Your search found 9 records
1 Batchelor, C. H.; Bell, J. P.; Berthelot, B.; Roberts, J. M.; Robertson, C. A.; Soopramanien, G. C. 1985. MSIRI-IH drip irrigation research project: First Ratoon crop interim report. Oxfordshire, UK: Institute of Hydrology. 90 p.
(Location: IWMI-HQ Call no: 631.7.8 G168 BAT Record No: H0748)
2 Batchelor, C. H.; Holdsworth, P. M.; Bell, J. P.; Roberts, J. M.; Robertson, C. A.; Soopramanien, G. C.; Wellings, R. 1985. MSIRI-IH drip irrigation research project: Plant cane crop interim report. Wallingford, UK: Institute of Hydrology. iii, 64 p.
(Location: IWMI-HQ Call no: 631.7.8 G168 BAT Record No: H0751)
3 Foster, W. M.; Batchelor, C. H.; Hodnett, M. G.; Bell, J. P.. 1989. Soil and plant water relations in low-head drip irrigation in Sri Lanka. Oxfordshire, UK: Institute of Hydrology. 42p. (IH report no.ODG 89/7)
(Location: IWMI-HQ Call no: 631.7.2 G744 FOS Record No: H06011)
Final report of ODA Project R4378A
4 Batchelor, C. H.; Soopramanien, G. C.; Bell, J. P.; Nayamuth, R.; Hodnett, M. G. 1990. Importance of irrigation regime, dripline placement and row spacing in the drip irrigation of sugar cane. Agricultural Water Management, 17(1-3):75-94.
(Location: IWMI-HQ Call no: PER Record No: H06208)
5 Bell, J. P.; Wellings, S. R.; Hodnett, M. G.; Ah Koon, P. D. 1990. Soil water status: A concept for characterising soil water conditions beneath a drip irrigated row crop. Agricultural Water Management, 17(1-3):171-187.
(Location: IWMI-HQ Call no: PER Record No: H06215)
6 Hodnett, M. G.; Bell, J. P.; Ah Koon, P. D.; Soopramanien, G. C.; Batchelor, C. H. 1990. The control of drip irrigation of sugarcane using "Index" Tensiometers: Some comparisons with control by the water budget method. Agricultural Water Management, 17(1-3):189-207.
(Location: IWMI-HQ Call no: PER Record No: H06216)
7 Ah Koon, P. D.; Gregory, P. J.; Bell, J. P.. 1990. Influence of drip irrigation emission rate on distribution and drainage of water beneath a sugar cane and a fallow plot. Agricultural Water Management, 17(1-3):267-282.
(Location: IWMI-HQ Call no: PER Record No: H06219)
8 Foster, W. M.; Batchelor, C. H.; Bell, J. P.; Hodnett, M. G.; Sikurajapthy, S. 1989. Small-scale irrigation in Sri Lanka: Soil moisture status and crop response to drip irrigation. In Rydzewski, J. R.; Ward, C. F. (Eds.) Irrigation theory and practice. Proceedings of the International Conference, University of Southampton, 12-15 September. London: Pentech Press. pp.602-615.
Small scale systems ; Drip irrigation ; Furrow irrigation ; Evaluation ; Crops / Sri Lanka / Maha Illuppallama
(Location: IWMI-HQ Call no: 631.7 G000 RYD Record No: H07571)
This paper describes the evaluation of the irrigation efficiency of a low-cost, low-head drip irrigation system in the Dry Zone of Sri Lanka. The Institute of Hydrology set up field trails in which soil moisture regime and plant growth of four vegetable crops irrigated using the drip system were monitored and compared with controls irrigated by conventional furrow methods. This paper discusses the analysis for two of the crops: chilli (Capsicum annuum) and onion (Allium cepa). Although irrigation efficiencies were much greater for the drip irrigated crops, some yield reduction was noted. Recommendations are made that will lead to greater water savings and, possibly, higher yields under drip irrigation.
9 Hodnett, M. G.; Bell, J. P.; Batchelor, C. H.; Koon, D. A. H. 1989. Observations on the wetted zone beneath drip irrigated sugar cane in Mauritius. In Rydzewski, J. R.; Ward, C. F. (Eds.) Irrigation theory and practice. Proceedings of the International Conference, University of Southampton, 12-15 September. London: Pentech Press. pp.630-640.
(Location: IWMI-HQ Call no: 631.7 G000 RYD Record No: H07548)
The distribution of soil moisture potential around emitters spaced 0.75 m apart along driplines buried beneath a crop of sugar cane was monitored throughout the growing season using arrays of mercury manometer tensiometers. The amount of irrigation to apply was determined using estimates of potential evaporation, and effective rainfall model, and crop factors. The potential measurements showed that a wet zone, bounded laterally by steep potential gradients, persisted below the emitter throughout the 5 month period studied. The size and form of the wet zone, or "wetted volume" varied diurnally and through the study period as a result of the sensitive dynamic equilibrium between irrigation, abstraction and drainage. The long term variations in size occurred when irrigation inputs did not exactly match the abstraction by the crop. The results indicate that abstraction by the crop must be taken a pre-determined proportion of the soil profile.
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