The effect of nitrogen fertilization and spacing on cowpea

Date

4-1968

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Jose R. Deanon Jr.

Co-adviser

Jose M. Soriano

Abstract

Two experiments were undertaken to evaluate the yield response of cowpea to various plant population and nitrogen levels under Los Baños conditions.

Nitrogen fertilization was found to be effective in improving the fresh pod as well as the dry seed yields of the Alabama Crowder variety of cowpea. It was apparent, however, that applying more than 50 kilograms nitrogen per hectare did not give a proportional increase in yield.

The widest hill spacing of 20 centimeters in the row gave vigorous, big and more productive plants than the closer spacing. The expected high total yield from planting closer (higher population) was not realized in this experiment so that the wider spacing can be said to be a more economical rate.

The differences in the plant responses to the treatments between the two planting seasons was attributed to the relative amounts of rainfall, sunlight and the prevalence of insect pests, diseases and weeds.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1968 A42 T59

Document Type

Thesis

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