Effect of Irrigation and Fertilizers on Rice Yield in Conditions of Kyzylorda Irrigation Array

Axaule  Ondasynovna Olzhabayeva¹ , Alexey Grigoryevich Rau¹ , Erbol Sarkynovich Sarkynov¹ , Zhanuzak Nurdildaevich Baimanov² and Asylkhan Ashimovich Shomantaev³

¹Kazakh National Agrarian University, The Republic of Kazakhstan, 050010 Almaty, Abai 8.

²Kazakh Research Institute of Rice named after I. Zhakhaev, The Republic of Kazakhstan, Kyzylorda, 120008, Abay Avenue, 25 b.

³Kyzylorda State University Korkyt Ata, The Republic of Kazakhstan, Kyzylorda, ul. Ayteke Bi, 29 A.

DOI : http://dx.doi.org/10.13005/bbra/2363

ABSTRACT: The rice root nutrition is easy to regulate, and, therefore, it is the basis of high yields. It still remains unknown how the absorbed salt is used at different vegetation phases, so it is not always possible to explain the real causes of low yields. Most often it is associated with poor climatic conditions in the year. However, weather conditions cannot explain the lack of crop growth with an annual increase in the amount of fertilizers applied. The field experiments have been conducted to determine the standards and timing of fertilizers application for rice on degraded lands (Nauryzbai section), which provides a high rice yield and the efficiency of irrigation water use. The trial establishment on the standards and terms of mineral fertilizers application at a rate has been performed to determine the optimal fertilizer rate (N₁₂₀P₉₀K₆₀; N₁₅₀P₉₀K₆₀; N₁₈₀P₉₀K₆₀.) According to the results, the optimal fertilizer rate after melilot is N₁₅₀P₉₀K_60.

KEYWORDS: irrigation regime; rice irrigation system; mineral fertilizers; salinization; land improvement activities; drainage

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