International Journal of Agricultural Sciences

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Weed Dynamics and Yield as Influenced by Various Weed Control Methods and Fertility Levels in Soybean


Affiliations
1 Department of Agronomy, Junagadh Agriculture University, Junagadh (Gujarat), India
     

   Subscribe/Renew Journal


The experiment was conducted during Kharif season of 2006 at Junagadh (Gujarat) to study the weed dynamics and yield as influenced by various weed control practices with different fertility levels in soybean [Glycine max (L.) Merril]. Results indicates that at 20 DAS the treatment W1 (Pre-emergence pendimethalin @ 0.5 kg ha-1 + HW and IC at 30 DAS) recorded lowest number of monocots, dicots and sedges weeds next to W5 (Weed free upto 60 DAS through hand weeding). Similarly at 40 and 60 DAS the treatment W3 (Post-emergence imazethapyr @ 75 g ha-1 at 25 DAS + HW and IC at 45 DAS) also reported minimum number of weeds next to W5. The lowest dry weight of weeds was recorded under treatment W5 followed by W4 and W3. Application of 40:80:40 kg NPK ha-1 recorded significantly higher values of weed count and total dry weight of weeds and grain yield compared to other levels. The treatment W4 (2 HW + 2 IC at 20 and 40 DAS) was found at par with treatment W5 in respect of grain yield.

Keywords

Soybean, Weed Count, Pendimathalin, Quizalofop-Ethyl, Imazethapyr, Fertility Levels.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Arya, M.P.S., Singh, R.V. and Singh, G. (1994). Crop weed competition in soybean (Glycine max L.) with special reference to Oxalis lantifolia. Indian J. Agron., 36 (1):136-139.

  • Bandiwaddar, T.T. and Itnal, C.J. (1998).Weed management in soybean in black soils of northern transitional track of Karnataka. Karnataka J. Agric. Sci., 11(3):599-602.

  • Bhan, M. and Kewat, M.L. (2002). Economics of herbicidal weed control in soybean. Indian J. Weed Sci., 34(1&2):139-140.

  • Dubey, M.P. (2004). Grain yield and chemical properties of soil as affected by soyben genotypes and fertility levels. Biodiversity and suatainable utilization of biological resources. Proceedings of International conference, Sagar, Madhya Pradesh., pp. 209-214.

  • Kumar, Rakesh, Thakaral, S.K. and Kumar, Satish (2004). Response of green gram to weed control and fertilizer application under different planting systems. Indian J. Weed Sci., 36 (1/2):131-132.

  • Nayak, M.P., Vyas, M.D. and Mandloi, K.S. (2000). Efficacy of pendimethalin in soybean (Glycine max. L ). Indian J. Agron., 45 (1):162-165

  • Rao,V.S.(1983). Principles of weed science. pp: 2-3, Oxford and IBH Publ.Co., NEW DELHI, INDIA.

  • Sonawane, D.A. and Sabale, R.N. (2003). A study on the methods of weed control in soybean. J. Maharashtra Agric. Univ., 28 (1):92-93

  • Suzuki, K., Hirata, H., Ikai, T. and Saketa, G. (1991). Development of a selective herbicide, quizalofop-ethyl. J. Pestic. Sci., 16(2):315-323.


Abstract Views: 348

PDF Views: 0




  • Weed Dynamics and Yield as Influenced by Various Weed Control Methods and Fertility Levels in Soybean

Abstract Views: 348  |  PDF Views: 0

Authors

P. S. Deore
Department of Agronomy, Junagadh Agriculture University, Junagadh (Gujarat), India
A. B. Patil
Department of Agronomy, Junagadh Agriculture University, Junagadh (Gujarat), India

Abstract


The experiment was conducted during Kharif season of 2006 at Junagadh (Gujarat) to study the weed dynamics and yield as influenced by various weed control practices with different fertility levels in soybean [Glycine max (L.) Merril]. Results indicates that at 20 DAS the treatment W1 (Pre-emergence pendimethalin @ 0.5 kg ha-1 + HW and IC at 30 DAS) recorded lowest number of monocots, dicots and sedges weeds next to W5 (Weed free upto 60 DAS through hand weeding). Similarly at 40 and 60 DAS the treatment W3 (Post-emergence imazethapyr @ 75 g ha-1 at 25 DAS + HW and IC at 45 DAS) also reported minimum number of weeds next to W5. The lowest dry weight of weeds was recorded under treatment W5 followed by W4 and W3. Application of 40:80:40 kg NPK ha-1 recorded significantly higher values of weed count and total dry weight of weeds and grain yield compared to other levels. The treatment W4 (2 HW + 2 IC at 20 and 40 DAS) was found at par with treatment W5 in respect of grain yield.

Keywords


Soybean, Weed Count, Pendimathalin, Quizalofop-Ethyl, Imazethapyr, Fertility Levels.

References