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.
| Mualliflar | Akmal Shamsiev, Nurmamat Rajabov |
|---|---|
| Jurnal | Irrigatsiya va melioratsiya jurnali |
| Nashr sanasi | 2018-06-01 |
| Betlar | 13-16 |
| Til | en |
| DOI | 10.35938/2018.1.12.3 |
DOI: 10.35938/2018.1.12.3 · Maqolaning asl sahifasi
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