All the cultivated Brassica species exhibited powdery mildew severity with highest (43.2%) on juncea followed by B. rapa (28.0%) which is widely in India. Yield losses from 10-90 per cent reduction 6.47 oil content have been estimated different species. Hence, present study was carried out to evaluate oils manage disease and aphids an organically grown mustard crop. Five (castor, groundnut, sun...

The objective of the present study was to examine chemical compositions Salvia coccinea oleoresins prepared in methanol and petroleum ether. GC-MS analysis methanolic oleoresin (SCMO) ether (SCEO) resulted identification 15 12 constituents, comprising 84.7 81.2% total composition, respectively. Both SCMO SCEO varied their composition terms quantity, namely, oleic acid (22.3-25.9%), palmitic (8....

increased nitrogen applications to crops influence plant-herbivore interactions and potentially increase herbivore population growth.in this research, the impact of nitrogen fertilizations on nutritional quality of three canola (brassica napus l.) cultivars (zarfam, okapi and modena), and, consequently, the performance of mustard aphids, lipaphis erysimi kalt., on them were investigated under g...

a two-year field study was conducted at punjab agricultural university, ludhiana, india, to study the relative abundance of mustard/turnip aphid, lipaphis erysimi (kaltenbach) (hemiptera: aphididae) and the associated resident natural enemies on 10 different rapeseed-mustard genotypes which included: brassica juncea: rh 7846, rh 9501, rk 9501, jmm 927, purple mutant; b. napus: hyola pac 401 (hy...

in this research, population fluctuation of canola aphids and their natural enemies were investigated during 2007-2008. random samples of 50 plants were taken twice a week. mustard aphid (lipaphis erysimi kalt.), green peach aphid(myzus persicae sulzer)and cabbage aphid (brevicoryne brassicae l.) were recorded on canola. however,the mustard aphid with relative frequency of 79% was dominant. the...