Optimum Sample Size for Weed Density and Biomass Determination in Mungbean (Vigna Radiata (L.) Wilczek) Weed Control Treatments

Date

10-1983

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Enrique C. Paller Jr.

Abstract

An experiment was conducted to: (a) compare the coefficients of variation for different sample sizes to obtaining weed density and biomass at two sampling times, (b) determine the optimum sample size for weed density and biomass determination in mungbean weed control treatments, (c) assess the effects of 3 weed control treatments on the grain yield of mungbean. The experiment was done at the Central Experiment Station, University of the Philippine at Los Baños, College, Laguna from June to September 1983.

The coefficient of variation of weed density and biomass varied weed control treatments, sampling times, and sample sizes.

Higher coefficient of variation in weed density and biomass was noted in the unweeded plots than those that were hand weeded at 15 days after emergence (DAE).

Sampling at harvest resulted in significantly lower coefficient of variation in weed density and biomass than sampling at 45 DAE.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1983 A42 M37

Document Type

Thesis

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