The influence of time and level of incorporation of ipil-ipil leaves on cigar-filler tobacco (Nicotiana tabacum L.) [Philippines]
1984
Ramirez, R.C.
Results showed non-significant effects of time of incorporation of ipil-ipil leaves, applied alone or in combination with inorganic fertilizers, on the height of plants at 30, 60, 90 days after transplanting, leaf length, width, area, lamina-midrib ratio, specific leaf weight and quality index. However, cured leaf yield was significantly affected. Results indicate that application of the fertilizer combinations at 14 days before transplanting produced the highest cured leaf yield of 2.06 t/ha. The lowest yield was observed when the fertilizers were applied 21 days before transplanting with a mean 1.73 t/ha. On the varying levels of ipil-ipil leaves, applied alone or in combination with inorganic fertilizers, significant effects were noted on leaf length, lamina-midrib ratio, specific leaf weight, cured leaf yield and quality index of tobacco. The highest values on these parameters wre observed on plants applied with 120-90-50 kg/ha N-P2O5-K2O but was not significantly different with those applied with 100-120 kg/ha N using ipil-ipil leaves with or without P and K. On the other hand, non-significant effects were observed on leaf width, area and number of leaves
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