A study was undertaken to isolate some fungi exhibiting phosphate-dissolution ability, and to test whether these fungi are capable of increasing the amount of available P in a calcareous soil treated with rock phosphate (RP) or with triple superphosphate (TSP) and its subsequent uptake by sorghum (Sorghum bieolor L. Moench). Penicillium sp. and two Aspergillusfoetidus (Naka) isolates significantly increased the availability of P in soil treated with RP or TSP during the growing season. Penicillium sp. isolate was more effective in increasing available P in the soil treated with RP or TSP than were Aspergillus isolates. However, the dry matter and P uptake responses to inoculation with these fungi were better in the soil treated with RP than in soil treated with TSP. In the TSP treated soil, the fungi achieved their maximum P releasing capacity two weeks earlier than in soil treated with RP. Positive and significant correlation coefficients among available P, P uptake and dry matter production at different periods of the growing season were observed following inoculation. However, none of these variables were found to be significantly correlated with the fungal population.

No abstract

Field experiment was undertaken in Al-Ishaki Experiment Station (60 Km .north of Baghdad) during the summer season of 2005 and 2006 to study the effect of foliar fertilization of soybean (Lee-74) by 0.015% of each Fe,Zn and Mn (as sulfates) applied in single and in all possible combinations of these three elements on soybean seed yield and its components.The results showed that foliar fertilization of soybean grown in calcareous soil by Fe,Zn and Mn in single and in all possible combination among these elements had significantly increased number of buds/plant ,weight of 100seed(gm), seed yield(gm)/plant, the seed yield Kg/ha. and had insignificant effect on seed number/bud in both seasons. It was noticed clearly that, the treatments involved Zn applied in single or in combination with Fe or Mn or both of them had the most effect in increasing the seed yield and its components in both seasons. The percents increases in seed yield of soybean by foliar application of Zn, Zn+Fe, Zn+Mn and

No abstract

Field experiment was undertaken in private field inAl-ramadi city in the right side of Euphrates river Anbar Governorate -Iraq, in silt loam soil during spring season of 2012.The aims of the experiment were to study the effect of bio-organic fertilizer(prepared by composting mixture of chicken wastes with wheat straw inocuted with some solubilizing phosphate microbes and enriched with 0.46% by ‫ا‬ ‫بحوث‬ ‫اعية،‬ ‫الزر‬ ‫للعلوم‬ ‫االنبار‬ ‫مجلة‬ ‫لم‬ ‫ال‬ ‫العلمي‬ ‫ؤتمر‬ ‫ابع‬ ‫ر‬ ‫المجلد:‬ ، 21 ‫خاص،‬ ‫عدد‬ ، 1122