In the conditions of typical gray soils of Tashkent region, before sowing of winter wheat under the
plow once in three years in addition to the norms of mineral fertilizers N200P140K100 ва
N150Р105K75 kg / ha 1.5-3.0-4.5 t per hectare. The effect of irrigation on soil agrophysical properties
and plant growth and grain yield was studied for three years in the order of 60–70–60 and 70–80–
70% of the soil moisture before irrigation during the period of application, using bentonite mud.
The obtained data show that the pre-irrigation soil moisture is irrigated in the order of 60–70–60%
relative to LMFC, in addition to the norms of mineral fertilizers (N200P140K100 ва N150Р105К75 /
hec) 1.5–3.0–4.5 t per hectare. germination of seedlings 18–16 compared to control options when
using bentonite silts in the amount of 18–16; 33–28 and 46–44 m2 /piece, total number of stems
49.0–81.6; 96.6-99.4; 104.7-108.3 m2 / piece, and the number of productive stems is 47.4-76.1; 97.7-
100.3; 102.2-107.6 m2 / grain was observed, grain yield was 6.9-11.3; 8.8-13.4; It was noted that it was
higher than 10.1-14.7 ts / hec.
Pre-irrigation soil moisture is irrigated at 70–80–70% relative to the LFMC, in addition to the norms of
mineral fertilizers N200P140K100 ва N150P105K75 kg / hec, 1.5–3.0–4.5 t per hectare. The number of
seedlings germinated per 1 m2 in the variants using bentonite mud in the amount of 22–41–50 to 15–
36–51 m2 / piece compared to the control variant, the total number of stems 44.2–42.4; 55.8-60.8;
86.5-92.3 m2 / piece, number of productive stems 47.5-61.2; 60.2-79.6; Found to be higher than 90.0–
108.6 m2 / unit, 5.6–9.4 per hectare; 8.2-11.9; 10.0-13.6 quintals of additional grain yield was obtained.

Typical gray soil,, soil volume weight

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