Vol. 44 No. 4 (1960)

Published October 1, 1960

https://doi.org/10.46429/jaupr.v44i4

Vol. 44, No. 4, October 1960

Articles

James P. Kramer, Luis F. Martorell

163-165

First Records for the Rice Plant Hopper, Sogata orizicola Muir, in Puerto Rico (Homoptera: Fulgoridea: Delphacidae)

https://doi.org/10.46429/jaupr.v44i4.13804

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George N. Wolcott

166-172

Efficiency of Ladybeetles (Coccinellidae: Coleoptera) in Insect Control

https://doi.org/10.46429/jaupr.v44i4.13805

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Servando Silva, Fernando Abruña, José Vicente-Chandler

173-175

The Effect of Yields on Picking Efficiency in Coffee Production

https://doi.org/10.46429/jaupr.v44i4.13806

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D. S. Boyce

176-193

The Determination of Moisture in Parchment Coffee and Green Coffee Beans with a Dielectric-type Moisture-Meter

https://doi.org/10.46429/jaupr.v44i4.13807

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George Samuels

194-207

The Influence of Fertilizers on Cigar-Filler Tobacco Quality

https://doi.org/10.46429/jaupr.v44i4.13808

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A. Sotomayor-Ríos, J. Vélez-Fortuño, R. Woodbury, K. F. Schertz, A. Sierra-Bracero

208-220

Description and Cytology of a Form of Signal Grass (Brachiaria brizantha Stapf.) and its Agronomic Behavior Compared to Guinea Grass (Panicum maximum Jack.)

https://doi.org/10.46429/jaupr.v44i4.13809

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Gilberto García Monge

221-235

Cation-Exchange Equilibria in a Carboxylic Cation Exchanger and in Attapulgite Clay

https://doi.org/10.46429/jaupr.v44i4.13810

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Agripino Pérez López

236-250

Relation of Earliness to Some Plant Characters in the Tomato

https://doi.org/10.46429/jaupr.v44i4.13811

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Research Notes

José Adsuar

251-253

FIELD BEHAVIOR OF CERTAIN SWEETPOTATOES TO MOSAIC IN PUERTO RICO

https://doi.org/10.46429/jaupr.v44i4.13812

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