Browse on keywords: organic matter phosphorus
Search results on 05/21/13
2153. Gaur, A.C., R.S. Mathur and K.V. Sadasivam. 1980. Effect of organic materials and phosphate-dissolving culture on the crop yield.. Indian J. Agron., 25(3):501-503.
The seed of crops were inoculated with phosphate-solubilising culture (Pseudomonas striata) and (Aspergillus awamori). Rock phosphate application along with P-solubilising culture and full nitrogen significantly augmented both the grain and straw yields of wheat crop.
5065. Patten, A.G.. 1982. Comparison of nitrogen and phosphorous flows on an organic and conventional farm.. M.S. Thesis, Dept. of Agronomy and Soils, WSU, Pullman, WA.
Two adjacent farms, one organically managed and the other conventionally managed, located in the Palouse region of eastern WA, were studied for 2 years. Soil organic matter, total N, extractable P, and extractable K tended to be higher in the top 30 cm of soil from the organic farm. Mineral nitrogen in the top 30 cm of soil from the conventional farm was higher than or equal to that of the organic farm. Average long-term changes calculated in soil N and P pools resulted in substantial deficits of 44 and 14 kg/ha/yr, respectively, for the organic farm and 23 and 5 kg/ha/yr for the conventional farm. However, nutrients deficits were not reflected in lower soil N and P levels in the plot area tested on the organic farm as compared to the plot area on the conventional farm.