Issue Date
4-2002
Abstract
This paper discusses the potential of different botanical materials as toxicants against rodents and highlights the results of experiments identifying toxicity characteristics of various plant extracts. There were three plant materials given greater focus and these are Derris spp., Dioscorea hispida Dennst and Tinospora rumphii Boerl. The crude water extract of Derris was effective in killing rodents with LD of 324 mg/kg BW, while the chloroform extract of Dioscorea exhibits LD value of 549 mg/kg BW among ricefields rats, Rattus rattus mindanensis. The use of Tinospora as a potential rodent repellant in growing rice was also given emphasis. If sprayed on rice, the crude water extract of the stem has been established to greatly reduce rat damage. The protection provided by Tinospora was comparable to that of the conventional rodent control method (i.e., the use of surplus/sustained baiting with first generation anticoagulant). The effects of extracts of Vitex negundo, Ageratum conyzoides, Croton tiglium, Lantana camara, Datura metel, Ricinus communis and Gliricidia sepium were also studied.
Source or Periodical Title
Philippine Entomologist
ISSN
0048-3753
Volume
16
Issue
1
Page
11-23
Document Type
Article
Frequency
semi-annually
Physical Description
illustrations; tables
Language
English
Recommended Citation
Ocampo, Pablo P., "Development of vertebrate toxicants and repellants from indigenous plants for the use in crop protection" (2002). Journal Article. 5787.
https://www.ukdr.uplb.edu.ph/journal-articles/5787
En – AGROVOC descriptors
RODENTS; DERRIS; AGERATUM CONYZOIDES; PLANT EXTRACTS; PLANT PROTECTION; TOXICITY