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Published online 1 May 2008
Published in J Environ Qual 37:1288-1298 (2008)
DOI: 10.2134/jeq2007.0414
© 2008 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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Leachability and Phytoavailability of Nitrogen, Phosphorus, and Potassium from Different Bio-composts under Chloride- and Sulfate-Dominated Irrigation Water

Zahoor Ahmada,*, Sadahiro Yamamotob and Toshimasa Honnab

a Dep. of Bio-environment Science, The United Graduate School of Agricultural Sciences, Tottori Univ., Tottori. Japan
b Lab. of Soil Science, Faculty of Agriculture, Tottori Univ., Tottori, Japan


Figure 1
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Fig. 1. Effect of compost types and saline irrigation on electrical conductivity and pH of leachate. Leaching events 1, 2, 3, 4, 5, 6, 7, 8, 9 refer to 8, 12, 18, 22, 26, 29, 32, 38, and 47 d after sowing, respectively (LSD at P = 0.05; n = 3).

 

Figure 2
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Fig. 2. Effect of compost types and saline irrigation on maize dry matter yield. Small bars refer to SE. DW, total shoot or root dry weight per pot.

 

Figure 3
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Fig. 3. Effect of saline irrigation and compost amendments on nutrient uptake and recovery. Small bars refer to SE.

 

Figure 4
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Fig. 4. Effect of Cl– and SO42––dominated saline irrigation water on NO3–N (a) and NH4–N (b) leaching from different compost amendments. Leaching events 1, 2, 3, 4, 5, 6, 7, 8, and 9 refer to 8, 12, 18, 22, 26, 29, 32, 38, and 47 d after sowing, respectively (LSD at P = 0.05; n = 3).

 

Figure 5
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Fig. 5. Effect of Cl– and SO42– –dominated saline irrigation water on dissolved reactive phosphorus concentration in leachate from different compost amendments. Leaching events 1, 2, 3, 4, 5, 6, 7, 8, and 9 refer to 8, 12, 18, 22, 26, 29, 32, 38, and 47 d after sowing, respectively (LSD at P = 0.05; n = 3).

 

Figure 6
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Fig. 6. Effect of Cl– and SO42––dominated saline irrigation water on potassium leaching from different compost amendments. Leaching events 1, 2, 3, 4, 5, 6, 7, 8, and 9 refer to 8, 12, 18, 22, 26, 29, 32, 38, and 47 d after sowing, respectively (LSD at P = 0.05; n = 3).

 





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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education
Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
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