Response Of Coconut Seedlings To Spacing And Application Of Nitrogen And Potassium

Rebecco  M. Santiago,; Eufemia  A. Almaden,

Response Of Coconut Seedlings To Spacing And Application Of Nitrogen And Potassium

Eufemia A. Almaden | Rebecco M. Santiago

Abstract:

Significant variations in the effects of spacing were observed on the vegetative growth and overall vigor of coconut seedlings in the nursery. Plants grown at a distance of 40 cm and farther (60 and 80 cm) had bigger girth diameter, more split leaves, and greater vigor index value than plants grown at 30 cm apart. Similarly, nitrogen-potassium application exerted a significant influence on the vegetative growth of coconut seedlings. All plants applied with inorganic fertilizer, irrespective of the rate, were taller, had bigger girth diameter, and greater vigor index value than those which did not receive fertilizer. There were no significant interaction effects of nitrogen-potassium application and spacing on all parameters considered.

References:

CARROZA, L.R. 1977. Effects of population densities and light intensities on the growth and yield of soybean grown under coconut and in the open field. BS Thesis, ViSCA, Baybay, Leyte.
CHILD, R. 1974. Nutritional requirements and fertilizer practice in coconuts. Coconut. 2^nd Ed. Longman, London. pp. 130-156.
ELLIOT WEIER, T., RALPH STOCKING, C., and BARBOUR, M.G. 1974. Environ-mental cues and selection of programmed patterns of response. Botany: An Introduc-tion to Plant Biology. 5^th Ed. John Wiley and Sons, New York. pp. 372-274.
MAGAT, S.S. 1978. A review of fertilizer studies on coconut. Phil. J. Coco. Studies 3(4): 5160.
MAGAT, S.S. 1978. The influence of Cl sources and (NH4)2 SO4 at increasing rates on the growth of “polybag” seedlings. Mineral Nutrition/Fertilizer Studies on Coconut at PCA.
MENDOZA, A., and PRUDENTE, R.L. 1972. Fertilization on coconut at the Philippine Coconut Research Institute. Paper presented at the symposium on Agronomic Studies on Coconut during the National Science and Technology Week, July 10-16, 1972.
MENON, K.P.V., and PHANDALAI, K.M. 1960. Spacing of seednuts. The Coconut Palm (a monograph). Indian Central Coconut Committee. pp. 133-134.
PCA. 1976. Nursery Management Bulletin of Agriculture Research Branch, Bago Oshiro, Davao City. pp. 1-25.
SANTIAGO, R.M. 1978. Growth of coconut seedlings as influenced by different fertility levels and three soil types. Phil. J. Coco. Studies 3(4): 15-27.