JEQ Journal of Natural Resources and Life Sciences Education
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Fig. 2. Water-extractable soil phosphorus (WSP) by depth and tillage method (CH, chisel tillage; NT, no tillage) at Queenstown after four years of broiler litter amendments (kg P ha–1 4 yr–1 load).





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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