Effectiveness of Dolomite on Growth and Yield of Maize (Zea mays l.) in Dry Land

Abstract

The study had been conducted in dry land a site in East Java was in Kediri District during the rainy season I, 2018-2019. The research was designed in RBD, 4 replicates, and 6 treatments, namely : A = without fertilizer, B = 300 Urea ha-1 + 400 kg NPK Phonska ha-1 (Recommended Rates of Inorganic Fertilizers or RRIF), C = RRIF + 1 ton dolomite ha-1, D = RRIF + 2 tons dolomite ha-1, E = RRIF + 3 tons dolomite ha-1, and F = RRIF + 4 tons dolomite ha-1. Data analysis used ANOVA (Analysis of Variance) and followed by DMRT test 5%. The results showed that the application of RRIF + 4 tons dolomite ha-1 obtained of dry seeds yield of corn 7.68 tons ha-1 (increased of 23.87%) from the RRIF, B/C-ratio 1.73, and R/C-ratio 2.36. Fertilizers treatment F = RRIF + 4 tons dolomite ha-1 showed it effectiveness with effectiveness of 174.4% (RAE > 100%).