"Effect of 2, 4-D Amine and 2, 4 -D Ester on Sphenoclea Zeylanica Gaertn. at Different Growth Stages"
Date
5-1980
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
The effect of 2,4-D amine and 2,4-D ester on various growth stages of Sphenoclea zeylanica. Was studied in a pot experiment conducted at the Weed Science Division, Department of Agronomy, University of the Philippines at Los Baños, to obtain information in establishing important guidelines for its effective control.
Plants sprayed at 5-8 and 8-11 leaf stages exhibited greater percent reduction in shoot and root dry weights than those applied with the herbicide at the later stages.
The weed seedlings treated with ester formulation had significantly lower shoot dry weight than those treated with the amine formulation.
Plants that were sprayed with the herbicide at the 5-8 and 8-11 leaf stages exhibited more injury than those applied at the 12-16 and 16-22 leaf stages at comparable herbicide rates.
The results of the experiment showed that S. zeylanica can be controlled at early stage of growth with the recommended rate for the control of broadleaf weed in lowland rice. At the later stages, the required rates may result to injury to crop.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
LG 993.5 1980 A42 P34
Recommended Citation
Padilla, Hilario J., ""Effect of 2, 4-D Amine and 2, 4 -D Ester on Sphenoclea Zeylanica Gaertn. at Different Growth Stages"" (1980). Undergraduate Theses. 9572.
https://www.ukdr.uplb.edu.ph/etd-undergrad/9572
Document Type
Thesis