Results 251 to 260 of about 32,936 (303)
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Forms of Phosphorus and Fixation in Soils
Soil Science Society of America Journal, 1959Abstract A determination of the main forms of P, P fixation, and a comparison of several methods of determining available P were made on several Minnesota soils. Inorganic and organic forms of P were characterized and the inorganic fraction was further subdivided into aluminum phosphate, iron phosphate and calcium ...
Chai Moo Cho, A. C. Caldwell
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Phosphorus Fixation in Nilgiri Soils
Madras Agricultural Journal, 1967Rotry (1946) as quoted by McKelvy et al (1953) declared rightly that phosphorus is the bottleneck of world's hunger. Acid soils as those found in the Nilgiris pose an economic problem, due to the undesirable nature of the transformation phosphorous undergoes in acid soils.
ΜΑΤHAN K.K, JOHN DURAIRAJ D
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Edge-Rich Black Phosphorus for Photocatalytic Nitrogen Fixation
The Journal of Physical Chemistry Letters, 2020Development of efficient catalysts for ammonia production under ambient conditions is a challenge. In this work, edge-rich black phosphorus nanoflakes (eBP NFs) are synthesized for highly efficient photocatalytic nitrogen fixation. The eBP NFs synthesized by a chemical etching exfoliation method have a uniform size and about 90 nm wide and the flake ...
Shi Bian +5 more
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Phosphorus fixation studies with tomatoes on a krasnozem soil
Australian Journal of Experimental Agriculture and Animal Husbandry, 1966A series of glasshouse experiments was conducted with a krasnozem soil to determine the effect of previous applications of superphosphate on the rate at which the soil was able to fix further additions of phosphorus. Two soil samples were investigated, one a virgin soil, and the other a cultivated soil which had been fertilized with superphosphate ...
JD Hughes, RC Merary
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Phosphorus Fixation as a Transfer Controlled Phenomenon
Soil Science Society of America Journal, 1965Abstract Phosphorus fixation in various soils was accelerated by: (i) the application of P in solution thus inducing its immediate dispersion in the soil, and (ii) increasing the rate of movement of the P in the soil by changes in the water regime.
Y. Avnimelech, J. Hagin
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Sources of Phosphorus for Plants Grown in Soils with Differing Phosphorus Fixation Tendencies
Soil Science Society of America Journal, 1970Abstract Several phosphates of varying water solubilities were evaluated as sources of P for plants grown in soils with different degrees of P fixation. With relatively low fixation, P content of corn ( Zea mays ) seedlings increased in direct proportion to water solubility ...
E. O. McLean, T. J. Logan
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Influence of phosphorus on nitrogen fixation in chickpea cultivars
Journal of Plant Nutrition, 1995Abstract Phosphorus (P) is a major nutrient factor influencing nitrogen (N) accumulation and partitioning of photosynthates in plants, especially the symbiotic N2‐fixation in legumes. This study was conducted to investigate how P application (0, 20, 40, and 60 kg P2O5/ha) affects symbiotic N2‐fixation of three cultivars (C 235, Pusa 408, and Pusa 417 ...
M. Yahiya, null Samiullah, A. Fatma
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Phosphorus Fixation Capacity of Tamil Nadu Soils
Madras Agricultural Journal, 1978The P fixation capacity of the four major soil groups of Tamil Nadu was estima- tod. The P fixation capacity of the soils ranged from 20 to 183 mg P/100 g of soil with a mean value of 85 mg P/100 g of soil. The soils studied were found to differ widely in their P fixation capacity, the highest value of P fixation capacity was recorded in the high level
KOTHANDARAMAN G.V, KRISHNAMOORTHY K.K
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1949
Publisher Summary In many soils, fixed phosphorus probably embraces most of the phosphorus available for plant absorption. During the processes of soil formation, phosphorus enters the soil solution and is subsequently converted into fixed phosphorus or absorbed by plants and eventually deposited on the soil surface as plant or animal residues. Thus,
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Publisher Summary In many soils, fixed phosphorus probably embraces most of the phosphorus available for plant absorption. During the processes of soil formation, phosphorus enters the soil solution and is subsequently converted into fixed phosphorus or absorbed by plants and eventually deposited on the soil surface as plant or animal residues. Thus,
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Apparent phosphorus fixation by selected soils of Louisiana
Communications in Soil Science and Plant Analysis, 1995Abstract Investigations were conducted to determine the effects of different rates of phosphorus (P) application on extractable P and to develop regression models for predicting extractable P by using the Bray I, Bray II, Double Acid (Mehlich No. 1), and Modified Olsen extradants on 54 agricultural important soils of Louisiana.
L. R. Bhiyan, J. E. Sedberry
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