Evaluation of source of cuttings, length of cuttings, and planting distance of sweet potato in the highlands
1990
Dalang, P.A. | Pacuz, L.M. | Gonzales, I.C. | Luis, J.S.
Vine portions as planting material, lengths of cutting and planting distances were evaluated to determine their effect on the growth, survival and yield of sweet potato under La Trinidad, Benguet [Philippines] condition from May 1989 to January 1990 using a local cultivar Kalbo-oy. The tip, middle or basal cuttings of sweet potato did not produce statistically different herbage and root yields. However, the total revenue derived from the marketable and non-marketable roots including herbage yield was highest using the middle portion of vine. Marketable yield and returns of investment were highest with 40 cm-long cuttings but observed to be insignificant when compared with the 20 cm, 30 cm, and 50 cm-long cuttings. Marketable roots and returns on investment (ROI) were increased with further planting distance on sweet potato both differences were found not to be statistically significant. Plants grown from wider spacing gave a relatively high percentage of marketable root and ROI. However, differences in survival and yield percentage from those grown at various spaces were not statistically significant.
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