Economic evaluation of fungicides for leaf blight (Alternaria alternata) control in the transplanted crop of 'Shivalik' menthol mint (Mentha arvensis)

Citation
A. Kalra et al., Economic evaluation of fungicides for leaf blight (Alternaria alternata) control in the transplanted crop of 'Shivalik' menthol mint (Mentha arvensis), I J AGR SCI, 71(7), 2001, pp. 460-462
Citations number
9
Categorie Soggetti
Agriculture/Agronomy
Journal title
INDIAN JOURNAL OF AGRICULTURAL SCIENCES
ISSN journal
00195022 → ACNP
Volume
71
Issue
7
Year of publication
2001
Pages
460 - 462
Database
ISI
SICI code
0019-5022(200107)71:7<460:EEOFFL>2.0.ZU;2-U
Abstract
A study was conducted during rainy (kharif) season of 1997,1998 and 1999 to evaluate tile different fungicides for control of leaf blight of menthol m int (Mentha arvensis L.) caused by Alternaria alternata (Fr.) Keissler and to determine most economical optimal application schedule. Chlorothalonil p rovided maximum disease control, though the other fungicides mancozeb, thio phanate-methyl and copper ox chloride were also effective. The chlorothalon il-sprayed plots gave 45% greater yield of essential oil compared with the unsprayed plots. Three applications of chlorothalonil at 15-day intervals p rovided economically acceptable disease control with maximum increase (40%) in essential oil yields and total net returns (Rs 7 700).