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All Journal Vegetalika Jurnal Ilmu Pertanian Journal of Engineering and Technological Sciences jurnal Ilmu Pertanian (Agricultural Science)
Suci Handayani
Departemen Tanah, Fakultas Pertanian, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Engineering

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Journal : Jurnal Ilmu Pertanian

 1 
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 | Full PDF (268.804 KB) | DOI: 10.22146/ipas.36680

Abstract

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

Abstract

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Co-Authors Benito Heru Purwanto Dody Kastono Endang Sulistyaningsih Muhammad Habib Widyawan Priyono Suryanto Putri Wulandari Rochmad Nur Nadif Rohlan Rogomulyo Sri Nuryani H. Utami Supriyanta Supriyanta Taufan Alam