The effect of different rates and forms of sulfur on seed yield and micronutrient uptake by chickpea
2012
Islam, M., National Fertilizer Development Centre, Islamabad (Pakistan)
Field experiments were conducted at two different locations (Barani Agricultural Research Institute Chakwal and farm field Talagang, district Chakwal) for two crop-growing seasons in northern rainfed Punjab, Pakistan, to assess the yield and micronutrient uptake of Cicer arietinum. The treatments were four combinations of two levels of sulfur (15 and 30 kg/ha) from two sources (gypsum and ammonium sulfate) and a no-sulfur control. S application resulted in a significant increase in seed yield up to 17% over control. Ammonium sulfate was a more efficient source of sulfur than gypsum at both locations. S application resulted in a significant increase in micronutrient uptake by plant; however, the effect of S application on soil pH at the end of the experiment was not significant. Soil Zn and Cu availability increased with S application at the end of the two year experiment. Tissue Cu and Fe, and soil available Cu and Fe correlated negatively with soil pH. S should be applied to chickpea grown under rainfed conditions in order to increase seed yield, to improve nutritional composition of product and to enhance efficiency of other fertilizers.
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