COMPETITIVE ABILITY OF DIFFERENT WHEAT VARIETIES AGAINST Phalaris minor (Retz.) IN RELATION TO CROP GEOMETRY
| dc.contributor.author | Neeraj Sharma | |
| dc.date.accessioned | 2017-04-11T09:51:45Z | |
| dc.date.available | 2017-04-11T09:51:45Z | |
| dc.date.issued | 2011 | |
| dc.description.abstract | A field investigation was conducted at Students’ Research Farm, Deptt. of Agronomy, Punjab Agricultural University, Ludhiana during rabi 2010-11 to study the competitive ability of different wheat varieties against Phalaris minor (Retz.) in relation to crop geometry. The experiment was conducted using Split Plot Design with four replications. Three spacings (15cm, 22.5cm and 22.5cm × 22.5cm) and two weed control methods (sprayed and unsprayed) were kept in main plots and four wheat varieties viz: PBW 550, DBW 17, PBW 621 and WH 542 were kept in sub plots. The weed count (118 and 130/m2) and weed dry weight (22.6 and 24.0q/ha) was found to be significantly less at harvest under bi-directional (22.5cm × 22.5cm) sowing and closer (15cm) sowing, respectively as compared to normal 22.5cm sowing which resulted in increased grain yield i.e. 56.5q/ha and 52.5q/ha in bidirectional and closer sowing respectively. The plots sprayed with herbicide showed significantly less weed count (112/m2) and weed dry matter (21.5q/ha) at harvest which resulted in increased grain yield in sprayed plots (57.9 q/ha) as compared to unsprayed plots (45.3q/ha). Among four wheat varieties, PBW 621 and PBW 550 were at par with each other in terms of grain (57.1 and 55.4 q/ha) and straw (86.5 and 78.8 q/ha) yield due to more number of effective tillers/m2 (445 and 416), ear length (8.7 and 7.7cm), numbers of grains per ear (53.7 and 50.5) and thousand grain weight (39.1 and 38.2 g) respectively. The weed count (120 and 126/m2) and weed dry matter (22.4 and 23.2 q/ha) was found to be significantly less at harvest for wheat variety PBW 621 and PBW 550, respectively due to more leaf area index and number of tillers/m2 recorded at different growth stages of wheat and proved more competitive against Phalaris minor as compared to DBW 17 and WH 542. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810007135 | |
| dc.keywords | Crop geometry, weed control, wheat (Triticum aestivum L.) varieties and Phalaris minor. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Punjab Agricultural University, Ludhiana | en_US |
| dc.sub | Botany | en_US |
| dc.subject | null | en_US |
| dc.theme | Agronomy | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | COMPETITIVE ABILITY OF DIFFERENT WHEAT VARIETIES AGAINST Phalaris minor (Retz.) IN RELATION TO CROP GEOMETRY | en_US |
| dc.type | Thesis | en_US |