الفهرس 
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Abstract
Two field experimentals were conducted in the two successive growing seasons (2012/2013 and 2013/2014) at the Experimental Farm of Mallawy Agricultural Research Station, ARC, Minia Governorate, Egypt to evaluate the use of rock phosphate along with phosphorine inoculation, farmyard manure and sulphur as well as superphosphate application on growth and yield component characters, grains and straw yields, nutrients concentration and uptake of wheat plant and soil properties and fertility. The experiment was laid out in a complete randomized block design with four replicates, the treatments as follow:
1. Control
2. Rock phosphate (RP) at rate of 43 kg ha-1
3. Phosphorine inoculation (bacterial dissolving phosphate, B)
4. Farmyard manure at rate of 24 Mg ha-1 (FYM)
5. Sulphur (240 kg ha-1, S)
6. RP+B
7. RP+FYM
8. RP+S
9. RP+B+FYM
10. RP+B+S
11. RP+B+FYM+S
12. 16 kg ha-1 as calcium superphosphate (P1)
13. 32 kg ha-1 as calcium superphosphate (P2)
Results of this study can be summarized as follows:
1-Effect of Rock phosphate
Results obtained from this study indicated that sole application of RP as only source of phosphorus led to significant increasing of plant height, dry weight, number of spikes /m2, number of grains /spike, grain and/ or straw yields, P concentration in both grains and straw, N; P and K uptake in grains and/ or straw and soil available phosphorus. On the other hand ,the weight of the thousand grains. N and K concentration and P in the second season in wheat plants in age of 75 days as well as soil pH, salinity, soil organic matter and soil available N and K did not affect by rock phosphate application comparing with control.
2- Effect of microbial inoculation:
Seed wheat inoculation with phosphorine had a positive effect, when compared with control on plant height, dry weight, number of grains /spike, yield of grains and/ or straw, phosphorus concentration in grain and straw, N; P and K uptake by grains and/ or straw and soil available phosphorus after harvesting. However, number of spikes /m2, 1000-grains weight, nutrient concentration in wheat plant at 75 days age, soil reaction, soil salinity, soil organic matter and soil available N and K after harvesting did not respond to phosphorine treatment.
3- Effect of farmyard manure:
The obtained results showed that added 24 Mg ha-1 FYM to wheat plants was significantly increased plant height, dry weight, number of spikes /m2, number of grains /spike, grain and / or straw yields, N and K concentration in wheat plants at 75 days age, N; P and K concentration in grains or straw, N; P and K uptake by grains and/or straw, soil salinity, soil organic matter and soil available N; P and K after wheat harvest. Meanwhile, farmyard manure was significantly decreased soil pH values. On the other hand, 1000- grains weight and phosphorus concentration in wheat plant at 75 days after sowing did not affect by farmyard manure.
4- Effect of sulphur:
Plant height, dry weight, number of grains/spike, phosphorus concentration in plant at 75 days age, phosphorus concentration in grains and straw yields, N; P and K uptake by grains and/or straw and soil available phosphorus after harvest were significantly enhanced due to sulphur application, while pH values were significantly decreased by added sulphur. On the other hand, number of spike /m2, 1000- grains weight, N and K concentration in wheat plants at 75 days age and in grains and straw, soil salinity and soil organic matter did not respond to sulphur application.
5- Effect of superphosphate :
The results obtained cleared that application of 50% or 100% of the recommended phosphorus rate were significantly improved plant height, dry weight, number of spikes/m2, number of grains/ spike, grain and/or straw yields, N and P concentration in wheat plant at 75 days age, phosphorus concentration in both grains and straw, N; P and K uptake by grains and /or straw and soil available phosphorus after harvesting wheat plants. While, 1000-grain weight, potassium concentration in plants at 75 days age, N and K concentration in grains and straw, soil pH, soil salinity, soil organic matter and soil available N and K in soil after harvest did not response to mineral phosphorus fertilization. Increasing mineral phosphorus level from 50 to 100% from its recommended rate improved the effect of mineral phosphorus fertilization on the studied traits.