Performance of cowpea (vigna unguiculata L. walp) under different cropping systems and fertilizer options

Date

4-1992

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Nestor R. Lawas

Abstract

An experiment was conducted to 1) evaluate cowpea 2) determine the effects of various fertilizer options on the yield, yield components and some growth parameters of cowpea, and 3) determine the best treatment combination on the basis of economic yield and cost and return analysis.

Generally, taller plants were obtained in fertilized plots at 28, 42, and 56 DAS. Cropping system, on the other hand, also had a significant effect on plant height with taller plants in both mixed cropping system at 42 DAS, while shorter plant height were observed in relay at 56 DAS. These variations were attributed to intraspecific and interspecific competition. Similar results as to the effect of fertilizer options on plant height were obtained for both Leaf Area Index (LAI) and Dry Matter (DM). LAI was also affected by cropping system with a higher value in monocropping, while there was no significant differences in days to flowering for all treatments. Maturity date was delayed in relay cropping.

A main and interaction effect existed in yield and some yield components of cowpea, such as the number of pods per plant and weight of 100 seeds. As compared with inoculated or unfertilized plots, higher yields were obtained when fertilized with either chemical, compost or green manure, Higher total productivity was gained by relay cropping, followed closely by intercropping due to a higher net income under all cropping systems. The two organic sources, on the otherhand, reduced material cost specifically that of chemical fertilizers.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1992 A42 V37

Document Type

Thesis

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