Soliman., S. (2006). EFFECT OF IRRIGATION AT DIFFERENT AVAILABLE SOIL MOISTURE LEVELS, N AND K FERTILIZATION ON MAIZE YIELD AND ITS ATTRIBUTES. Journal of Plant Production, 31(12), 7525-7540. doi: 10.21608/jpp.2006.236413
Salwa E . Soliman.. "EFFECT OF IRRIGATION AT DIFFERENT AVAILABLE SOIL MOISTURE LEVELS, N AND K FERTILIZATION ON MAIZE YIELD AND ITS ATTRIBUTES". Journal of Plant Production, 31, 12, 2006, 7525-7540. doi: 10.21608/jpp.2006.236413
Soliman., S. (2006). 'EFFECT OF IRRIGATION AT DIFFERENT AVAILABLE SOIL MOISTURE LEVELS, N AND K FERTILIZATION ON MAIZE YIELD AND ITS ATTRIBUTES', Journal of Plant Production, 31(12), pp. 7525-7540. doi: 10.21608/jpp.2006.236413
Soliman., S. EFFECT OF IRRIGATION AT DIFFERENT AVAILABLE SOIL MOISTURE LEVELS, N AND K FERTILIZATION ON MAIZE YIELD AND ITS ATTRIBUTES. Journal of Plant Production, 2006; 31(12): 7525-7540. doi: 10.21608/jpp.2006.236413
EFFECT OF IRRIGATION AT DIFFERENT AVAILABLE SOIL MOISTURE LEVELS, N AND K FERTILIZATION ON MAIZE YIELD AND ITS ATTRIBUTES
Agron. Dept.. Fac. of Agric., Cairo Univ.. Giza, Egypt.
Abstract
A two-year experiment was carried out at Shalakan Kalubia. Agric. Res. Sta.
NRC. Egypt. during 2000 and 2001 seasons. The study aimed to investigate the
effect of irrigation. I. at different available soil moisture, (ASM). contents (I40. tea and
lag %), nitrogen fertilization levels. (Nico. N110 and N120 Kg Med) and potassium levels
(K12. K24 and K3; kg Kzorfed) on maize yield and some of its attributes. A combined
analysis was performed for the two seasons. The obtained results showed that most
of the differences among means were significant either regarding the independent
factors or their different interactions. Gradual and significant increases in grain
yield/fed and most of its attributes were observed as the level of any independent
factor was increased. The higher grain yield/fed was produced by the combination of
irrigation at 80% ASM and addition of 110 kg N/fed along with 36 kg K201fed.
Equilibrity among interaction means showed possibilities of replacement
among them. With this respect |eo°/e x N100 could replace [40% x N110 Also lao% x Nun x
K35 could replace lm‘iii x Nno x K24.
Water consumptive use. WCU. differed according to the season and level of
irrigation. The calculated WCU ranged between 1942.0 to 2800.0 m3/fed. distributed in
7 to 12 irrigations. Water use efficiency. WUE differed between 1.31 to 1.79 kglm’.
according to the level of irrigation. being higher for the lower irrigation level.
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