A field experiment was conducted during 2002-03 and 2003-04 at Department of Agronomy, Punjab Agricultural University, Ludhiana to study the possible options for diversification of existing rice-wheat cropping system.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/production-potential-and-economics-different-cropping-systems-and-their-impact-soil
[2] http://admin.indiaenvironmentportal.org.in/category/author/s-s-walia
[3] http://admin.indiaenvironmentportal.org.in/category/journal/indian-journal-ecology
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/soil-capability
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agricultural-research
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rice
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wheat
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/legumes
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundnut
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/potato