en عمومى General پژوهشي Research Evaluation of new nutrient sources plays an important role in crop production. A field experiment was conducted at BRRI, Gazipur and at BRRI regional station, Sonagazi, Feni during Boro season of 2014-15. A new fertilizer, NP compound (NPC) was evaluated and compared the performances with di-ammonium phosphate (DAP). Test crop was BRRI dhan29. At Gazipur site, phosphorus (P) control plot produced only 1.97 t ha-1 grain yield that increased with added P along with two N rates. At lower N doses, application of P either from DAP or NPC produced similar grain yield. It was observed that 30% less N produced statistically similar grain yield to 100% N, irrespective of P sources. It can be inferred that 30% N could be saved without significant reduction of rice yield. At Sonagazi site, application of P either from DAP or NPC could not increase rice grain yields compared to P control plot. From the results of both sites it can be concluded that NPC and DAP performed equally either with 100% N or 30% less N rates. NPC, DAP, rice yield 4 10 http://intjmi.com/browse.php?a_code=A-10-1-164&slc_lang=en&sid=1 Mosud Iqbal 10031947532846002747 10031947532846002747 No Soil Science Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh Mahmuda Akter 10031947532846002748 10031947532846002748 No Soil Science Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh Jatish Chandra Biswas 10031947532846002749 10031947532846002749 No Soil Science Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh Aminul Islam 10031947532846002750 10031947532846002750 Yes Soil Science Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh