Effect of doses of N, P, K and incorporation of Canavalia ensiformis as green fertilizer in the vegetative growth of Coffea canephora Pierre ex-Froehner
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Abstract
The investigation was executed in the Estación Central de Investigaciones de Café y Cacao, property The Mandarin located to 150 msnm in Tercer Frente municipality, Santiago de Cuba province, in a Brown soil of the Ochre subtype without carbonates. The study was carried out in a plantation of Coffea canephora Pierre ex Froehner pruned in the 2003, with the objective of knowing the effect of different N, P and K dosis and the incorporation of the Canavalia ensiformis like green manure, during morphologic development of the coffees; being evaluated the height of the plants and the cup diameter. The statistical analysis was corresponded with the used design. The nitrogen requirements for the vegetative growth of the species Coffea canephora, after being submitted to the low pruning were checked that they are of 50 kg of N/ha for the first year and 75 kg for the second year and for the third year 100 kg/ha, similar to the requirements of the species Coffea arabica. It was enough the application of 50 kg of P2O5/ha in the second year to guarantee the vegetative development of the coffees. In Brown soils with high contents of available potassium as the one used is not necessary the application of this element in the first year after the pruning while the application of 80 kg K2O/ha in the second year guarantees acceptable levels of growth of the coffee, the Canavalia ensiformis incorporate as green manure didn’t show significant effects in the evaluated indicators of growth.
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References
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