1. International Maize and Wheat Improvement Centre (CIMMYT); NASC Complex New Delhi 110012 India
2. Borlaug Institute for South Asia (BISA); Samastipur 848125 India
3. Bihar Agricultural University; Sabour 813210 India
4. International Maize and Wheat Improvement Centre (CIMMYT); Texcoco Mexico
5. CCS Haryana Agricultural University, Regional Research Station; Bawal India
6. Rajendra Agricultural University; Samastipur 848125 India
7. Punjab Agricultural University; Ludhiana 141004 India
8. International Centre for Agricultural Research in the Dry Areas; Kabul Afghanistan
9. Division of Soil Science and Agricultural Chemistry; Indian Agricultural Research Institute; New Delhi 110012 India