RESPONSE OF RICE AND ACCOMPANIED WEEDS TO HERBICIDES APPLICATION RATES | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 45, Issue 6, September 2014, Pages 641-650 | ||
| Authors | ||
| S. H. A. Al-Ziaadee; A. H. A. Rashid; S.F. H. Al-Essawi; A. Y. Hadi; J. A. Alawy | ||
| Abstract | ||
| A field trial was carried out at Mishkab Rice Research Station, Al-Najaf Al-ashraff governorate during the summer seasons of 2012 and 2013 to investigate the response of three cultivers of rice (Anber-33, Yasamin and Program-4) and accompanied weeds for different application of herbicides (Nominee and Renbo with of recommended and 75% application of recommendation) and weedy. The design used was RCBD with split plot arrangement of three replicates. Number of weeds was significantly reduced by 20.33 and 5.00 plant.m-2 in Anber -33 which gave the highest average of plant height valuses 132.90 and 116.76 cm in both season, respectively, as compared with two cultivers Yasamin and program-4. gave cultiver Yasamin highest grain yield, 4314 and 4178 kg.h-1 in both season, respectively. Herbicide treatment Renbo 75% gave lowest valuses weed density, 17.44 and 6.22 plant.m-2 of 30 day after sowing. gave two herbicides (Renbo 100% and Nominee 100%) highest average of number panical and grain yield, 428.20 and 462.30 panical. m-2 , 4567 and 3992kg.h-1 in both season ,respectively, as compared with weedy treatment gave lowest valuses 270.40 and 363.90 panical. m-2, 1977 and 2323 kg.h-1.It can be concluded that cultiver anber-33 was the best in weed competition, while cultiver Yasamin was more responsive for herbicide. Were herbicide concentration superior in giving the lowest weed density and increasing in yield and its components compared with the weedy treatment. | ||
| Keywords | ||
| Rice cultivars; Competition of weeds; Plant height; Panical number; Grain yield | ||
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