Document Type : Research articles.
Author
Soils, Water and Environ. Res. Institute, Agric. Res. Centre, Giza, Egypt
Abstract
A field experiment was carried out on a saline sandy loam soil at
Village No. 7, Sahl El-Tina, North Sinai, Egypt during the two successive
winter seasons of 2008-2009 and 2009-2010 to study the effective role of
different sulphure sources and rates on ameliorating soil characteristics,
wheat productivity (Triticum aestivium L., Sakha 93 cv.) and grain quality
under soil salinity stress. The applied different S-sources and rates were
gypsum at the rates of 0, 2, 4 Mg fed-1; elemental sulphur at the rates of 0,
0.2 and 0.4 Mg fed-1 and potassium sulphate at the rates of 0, 0.1 and 0.2
Mg fed-1. Gypsum and elemental sulphur were added to the soil at 25 days
before wheat grains plantation, and mixed thoroughly in soil surface layer
with ploughing, while half dose of potassium sulphate was applied before
sowing and other one at 30 days after planting.
The obtained results showed that application of the tested S-sources at
the different rates led to significantly increases for plant height, wheat
biological yield (straw and grain yields), weight of 1000 grains and grain
contents of either some macro- (N, P, K, and S) or micro-nutrients (Fe, Mn
and Zn), with a maximized effective role by increasing the applied rates. It
is evident from the distribution patterns of nutrients uptake by wheat grains
that the effective role of the tested S-sources could be arranged in an
ascending order of elemental sulphure ≥ gypsum > potassium sulphate.
As for the influence of the tested different S-sources and rates on
some soil properties, the obtained data revealed that there was a clear
decline in each of soil ECe and pH value, especially with increasing the
applied rates during the two seasons under study. Also, the applied tested
different S-sources caused pronounced increases for wheat grain contents of
N, P K, S, Fe, Mn and Zn, with a more effective role by increasing the Ssource rates. In general, it was could be categorized the applied S-sources
according to their beneficial effects on wheat grain contents of nutrients in
an ascending order of sulphur ≥ gypsum > potassium sulphate, except of K
where K-sulphate surpassed the applied other two S-sources.
Keywords
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