Effect Of NPK Fertilizers Supplemented With Nanozyme On Growth, Yield, And Economic Efficiency On Biomass Maize

Nguyen Thanh Phuong¹,*, Le Quoc Phong², Pham Phu Hung², Nguyen Ngoc Thach², Luu Huu Phuoc², Dang Ngoc Tuan², Nguyen Tran Thuy Tien³, Nguyen Hoa Han³, Le Tri Hieu⁴,**,

¹Quang Trung University, Vietnam;

²Binhdinh Agricultural Technical Materials Joint Stock Company, Vietnam,

³Agricultural Sciences Institute for Southern Coastal Central of Vietnam,

⁴Institute of Engineering, Ho Chi Minh University of Technology (HUTECH), Ho Chi Minh City 700000, Vietnam.

*ntphuong@qtu.edu.vn; **lt.hieu89@hutech.edu.vn

Abstract. Large-scale trial with 3 treatments in Binh Dinh province in the summer-autumn crop 2023: (i) T1 (Control): NPK16-16-8 fertilizer, apply once in the 5-leaf maize stage, the amount of application is 1,000 kg/ha; (ii) T2: NPK fertilizer with Eco-nanomix (NPK 18-14-6 + 6S Eco-nanomix), apply once at the stage of 5-leaf maize, the amount of application is 1,000 kg/ha; (iii) T3: NPK fertilizer with Eco-nanomix (NPK 18-14-6 + 6S Eco-nanomix and NPK 16-6-18 + 1Mg Eco-nanomix), apply 2 times, the first time apply to 5-leaf maize stage with the amount of 720 kg/ha NPK 18-14-6 + 6S Eco-nanomix, the second time fertilizes the stage of 8-10 leaves corn with the amount of 280 kg/ha NPK 16-6-18 + 1Mg Eco-nanomix. After 80 days of planting, the results showed that T2 had the highest biomass yield, reached 72.51 tons/ha and increased by 9.51 tons/ha, equivalent to an increase of 15.1% compared to the control, the profit of T2 was 40,031 million VND/ha, 10,311 million VND/ha higher than the control, equivalent to 34.7% increase. It is recommended to use NPK 18-14-6 + 6S + trace element (TE) fertilizer with Eco-nanomix once at the 5-leaf maize stage in biomass maize production instead of conventional NPK fertilizers in areas with similar conditions.

Keywords: Biomass maize, Eco-nanomix, NPK fertilizer, nanozyme, one-time fertilizing.

(On Jan 09^th, 2024: Accepted for publication in the forthcoming issue of Vietnam National University Press, Ho Chi Minh City under the title: Proceeding of the 16^th Asian Congress on Biotechnology (ACB) 2023, ISBN number: 978-604-479-343-6).