PJB-2023-344
Dynamics of Nutrient Uptake in Rice Crop As Affected by Different Fertilizer Sources of Potassium
Syed Shahid Hussain Shah
Abstract
Rice is the second most produced cereal in the world after corn. Crop growth, development and nutrient uptake depends upon nutritional supply as well as climatic factors. Nutrient uptake dynamics of rice crop are still unexplored to justify the superiority of one source of potassium over another. Moreover, nutrient uptake at specific interval affecting crop growth rate is also unexplored. Present study was carried out to document such gaps at four different agroclimatic locations viz Multan, Lahore, Faisalabad, and Sahiwal. Four treatments were used i.e., control with zero potassium (T1), Muriate of Potash (MOP) (T2), Sulphate of potash (SOP) (T3), and Value-added potash in the form of Zarkhez plus (ZKZ plus) (T4). Crop growth and development attributes were recorded along with fresh and dry weights. Plant tissue samples were analyzed for potassium, phosphorus (P), zinc (Zn), and boron (B). Application of potassium significantly enhanced the uptake of P, Zn and B that translated into higher crop productivity. SOP was found superior source of potash than that of MOP, due to presence of sulphate that favors crop growth and development at later stages of the crop. Value added potash in the form of Zarkhez Plus proved better source over MOP and SOP in term of higher nutrients uptake and resultantly crop productivity due to presence of highly effective humates, organic filler and bio stimulants. Plant removed more potassium, phosphorous, zinc and boron in the presence of ZKZ Plus therefore, it is highly recommended to use ZKZ Plus as a superior source of K fertilizer
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