Browsing by Author "D. Rusmawan"

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    Soil Chemistry and Yield of Maize as Influenced by Different Levels of Fertilizer in Ex-Tin Land Central Bangka, Kepulauan Bangka Belitung
    (Badan Penelitian dan Pengembangan Pertanian, 2013) Asmarhansyah; D. Rusmawan; Muzammil
    Kepulauan Bangka Belitung is one of the world’s main tin-producing centers. Ex-tin lands have low soil fertility status, but these lands have a potency to be used as agricultural lands through fertilizing. The aim of this study was to study the influence of fertilizer application on soil chemistry and yield of maize in ex-tins mining lands Central Bangka, Kepulauan Bangka Belitung. The study was done in ex-tin mining land in Perlang Village Central Bangka, Kepulauan Bangka Belitung and was arranged in randomized block design with 3 (three) treatments and replicated 3 (three) times. The treatments were (1) urea: 200, SP-36: 150, KCl: 100 kg/ha; (2) urea: 250, SP-36: 150, KCl: 100 kg/ha, and (3) urea: 300, SP-36: 200, KCl: 150 kg/ha. The maize variety used was Lagaligo. The results showed that the application of fertlizer increased the soil chemistry properties of ex-tin mining land, namely total-N, soil P, and soil K. The increasing of fertilizer rate significantly increased the growth and yield of maize. The application of urea: 300, SP-36: 200, KCl: 150 kg/ha gave the highest yield of maize (4.43 t/ha).