Abstract
The efficiency of different Aspergillus strains in and soils was studied in pot experiments to evaluate the effects of these fungi on the enhancement of rhizosphere enzyme activities, P uptake by plants, available P status in the soil, dry matter production and grain yield of wheat ( Triticum aestivum L.) and chick pea ( Cicer arietinum Linn.). In wheat, significant increases in phosphatase (acid and alkaline) and dehydrogenase activities were observed upon soil inoculation and in chick pea there was also an increase in nitrogenase activity. Inoculation significantly improved dry matter and grain yield in both crops and decreased the shoot:root ratio. In general, there was a significant improvement in P uptake by plants and extractable P status in the soil. Aspergillus rugulosus was found to be superior among the phosphatase-producing fungi that were tested while Aspergillus niger was found to be least effective relative to the other fungi. The experiment showed that Aspergillus strains significantly increased the P uptake and biomass yield of wheat and chick pea.
Published Version
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