Citation
Lim Tong Kwee, . and Nio Huat Lam, . Control of Phytophthora palmivora on orchids with some new systemic and standard fungicide. pp. 34-39. ISSN 0126-6128
Abstract
Three new sy stemic fungicides viz. Aliette (efosite-A l) R idomil (m eta la xyl) and Ridom il M Z (metalaxyl plus mancozeb) were screened against tw o standard fungicides viz. Terrazole (etridiazole) and\ D ifolatan (captafol) for prophylactic and therapeutic efficacy against Phytophthora palmivora on orchids. Terminal shoots of Aranda Christine hybrids were effectiv ely pro tected from Phytophthora in fectio n w hen sprayed w ith m eta la xyl at 0.05 a.i. metalaxyl-m ancozeb mixture at 0.15 a.i. and captafol at 0.2 a.i. three days before artificial inoculation. E tridiazole and efosite-A l b oth at 0.1 a.i. did not give adequate protection. M etalaxyl (0.05 a.i.) and its m ixture with m ancozeb (0.15 a.i.) retarded significantly disease d evelo p m en t b y Phytophthora when used as a curative spray. E tridiazole (0.1 a.i.) and efo site-A l (0.1 a.i.) gave moderate therapeutic control while captafol gave no therapeutic control. No phytoxicity was observed w ith R id o m il MZ Terrazole and A lie tte up to concentrations o f 0.5o a.i. 0.4 a.i. and 0.8 a.i. respectively. The R id o m il products A lie tte and Terrazole exh ib ited similar rates of inhibition o f linear exte n sio n o f P. palmivora b u t d iffered in the degree of in vitro fu ngi toxicity . The R idomil products and Terrazole had ED so values o f less than 1 p g /m I w hile difolatan was relatively less toxic.
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Abstract
Three new sy stemic fungicides viz. Aliette (efosite-A l) R idomil (m eta la xyl) and Ridom il M Z (metalaxyl plus mancozeb) were screened against tw o standard fungicides viz. Terrazole (etridiazole) and\ D ifolatan (captafol) for prophylactic and therapeutic efficacy against Phytophthora palmivora on orchids. Terminal shoots of Aranda Christine hybrids were effectiv ely pro tected from Phytophthora in fectio n w hen sprayed w ith m eta la xyl at 0.05 a.i. metalaxyl-m ancozeb mixture at 0.15 a.i. and captafol at 0.2 a.i. three days before artificial inoculation. E tridiazole and efosite-A l b oth at 0.1 a.i. did not give adequate protection. M etalaxyl (0.05 a.i.) and its m ixture with m ancozeb (0.15 a.i.) retarded significantly disease d evelo p m en t b y Phytophthora when used as a curative spray. E tridiazole (0.1 a.i.) and efo site-A l (0.1 a.i.) gave moderate therapeutic control while captafol gave no therapeutic control. No phytoxicity was observed w ith R id o m il MZ Terrazole and A lie tte up to concentrations o f 0.5o a.i. 0.4 a.i. and 0.8 a.i. respectively. The R id o m il products A lie tte and Terrazole exh ib ited similar rates of inhibition o f linear exte n sio n o f P. palmivora b u t d iffered in the degree of in vitro fu ngi toxicity . The R idomil products and Terrazole had ED so values o f less than 1 p g /m I w hile difolatan was relatively less toxic.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Phytophthora palmivora |
| AGROVOC Term: | Fungicides |
| AGROVOC Term: | Metalaxyl |
| AGROVOC Term: | Difolatan |
| AGROVOC Term: | Therapeutic substances |
| AGROVOC Term: | Disease control |
| AGROVOC Term: | Shoots |
| AGROVOC Term: | Pathogens |
| AGROVOC Term: | Ornamental orchids |
| AGROVOC Term: | In vivo experimentation |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 28 Apr 2025 00:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/22877 |
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