TITLE:
Effect of closed circuits drip irrigation system and lateral lines length on growth, yield, quality and water use efficiency of soybean crop
AUTHORS:
Mohamed Yousif Tayel, Hani Abdel-Ghani Mansour, Sabreen Khalil Pibars
KEYWORDS:
Closed Circuits; Drip Irrigation; Lateral Lines; Soybean; WUE
JOURNAL NAME:
Agricultural Sciences,
Vol.4 No.2,
February
27,
2013
ABSTRACT: Field experiment was
conducted for one growing season (2012) in clay loam soil at the Experimental
Farm of Faculty of Agriculture, Southern Illinois University at Carbondale
(SIUC), USA on soybean crop to study the effect of: 1) the closed drip irrigation
system: closed circuits with one and two a manifolds for lateral lines (CM1DIS;
CM2DIS) and traditional drip irrigation system (TDIS) as a control; and 2) lateral
lines length (LLL): LLL1, LLL2 and LLL3 (40, 60,80 m) on soybean growth, yield, oil, protein content
and water use efficiency. Plants were drip irrigated every 4 days. N, K2O
and P2O5 fertilizers were added via irrigation water.
Data obtained could be outlined as follows: 1) According to the mean values of
soybean crop growth (leaf area; plant height), yield (grain and straw), both oil and protein content and water use efficiency,
the treatment used could be ranked in the following ascending orders: TDIS × LLL on
the data obtained were significant at the 1 % level; And 4) the highest values
of the obtained data and the lowest ones were achieved
in the following interactions: CM2DIS × LLL1;
TDIS × LLL3, respectively.