Ber germplasm screening and management of black leaf spot disease under Eastern U.P. conditions.
Department of Horticulture, N.D. University of Agriculture & Technology, Kumarganj, Faizabad, India.
DOI: https://doi.org/10.37855/jah.2003.v05i01.12
Key words: carbendazim, chemical control, copper oxychloride, disease resistance, fungal diseases, fungicides, germplasm, mancozeb, neem extracts, non wood forest products, plant disease control, plant diseases, plant pathogenic fungi, plant pathogens
Abstract: Forty ber (Zizyphus mauritiana [Ziziphus mauritiana]) accessions, grown in Faizabad, Uttar Pradesh, India, were screened against black leaf spot disease (caused by Isariopsis indica var. ziziphi) during 1997-98 to 1999-2000 to determine the resistant source(s) for crop improvement. Tikri during 1997-98 and 1999-2000; Seedless during 1998-99; and ZG-3 during 1999-2000 were found immune. Guli, Seedless and Ber selection-5 during 1997-98; Guli, Darackhi-2, Ber selection-2, 3, 4 and 5 during 1998-99; and Jalandher, Kali, Bagwadi, Banarasi Peondi, Illaichi, Villaiti, Sanour-3, Chhohara, Katha, Seedless, Darakhi-2 and Ber selection-5 during 1999-2000 were found resistant. Other accessions showed moderately susceptible to susceptible reaction against the disease. An experiment on the management of the disease was conducted with ber cv. Gola (a susceptible cultivar). Single spraying of fungicides (0.1% carbendazim, 0.2% mancozeb and 0.2% copper oxychloride) and 3.0% neem [Azadirachta indica] powder (Nimuri) at 10 lit
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