Abstract:
The experiment was conducted at Plant Physiology Department, Rice Research Institute, Dokri,
Larkana Pakistan to evaluate the efficacy of weedicides against Rice crop weeds. Different
sedges Cyprus rotundus, C, difformus, C, iria, F. milliacea and Scripus species. Grasses
Echinochloa colona, E. Crus galli, Leptochloa chinensis and Paspalum distichu, broad leave
weeds Sphenoclea zeylanica, Ipomoea aquatic, Ammannia coccinea and Nymphaea nouchhali
were recorded in rice crop field. Results shown that the all the weedicides performed better than
control (Un-treated). Weed population density was reduced significantly Sedges, grasses and
broad leave weeds were controlled better by T-03 Pyranex Gold 60WDG followed by Refit 50%
EC, (84%, 85% and 76.25, and 80%, 77.50 and 71.25%) respectively. Lowest control against all
weeds were recorded (42.50%) in T-07 Machete 60%EC 800ml/Acre, while maximum weed
control (81.3%) was observed in T-03 Pyranex Gold 60WDG (100gms/Acre). Highest yield
increase 2950kgs/A (131.11%) was recorded in T-03 Pyranex Gold 60WDG followed by T-06
Refit 50% EC, 2825kgs/A (125.55%) compared with Control 2250kgs/A. Due to weed
infestation, late maturity was observed in T-08 Control (97 days) while all treated plots were
mature in 80 to 87 days after transplanting. Highest plant height (104cm) was recorded in T-06
Refit 50% followed by T-01 Sun Star Gold 60WP. Highest tiller per plant were observed 24 in
T-03 Pyranex Gold 60WDG, while control recorded minimum number of tillers 18/P. Maximum
yield was recorded 2950kg/A in T-03 Pyranex Gold 60WDG followed by T-06 Refit 50%EC
control yield was lowest 2250kgs/A among all treatments |
