Additional Evidence on the Applicability of the New Fertilizer-Yield Relation
https://doi.org/10.46429/jaupr.v51i2.11459
B. G. Capó
Capó, B. G. (1967). Additional Evidence on the Applicability of the New Fertilizer-Yield Relation. The Journal of Agriculture of the University of Puerto Rico, 51(2), 97–120. https://doi.org/10.46429/jaupr.v51i2.11459
A new fertilizer-yield equation recently discovered by the author was used to describe the relation between the applications of nitrogen-, phosphorus-, potassium-, calcium-, and magnesium-bearing materials and the yields of sugarcane and corn in 34 experiments carried out in various regions of Puerto Rico near Isabela, Gurabo, Patillas, Lajas, and Río Piedras. The equation under study satisfactorily fitted such fertilizer-yield data, even in cases where the fertilizer-yield equation suggested by other workers do not apply. The general applicability of the new fertilizer-yield equation even in cases of certain abnormal data has been noted. From the data studied, it seems that, as concerns the production of sugarcane in soils similar to those used in the above-mentioned experiments, there is more need to keep the available soil nitrogen and magnesium contents as near as possible to their optimum equilibrium values than is true of phosphorus, potassium, and calcium. In corn production the equilibrium of the available nitrogen, phosphorus, and magnesium seems to be more important than that of the available potassium and calcium.
B. G. Capó, Leaf Composition as an Index of the Availability of Nutrients in the Soil , The Journal of Agriculture of the University of Puerto Rico: Vol. 54 No. 4 (1970): Vol. 54, No. 4, October 1970
M. A. Lugo-López, B. G. Capó, F. Aróstegui, A. Riollano, Intercropping sugarcane with food crops , The Journal of Agriculture of the University of Puerto Rico: Vol. 37 No. 3 (1953): Vol. 37, No. 3, July 1953
Mariano Antoni, B. G. Capó, A COMPUTER PROGRAM FOR THE ANALYSIS OF EXPERIMENTAL DATA , The Journal of Agriculture of the University of Puerto Rico: Vol. 62 No. 4 (1978): Vol. 62, No. 4, October 1978
M. A. Lugo-López, B. G. Capó, The Effect of Weather and Climate on the Sucrose Content of Sugarcane , The Journal of Agriculture of the University of Puerto Rico: Vol. 38 No. 4 (1954): Vol. 38, No. 4, October 1954
G. Samuels, P. Landrau, Jr., B. G. Capó, Influence of Fertility Levels on the Varietal Response of Sugarcane , The Journal of Agriculture of the University of Puerto Rico: Vol. 40 No. 3 (1956): Vol. 40, No. 3, July 1956
M. A. Lugo-López, Pablo Landrau, Jr., B. G. Capó, The Response of Hegari Sorghum to Lime Applications at Various Levels , The Journal of Agriculture of the University of Puerto Rico: Vol. 42 No. 4 (1958): Vol. 42, No. 4, October 1958
C. G. Moscoso, B. G. Capó, Characteristic (Discriminant Function) Indices of Chironja, Orange and Grapefruit , The Journal of Agriculture of the University of Puerto Rico: Vol. 57 No. 1 (1973): Vol. 57, No. 1, January 1973
J. A. Bonnet, B. G. Capó, A. Riera, Lack of response of sugarcane to applications of phosphorus in Puerto Rico , The Journal of Agriculture of the University of Puerto Rico: Vol. 30 No. 3 (1946): Vol. 30, No. 3, July 1946
M. A. Lugo-López, B. G. Capó, The Effect of Elevation on the Sucrose Content of Sugarcane , The Journal of Agriculture of the University of Puerto Rico: Vol. 38 No. 3 (1954): Vol. 38, No. 3, July 1954
Luis A. Gómez, José Lería Esmoris, B. G. Capó, Fertilizer requirements of coffee grown on Catalina clay in Puerto Rico , The Journal of Agriculture of the University of Puerto Rico: Vol. 30 No. 3 (1946): Vol. 30, No. 3, July 1946