THE EFFECT OF FERTILIZER AND VARIETY ON MAIZE PRODUCTION IN TWO TILLAGE SYSTEMS IN NORTH SUMATERA
Setia Sari Br. Girsang, Erpina Delina Manurung, Dorkas Parhusip

Assessment Institute for Agricultural Technology North Sumatra


Abstract

Maize is the second crucial food crop commodity that has great potential to develop in North Sumatra. The objective of the study is to determine maize production is influenced by fertilization and varieties under three tillage system. The experiment is conducted in Batu Mamak Village, Karo Regency period March-August 2019. The three factorial experiments are tillage system (reduced and non-tillage), fertilization (farmers practice, site-specific nutrient management on maize kit, and soil test kit), and varieties (Bima 2, Bima 20, JH-27, Nasa-29, NK- 22, P23). Each treatment is replicated four times using a split-plot design with a plot size is 25 m2. The result showed that full tillage using NK-22 and site-specific nutrient management kit is the highest production of 8 t ha-1 wherein 13.8% higher than farmers^ practice. This is supported by SPAD, biomass, Ksat, and Bulk Density.

Keywords: Maize yield, variety, fertilization, tillage, Ksat

Topic: Crop Production and Environment

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