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 AS  Vol.10 No.2 , February 2019
Integrating Mechanical Weeding and Planting for Reduced Labour Input in Paddy Rice under System of Rice Intensification (SRI)
Abstract: The System of Rice Intensification (SRI) has been attributed to improvement in rice production with various attributes being accrued from application of the SRI Principles. The most notable are savings on water use and increase in yield. Alternate Wetting and Drying (AWD) has also paved way for mechanical weed control in paddy fields. One of the major constraints to adoption of SRI is the perceived increased labour input due to the careful transplanting and frequent weed control. This paper evaluates the effect of mechanization on labour input in SRI in comparison to the less mechanized farmer practice. In attempt to reduce drudgery in transplanting under SRI, the drum seeder was used to establish the rice crop by direct seeding. This was then followed by using SRI practices i.e. AWD and mechanical weeding. Direct seeding using a drum seeder was compared to transplanting in both SRI and the common farmer practice. Hand weeding was also evaluated and compared to mechanical weeding. Labour input cost was also compared to the income accrued from the yields. From the study, it was noted that direct seeding using the drum seeder reduced labour input by 97% compared to transplanting. This was possible in that in direct seeding, and there was no nursery preparation and management as in transplanting. The use of a mechanical weeder reduced labour input by 28.3% in relation to hand weeding. Labour input cost for SRI was cheaper (Kshs. 124,080 per hectare) compared to the common farmer practice (Kshs. 139,117.50 per hectare). There was more yield from the SRI practice (2.75 Ton/ha) compared to the common farmer practice (1.88 Ton/ha).
Cite this paper: Kathia, M. , Mati, B. , Ndiiri, J. and Wanjogu, R. (2019) Integrating Mechanical Weeding and Planting for Reduced Labour Input in Paddy Rice under System of Rice Intensification (SRI). Agricultural Sciences, 10, 121-130. doi: 10.4236/as.2019.102010.
References

[1]   Food and Agriculture Organization (2017) Rice Market Monitor December 2017. VOLUME XX ISSUE No. 4.
http://www.fao.org/economic/RMM

[2]   Ministry of Agriculture (MOA) (2009) National Rice Development Strategy (2008-2018). Republic of Kenya.

[3]   International Rice Research Institute (IRRI) (2014) Rice Production Manual

[4]   Senthilkumar, T. and Thilagm, V.K. (2012) Comparative Study on Improved TNAU Drum Seeder with SRI and Conventional Methods of Transplanting. Madras Agricultural Journal, 99, 629-630.

[5]   Thakur, A.K., Roy Chowdhury, S., Kundu, D.K. and Singh, R. (2004) Evaluation of Crop Establishment Methods in Irrigated Rice. Archives of Agronomy and Soil Science, 50, 631-640.
https://doi.org/10.1080/08927010400011278

[6]   Mishra, J.S., Singh, V.P., Rao, A.N. and Kumar, R. (2016) Chapter: Weed Management in Major Field Crops. In: Advances in Weed Management, Indian Society of Agronomy, 1-21.

[7]   Pandit, S.V., Kedar, P., Swati, B.G., Ranjeet, M. and Rajigare, P. (2016) Mechanical Portable Power Weeder Machine. International Journal of Research in Advanced Engineering and Technology, 2, 31-34.

[8]   Uphoff, N. (2006) The System of Rice Intensification (SRI) as a Methodology for Reducing Water Requirements in Irrigated Rice Production. International Dialogue on Rice and Water: Exploring Options for Food Security and Sustainable Environments, held at IRRI, Los Baños, Philippines, 7-8 March 2006.

[9]   Satyanarayana, A., Thiyagarajan, T.M. and Uphoff, N. (2006) Opportunities for Water Saving with Higher Yield from the System of Rice Intensification. Irrigation Science, 25, 99-115.
https://doi.org/10.1007/s00271-006-0038-8

[10]   Katambara, Z., Kahimba, F.C., Mahoo, H.F., Mbungu, W.B., Reuben, P., Mango, M. and Nyambamba, A. (2013) Adopting the System of Rice Intensification (SRI) in Tanzania. Agricultural Sciences, 4, 369-375.
https://doi.org/10.4236/as.2013.48053

[11]   Ndiiri, J.A., Mati, B.M., Home, P.G., Odongo, B. and Uphoff, N. (2013) Benefit-Cost Analysis of Paddy Rice under the System of Rice Intensification in Mwea, Kenya. Scientific Conference Proceedings, February 2013.

[12]   Parameswari, Y.S. and Srinivas, A. (2017) Weed Management in Rice—A Review. International Journal of Applied and Pure Science and Agriculture, 3, Issue 1.

 
 
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