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| Formato: | Artículo científico |
| Lenguaje: | es |
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Instituto Nacional de Ciencias Agrícolas
2000
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=193232232014 |
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- LA FERTILIZACIÓN FOSFÓRICA DEL Coffea arabica L. EN SUELO FERRÍTICO ROJO OSCURO. PARTE I. FERTILIZACIÓN MINERAL M. Ochoa R. Rivera C. Bustamante Maritza I. Rodríguez Agrociencias leaf analysis ferritic soil Coffea arabica plantation management phosphoric fertilization The experiment was carried out in areas of the Central Research Station of Coffee and Cocoa, located in Pinares de Mayarí, Holguín, at 650 m over sea level on a Dark Red Ferritic soil, planted with Coffea arabica L. var. Caturra Rojo at a distance of 2x1 m under the shade of pines ( Pinus cubensis Griceb). The effect of the phosphoric mineral fertilization (0, 50, 100, 150 and 200 kg P 2 O 5 .ha -1 .year -1 ), two fixed basal levels (180 and 240 kg.ha -1 .año -1 ) and K 2 O (150 and 225 kg.ha -1 .year -1 ) was studied on yield and contents of macrolements in leaves, during three productive cycles of coffee (1981-1987, 1988-1992 and 1993-1997). A randomized block design was used with factorial arrangement of 5 x 2 and five replicates, applying the rectilinear discontinuous pattern to recommend optimum doses. There was a significant answer of coffee to the applications of phosphoric fertilizer; therefore, during the whole period studied, plants required annual applications of 150 kg P 2 O 5 .ha -1 .year -1 in presence of superior doses of N and K 2 O, to achieve the best indexes of growth and yield, ranging 2.0-2.5 t coffee berries.ha -1 .year -1 . In absence of phosphoric applications, plants presented a very limited growth with acumulative yields of the order of 2.0 % of those obtained with 150 kg P 2 O 5 .ha -1 .año -1 . There was a strong relationship between yields and leaf contents of P (R 2 =0.997), recording values between 0.08 and 0.21 % associated with nutritional stages from scarce until appropriate, the values of 0.19-0.21 being indicators of a satisfactory nutritional stage. Also, yield was related with calcic nutrition but at a lesser intensity. 2000 artículo científico 1819-4087 https://www.redalyc.org/articulo.oa?id=193232232014 es http://www.redalyc.org/revista.oa?id=1932 Cultivos Tropicales application/pdf Instituto Nacional de Ciencias Agrícolas Cultivos Tropicales (Cuba) Num.1 Vol.21