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Indian Journal of Agricultural Research

Studies on root phenology, productivity and economics of wetland rice (Oryza sativa L.) as influenced by establishment methods and weed management practices

DOI: 10.18805/ijare.v0iOF.11181    | Article Id: A-4391 | Page : 358-361
Citation :- Studies on root phenology, productivity and economics of wetland rice(Oryza sativa L.) as influenced by establishment methodsand weed management practices .Indian Journal of Agricultural Research.2016.(50):358-361

M. Mokidul Islam* and Durga Charan Kalita1

mislam01d@yahoo.co.in
Address :

ICAR Research Complex for NEH Region, KVK Tura-794 005, Meghalaya, India.

Submitted Date : 13-02-2015
Accepted Date : 22-03-2016
First Online:

Abstract

A field experiment was conducted at farmers’ field in West Garo Hills district of Meghalaya, India during kharif 2010 and 2011 to study the root characteristics of rice under different establishment methods and integrated weed management practices. Results revealed that the length, volume and biomass of roots were higher in SRI method followed by ICM method than CRC system at physiological maturity stage during both the years of investigation. Hand weeding twice at 20 and 40 DAT followed by butachlor 50 EC@1.5 kg a.i.ha-1 at 3 DAT + mechanical weeding at 20 DAT recorded higher root parameters over unweeded control during both years of field study. Maximum grain yield of rice was recorded with SRI method of establishment followed by ICM. Among the weed management practices, hand weeding twice at 20 DAT and 40 DAT recorded significantly higher grain yield closely followed by butachlor 50EC@1.5 kg a.i. ha-1 at 3 DAT + one mechanical weeding at 20 DAT. The higher net profit and B:C ratio  under SRI establishment method of wetland rice could be obtained with butachlor 50 EC@1.5 kg a.i. ha-1 at 3 DAT + mechanical weeding at 20 DAT followed by hand weeding twice at 20 and 40 DAT. In ICM higher grain yield was recorded with hand weeding twice at 20 and 40 DAT.

Keywords

CRC Grain yield ICM Rice Root phenology SRI Weed management.

References

  1. Balasubramanian, V., Rajendra, R., Ravi, V., Chellaiah, N., Castro, E., Chandrasekaran, B., Jayraj, T. and Ramanathan, S. (2006). Integrated Crop Management for Enhancing Yield in Transplanted Rice Systems in Kerala. International Symposium on Rice from Green Revolution to Gene Revolution. Directorate of Rice Research, Hyderabad, India, 4-6 October 2004.
  2. Banerjee, P., Dutta, D., Bandyopadhya, P. and Maity, D. (2008). Production potential, water use efficiency and economics of hybrid rice under different levels of irrigation and weed management practices. Oryza, 45:30-35.
  3. Choudhury, J.K. and Thakuria, K. (1998). Evaluation of herbicides in wet seeded late Sali (winter) rice (Oryza sativa L.) in Assam. Indian J. Agron., 45:291-294. 
  4. Gomez, K.A. and Gomez, A.A. (1984). Statistically Procedures for Agricultural Research, 2nd edn., John Wiley and Sons Inc, New York, USA. 
  5. Kar, S., Varade, S. B., Subramanyam, T. K. and Ghildyal, B. P. (1974). Nature and growth pattern of rice root system under submerged and unsaturated conditions. Il Riso (Italy), 23: 173-179.
  6. Mankotia, B.S., Shekhar, J. and Negi, S.C. (2006). Performance of rice in SRI (system of rice intensification), ICM (integrated crop management) and conventional transplanting methods with common date of transplanting in the mid hills of HP. Haryana J. Agron., 22: 68-70.
  7. Pandey, S., (2009). Effect of weed control methods on rice cultivars under the system of rice intensification (SRI). M.Sc.(Agri) Thesis submitted to the Tribhuvan University Institute of Agriculture and Animal Science Rampur, Chitwan, Nepal . 
  8. Raju, M., Pandian, B.J. and Muthusankaranarayan, A. (2001). Weed management practices in wet seeded rice. Interntl. Rice Res. Inst. Newsletter, 1:4.
  9. Singh, C.V., Ghosh, B. C., Mittra, B. N. and Singh, R. K. (2008). Integrated weed and fertilizer management for sustainable weed control and improved productivity of upland rice. Arch. Agron. and Soil Sci., 54: 203 – 214.
  10. Sinha, S.K. and Jogesh Talati (2007). Productivity Impacts of the system of rice intensification (SRI).A case study in West Bengal, India. Agric. Water Managnt, 87: 55-60.
  11. Thakur A K, Uphoff, N. and Anthony, E. (2010). An assessment of physiological effects of system of rice intensification (SRI) practices compared with recommended rice cultivation practices in India. Expertl. Agric, 46: 77–98.
  12. Uphoff, N., (2003). Higher yields with fewer external inputs? The system of rice intensification and potential contributions to agricultural sustainability. Internl. J. Agric. Sust., 1: 38–50.
  13. Yang, C., Yang, L., Yang, Y. and Ouyang, Z. (2004). Rice root growth and nutrient uptake as influenced by organic manure in continuously and alternately flooded paddy soils. Agri. Water Managnt, 70: 67-81.
  14. Yoshida, S. (1981). Fundamentals of Rice Crop Science. International Rice Research Institute. Los Banos, Philippines. Pp.269.
     

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