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Titles
English : A comparison of phosphate forms and rates as affected by inoculation with phosphate dissolving bacteria in sandy soil
Arabic : مقارنة صور و معدلات الفوسفور المتأثرة بالتلقيح بواسطة البكتريا المذيبة للفوسفات فى الآراضى الرملية
Abstract A field experiment was conducted at EL- Ismailia Agric. Res. Station, ARC to compare the effect of three different phosphorus sources ,i.e.,superphosphate, triple-superphosphate and rock- phosphate on some chemical properties of the soil after maize and peanut harvesting. Each of the tested phosphorus fertilizers were applied at different rates (31, 24 and 15.5 units of P2O5) in presence and /or absence of the phosphate dissolving bacteria Such effect was also considered due to maize and peanut crops productivity and their plant macronutrients uptake. Results revealed that phosphorus sources and rates increased EC values in soil as compared to no phosphorus application for maize or peanut crops. This trend was true for pH values only in the second season. Generally, the soil reaction (pH) was not significantly affected by phosphours treatments, while EC was significantly affected. The rates and forms of phosphorus either applied alone or combined with phosphate dissolving bacteria increased the soil available NPK. The highest soil available nutrient values were due to the effect of triple-superphosphate with high rate combined with Bacillus megatherium inoculation. Such significant increases were recorded in both crops as a result of increasing phosphorus rates and in presence of inoculation. Triple-superphosphate gave the highest values of soil available nutrients. The same behavior was observed in the yield of both maize and peanut and their nutrients uptake. The P recovery, a difference between forms of phosphorus, was greater at lower than at higher P-rates for both maize and peanut plants. P recovery percent was superiority of maize and peanut plants when triple, rock- phosphate at high rate combined with phosphate dissolving bacteria gave similar results recorded by the use of high rate of triple-superphosphate in presence inoculation. This, however, indicate that rock- phosphate can be used as a potential source of phosphorus fertilizer in presence of the phosphate dissolving bacteria (Bacillus megatherium
Publication year 2009
Organization Name
    Soil, Water and Environment Research Institute (SWERI)
serial title Conference on Recent Technologies in Agriculture ,2009……………………………………
Author(s) from ARC
AGROVOC
TERMS
Bacteria. Maize. Peanut butter. Phosphate fertilizers. Phosphorus.
Publication Type Journal

 
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