Influences of Urea and Za Fertilizers to Soil Chemical Properties, N Uptake and Sugarcane Growth in Ultisols Seputih Mataram, Lampung
Penulis/Author
Wan Tarmizi (1); Prof. Dr. Ir. Sri Nuryani Hidayah Utami, M.P., M.Sc. (2); Dr. Ir. Eko Hanudin, M.P., IPU, ASEAN Eng (3)
Tanggal/Date
2019
Kata Kunci/Keyword
Abstrak/Abstract
Nitrogen fertilizer efficiency besides being influenced by soil type is also influenced by the type of fertilizer as the N source. The objective of this research was to find out the influences of Urea and ZA fertilizers to soil chemical properties, N uptake and sugarcane growth in Seputih Mataram Ultisols in Lampung.The experiment was conducted in a completely randomized design in 2 factors and 3 blocks for repetitions. The first factor was the sugarcane varieties; TC-09 (V1) variety and TC-15 (V2) sugarcane variety. The second factor was fertilizer doses and combinations in 7 levels: 0 kg N ha-1 or without N fertilizer (N0); 100% of urea fertilizer from total of standard dosage of SGC (151 kgs of N ha-1), which is 328 kg Urea ha-1 (N1); 86% urea and 14 % ZAor 283 kg urea ha-1 and 100 kg ZAha-1 (N2); 75 % urea and 25 % ZAor 246 kg urea ha-1 and 100 kg ZAha-1 (N3); 50 % urea and 50 % ZAor 164 kg urea ha-1 and 360 kg ZAha-1 (N4); 25 % urea and 75 % ZAor 82 kg urea ha-1 and 539 kg ZA ha-1 (N5); and 100 % ZA fertilizer of 719 kg ZA ha-1 (N6). This results showed that Urea at the dosage of 328 without ZA is the most effective and economist combination to increase the weight of sugarcaneper hectare, N uptake of plants, and N efficiency uptake of plants. Additional dosage of ZA decreased the soil pH. The study also showed the weight and amount of population per hectare of TC 15 variety are higher than TC 09 variety
