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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Conference on Innovation and Application of Science and Technology (CIASTECH) ZIRAA'AH MAJALAH ILMIAH PERTANIAN Academia Open Agrifarm: Jurnal Ilmu Pertanian Biodiversitas Journal of Biological Diversity
Akhmad Sopian
Universitas Widya Gama Mahakam Samarinda
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Engineering Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Public Health Social Sciences

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Gap analysis of land availability and land needs to identify potential development of agricultural lands in Santan watersheds, East Kalimantan, Indonesia AKHMAD SOPIAN; SIGIT HARDWINARTO; MARLON IVANHOE AIPASSA
Biodiversitas Journal of Biological Diversity Vol. 20 No. 4 (2019)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d200422

Abstract

Abstract. Sopian A, Hardwinarto S, Aipassa MI, Sumaryono. 2019. Gap analysis of land availability and land needs to identify potential development of agricultural lands in Santan watersheds, East Kalimantan, Indonesia. Biodiversitas 20: 1097-1105. Pressures caused by high population growth in various places increase the needs for lands. The aims of this research are to determine the availability and needs of agricultural lands in Santan 1 and Santan 2 watersheds, East Kalimantan, Indonesia as well as to classify land capability which are key aspects in managing land resources. Land availability was determined based on the local actual total production of all commodities, such as agriculture, plantation, and livestock at the sub-district level. Land needs were determined based on the land area required for decent life needs per resident. While land capability was determined using weighting analysis of the limiting factors. Results of this study show that land availability on Santan 1 and Santan 2 watersheds is inadequate to fulfill the needs of inhabitants for agricultural lands. There are 19,053 hectares of lands currently available for agriculture, while there are 56,969 hectares of lands required for agriculture, implying a deficit of 37,916 ha of land. Analysis on land capability shows that lands with eutropepts and tropudults soil with total extent of 16,650,9 hectares are potential to be developed for dryland agriculture, such as seasonal crops, while tropohemist soil is suitable for farmland development, such as lowland rice. The spatial plans in Santan 1 and Santan 2 watersheds do not have adequate lands with agricultural capability since the cultivation areas are situated in VI and VII class with limiting factor of slope and erosion. We find there is undeveloped land in the form of bushes with an extent of 12,989,3 hectares in Santan 1 watershed and 7,055.54 hectares in Santan 2 watershed as potential lands to be developed for dryland agriculture. The results of this study suggest that when establishing neighborhood and hamlet should refer to soil characteristics with certain land capability and cultivation activities not to be done on lands with slopes of >15%.
Effect of Oil Palm Empty Fruit Bunch Biochar and Plant Growth-Promoting Rhizobacteria (PGPR) on the Growth of Maritam (Nephelium ramboutan-ake Leenh.) Seedlings: Pemanfaatan Biochar Tandan Kosong Kelapa Sawit dan Plant Growth-Promoting Rhizobacteria (PGPR) Terhadap Pertumbuhan Bibit Maritam (Nephelium Ramboutan-ake Leenh) Purwati Purwati; Akhmad Sopian; Raisa Intan Felisa
Agrifarm : Jurnal Ilmu Pertanian Vol 15 No 1 (2026): July
Publisher : Universitas Widya Gama Mahakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24903/ajip.v15i1.4046

Abstract

This study aimed to analyze and evaluate the effects of oil palm empty fruit bunch (OPEFB) biochar and Plant Growth-Promoting Rhizobacteria (PGPR) on the growth of maritam (Nephelium ramboutan-ake Leenh.) seedlings, as well as to determine whether the OPEFB biochar and maritam seedlings met the Indonesian National Standard (SNI). The experiment was conducted at the Experimental Field of the Faculty of Agriculture, Widya Gama Mahakam University (UWGM), Samarinda, Indonesia. The study employed a Randomized Complete Block Design (RCBD) with a factorial arrangement and three replications. The first factor was the application rate of OPEFB biochar: b₀ = no biochar (control), b₁ = 300 g plant⁻¹, b₂ = 600 g plant⁻¹, and b₃ = 900 g plant⁻¹. The second factor was the PGPR application rate: p₀ = no PGPR (control), p₁ = 100 mL plant⁻¹, p₂ = 200 mL plant⁻¹, and p₃ = 300 mL plant⁻¹. A total of 36 maritam seedlings were used as experimental units. The observed variables included plant height (cm), stem diameter (mm), and number of leaves. The data were analyzed using analysis of variance (ANOVA), followed by a post hoc multiple comparison test to determine significant differences among treatments. The results showed that OPEFB biochar application significantly affected plant height at one month after planting but had no significant effect on stem diameter or number of leaves. Similarly, PGPR application significantly increased plant height at one month after planting but did not significantly affect stem diameter or number of leaves. The interaction between OPEFB biochar and PGPR significantly affected plant height at three months after planting, whereas no significant interaction was observed for stem diameter or number of leaves.
Co-Authors Abdul Rofik Afrilianus Ferdinan Ahmmad Megananda Patmayoni Hadi Cris Yan Tomy Efta Liwi Engelbertus Huvat Gebi Hiskia Hamidah Heriyadi Iin Arsensi Jarkani Krispina Paput Listher Mada Rannu Mahdalena MARLON IVANHOE AIPASSA Muhammad Riskar Nur Rohmat Amiruddin Qohhar Oktavianus Oktavianus Purwati Raisa Intan Felisa Rika Agustina Rustam Baraq Noor SIGIT HARDWINARTO Siti Mutmainah Tutik Nugrahini Zainudin Zainudin