PENGARUH PEMBERIAN ZEOLIT TERHADAP EFISIENSI PEMUPUKAN FOSFOR DAN PERTUMBUHAN JAGUNG MANIS DI PASURUAN, JAWA TIMUR

Abstract

The purpose of this study was to show effects of  zeolit application toward efficiency of P fertilizer, P absorbtion and sweet corn growth. This study was conducted at farmer’s land in Bugul Kidul Sub District, Pasuruan of East Java. This study used a randomized block design consisting of twelve treatments with three repetitions. The treatments tested were 0 t zeolit ha^-1 (A0),  4.65 t zeolite  ha^-1 (A1), 9.3 t zeolite ha^-1 (A2), 0 kg SP-36 fertilizer ha^-1 (F0), 75 kg SP-36 fertilizer ha^-1 (F1), 150 kg SP-36 fertilizer ha^-1 (F2), and 225 kg SP-36 fertilizer ha^-1 (F3). The results showed that zeolite influenced the efficiency of P fertilization. The extending of 9.6 t zeolite ha^-1 with combination of 150 kg SP-36 fertilizer ha^-1 had efficiency of P fertilization of 65 %. The utilizing of 9.3 t zeolite ha^-1 and 150 kg SP-36 fertilizer ha^-1 increased plant height up to 34.8 %, plant fresh weight increased up to 95.7 % and plant dry weight up to 98 %. Those results showed that application of zeolite improved P fertilization efficiency, P absorbtion and sweet corn growth