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Differences in Biochar Sources for Controlled Nitrogen Loss in a Hybrid Maize Agroforestry System with Melaleuca cajuputi Dody Kastono; Priyono Suryanto; Rohlan Rogomulyo; Suci Handayani; Supriyanta Supriyanta; Muhammad Habib Widyawan; Taufan Alam
Journal of Engineering and Technological Sciences Vol. 54 No. 1 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.1.9

Biochar is used to improve soil fertility and control nitrogen loss in soil. This study aimed to evaluate the difference between biochar sources, namely Melaleuca cajuputi waste and rice husk, for controlled nitrogen loss in hybrid maize planted between Melaleuca cajuputi stands. A split-plot design with three replications was used. The main plot was composed of biochar sources (BS), i.e., without biochar application (WB), Melaleuca cajuputi biochar (MCB), and rice husk biochar (RHB). The subplot was the urea fertilizer dosage, i.e., 0, 150, 300, and 450 kg/ha. The observation parameters were nitrate reductase activity (NRA), total chlorophyll (TC), leaf photosynthesis rate (LPR), nitrogen loss (NL), nitrogen use efficiency (NUE), and seed yield per hectare (SY). The data were analyzed with ANCOVA and LS-means. The results showed that there was no significant difference between mixing MCB or RHB in UF for all hybrid maize parameters, whereas significant differences were observed with WB. The NL values of MCB and RHB were 13.85 and 13.08 kg/ha N, i.e., NL was significantly reduced by 70.90% and 72.51%, and the percentage of SY increased by 28.60% and 37.94% compared to WB, respectively.

Pengaruh Model Pemanenan Air Hujan terhadap Pertumbuhan dan Hasil Empat Kultivar Padi (Oryza sativa L.) dalam Sistem Agroforestri dengan Kayu Putih (Melaleuca cajuputi L.) pada Musim Hujan Rochmad Nur Nadif; Dody Kastono; Suci Handayani; Taufan Alam
Vegetalika Vol 10, No 4 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/veg.60049

Permasalahan lahan kering di bawah tegakan kayu putih untuk budidaya padi adalah keterbatasan kandungan lengas tanah yang tergantung pada curah hujan. Tujuan penelitian adalah mempelajari pengaruh model pemanenan air hujan terhadap pertumbuhan dan hasil empat kultivar padi dalam sistem agroforestri dengan kayu putih. Penelitian dilaksanakan pada bulan November-April 2020 di Resort Pengelolaan Hutan (RPH) Menggoran, Bagian Daerah Hutan (BDH) Playen, Kesatuan Pengelolaan Hutan dan Pemangku Hutan (KPH) Yogyakarta. Penelitian dirancang dengan menggunakan rancangan petak terbagi (split plot) tiga ulangan. Petak utama (main plot) adalah model pemanenan air hujan terdiri dari tanpa parit + tanpa serasah organik (P0), parit + serasah organik (P1), dan parit + serasah organik + biopori (P2). Anak petak (sub plot) yaitu kultivar padi yang terdiri atas Situ Patenggang (V1), GM 2 (V2), GM 8 (V3), dan GM 28 (V4). Hasil penelitian menunjukkan bahwa perlakuan parit + serasah organik + biopori meningkatkan produktivitas padi sebesar 11,02 % dibandingkan tanpa parit + tanpa serasah organik. Kultivar padi Situ Patenggang menghasilkan produktivitas sebesar 3,03 ton/ha atau lebih tinggi dibandingkan kultivar GM 2, GM 28, dan GM 8 sebesar 2,92 ton/ha, 2,86 ton/ha, dan 2,42 ton/ha.

Growth and Yield Response of Maize (Zea mays L.) on Acid Soil to Different Rates of Humic Acid and NPK Fertilizer Putri Wulandari; Endang Sulistyaningsih; Suci Handayani; Benito Heru Purwanto
Jurnal Ilmu Pertanian Vol 4, No 2 (2019): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

The main constraint in the extensification of maize on the dry land of acid soil is the low availability of P in soil. This study aimed to determine the effect and the optimal dose of humic acid on the growth and yield of maize on acid soil. This research was conducted from February to May 2017 at Tri Dharma Field Laboratory, Faculty of Agriculture, Gadjah Mada University. Acid soil with low P availability used was from sub-district Cigudeg and Jasinga, West Java. The research was arranged in Randomized Complete Block Design (RCBD) with 2 factors. The first factor was maize cultivar, namely Bisi 2 and Pioneer 35. The second factor was the rate of humic acid and NPK fertilizer, consisting of 0 kg.ha-1 (without) NPK and 0% (without) humic acid, NPK + 0% (without) humic acid, NPK + 5% humic acid, NPK + 10% humic acid, and NPK + 15% humic acid. NPK fertilizer applied was NPK 16:16:16 at a dose of 350 kg.ha-1. The results showed that humic acid application on acid soil increased C-humic content in the soil, soil P availability, total dry weight of the plant, and kernel dry weight at harvest (15 weeks after planting). The increase in soil P availability did not improve the plant growth but increased the accumulation of plant biomass. The application of humic acid at 15% (52.5 kg.ha-1) combined with NPK fertilizer on acid soil significantly increased total dry weight of plant and kernel dry weight up to 13.14% and 21.81%, respectively, thus, it is recommended for maize cultivation on acid soil.

Perubahan Sifat Kimia Entisol Pada Sistem Pertanian Organik Sri Nuryani H. Utami; Suci Handayani
Jurnal Ilmu Pertanian Vol 10, No 2 (2003): Desember
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.59030

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Growth and Yield Response of Maize (Zea mays L.) on Acid Soil to Different Rates of Humic Acid and NPK Fertilizer Putri Wulandari; Endang Sulistyaningsih; Suci Handayani; Benito Heru Purwanto
Jurnal Ilmu Pertanian Vol 4, No 2 (2019): August
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.36680

The main constraint in the extensification of maize on the dry land of acid soil is the low availability of P in soil. This study aimed to determine the effect and the optimal dose of humic acid on the growth and yield of maize on acid soil. This research was conducted from February to May 2017 at Tri Dharma Field Laboratory, Faculty of Agriculture, Gadjah Mada University. Acid soil with low P availability used was from sub-district Cigudeg and Jasinga, West Java. The research was arranged in Randomized Complete Block Design (RCBD) with 2 factors. The first factor was maize cultivar, namely Bisi 2 and Pioneer 35. The second factor was the rate of humic acid and NPK fertilizer, consisting of 0 kg.ha-1 (without) NPK and 0% (without) humic acid, NPK + 0% (without) humic acid, NPK + 5% humic acid, NPK + 10% humic acid, and NPK + 15% humic acid. NPK fertilizer applied was NPK 16:16:16 at a dose of 350 kg.ha-1. The results showed that humic acid application on acid soil increased C-humic content in the soil, soil P availability, total dry weight of the plant, and kernel dry weight at harvest (15 weeks after planting). The increase in soil P availability did not improve the plant growth but increased the accumulation of plant biomass. The application of humic acid at 15% (52.5 kg.ha-1) combined with NPK fertilizer on acid soil significantly increased total dry weight of plant and kernel dry weight up to 13.14% and 21.81%, respectively, thus, it is recommended for maize cultivation on acid soil.

Perubahan Sifat Kimia Entisol Pada Sistem Pertanian Organik Sri Nuryani H. Utami; Suci Handayani
Jurnal Ilmu Pertanian Vol 10, No 2 (2003): Desember
Publisher : Faculty of Agriculture, Universitas Gadjah Mada jointly with PISPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ipas.59030

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