Efficiency of organic- mineral fertilizer on the growth and yield of rice on red yellow clay in Thai Nguyen - Nghiên cứu phân bón

18
May

Cao Ky Son, Pham Ngoc Tuan, Le Thi Minh Luong, Nguyen Thi Nga,

The experiment was conducted in Pho Yen and Dong Hy districts, Thai Nguyen province in 2010 and 2011.  Experimen results showed that  the treatment of organic – mineral fertilizer  +  medium and micro-elements adding humic        5% (HCK + TVL + H 5%)  has brought  the highest  yield/ one kg NPK: increase from 15.48 to 16.37 %, respectively  910 kg -1264kg/ha, the performance gain from 4.92 to 6.92 kg of grain, compared with the farmers’ traditional fertilizing method.

            Reduced  30%   amount of   organic – mineral   fertilizer +  medium and micro-elements adding Humic 5% (HCK + TVL + H 5%)   rice yield  has not decreased significantly  (decreased from 3.25 to 3.79 %, or 292 to 294 kg / ha) compared with 100% fertilizer dose.