Influence of elements of irrigation technology of medium and late varieties of soybean on soybean yield

In this article, under the conditions of alluvial soils of the Bukhara region, the main yield in the care of mid-ripening varieties of soy “Nafis” and late-ripening varieties of “Uzbek-6” is 4 times., With 714 m3./ha once before flowering, 739-763 m3/ha 3 times from flowering to the end of the application period, 3016 m3/ha with seasonal irrigation, 35,1737.8 with black film irrigation on wheat c/ha of soybean crops, 6 116 000 soums - 7 million soums Net profit amounted to 196 thousand soums, profitability increased by 77.2-90.8%.

Influence Of New Types Of Horizontal Ditches On The Growth, Development And Yield Of Winter Wheat In Saline And Groundwater Surface Soils

The average salinity of Jizzakh region in the vicinity of groundwater (1.5 m) under the influence of a newly built closed bed ditch, winter wheat is irrigated 3 times during the season, the current irrigation rate is 823-933 m3 / ha. The norm of seasonal irrigation was 2586 m3 / ha, and the grain yield of winter wheat was obtained depending on the experimental areas, ie the area of the new construction (experimental variant) and the old type of irrigated area (control). At the same time, the average grain yield in the experimental field was 43.2 t / ha, and in the control field - 40.1 t / ha.

INFLUENCE OF IRRIGATION REGIME AND FERTILIZER NORMS ON THE YIELD OF "ANDIJAN-36", S-6524 VARIETIES OF AVERAGE FIBER COTTON UNDER THE CONDITION OF TYPICAL SEEDIC SOILSS

On the condition of typical sierozem soils of Tashkent province the research were conducted to study the optimal irrigation and fertilizer application scheduling of Andijan-36 and S-6541 cotton varieties. The paper presents materials that on sierozem soils, it was recommended to irrigate cotton variety Andijan-36 with irrigation scheduling 65-65-60% Fc, irrigation scheme 1-2(3)-1(2) with 4 to 6 irrigation events, seasonal irrigation norm were 4450 to 5890 m3 ha-1, on cotton variety C-6541 with irrigation scheduling 70-70-60% Fc, irrigation scheme 1-3(4)-1(2) with 5 to 7 irrigation events, seasonal irrigation norm totaled 4730 to 5990 m3 ha-1 and in both cotton varieties optimal fertilizer application rate was N190 Р133 К95 kg ha-1. It was recommended to begin the irrigation events at the end of May, in the first decade of June months, the last irrigation events was considered to finish at the first 5 and 10 days of September months, irrigation duration till flowering 20 to 24 hours, flowering – yield accumulation 26 to 35 hours, maturation – boll opening phase 21 to 31 hours, irrigation intervals 12 to 28 days were recommended.