-50 Control (seeds powdered with fentiuram 2 kg / ton) 80/22 90/45 Seeds are encrusted with a mixture: PVA-500 g / t, fentiuram 2 kg / t) (background) 78/24 89/47 proposed way The seeds are encrusted with the mixture: PVA-500, fenthym-2, simazine 2 kg / ton of seeds or its addition 40.g / ha33 / 5 21/5 Table 8/4 178/71 7/5 174/76 5/1 59/11 67/85 The same, only 2,5 kilogram per kilogram of seeds with the introduction of 50 g / ha 21/2 28/3 famous way Continuous application of simazine to the soil, respectively, the dose of its use with inlaid seeds, 50 g / ha (prototype) 38/20 40/7 Adding to the soil of the proposed dose of simazine 3 kg / ha In the numerator - the number of weeds in the protective zone of corn at the beginning of the growing season, in the denominator -. cleaning Data for comparison are taken from Chesalina G.A. Weed plants and the fight against them. M .: Kolos, 1975, p. 145. table 2 Control (hand weeding) 427 Seeds inlaid composition: LAN, fentig. Uram (2 kg / ton) (background with manual weeding) 462 Preferred method Seeds, inlaid, COMPOSITION: PVA, fentiuram (2 kg / t), simazine (2 kg / t) with the introduction of it per 1 hectare 40 g 479 Seeds inlaid with the composition: PVA, fentiuram (2 kg / t), simazine (2.5 kg / t) with the introduction of it per 1 hectare 50 g496 famous way. Continued table. one 3/2 52/7 71/90 3/3 81/30 55/58 80 30.3 35 34.0 3.7 52 37.2 6.9 7.i 69 36.2 5.9 6.R 5. Continuous, introduction of simazine into the soil: 50 g / ha (prototype)  C / Introduction of simazine 3 kg / ha (according to G.A. Chesalin) Control (according to G.A.Chesalin) Continued table. 2 3.0