การจัดการธาตุอาหารหลักในการปลูกข้าวอินทรีย์

Abstract

Growing organic rice 3 varieties with KDML105 the photosensitive rice, CNT1 the high yielding irrigate rice and DOA1 the imported japonica rice, the experiment established in wet season of 2004-2005 at Phrae Rice Research Center, Chiangmai Rice Research Center and Chiangrai Rice Research Center. Each Center growing 2 varieties with 6 treatments are (1) none (2) sesbania+5BE (3) sesbania+50RP (4) sesbania+50RP+50FYM (5) sesbania+50RP+100ash+50FYM and (6) chemical fertilizer, and the result was. KDML105 need not much nutrients, so the organic materials could take place chemical fertilizer, Applying FYM at PI or 5 times bioextract perform better grain yield. But aware in applying husk-ash to the high potassium soil. CNT1, trt. No. 5 and trt. No.2 show preferable grain yield. DOA1 need higher nitrogen than indica rice, need more materials, the most preferable treatment was No.5 also with trt.no.2.