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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Journal of Tropical Soils Buletin Iptek Tanaman Pangan Buletin Palawija AGRIVITA, Journal of Agricultural Science Jurnal Ilmiah Administrasi Publik (JI@P)
Andy Wijanarko
Balai Penelitian Tanaman Aneka Kacang dan Umbi Jl. Raya Kendalpayak KM. 8 Malang, Jawa Timur
Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Environmental Science Social Sciences

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Journal : Journal of Tropical Soils

 1 
Land Suitability for Developing Soybean Crops in Bumi Nabung and Rumbia Districts, Central Lampung Sudaryono, .; Prihastuti, .; Wijanarko, Andy
JOURNAL OF TROPICAL SOILS Vol. 16 No. 1: January 2011
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2011.v16i1.85-92

Abstract

Bumi Nabung district consists of 6 villages with a total area of 7,810 ha which are divided into 251 ha of rain fed rice lands, 4,908 ha of dry land, 1,317 ha of lowland, 1,158 ha of yards and 176 ha of others. Rumbia district consists of 14 villages which has a total area of 22,696 ha of land consisting of 2,728 ha of yards, 17,358 ha of dry land, 326 rainfed paddy field, 839 ha of swamp land, 1,470 ha of lowland and 4,232 ha of others. Bumi Nabung and Rumbia districts have a low soil fertility potential that is reflected by the lowof soil pH, CEC, total N, available P, and high level of exchangeable Al and Al saturation. The results assessment based on the physical and chemical characteristics showed that Bumi Nabung district have 5 villages on suitable class S-2 (North Bumi Nabung, East Bumi Nabung, Bumi Nabung Ilir, South Bumi Nabung, and Sri Kencono) and one village New Bumi Nabung has less suitable class S-3. In the Rumbia District, there were 14 villages belonged to suitable class (S-2), namely Reno Basuki, Rekso Binangun, Teluk Dalam Ilir, Rukti Basuki, Restu Baru, Restu Buana, Bina Karya Buana, Bina Karya Putra, Bina Karya Jaya, Bina Karya Utama, Bina Karya Sakti, Joharan, Rantau Jaya Ilir and Rantau Jaya Baru. Bumi Nabung and Rumbia districts have the potential fertility and land suitability for extensification and development of soybean crops. The main technology components to support this program are the use of ameliorant (dolomite and zeolite), the application of organic fertilizers (manure and compost) and inorganic fertilizers (NPK).Keywords: Acid soil, central Lampung, land suitability, soil fertility, soybeans
Variability of Soybean [glycine max (L) Merr] Growth in Relation to Chemical Properties of Ultisol from East Lampung Taufiq, Abdullah; Wijanarko, Andy
JOURNAL OF TROPICAL SOILS Vol. 17 No. 1: Januari 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i1.37-43

Abstract

Acidic dry land in Lampung is potential for soybean development area. Low soybean yield in farmer level is one of factor causing its’ low competitiveness. Soil fertility is the main constrain related to low yield of soybean. Objective of the research was to diagnose a cause of poor soybean growth on dry land Ultisol at Sukadana sub District, East Lampung District. Soil and soybean plant samples were collected from farmers’ field at Sukadana ilir village during planting season April – July year 2010. Plant and soil samples were taken when soybean at R1 stage (starting to bloom) using stratified random sampling method. The result showed that variability of soybean growth on Ultisol at Sukadana, East Lampung related to variability of soil pH, exchangeable Al, exchangeable K, Ca, and Mg. The poor soybean growth was due to low soil pH, high exchangeable Al, low exchangeable K, Ca, and Mg.
Co-Authors . PRIHASTUTI abdullah Taufiq Kuntyastuti, dan Henny Lestari, Sri Ayu Dwi Sudaryono, .