تلخیص
The Rod-Kohi (flood irrigation/hill torrent) irrigation is practiced in Dera Ismail Khan Division of North West Frontier Province and Dera Ghazi Khan District of Punjab Province, Pakistan. It is an old traditional method of irrigation. Flood water is conserved in the specially prepared fields and is used for growing winter and summer crops. An on-farm research was conducted during the 1992-93 and 1993-94 rabi crop seasons to determine the impact of alternative tillage practices on crop water availability. Four preflood tillage practices (1) cultivator, (2) moldboard plough, (3) disc plough and (4) chisel plough were evaluated. Improved varieties of wheat (Triticum aestivum L.) (Pirsabak-91) and chickpea (Cicer arietinum L.) (CM-72) were grown. Each tillage practice was replicated four times in a split plot design. Tillage impacts on soil water contents, plant growth and crop yield were measured Significantly less moisture was retained in the soil after the harvesting of two crops when the soil was ploughed deep with moldboard and chisel plough. However, the same observations were not recorded in the second year of study in wheat crop mainly due to more rains in latter year and especially the last rain which occurred a week before harvesting. Among the four tillage practices, there was no pronounced effect on the characteristics of the two crops. The yield of wheat was significantly higher in the second year of study while it was reverse in the case of chickpea.
H.U.Khan, , M.Azam,, I.U.Awan, , M.A.Khan , M.Munir. (1995) EFFECT OF ROD-KOHI IRRIGATION ON WHEAT AND CHICKPEA PRODUCTION IN A SEMI-ARID CLIMATE OF PAKISTAN, The Journal Soil & Environment , Volume 10, Issue (1-4).
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