SU1638138A1 - Method for preparation of mixed fertilizer - Google Patents

Abstract

The invention relates to the field of production of mixed mineral fertilizers and makes it possible to impart them with herbicidal properties and increase the yield of agricultural crops. The method consists in the use of an organic modifying additive to mineral fertilizers. As an additive, 0-isopropylmethylthiocarbamate of the formula en3 - ns - asn-3 III SCH is used, in an amount of 1 wt. at 20-100 mah. mineral fertilizer. 6 tab.

Description

The invention relates to the production of mixed fertilizers with herbicidal properties.

The purpose of the invention is to impart herbicidal properties to mineral fertilizers and to increase the yield of agricultural crops.

The method consists in the use of 0-isopropylmethylthiocarbamate (ITK) as a modifying additive to mineral fertilizers in the amount of 1 wt.h. at 20-100 mah. mineral fertilizer. Modification of mineral fertilizers 0-isopropyl methiocarbamate formula

CH3-Sh1-S-O-CH-CH3

SСН3

leads to a significant increase in yield of green mass of corn

compared to the usual background of mineral fertilizers, as well as to the inhibitory effect on weeds.

Modification of mineral fertilizers was carried out by their mechanical mixing with the ITC for 6 months. before depositing.

The content of ITC in the studied mineral fertilizers is presented in Table. one.

A 14-variant experiment was established in vegetative, vessels in 4-fold repetition.

The scheme of the experiments is presented in table.

One of the components of the mixture of fertilizers in each experiment with the laboratory code GSU-1 - GSU 11 contained a modifying additive ITK, the rest

oe with

00

W

00

components — ammonium nitrate, potassium chloride, and simple superphosphate — were introduced in amounts that provide a total dose of nitrogen, phospho-

ra and kali

 11vo So

TO

60-90

Accounting for the yield of green mass of corn was carried out by a direct method in the phase of milky-wax ripeness of the grain.

Counting data is presented in Tables 3 and 4.

As follows from table 3, the introduction of 0-isopropylmethylthiocarbamate in all variants increased the yield of green mass of corn. The exception is option 7, where the yield of green mass of corn slightly decreased compared with the usual background of the fertilizer (option 13), which is within the limits of experimental error. A particularly significant increase in yield was noted when introducing GSU-1, GSU-9, GSU-10 and GSU-11 - by 100% or more.

Analysis of the data on the yield of air-dry mass of corn (Table 4) also indicates the positive effect of 0-isopropylmethylthiocarbamate on increasing the efficiency of mineral fertilizers. An exception is options 5.7 and 9. GSU-5 (option 5) has a slight inhibitory effect on weeds, which is obviously due to the low dose of ITK in this variant 4.0 kg / ha. There was no increase in the yield of the air-dry mass of corn when adding GSU-8A. In this variant, the stimulating effect of the drug in the dosage under study on the development of weeds was observed, which led to a slight decrease in the yield of air-dry mass of corn. The ambiguous effect of the preparation GSU-8A on the yield of green mass of maize in the raw and air-dry state indicates the water-borne properties of this preparation. In the case of the preparation GSU-7, the yield of green mass of corn and in raw

| AND IN AIR-DRY CONDITION BELOW BY -

compared with the usual nutritional background (option 13). When using modified fertilizers based on simple superphosphate (options 1 and 6), double superphosphate (options 2 and 5), azofoski (options 3 and 4), a regular increase in the yield of green mass of corn with an increase in 0-isopropylmethyl thiocarbamate was observed

- - with

oh 10

15

thirty

35

m tm41

6381384

Accounting for weeds was carried out by a quantitative-weight method. The dominant weeds in corn sowing were the width of the grass thrown back (more than 50%), martyr white, less often the garden purslane, and there were no mice with selective effect of 0-isopropylmethylthiocarbamate as an additive to mineral fertilizers for various types of weed vegetation.

The results of weed counting are presented in Table 5.

The infestation of maize crops when TKI is applied is lower compared to the usual nutritional background (variant 13), which is in good agreement with the increase in the yield of the wet and air-dry weight of the corn. The inhibitory effect of ICT on the accumulation of wet weed mass compared with the control was noted when introducing GSU-1, GSU-2, GSU-3, GSU-4, GSU-5, GSU-7 and GSU-9. The most significant inhibitory effect on the development of weeds was caused by the introduction of GSU-3 and GSU-4 (the basis of the preparations is azofosk), here we observed a decrease in the wet weed mass compared to the usual nutritional background, respectively, by 54 and 32%. GSU-6, GSU-8, GSU-8A, GSU-10 and GSU-11 possessed a stimulating effect on weeds, and all of them stimulated not only the accumulation of wet weed mass, but also significantly increased the yield of green grass. masses of corn in wet and air-dry condition.

20

25

five

Thus, tests of mineral fertilizers of GSU-1-GSU-11 modified with 0-isopropyl methylthiocarbamate showed that the introduction of a modifying additive to mineral fertilizers significantly improves their efficiency. The greatest increase in the yield of green mass of corn in the raw state, which is 121–207%, t „e0 by more than 2-3 times compared with the usual background of mineral fertilizers, is achieved by treating simple superphosphate, urea, ammonium nitrate with 0-isopropylmethylthiocarbamate, and nitroammofoski in the amount of 1 mach. at 20-100 mah. fertilizer. In the case of treatment with 0-isopropylmethylthiocarbamate simple superphosphate, double superphosphate and azo. Table. 2

Claims (1)

At the same time, a significant inhibition of weed vegetation is observed, amounting to 7–54% compared with the usual background of mineral fertilizers. In other cases, except for ammophos, the stimulation of weed growth is significantly less than the increase in corn yield (in%) to the usual background of mineral fertilizers. Invention Formula A method of obtaining a mixed fertilizer by introducing an organic modifying additive into a mineral fertilizer, characterized in that, in order to impart herbicidal properties to the fertilizer and increase the yield of agricultural crops when it is used, 0-isopropylmethylthio carbamate is used as an organic modifying additive CH3-OT-S 3I $ o-nsn, I, n 15 in the amount of 1 mac. at 20-100 mah. mineral fertilizer Table 1 GSU-1 (simple superphosphate) ammonium nitrate potassium chloride GSU-2 (double superphosphate) ammonium nitrate potassium chloride GSU-3 (azofoska) GSU-4 (azofoska) GSU-5 (double superphosphate) ammonium nitrate potassium chloride Table 2. 18090 180 180 180 180 90 90 90 90 60 60 90 90 60 22.5 9.8, 37, -2 15.3 4.0 Table3 Experience Laboratory fertilizer cipher GSU-1 GSU-2 GSU-3 GSU-4 GSU-5 GSU-6 GSU-7 GSU-8 GSU-8A GSU-9 GSU-1O GSU-1T eleven (without NTK) "So f 22.5 9.8 37.2 15.3 4.0 9.3 3.8 37.2 15.3 8.0 11.5 5.2 67.5 29.4 111.6 45.9 12.0 27.9 11.4 116,6 45.9 24.0 34.5 15.6 Compiled by “Vilinska Editor M. Nedoluzhenko Tehred L. Oliynyk Order 900 Circulation 292 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 That l and c and b 922.8 471.0 507.0 487.8 370.2 491.7 271.5 560.1 442.5 791.7 664.5 831.6 300.0 1103.4 321.5 389.2 353.1 132.0 360.4 -65,0 489.0 267.9 924.4 685.3 999.4 Proofreader A. Osaulenko1 Subscription