Effects of Deficit Irrigation and Mulch on Yield and Quality of Potato Crop

  • S. Kiptoo Department of Agricultural & Biosystems Engineering, University of Eldoret, Kenya
  • E. C Kipkorir Department of Civil and Structural Engineering, Moi University, Kenya
  • C. K Kiptum Department of Civil and Structural Engineering, University of Eldoret, Kenya
##article.subject##: Yield, Water Use Efficiency, Deficit Irrigation, Rain Shelter

##article.abstract##

Field trials were carried out at Uswo location, located in North Rift part of Kenya during March 2016-July 2016 growing seasons. The main objective was to determine the yield and quality responses of potato crop to deficit irrigation (DI) and mulch. Experimental set up was a randomized complete block design (RCBD) with three replicates. In the study, five water levels of drip irrigation (100 % ETc, 90 % ETc, 80 % ETc, 60 % ETc and 50 % ETc) with and without mulch were considered. The 100 % ETc was used as an experimental control. Deficit irrigation was carried out at different growth stages of the plant for the remaining plots. The plots were covered during a rain event with a polythene sheet as a shelter and unrolled when there was no rain. Results revealed that plots with mulches at 100 % ETc attained 50 % plant emergence earlier than those without mulches. Also highest plant heights, stems per plant and better tuber qualities were achieved in the mulched plots under 100 % ETc. Water use efficiency (WUE) increased as the irrigation water was reduced. Tuber yields ranged from 16.2±0.6 t ha-1 to 29.5±0.9 t ha-1 and 14.3±0.5 t ha-1 to 27.3±0.5 t ha-1 for mulch and non-mulch treatments respectively. WUE ranged from 33.6 to 59.8 kg/ha/mm and 30.8 kg/ha/mm to 53.4 kg/ha/mm for mulch (M) and non-mulch (NM) respectively. Optimal crop production was obtained at 80 % ETc with WUE of 40.1 kg/ha/mm and 36.9 kg/ha/mm for mulch and non-mulch respectively. Therefore optimal crop production with minimum water use is recommended for practice in farms with scarce water resources.

References

Abong, G. O., Okoth, M. W., Karuri, E. G., Kabira, J. N., & Mathooko, F. M. (2009). Influence of potato cultivar and stage of maturity on oil content of French fries (chips) made from eight Kenyan potato cultivars. African Journal of Food, Agriculture, Nutrition and Development, 9(8)

Blum, A. (2009). Effective use of water (EUW) and not water-use efficiency (WUE) is the target of crop yield improvement under drought stress. Field Crops Research, 112(2-3), 119-123

Bozkurt, S., & Bozkurt, G. S. (2011). The effects of drip line depths and irrigation levels on yield, quality and water use characteristics of lettuce under greenhouse condition. African Journal of Biotechnology, 10(17), 3370-3379

Chakraborty, D., Nagarajan, S., Aggarwal, P., Gupta, V. K., Tomar, R. K., Garg, R. N., & Kalra, N. (2008). Effect of mulching on soil and plant water status, and the growth and yield of wheat (Triticum aestivum L.) in a semi-arid environment. Agricultural water management, 95(12), 1323-1334

Chandra, S., Singh, R. D., Bhatnagar, V. K., & Bisht, J. K. (2002). Effect of mulch and irrigation on tuber size, canopy temperature, water use and yield of potato (Solonum tuberosum). Indian Journal of Agronomy, 47(3), 443-448

Devaux, A., Kromann, P., & Ortiz, O. (2014). Potatoes for sustainable global food security. Potato Research, 57(3-4), 185-199

Döring, T. F., Brandt, M., Heß, J., Finckh, M. R., & Saucke, H. (2005). Effects of straw mulch on soil nitrate dynamics, weeds, yield and soil erosion in organically grown potatoes. Field crops research, 94(2-3), 238-249

Geerts, S., & Raes, D. (2009). Deficit irrigation as an on-farm strategy to maximize crop water productivity in dry areas. Agricultural water management, 96(9), 1275-1284

Hassan, A. A., Sarkar, A. A., Ali, M. H., & Karim, N. N. (2002). Effect of deficit irrigation at different growth stages on the yield of potato. Pakistan Journal of Biological Sciences, 5(2), 128-134

Kabira, J. N., & Lemaga, B. (2006). Potato Processing: Quality Evaluation procedures for research and food industries applications in East and Central Africa. Kenya Agricultural Research Institute, Nairobi, Kenya, 12

Kaguongo, W. P., Gildemacher, P., Demo, P., Wagoire, W., Kinyae, P., Andrade, J. & Thiele, G. (2008). Farmer practices and adoption of improved potato varieties in Kenya and Uganda. Social Sciences working paper, 5, 78-85

Kaguongo, W., Nyangweso, A., Mutunga, J., Nderitu, J., Lunga'ho, C., Nganga, N. & Irungu, J. (2013). A policymakers' guide to crop diversification. FAO

Kang, Y., Wang, F. X., Liu, H. J., & Yuan, B. Z. (2004). Potato Evapotranspiration and Yields under Different Drip Irrigation Regimes. In 2004 ASAE Annual Meeting (p. 1). American Society of Agricultural and Biological Engineers

Kar, G., & Kumar, A. (2007). Effects of irrigation and straw mulch on water use and tuber yield of potato in eastern India. Agricultural Water Management, 94(1-3), 109-116

Kipkorir, E. C., Raes, D., & Labadie, J. (2001). Optimal allocation of short-term irrigation supply. Irrigation and drainage systems, 15(3), 247-267

Muthoni, J., Mbiyu, M., & Kabira, J. N. (2011). Up-scaling production of certified potato seed tubers in Kenya: Potential of aeroponics technology. Journal of Horticulture and Forestry, 3(8), 238-243

Samad, S., Mustafa, M., Baharuddin, B., & Rampisela, D. A. (2015). The Effect of Mulch and Fertilizer on Soil Temperature of a Potato Growth. International Journal of Agriculture System, 1(1), 91-102.

Saxton, K. E., & Rawls, W. J. (2006). Soil water characteristic estimates by texture and organic matter for hydrologic solutions. Soil science society of America Journal, 70(5), 1569-1578

Starr, G. C., Rowland, D., Griffin, T. S., & Olanya, O. M. (2008). Soil water in relation to irrigation, water uptake and potato yield in a humid climate. Agricultural water management, 95(3), 292-300

Wang, F. X., Wu, X. X., Shock, C. C., Chu, L. Y., Gu, X. X., & Xue, X. (2011). Effects of drip irrigation regimes on potato tuber yield and quality under plastic mulch in arid Northwestern China. Field Crops Research, 122(1), 78-84

Yuan, B. Z., Nishiyama, S., & Kang, Y. (2003). Effects of different irrigation regimes on the growth and yield of drip-irrigated potato. Agricultural water management, 63(3), 153-167
##submissions.published##
2018-12-31
##issue.issue##
##issue.vol## 4 ##issue.no## 4 (2018)
##section.section##
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