Relations possibles entre la variation de la teneur en eléments mineraux de la cabosse de differents cacaoyers et la sensibilité envers le Phytophthora palmivora

A study has been made of the variation in level of nitrogen, phosphorus, potassium, calcium and magnesium in the pod wall in relation to susceptibility to Phytophthora palmivora. The investigations covered: - Amelonado pods at different stages of development. - Pods set at different periods of the year in Amelonado and Upper Amazon cacaos. - Pods harvested from trees growing under forest shade or in the light. Under forest shade when the susceptibility becomes greater there is increase in the level of potassium and a decrease in calcium and magnesium. The results from trees in full light are different. Trials will be started using calcium and magnesium fertilizers and fungal inoculation to see whether a relation can be established between mineral levels and the susceptibility of the pod

Bibliographic Details

Main Authors:	Jones, Earl 81495, 107834 Quesnel, V.C., 56331 Chalmers, W.S., 68473 Fordham, R., 80036 Iton, E.F. eds., 123506 Tarjot, M., 97646 Murray, D.B., 5330 Cocoa Research Institute, St. Augustine (Trinidad y Tobago), 4. International Cocoa Research Conference St. Augustine (Trinidad y Tobago) 8-18 Ene 1972
Format:	biblioteca
Published:	St. Augustine (Trinidad y Tobago) 1972
Subjects:	THEOBROMA CACAO, PHYTOPHTHORA, PODREDUMBRES, ENFERMEDADES FUNGOSAS, RESISTENCIA A LA ENFERMEDAD, FERTILIZANTES NPK, CALCIO, MAGNESIO, SOMBRA, LUZ DEL DIA, CLONES AMELONADOS, CLONES AMAZONAS,
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