نتایج جستجو برای: olsen test
تعداد نتایج: 813422 فیلتر نتایج به سال:
Understanding the distribution of different P forms in soil aggregate fractions is important in evaluating the risk of P run-off and leaching in the agricultural soils. The objective of the present research was to determine the effect of aggregate size on soil phosphorus availability and fractionation in 10 calcareous soils. Micro aggregate (< 0.25 mm), macro aggregate (> 0.25 mm) and whole soi...
Overcoming the consequences of future scarcity P is crucial to ensure agriculture sustainability. This requires decision-making processes depending on data status agricultural fields, commonly conducted with soil tests (SPTs), and efficient use resource a societal scale following circular economy approach. All this will decrease losses subsequent environmental impact. However, SPTs are not univ...
effects of calcium carbonate and ph on the kinetics of p fixation were studied on four non-calcareous soils treated with different levels of pure caco3, and also on six soils which were adjusted for ph within the range of 5 to 9. soils were also treated with k2hpo4 at the rate of 45 mg p/kg before they were incubated for a period of 100 days at 25○c. soil samples were taken at certain predeterm...
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