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Yield gradients in cocoa (Theobroma cacao L.) - shade and fertilizer experiments


, : Yield gradients in cocoa (Theobroma cacao L.) - shade and fertilizer experiments. Acta Horticulturae (49): 251-257

In a study of amelonado cacao conducted at Tafo, yield was not significantly affected either by species of shade tree (Gliricidia maculata and 14 others) or by the distance, (1.72 or 3.86 m) of the cacao tree from the shade tree.

Accession: 000579119

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Related references

Bonaparte E.E.N.A., 1975: Yield gradients in cocoa theobroma cacao shade and fertilizer experiments. Acta Horticulturae (Wageningen) 49: 251-257

Asomaning, E.J.A.; Acquaye, D.K., 1964: Some observations on the shade, fertilizer and water requirements of cocoa (Theobroma cacao L.). A review of published results of trials conducted in Ghana, supplemented with recent observations, shows that removal of shade after the first few years results in high yield increases in Upper Amazon as well as in amelonado cacao. A high light in...

Ahenkorah, Y.; Akrofi, G.S., 1977: Amazon cocoa (Theobroma cacao L.) shade and manurial experiment (K2-01) at Cocoa Research Institute of Ghana. III. Cumulative yield analysis. Yield analyses over 8 years are discussed in relation to NPK, shading and the effects of insecticide spraying and rainfall distribution. [For a previous part see HcA 39, 5701].

Ahenkorah, Y.; Halm, B.J.; Appiah, M.R.; Akrofi, G.S.; Yirenkyi, J.E.K., 1987: Twenty years' results from a shade and fertilizer trial on amazon cocoa theobroma cacao in ghana. The effects of three shade densities, NPK fertilizers and fertilizer-pest/disease relationship on Amazon cocoa (Theobroma cacao L.) over a 20-year period are reported. Yields equivalent to the mean yield from the unfertilized plots were achieved i...

Ahenkorah, Y.; Akrofi, G.S., 1968: Amazon cacao (Theobroma cacao L.) shade and manurial experiment (K2-01) at the Cocoa Research Institute of Ghana. 1. First five years. Shade, K and PK fertilizer effects were highly significant. Deshaded cacao plot yields were almost twice the heavily-shaded plot yields. No shade with PK treatment gave the highest yield.

Lockard, R.G.; Burridge, J.C., 1965: The levels of macro- and micronutrients in the beans of cacao (Theobroma cacao L.) in relation to shade, fertilizer, irrigation, and season. Nutrient levels in ripe beans collected from a field trial during 16 months were not affected by shade and irrigation treatments, but addition of fertilizer (NPKMg mixture) increased the levels of P and Mn and decreased the levels of Cu and Mo in...

Burridge, J.C.; Lockard, R.G.; Acquaye, D.K., 1964: The levels of nitrogen, phosphorus, potassium, calcium and magnesium in the leaves of cacao (Theobroma cacao L.) as affected by shade, fertilizer, irrigation and season. The greatest variation in concentration of nutrients in the leaves was due to the time of the year when the samples were collected. The lowest concentrations of N, P and K were found in leaves collected during the peak of the main season harvest....

Lockard, R.G.; Burridge, J.C., 1965: The levels of manganese, sodium, aluminium, iron, boron, zinc, and copper in the leaves of cacao ( Theobroma cacao L.) as affected by shade, fertilizer, irrigation, and season. Lowest concentrations of Zn and Cu were found in leaves collected during the peak of the main-season crop, and those of Mn, Al and Fe in leaves collected a month after the main harvest; most elements increased sharply to a maximum before completio...

Adeyemi, A.A.; Chude, V.O., 1999: Evaluation of fabric pot in raising cocoa (Theobroma cacao): effects of pot on the growth and yield of cocoa on the field. In experiments at Ibadan, 3 nursery containers were compared for growing cocoa cv. F3 Amazon. Results showed that the superiority exhibited in the nursery of cocoa raised in the fabric pots over those sown in the 30 x 12.5 cm and 15.0 x 12.5 cm bl...

Taylor, S.J.; Hadley, P., 1988: Relationships between root and shoot growth in cocoa (Theobroma cacao L.) grown under different shade regimes. Young cocoa plants (cv. Amelonado) were housed in a controlled environment glasshouse under 3 shade regimes (no shade, 25% shade, 50% shade). The plants were grown in rockwool blocks in a nutrient film system which allowed easy access for measurem...