Effect of 2, 4-D on different growth stages of Cleome rutidosperma DC as influenced by rate application, formulation and surfactant

Date

8-1979

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

Two pparts of experiments were conducted at the Weed Science Section, Department of Agronomy, University of the Philippines at Los Baños, to determine the effect of 2, 4-D (2,4-dichlorophenoxyacetic acid) on the different growth stages of spindletop (Cleomerutidosperma DC) as influenced by rate of application, formulation, and the use of surfactant.

Spindletop can be effectively controlled with 2,4-D, only at the 2 to 4 leaf stage at application rates of 1.0 and 2.0 kg/ha. The ester formulation of 2,4-D was more effective than the amine formulation. Both formulations failed to provide effective control of the weed even at higher rates (1.0 and 2.0 kg/ha) when applied at the 8 leaf stage and beyond.

No significant differences in shoot dry weights of C. rutidosperma were observed with stages of growth, rate application and the use of surfactant because the treatments were applied to relatively older plants which were tolerant to the herbicide.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1979 A42 L39

Document Type

Thesis

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