Effect of NPK fertilisers on trace element nutrition of three coconut genotypes
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Date
1975
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Abstract
The micronutrient status of soil and leaf was studied in three coconut genotypes, West Coast Tall, Tall x Dwarf, and Dwarf x Tall, receiving three levels of NPK fertiliser combinations. The lowering of pH by NPK treatments enhanced the availability of Mn, Fe, and Al in soil. However, only Mn was taken up by the palm in larger amounts. Water soluble Mn in soil was highly correlated with plant uptake. The micronutrient requirements of the three genotypes were similar. Zn and Cu requirements of the palm were increased by increased NPK application. The implication of enhanced micronutrient availability in soil following NPK fertilization is discussed.
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Reprinted from Journal of Plantation Crops 3(1): 11-13,1975