Effect of Cultivars and Herbicides on Weed Growth and Yield of Boro Rice (Oryza sativa L.)

Pramod Kumar, Yashwant Singh and U. P. Singh

  • Page No:  59 - 62
  • Published online: 07 Mar 2012

  • Abstract
  •   pkr_ran@rediffmail.com

The field experiment was conducted during the boro seasons of 2008-09 and 2009-10 on clay loam soil of Agricultural Research Farm at Banaras Hindu University (BHU) campus, Varanasi, India to test the efficacy of herbicides under different boro rice cultivars. All the herbicidal treatments were significantly superior to unweeded con­trol. Weed count and dry matter under ‘Prabhat’ was lower than that with other two cultivars, viz. ‘Gautam and ‘Krishna Hamsa’. Weed control efficiency with ‘Prabhat’ was higher than other two cultivars. Significantly higher grain yield of 4149.07 kg ha-1 was obtained in ‘Gautam’ cultivar. Pretilachlor @ 1.0 kg (pre emergence) fb (followed by) azimsulfuron @ 35 g a.i. ha-1 at 15 DAT with grain yield of 4353.51 kg ha-1 was significantly superior to ethoxysulfuron @ 18 g ai ha-1+fenoxaprop @ 56 g ai ha-1 at 15 DAT as well as pyrazosulfuron @ 20 g ai ha-1 (pre-emergence) fb bispyribac @ 25 g ai ha-1 at 25 DAT and was statistically similar to hand weeding twice at 30 and 50 DAT. Among herbicidal treatments, the maximum weed control efficiency of 62.87% and 63.37% in pretilachlor fb azimsulfuron and 84.02% in ethoxysufuron+fenoxaprop were recorded for broad leaved, grasses and sedges, respectively. ‘Gautam’ cultivar with highest net return of ` 24898.94 ha-1 and benefit cost ratio of 1.19 and pretilachlor fb azimsulfuron with net return of ` 27461.32 ha-1 and benefit cost ratio of 1.32 were most profitable among cultivars and herbicidal treatments, respectively.

Keywords :   Boro rice, herbicides, weed free, unweeded control, cultivars


Cite

1.
Kumar P, Singh Y, Singh UP. Effect of Cultivars and Herbicides on Weed Growth and Yield of Boro Rice (Oryza sativa L.) IJBSM [Internet]. 07Mar.2012[cited 8Feb.2022];3(1):59-62. Available from: http://www.pphouse.org/ijbsm-article-details.php?article=189

People also read

Full Research

Study of Genetic Divergence in Barnyard millet (Echinochloa frumentacea (Roxb.) Link) Germplasm

Rinkey Arya, Arun Bhatt and Vineet Kumar

Barnyard millet, genetic divergenc, germplasm, mahalanobis D2

Published Online : 07 Apr 2018

Full Research

Effect of Integrated Weed Management Practices on Weed Growth and Productivity of Pigeonpea (Cajanus cajan)

Guriqbal Singh and H. K. Virk

Imazethapyr, paraquat, pigeonpea, pendimethalin, weed control efficiency

Published Online : 07 Jun 2018

Research Article

Fruit Powder as Natural Preservatives for Raw Chevon

G. Mahapatra and S. Biswas

Minced chevon, starfruit powder, guava powder, anti-oxidant, anti-microbial

Published Online : 21 Jun 2019