Competitive effects of Ipomoea triloba L. with six corn varieties

Date

3-1979

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Beatriz L. Mercado

Co-adviser

E. C. Paller

Committee Member

R. P. Robles

Abstract

Ipomoea triloba L. at the density of 5 plants per pot delayed leaf formation and tassel emergence of corn (Zea mays L.). Plant height, fresh and dy weights and yield of six corn varieties were significantly reduced. Reduction in yield amounted to 75%, 66.15%, 52.05%,50.77%, 23.33%, and 17.07% for UPCA Var 5, UPCA Var 3, Phil. DMR Comp 2, respectively. Inter varietal differences in height and yield in both the weeded and unweeded groups were not significant, but for the fresh and dry weights significant, but for the fresh and dry weights significant differences were observed.

Of the six corn varieties studied, Phil. DMR 2 and UPCA Var 1 were the least and the most affected by the presence of weeds, respectively. Other varieties were intermediate. UPCA varieties were generally less competitive compared with the DMR varieties. The latter can tolerate 5 weeds per pot and compete with light, moisture and nutrients, particularly the Phil. DMR 2

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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