الفهرس 
Effect of organic manures on soil physical propertiesOnly 14 pages are availabe for public view
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Abstract
Two field experiments were conducted at Ismailia and El
Fayoum sandy soils to evaluate the impact of organic and inorganic fertilization on Nigella sativa
yield and its oil quality. The used organic manures are sewag sludge; chicken, compost and biogas
with and without ammonium nitrate and superphosphate applications. Soil water constants, bnlk
density and available macro and micronutrients content were significantly improved by applying
these organic manures, depending on their organic and elemental content. Moreover, Nigella sativa
growth parameters, straw, and seed )’ield were significantly increased by applying NP combined with
the organic manures. This trend was affected by using the relatively saline irrigation water in
Ei-Fayoum location compared with the fresh one in Ismailia. The fixed and volatile oil content and
their constituents were also affected by the applied organic and inorganic manures, however, using
saline irrigation water decreased the volatile oil content of seeds and increased the fatty acid
content in plants grown in EL.-Fayoum area.