Pemberian Pupuk Kalium pada Sistem Tumpangsari Tanaman Jahe dan Jagung dengan Jarak Tanam Berbeda

Abstract

This research aim was to know the dose of potassium fertilizer and different plantspacing of ginger between corn plants to increase produce the ginger crop and cornwhich conducting at multiple cropping system. This research was conducted usingthe Completelly Randomized Block Design of the planning (RAK) factorial con-sisted of 2 factor and 3 repeated. The first factor was potassium fertilizer including0 kg KCl/ha, 100 kg KCl/ha, 200 kg KCl/ha, and 300 kg KCl/ha. The second factorwas different plant spacing of ginger crop including 25 x 35 cm, 30 x 40 cm, and35 x 45 cm. Every treatment and replication was 2 x 2 m. Parameter observed wereheight of ginger crop and corn crop, relative growth rate of ginger crop and corncrop, number of ginger crop, heavy of wet ginger crop, heavy of dry ginger crop,the time of appear that flower of corn, the wind of corn crop, heavy of dry corncrop, and heavy 100 of grain. Analysis was continued by Duncan New MultipleRange Test the (DNMRT) of level 5 %. Research indicate that the giving of potas-sium fertilizer with dose 100 kg/ha and 25 x 35 cm of ginger crop spacing representthe best treatment to increase produce the ginger of each crop and that the giving ofpotassium fertilizer with dose 300 kg/ha and 30 x 40 cm, 35 x 45 cm represent thebest treatment to increase produce the corn of each crop.