Fetriza, Clara (2019) Pengaruh Aplikasi Kompos Serasah Tebu dan Serasah Jagung pada Pertumbuhan, Produksi, dan Serapan Tanaman Sawi (Brassica rapa L.) serta Residu N dan Zn di Tanah Inceptisols. Sarjana thesis, Universitas Brawijaya.
Abstract
Produksi sawi di Kota Malang mengalami penurunan disebabkan karena tanah sebagai media tumbuh tanaman mempunyai pH rendah, N rendah, Zn rendah, C-organik rendah, dan bahan organik rendah. Akibatnya, penyerapan hara makro dan mikro tanaman sawi kurang maksimal sehingga pertumbuhan sawi tidak optimal. Di lain pihak, hasil analisis laboratorium menunjukkan bahwa kompos serasah tebu dan jagung mengandung unsur hara makro dan mikro secara lengkap meskipun dalam jumlah yang relatif kecil (BO 23,79%, N 0,92%, C-organik 13,75%, rasio C/N 14,88, P2O5 0,42%, K2O 1,09%, Ca 1,44%, Mg 0,49%, Fe 4858,7 ppm, Mn 432,1 ppm, Cu 26,8 ppm, dan Zn 231 ppm). Dalam jangka panjang, aplikasi kompos dapat meningkatkan pH tanah, mengurangi dosis pupuk anorganik, dan meningkatkan produksi tanaman pertanian. Tujuan penelitian adalah untuk mengetahui pengaruh aplikasi serasah tebu dan serasah jagung terhadap pertumbuhan, produksi, dan serapan tanaman sawi (Brassica rapa L.) serta residu N dan Zn pada tanah Inceptisols. Penelitian dilakukan di Rumah Kaca (greenhouse) Jurusan Tanah, Fakultas Pertanian, Universitas Brawijaya, Malang pada bulan September 2018 hingga Maret 2019. Parameter pengamatan pada tanah, kompos, dan tanaman terdiri dari pH, C-organik, BO, N-total, Zn-total, LPR, LAB, serapan N, dan serapan Zn. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 6 perlakuan dan diulang sebanyak 4 kali, yaitu P0= kontrol (tanpa kompos), P1= 5 ton/ha kompos, P2= 10 ton/ha kompos, P3= 15 ton/ha kompos, P4= 20 ton/ha kompos, P5= 25 ton/ha kompos. Data diuji dengan dianalisis ragam kemudian dilanjutkan dengan uji Duncan (taraf 5%) dan analisis korelasi. Hasil penelitian menunjukkan bahwa aplikasi kompos tebu dan jagung dengan dosis 25 ton/ha atau setara dengan 54,75 g/polybag menghasilkan laju pertumbuhan relatif sawi, berat segar sawi, dan berat kering sawi tertinggi masing-masing yaitu 0,223 mg/mg/hari, 9100 mg/tanaman, dan 532,5 mg/tanaman. Serapan unsur hara N (24,99 mg/tanaman) dan serapan unsur hara Zn (0,12 mg/tanaman) tertinggi juga dihasilkan dari aplikasi kompos dengan dosis 25 ton/ha. Peningkatan serapan N dan serapan Zn dibandingkan dengan kontrol masing-masing yaitu 136,87% dan 139,58%. Di lain pihak, aplikasi serasah tebu tidak berpengaruh nyata terhadap residu Zn-total tanah, namun berpengaruh terhadap residu N-total tanah.
English Abstract
The production of mustard in Malang City has been decreased, due to soil has low pH, low N, low Zn, low organic carbon, and low organic matter. As a result, the uptake of macro and micro nutrients in mustard plants was not maximum so that the growth of mustard plants is not optimal. On the other hand, the results of laboratory analysis showed that sugarcane and corn litter compost contained complete macro and micro nutrients even in relatively small amounts (23,79% OM, 0,92% N, 13,75% organic C, 14,88 C/N ratio, 0,42% P2O5, 1,09% K2O, 1,44% Ca, 0,49% Mg, 4858,7 ppm Fe, 432,1 ppm Mn, 26,8 ppm Cu, and 231 ppm Zn). In the long term, compost can increase soil pH, reduce dosage of inorganic fertilizer, and increase yield of agricultural crops. The aims of the research was to determine the effect of sugarcane and corn litter compost to increase growth, yield, and uptake of mustard (Brassica rapa L.) with residues of N and Zn in Inceptisols. The research was carried out in the Greenhouse of the Land Resource Management, Faculty of Agriculture, Brawijaya University, Malang from September 2018 to March 2019. Observation parameters on soil, compost, and plant consisted of pH, organic carbon, OM, total N, total Zn, RGR, NAR, N uptake, and Zn uptake. This research used a Completely Randomized Design (CRD) with 6 treatments and 4 replications, the treatments consisted of P0= control (without compost), P1 = 5 tons/ha compost, P2 = 10 tons/ha compost, P3 = 15 tons/ha of compost, P4 = 20 tons/ha of compost, P5 = 25 tons/ha of compost. Data were tested by analysis of variance then followed by Duncan test (level 5%) and correlation analysis. The results showed that the application of sugarcane and corn litter compost with dosage of 25 tons/ha or equivalent to 54.75 g/polybag were obtained the highest of relative growth rate ( 0,223 mg/mg/day), fresh weight of mustard (9100 mg/plant), and dry weight of mustard (532,5 mg/plant) respectively. The highest of N uptake (24,99 mg/plant) and Zn uptake (0,12 mg/plant) were also obtained from the application of compost with dosage of 25 tons/ha. The improvement of N uptake and Zn uptake were compared with controls of 136.87% and 139.58% respectively. On the other hand, the application of sugarcane and corn litter compost did not significanly effect on total Zn soil residues, but is significantly effect on total N soil residues.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FP/2019/170/051906913 |
| Uncontrolled Keywords: | - |
| Subjects: | 600 Technology (Applied sciences) > 633 Field and plantation crops > 633.6 Sugar, syrup, starch crop > 633.61 Sugarcane |
| Divisions: | Fakultas Pertanian > Ilmu Tanah |
| Depositing User: | Endang Susworini |
| Date Deposited: | 10 Aug 2020 06:45 |
| Last Modified: | 10 Aug 2020 06:45 |
| URI: | http://repository.ub.ac.id/id/eprint/173372 |
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