Two field experiments were conducted in clay soil during Ihe 2000 and
200! seasons at die Agricultural Research and Experiment Center of the
Faculty of Agriculture, Moshtohor, Kalubia.
The main aim of this study is to evaluate long strips and long furrows of
three lengths 50, 100 and 150 m. laser-leveled field compared with traditional
land leveling on:
- Irrigation waterrcqniremcnts forma™.
- Waler application efficiency, crop yield and ilscomponents
and water use efficiency.
- Investment costs of methods.
The experimenlr.1 results show tlipc
The amount of the applied water increased when the furrow or Strip
length increased for the sane discharge rate.
The water application efficiencies (Ea) decreased by increasing the
furrow length at constant flow rate. The 50m-furrow length for laser-land
leveling had the best water application efficiency of 82.9%.
Ear weights, weight of grains.'ear and grain y;uld/fcr! were significantly
afi?cic(i by different trenimcnts muter study in Mh seasons, Laser land
leveling, fu;rowing and 50m-furrow lenglh was the best treatments. Plan!
heights, ear length, number cf rows/ear, number of kernels per row and 100-
kernels weight were affected only by 50m-furrow length in both seasons. Ear
length only in 2000 and plant height in 2001 increased by laser land leveling.
Water use efficiency (WUE) of maize increased by laser leveling,
furrowing and 50m furrow lenglh in bclh seasons.
The optimum economically treatment was including laser land leveling
combined with furrowing and 50m furrow length, where the net farm return
valueu I727.6S and '7^.40 LE/fed in 2000 and 2001, respectively.
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