EFFECTS OF NANO PAN ORGANIC FOLIAR FERTILIZER ON GROWTH, YIELD AND ECONOMIC EFFICIENCY OF RICE

Abstract

The study was conducted from the Summer-Autumn season of 2021 to the Spring season of 2024 to evaluate the effects of nano PAN organic foliar fertilizer on growth, pest and disease resistance, yield components, actual yield, and economic efficiency of several rice varieties in northern provinces of Vietnam (Ninh Binh, Nam Dinh, Ha Nam, Nghe An, and Ha Tinh). Two treatments were arranged: (1) local basal fertilization combined with foliar application of nano PAN (1 L/ha diluted in 1000 L water, sprayed four times at tillering, panicle initiation, 5% heading, and grain filling), and (2) the control with only basal fertilization. Results from eight crop seasons showed that the application of nano PAN improved plant height, maintained leaf greenness, increased the number of filled grains per panicle, reduced unfilled grain percentage, and lowered the incidence of major pests and diseases. Actual yield increased by 0.6 - 3.25 t/ha (equivalent to 6 - 32.5 quintals/ha), while profit rose by 5.6 - 29.6 million VND/ha compared with the control. In addition, the use of nano PAN reduced chemical fertilizer input, decreased production costs, and mitigated environmental impacts. These findings confirm the effectiveness and potential for large-scale application of nano PAN organic foliar fertilizer in commercial rice production across different ecological regions.