Fertilizers are essential to modern agriculture; their overuse can have harmful effects on plants,\ncrops and soil quality. Thus, the study seeks to investigate, if (actually) the trio of Nitrogen, Phosphorus\nand Potassium (NPK) contribute to the growth and yield of yellow maize, and to determine at\nwhat proportion each of the elements is to be applied for optimum yield. Our findings revealed that\nNitrogen and Phosphoric fertilizer contributed significantly to the yield of yellow maize while there\nwas no significant effect of Potassium Further analysis on the mean separation of Nitrogen and\nPhosphorus using Duncanââ?¬â?¢s Multiple Range Testââ?¬â?(DMRT) showed Nitrogen at 50 kg/ha as significantly\nhigher than the other levels. For phosphorus, its effect at 20 kg/ha was significantly higher\nthan the other levels. Thus, the derived quadratic model: Y N P N2 P2 .
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