Yield of seven dwarf coconut cultivars under four ammonium sulfate + potassium chloride levels in San Manuel soil, Leyte, Philippines
1993
Nunez, T.C. (Visayas State Coll. of Agriculture, Baybay, Leyte (Philippines). Regional Coconut Research Center)
Dwarf coconut cultivars responded similarly to the fertilizer treatment thus cultivar x fertilizer interaction was generally absent in the parameters studied. Significant increases in button count per inflorescence, bunch production per tree, nut yield per bunch and copra yield per nut were obtained with the application of fertilizers at recommended (150 g AS/100 gKCl to 2,000 g AS/1,500 g KCl per tree from planting to bearing stage) and at 150 percent of the recommended levels. Consequently, nut and copra yields were significantly higher at F2 and F3 levels compared to the control. F2 and F3 levels, however, did not differ significantly. Among cultivars, Coconino (NO), Lingkuranay (LKY) and Albuera Dwarf (ALD) had higher annual mean nut production per bunch and nut yield per tree than Malayan Red Dwarf (MRD), camotes (CAM), Catigan (CAT), and Tacunan (TAC). ALD was also the highest copra yielder with a mean of 2.13 tons/yr. followed by TAC and LKY whose means were 2.12 and 2.04 tons copra/yr, respectively, at 6-10 after planting. Bunch production per tree, number of nuts per bunch and copra yield per unit were moderately to highly correlated with copra yield per tree
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