Science and Education Publishing World Journal of Agricultural Research 2333-0678 2 6A 2014 12 28 Preface to Special Issue on Conservation Agriculture for Sustainable Intensification 0 0 EN Tika Bahadur Karki Nepal Agricultural Research Council, National Maize Research Program, Rampur, Chitwan, Nepal Jiban Shrestha Mahendra Prasad Tripathi WJAR201426A0 10.12691/wjar-2-6A-0 2014 10 11 2014 11 12 2014 12 28