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| Movement of Nitrogen, Phosphorus and Potassium Fertilizers in Undisturbed Soil Columns as Affected by Soil Compaction |
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F. Sadegh-Zadeh,
A.W. Samsuri
and B.J. Seh-Bardan
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Abstract: The objective of this study was to investigate the movement
of the added fertilizers to soil as affected by soil compaction. In the
experimented soil, three compaction levels were used. The soil was also
irrigated for four times and after the each irrigation, Phosphorus (P)
and Potassium (K) in the drainage water (effluent) was measured using
standard methods. After the fourth irrigation, each soil column was divided
to five equal parts and the elements in the columns were measured and
finally the data were analyzed using the statistical software. The results
showed that as the compaction is increased, the movement of nitrogen (N)
and K downward is reduced, but the movement of P is increased. The reason
for the movement of N in low compaction is the existence of macropores
for preferential flow and suitable conditions for nitrification. The movement
of the most of K in low compaction is due to movement through macropores
and preferential flow. The increase in P movement in high compaction is
caused by high moisture and movement by diffusion. |
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| COMMENTS |
12 April, 2010
Hormazd Naghavi:
Dear colleague
I am a soil researcher and work on solute movement through soils. I am very glad to connect to this site.
I (PhD of Soil physic) work in the Agriculture research center In Kerman province In Iran.
I would be very appreciated if you connect me too by email or other ways.
Sincerely yours
H. Naghavi
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