EFFECT OF DISTANCES BETWEEN EMITTERS IN DRIP IRRIGATION SYSTEM AND ALTERNATION

R. Nedewi, D.; J. Hassan, M.

	EFFECT OF DISTANCES BETWEEN EMITTERS IN DRIP IRRIGATION SYSTEM AND ALTERNATION
IRAQ JOURNAL OF AGRICULTURE
Article 1, Volume 19, Issue 3, 2014, Pages 0-0
Authors
D. R. Nedewi; M. J. Hassan
Abstract
This study conducted in the field of Agriculture College, University of Basrah, in Karmat-Ali during the spring season of 2011 on clay texture soil, to investigate. The effect of distance between emitters (15,25,35,45cm) and alternation. Between irrigation water treatment was(irrigation water of low salinity ECe =2.0–2.3 dS.m-1(F), irrigation water of high salinity ECe =7-8 dS.m-1(S), alternation high salinity water- low salinity water(SF) and trio- alternation high salinity water – high salinity water- low salinity water(SSF))by using drip irrigation system and the irrigation level in this study is 100% from EP with addition 20% as leaching requirements, on vertical and horizontal soil salinity distribution and yield corn crop(Zea mays L.) class search 106.The results explain salt concentration was increased with increase distance between emitters and with increase percentage of high salinity water in one irrigation cycle. The lowest values of salt were found under the emitters directly and increased with increase distance between emitters for all depths, and the lower of salt concentration was found in depth 15-30cm, and the higher of salt concentration was in depth 30–45 cm for all horizontal distances .In case of interactions among distance between emitters and irrigation water quality the study show in distance between emitters which have values close together and different in water quality. The plant production was reduced with increase distance between emitters and with the increase of salinity water.

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