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Shoot growth in Coffea arabica L, 1: Responses to rainfall when the soil moisture status and gibberellin sypply are no limiting

by Browning, G.
Publisher: Ene 1975Subject(s): COFFEA ARABICA | ETAPAS DE DESARROLLO DE LA PLANTA | ACIDO GIBERELICO | PRECIPITACION ATMOSFERICA | KENIA | CRECIMIENTO FOLIAR | HUMEDAD DEL SUELO | COFFEA ARABICA | PLANT DEVELOPMENTAL STAGES | GIBBERELLIC ACID | PRECIPITATION | KENYA | SOIL MOISTURE | COFFEA ARABICA | STADE DE DEVELOPPEMENT VEGETAL | ACIDE GIBBERELLIQUE | PRECIPITATION | KENYA | HUMIDITE DU SOL In: Journal of Horticultural Science (RU) v. 50(1) p. 1-11Summary: Individual branches on mature trees of Coffea arabica L. growing in the field at Ruiru, Kenya which were treated weekly with saturating dosed of gibberellin and beneath which the soil was irrigated weekly to keep it near to field capacity, produced leaves faster when it rained and the remperature fell rapidly during the day. Unirrigated trees behaved differently, irrespective of gibberellin treatments, failing to flush on two occasions and responding more than the irrigated trees to the main rains in May. The trees appeared more sensitive to gibberellin during the hot, dry season than during the rainy season or the cool, dry season. Both irrigation and gibberellin, which failed to replace the effect of irrigation, increased internode extension proportionately more than node production
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++Dat. num. 25 ref. Sum. (En)

Individual branches on mature trees of Coffea arabica L. growing in the field at Ruiru, Kenya which were treated weekly with saturating dosed of gibberellin and beneath which the soil was irrigated weekly to keep it near to field capacity, produced leaves faster when it rained and the remperature fell rapidly during the day. Unirrigated trees behaved differently, irrespective of gibberellin treatments, failing to flush on two occasions and responding more than the irrigated trees to the main rains in May. The trees appeared more sensitive to gibberellin during the hot, dry season than during the rainy season or the cool, dry season. Both irrigation and gibberellin, which failed to replace the effect of irrigation, increased internode extension proportionately more than node production

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