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Maurya, B R; Kumar, Ashok; Rathore, R S; Raghuwanshi, Richa (2012)
Publisher: Journal of Engineering Computers & Applied Sciences
Journal: Journal of Engineering Computers & Applied Sciences
Languages: English
Types: Article
Subjects: Engineering; Soil Science and Agriculture Chemistery, Biofertilizer microorganisms, microbial diversity, Azotobacter, Azospirillum, crop rotations, electro-chemical properties, districts
Asymbiotic and associative diazotropic bacteria such as Azotobacter and Azosprillum, respectively are widely distributed in different rhizospheric and non- rhizospheric soils and help in growth and development of plants. Sixty two soil samples were collected from different crop rotations namely Rice-Wheat, Vegetables, Agro forestry and Grassland from the districts Chandauli, Jaunpur,Ballia, Ghazipur, Sultanpur and Faizabad of eastern Uttar Pradesh in India for enumerating population of Azotobacter & Azospirillum and electro-chemical properties of soil. The result showed that per gram cfu of Azotobacter and Azospirillum in rice-wheat ranged from 10x 105 to 21 x 105 and 5.5 x 105 to 15 x 105, in vegetables 14.5 x 105 to 21 x 105 and 9 x 105 to 15 x 105, in agro-forestry 11x 105 to 20 x 105 and 6 x 105 to 14 x 105 and in grassland 8x 105 to 12 x 105 and 5 x 105 to 9 x 105, respectively. Soils had a neutral to sodic reaction (pH= 7.2-8.9), medium to high organic carbon (0.59-0.94%), low to medium phosphorus (5.34 -10.23 kg ha-1), medium to high potassium (129-379 kg ha-1) and medium available nitrogen (310-466 kg ha-1).
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