Study on Differences of Wheat Varieties in Moisture, P Uptake and Grain Yield Under Dry Land Condition

Document Type : Research Paper

Authors

1 Researcher, Dryland Agricultural Research Institute

2 Researcher, Agricultural and Natural Resources Research Center of East Azarbayjan

Abstract

Soil phosphorus (P) deficiency is limiting plant growth factors in many soils. The deficiency resulted from P ion exchange, precipitation and transformation. Soil moisture deficiency also limits P uptake by reducing P diffusion and plant root growth. Since, the response of different wheat varieties and genotypes in P and soil moisture uptake and growth might differ. Therefore, differences of wheat varieties for moisture from different depths and P uptake were studied. In order to do this study, experiment was conducted with 6 wheat varieties )Sardari, Azar 2, Sabaln, Ogosta/sefid and Fenkang15/Sefid and Pvn”A”/Bow”S”//Lira"S"/31 Shahi) with randomized complete block design (RCBD) with four replications in Maragheh research station for three years (1380-1383). Soil moisture fluctuations for different wheat varieties in three replications were also determined for two different depths (5-10 and 10-20 cm root zone). Data of different varieties for moisture, P uptake, grain and straw yield were collected and analyzed in Genstat 5. The results showed that soil moisture contents differed significantly (P≤0.01) in two different soil depths 5-10 and 10-20 cm. Soil moisture level in 5-10 cm depth in morning measurement compared to afternoon were differed, which were higher than afternoon measurements. In addition, moisture content in root zone for different wheat verities varied. Wheat grain and straw yield, harvest index, P uptake were differed significantly (P≤0.01). Sardari, Azar 2 and Ogosta compared to other wheat varieties had greater moisture uptake, leading to increased P uptake grain yield. However, to some extent harvest index was different for wheat varieties. It can be concluded that soil moisture contents were differed for all wheat varieties. Wheat varieties in moisture uptake from different soil depths, and P uptake and grain yield varied. Sardari, Azar 2 and Ogosta had greater moisture and P uptake, and grain yield compared to B31 and Fankang varieties.

Keywords

References

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Iranian Journal of Soil Research
Volume 22, Issue 2
February 2009
Pages 155-163

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