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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan
Abimanyu Dipo Nusantara
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance

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Mekanisme Adaptasi Genotipe Baru Kedelai dalam Mendapatkan Hara Fosfor dari Tanah Mineral Masam Rr. Yudhy Harini Bertham; Abimanyu Dipo Nusantara
Indonesian Journal of Agronomy Vol. 39 No. 1 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (272.129 KB) | DOI: 10.24831/jai.v39i1.13184

Abstract

Phosphate defi ciency is one of the main constraints to increase soybean yield in acid mineral soil. An experiment was conducted with an objective to discover scientifi c base of fertilizer selection based on soybean adaptation mechanism to mitigate P defi ciency in acid mineral soils in Bengkulu Province. A factorial experiment was arranged in a randomized complete block design with four replications. The fi rst factor was soybean genotypes, i.e. Slamet and three new soybean genotypes (NSGs) i.e. 19BE, 25EC and 13ED, and second factor was P fertilization dosages (0 and 400 mg P2O5 kg-1 soil). Soybean was grown in a greenhouse using double pot system. Research results showed that the NSGs had different mechanism in P uptake from soil with high P absorbing capacity compared to Slamet genotype. NSGs translocated more carbon to root, and decreasing of shoot-root ratio, about 66-70%. NSGs 25EC produce more oxalic and malic acid, and 13ED produce more citric acid to obtain same amount of P absorbed by Slamet variety. Under low P, NSGs developed symbioses with mycorrhizal arbuscular fungus, however, only 19BE which increase microbe population in rhizosfer. Phosphosrus fertilization supressed arbuscular mycorrhizal fungus development (15-100%), alkaline phosphatase activity (20-88%), and microbial C biomass (40-71%) in rhizosphere of new soybean genotypes
The Growth Of Oil Palm (Elaeis guineensis Jacq..) On Media Planting In The Form Of Subsoil, Empty Fruit Branch Of Oil Palm (Efbop) Compost And Rice Husks In Main-Nursery Stage Bilman Wilman Simanihuruk; Ismail Ismail; Abimanyu Dipo Nusantara
Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Vol 19 No 2 (2021): Jurnal Agroqua
Publisher : University of Prof. Dr. Hazairin, SH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32663/ja.v19i2.2297

Abstract

The objectives of this research is to determine the composition of the planting media in the form of subsoil, empty fruit branch of oil palm (EFBOP) compost, and rice husks in the main-nursery. This research was conducted from June 2020 to September 2020 on Jl. Ciptabaru, Pematang Governor's Village, Muara Bangkahulu District, Bengkulu City, Bengkulu Province with an altitude of ±10 meters above sea level. This study used a completely randomized design (CRD) with one factor and three replications, which consisted of 11 treatments, namely M0 (100% Topsoil), M1 (100% Subsoil), M2 (80% Subsoil + 20% EFBOP Compost), M3 ( 80% Subsoil + 20% Rice Husk), M4 (60% Subsoil + 20% EFBOP Compost + 20% Rice Husk), M5 (60% Subsoil + 10% EFBOP Compost + 30% Rice Husk), M6 (60% Subsoil + 30 %EFBOP Compost + 10% Rice Husk), M7(60% Subsoil + 40% EFBOP Compost), M8(60% Subsoil + 40% Rice Husk), M9(50% Subsoil + 50% EFBOP Compost), M10 (50% Subsoil + 50% Rice Husk). Data were analized using Analysis of Variance and continued by Duncan’s Multiple Range Test at the 5% significance level. The result showed that the best planting medium is 50% subsoil + 50% EFBOP compost which produces a stem diameter of 51.02 mm, a total leaf area of ??8094.71 cm2, a greenish level of 59.15 , a dry shoot weight of 129.38 g, a dry root weight of 27.53 g.
Co-Authors Bilman Wilman Simanihuruk Ismail Ismail Rr. Yudhy Harini Bertham