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Published online 27 February 2006
Published in Soil Sci Soc Am J 70:702-707 (2006)
DOI: 10.2136/sssaj2005.0129
© 2006 Soil Science Society of America
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Right arrow Phosphorus

Phosphorus and Potassium Distribution in Soil Following Long-Term Deep-Band Fertilization in Different Tillage Systems

Antonio P. Mallarinoa,* and Rogerio Borgesb

a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
b formerly Postdoctoral Research Associate, now at the Dep. of Agronomy, Univ. of Wisconsin


Figure 1
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  		Fig. 1. Mean soil-test values across five sites after 4 yr of no-till or chisel-disk tillage without fertilization but with previous broadcast fertilization for row and inter-row sampling zones. Figure 1A, data for soil-test P and P fertilization. Figure 1B, data for soil-test K and K fertilization. * Significant (P ≤ 0.1) tillage or sampling zone differences. CI, confidence interval (P ≤ 0.1) of a treatment mean.

 

Figure 2
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  		Fig. 2. Mean soil-test values across five sites after 4 yr of no-till or chisel-disk tillage and deep-band fertilization (13 to 18 cm depth and spaced 76 cm) for band/row (BR) and inter-band/inter-row (IBR) sampling zones. Figure 2A, data for soil-test P and P fertilization. Figure 2B, data for soil-test K and K fertilization. * Significant (P ≤ 0.1) tillage or sampling zone differences. CI, confidence interval (P ≤ 0.1) of a treatment mean.

 




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