No Detail Found!

Preliminary Studies on trickle irrigation system-modifications and improvements.

Author(s)
S. Afaq Husain PCSIR Laboratories, Karachi, Pakistan
V. A. Saeed PCSIR Laboratories, Karachi, Pakistan
S. Shahid Hussain PCSIR Laboratories, Karachi, Pakistan
Abstract
Experiments were carried out to develop and improve know-how for trickle irrigation system using pipes and fittings which are manufactured within the country and are easily available in the local market. Efficiency of the system was determined in laboratory experiments as well as field trials with (okra) Abelmoschus esculentus and Solanum melongena (brinjal) as test crops. Improvements were made to provide two supply lines instead of one on either side of the field. Tricklers were substituted with holes of 1 mm. dia. on the upper side of distributaries and used for dripping of water. A comparison of poly (vinyl chloride), rigid pipes (PVC rigid pipes ) and poly (vinyl chloride) flexible hose pipes (PVC flexible pipes) in field trials showed that PVC flexible pipes were more efficient and durable than PVC rigid pipes, which, due to heat, begin to bend in the middle after 3 to 4 months and the joints get loosened resulting in leakage of water. Vertical and horizontal dispersion of known volumes of water in field soil was also determined. Results on okra and brinjal showed that 2 to 3 litres of water (per plant) once or twice a week were not enough to promote healthy vegetative growth. However 6-7 litres of water produced excellent results. Trickle or drip irrigated plots having brinjal as test crop showed 70% saving on water as compared to the conventional method of irrigations, though with 16.11% less yield. This decrease in yield can be overcome with further improvements in technology. 632 Plant Damage Injuries Diseases Pests Plant Protection
Publication Details
Page(s) 141-144
DOI DOI not available
Published Journal: Pakistan Journal of Scientific and Industrial Research, Volume: 29, Issue: 2, Year: 1986

Request the full text from PASTIC

0

Citations

0

Downloads

32

Views