Nepalese Journal of Agricultural Sciences, 2018, vol. 17 ISSN 2091- 042X; e ISSN 2091- 0428 0 ISSN 2091- 042X E-ISSN 2091- 0428 Nepalese Journal of Agricultural Sciences 2018, volume 17 HIMALAYAN COLLEGE OF AGRICULTURAL SCIENCES AND TECHNOLOGY Kalanki, Kirtipur 1, Kathmandu, Nepal