A field experiment was conducted on a clayey soil at Monshaat Abdel-Rahman
Village. Oekerns District. Oakahlla Governorate during winter season of 200212003 to
study the effect of application of rice straw as ·fresh straw, ash straw and cornposting
straw" with and without N, P and K chemical fertilizers and/or blofertlllzers (Nltroblen)
01'\ the biological yield (grain and straw). NPK concentration and uptake of wheat
plants. The experiment was factorial with arramed In a complete randomized block
design with 4 replicates and 16 treatments. The three studied treatments of (fresh, ash and compost straw), chemical
fertilizer (N, P and K) and blofertilizer (nitrobien consists of Azosplrillum) as well as the
interactions among them exhibited a significant positive effect. Where results show
that yield of wheat was significantly effect by the applied bio and chemical fertilizers. If
was found that composting rice straw Increased (lrain and straw yield of wheat.
Macronutrient content (N, P and k) In both grain and straw at harvest stage. More
increases were found with bio-fertilizer applications. The study under the present conditions recommends that use of composting
rice straw with bio and chemical fertilizer. The lowest of productlon was obtained by
using the ash of rice straw as well as with or without bio-fertllizer and chemical
fertilizer. Such treatment can decrease the enviro,1mental pollution resulting from
burning lhe rice straw in fields and prevent the black cloud.