Effect of non-herbicidal concentrations of 2,4-D amine on growth, flowering and yield of soybean

Date

3-1984

Degree

Bachelor of Science in Agriculture

Major Course

Major in Agronomy

College

College of Agriculture and Food Science (CAFS)

Adviser/Committee Chair

Joven S. Lales

Abstract

Two pots experiments were conducted separately to determine the effects of non-herbicidal concentrations of 2,4-D Amine on soybean. The experimental design used in both experiments was a 3 x 4 factorial in a completeley Randomized Design (CRD) with additional treatment. Three concentrations were used, namely: 1 x 10 to the -5M, 1 x 10 to the -6M and 1 x 10 to the -7M.

Two factors involved in the first experiment correspond with four durations of soaking and three concentrations of 2,4-D Amine. In the second experiment, these factors correspond with times of application and the three concentrations.

Among the parameters tested, only the number of days from planting to first flower emergence, pod set and seed yield were affected. Plant height at maturity and total number of nodes per plant were not affected. Pre-plant soaking of soybean seeds caused a delay in first flower emergence, enhanced pod set but failed to increase seed yield. On the other hand, foliar application did not delay or advance the day of first flower emergence. However, it increased the pod set percentage, but inconsistently increased seed yield.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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