Effect of Phosphorus potassium and farm yard manure on the availiability of zinc in A long term field crop rotatin experiment

Meelu, O. PSharma, Kanwal Nath2019-08-142019-08-14197236622.pdfhttp://krishikosh.egranth.ac.in/handle/1/5810121565ennullEffect of Phosphorus potassium and farm yard manure on the availiability of zinc in A long term field crop rotatin experimentThesis