Degree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soils of Southern Brazil
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چکیده
منابع مشابه
Phosphorus Losses in Runoff from Virginia Soils
Previous research shows that dissolved P losses in runoff are well related to soil test P (STP), thus, various P loss prediction models incorporate the use of a STP vs. runoff DRP relationship. However, the relationship between STP and runoff DRP will vary based on soil type due to differences in soil properties. The purposes of the first two studies were to (i) investigate the effect of soil m...
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Phosphorus Runoff Losses from Alfalfa
Phosphorus (P) released from plants after freezing at the end of the growing season may be a contributor to P in runoff from agricultural landscapes. We evaluated P release from alfalfa (Medicago sativa L.) and mixed grass species [mainly quackgrass (Agropyron repens)] after freezing or drying in laboratory and field studies. Freezing released 18-30 % of the total P as dissolved reactive P (DRP...
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ژورنال
عنوان ژورنال: Pesquisa Agropecuária Brasileira
سال: 2016
ISSN: 0100-204X
DOI: 10.1590/s0100-204x2016000900008