8-Agri Sci - IJASR -EFFECTS of - Sirajul Islam - Bangladesh

International Journal of Agricultural Science and Research (IJASR) ISSN 2250-0057 Vol.2, Issue 3 Sep 2012 116-128 © TJPRC Pvt. Ltd., EFFECTS OF ORGANIC FERTILIZER ON THE GROWTH AND YIELD OF LETTUCE (Lactuca sativa L.) USED AS VEGETABLES MD. SIRAJUL ISLAM1, AYESHA AHMED2, SHAHIN MAHMUD3, T. R. TUSHER4 & S. KHANOM5 1,2,3,4 Department of Environmental Science and Resource Management, Mawlana Bhashani Science and Technology University, Tangail- 1902, Bangladesh 5 Department of Soil, Water and Env