Effects of various organic emulsifiers on crop growth and weed control
Issue Date
12-2017
Abstract
The research aims to determine the promotional effects of various organic emulsifies (sugar bubble, natural detergent, loess sulfur, brown rice vinegar, and powder soap) on lettuce, Chinese cabbage, radish, cucumber, and barley; investigate whether the increase in crop growth by the emulsifiers is related to photosynthetic efficiency (quantum yield), chlorophyll and carotenoid contents; and to evaluate the herbicidal effects of the organic emulsifiers on common lambs quarters (Chenopodium album L.), curly dock (Rumex crispus L.), dandelion (Taraxacum officinale L.), and barnyard grass (Echinochloa crus-galli (L.) P. Beauv.). Plant height and shoot fresh weight in the radish, Chinese cabbage, and lettuce increased from 15-51 % using sugar bubble, 11-49% using brown rice vinegar, and 8-48% using natural detergent at 1, 3, 5, and 10% concentrations in the greenhouse. Plant height and shoot fresh weight of cucumber and barley did not increase with emulsifier treatment. The increase in crop growth by the emulsifiers was not related to photosynthetic efficiency (quantum yield), chlorophyll and carotenoid contents. Germination rate, shoot and root growth in cucumber and barley were 100% inhibited by brown rice vinegar, powder soap, and loess sulfur at 3% and 5% concentrations in Petri dish bioassays. Shoot and root growth in barley and cucumber were also 100% inhibited by brown rice vinegar at 3% and 10% concentrations, respectively, and loess sulfur at 10% and 5%, respectively in soil experiments. Shoot and root growth in common lambs quarters, curly dock, and dandelion were 100% inhibited by 3% concentrations of all emulsifiers tested (sugar bubble, brown rice vinegar, powder soap, and loess sulfur) in Petri dish bioassays. In a greenhouse study, curly dock was 28-30% and 47-100% controlled by foliar applications of brown rice vinegar and loess sulfur, respectively, at 3, 5, and 10% concentrations, and dandelion was 46-55% controlled by loess sulfur at 5% and 10% concentrations. The results of this study suggest that organic emulsifiers tested can be used to increase crop growth and provide in-row weed control for transplanted vegetable crops.
Source or Periodical Title
Philippine Journal of Crop Science
ISSN
0115-463X
Volume
42
Issue
3
Page
63-70
Document Type
Article
Physical Description
graphs; tables
Language
English
Subject
Weed control
Recommended Citation
Jang, S. J.; Kim, K. R.; Yun, Y. B.; and Kuk, Y. I., "Effects of various organic emulsifiers on crop growth and weed control" (2017). Journal Article. 4552.
https://www.ukdr.uplb.edu.ph/journal-articles/4552
En – AGROVOC descriptors
VEGETABLE CROPS; WEEDS; WEED CONTROL; EMULSIFIERS; ORGANIC AGRICULTURE; GROWTH; APPLICATION METHODS