Vol. 53 No. 1 (1969): Vol. 53, No. 1, January 1969

Vol. 53 No. 1 (1969)

Published January 1, 1969
https://doi.org/10.46429/jaupr.v53i1
Vol. 53, No. 1, January 1969

Articles

George A. Schaefers
1-13
Aphid Vectors of the Papaya Mosaic Viruses in Puerto Rico
https://doi.org/10.46429/jaupr.v53i1.11172
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G. Samuels, Alex G. Alexander
14-27
Influence of Variable Manganese and Silicon on the Nutrition, Sugar Production, and Enzyme Activity of Immature Sugarcane
https://doi.org/10.46429/jaupr.v53i1.11173
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Reinaldo Calero, Parimal Choudbury, George E. Pringle
28-32
An Analysis of Labor Demand and Supply in the Sugarcane Industry of Puerto Rico
https://doi.org/10.46429/jaupr.v53i1.11174
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E. Hernández Medina, M. A. Lugo López
33-40
Effect of Minor Nutrient Elements and Magnesium Upon the Growth, Development, and Yields of Plantains
https://doi.org/10.46429/jaupr.v53i1.11175
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Alex G. Alexander
41-56
Comparative Studies of Yeast and Sugarcane Invertase
https://doi.org/10.46429/jaupr.v53i1.11176
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M. A. Lugo López, Raúl Pérez Escolar
57-60
A Mathematical Approach to Evaluating the Influence of Various Factors on the Stability of Aggregates in Vertisols
https://doi.org/10.46429/jaupr.v53i1.11177
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R. Abrams, J. Vélez Fortuño, J. López García
61-66
The Interaction of Variety and Environment in Pigeonpea (Cajanus cajan) Trials
https://doi.org/10.46429/jaupr.v53i1.11178
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M. A. González, E. Díaz Negrón, A. R. Sandoval
67-74
Studies on the Stability of Fried Plantain Chips
https://doi.org/10.46429/jaupr.v53i1.11179
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Research Notes

Owen H. Wheeler, Elba Díaz de Osborne
75-76
EFFECT OF y IRRADIATION ON LEMON OIL AND LEMON-GRASS OIL
https://doi.org/10.46429/jaupr.v53i1.11180
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Delfín D. de León, Frank Kolodziej
77-78
HELMINTH PARASITES OF CATS
https://doi.org/10.46429/jaupr.v53i1.11181
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