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Zumbrunnen, J
Seavert, C
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Authors
G. Davis, J
Schierer, R
Zumbrunnen, J
Yin, F
Seavert, C
Bai, J
Topics
Type
Oral
Year
2007
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Filter results2 paper(s) found.

1. Predicting Phosphorus Runoff from Calcareous Soils

Studies have shown that as extractable soil P levels increase, runoff P levels also increase. This relationship has been found on many different soils, but tends to be unique for each soil series. Very little research exists evaluating this relationship in calcareous soils. The objectives of this study were to determine soil series specific relationships between soil test phosphorus (STP) and runoff P for three calcareous soils, to compare the use of different soil extractants for runoff P prediction... J. G. davis, R. Schierer, J. Zumbrunnen

2. Nitrogen and Phosphorus Fertigation on Pears

Avoiding over-application of nitrogen (N) and phosphorus (P) fertilizers and increasing N and P use efficiency on pear orchards have significant benefits on pear productivity and the environment. Split fertigation of N and P fertilizers and banding application of N and P fertilizers may increase the use efficiency of applied N and P fertilizers compared with our current N and P management system -- single broadcasting application of dry N and P fertilizers to the soil surface. A field experiment... F. Yin, C. Seavert, J. Bai