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All Journal Berkala Ilmiah Pertanian TERRA : Journal of Land Restoration
Elfarisna
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Environmental Science

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Efficiency of Inorganic Fertilizer Utilization with Biofertilizer on the Growth and Production of Soybeans (Glycine max (L). Merrill.) Rahmayuni, Erlina; Mayangsari; Herman, Welly; Elfarisna; Putri, Elsa Lolita
TERRA : Journal of Land Restoration Vol. 6 No. 2 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.6.2.94-99

Abstract

Soybeans (Glycine max (L). Merrill.) are an important source of protein in Indonesia whose supply is still very low. One of the causes is low soil fertility so it needs to be fertilized. Continuous fertilization using inorganic fertilizers turns out to have a sustainable effect, namely increasing soil damage, so it needs to be made more efficient with biological fertilizers. The research aims to determine the response of soybean plants to the application of biological fertilizer as an efficient use of inorganics. The research was carried out in Lengkong Poncol Village RT/RW 001/011 Wetan, Serpong District, South Tangerang at an altitude of ± 25 m above sea level from January 2020 to April 2020. The research used a randomized complete group design (RKLT) with five treatments, as follows: NPK 100%, NPK 75% + Biofertilizer 100 ml, NPK 50% + Biofertilizer 100 ml, NPK 25% + Biofertilizer 100 ml, and Biofertilizer 100 ml. Observations were made on plant growth and soil analysis. The results of the research showed that the use of biological fertilizer to make the use of NPK fertilizer more efficient did not have a real effect on plant growth. It can be seen that the use of biological fertilizer by making NPK fertilizer more efficient gave the same results as using 100% NPK fertilizer and using 75% NPK fertilizer + fertilizer. biological 100 ml/plant affects plant height, pH value, and soil nitrogen content.
Evaluation of the Fertility Status of Rice Fields in Giri Jaya Village, Nagrak District, Sukabumi Regency Rahmayuni, Erlina; Elfarisna; Herman, Welly; Putri, Elsa Lolita; Kurniati
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.42-47

Abstract

The research comprises three stages, which include: Field research, Laboratory research, encompassing the analysis of soil chemical properties. Data analysis, conducted both descriptively and quantitatively. Composite soil samples from rice fields were collected at three different elevations (top, middle, and bottom) at a depth of 1-20 cm in the surface layer of the rice field soil. Analysis of paddy soil samples involved measuring pH H2O using the electrometric method, total N, and cation exchange capacity (CEC) using the titrimetric method, potential K2O using the flame photometric method, potential P2O5 and organic C using the spectrophotometric method, K exchangeability and Na exchangeability using the flame photometric method, and Ca exchangeability and Mg exchangeability using the AAS method. Data obtained from soil analysis at different elevations were compared based on soil type for each observed parameter. The research results indicate that the evaluation of nutrient status is influenced by altitude. Land situated at lower elevations exhibits better soil fertility status, followed by land at the upper and middle elevations.
Pemanfaatan Biochar Tempurung Kelapa terhadap Pertumbuhan dan Produksi Kailan (Brassica oleracea L.) Erlina Rahmayuni; Lilik Yulianti; Elfarisna; Welly Herman
Berkala Ilmiah Pertanian Vol. 8 No. 3 (2025): Agustus 2025
Publisher : Jember University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bip.v8i3.53715

Abstract

Kailan (Brassica oleracea L.) merupakan sayuran daun bernilai ekonomi tinggi yang banyak dibudidayakan. Namun, produktivitasnya sering terhambat oleh penurunan kualitas tanah akibat penggunaan pupuk sintesis secara berlebihan. Biochar sebagai bahan organik hasil pirolisis biomassa, berpotensi memperbaiki sifat fisik, kimia, dan biologi tanah, sehingga dapat digunakan sebagai alternatif dalam sistem budidaya berkelanjutan. Penelitian ini bertujuan untuk mengevaluasi pengaruh pemberian biochar tempurung kelapa yang dikombinasikan dengan 50% pupuk NPK terhadap pertumbuhan dan hasil tanaman kailan, serta menentukan dosis biochar yang optimal. Penelitian dilaksanakan pada bulan Oktober hingga Desember 2024 menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dengan lima perlakuan dan lima ulangan. Perlakuan terdiri atas P0 (100% NPK), P1 (50% NPK + 120 g biochar), P2 (50% NPK + 240 g), P3 (50% NPK + 360 g), dan P4 (50% NPK + 480 g) per polybag. Hasil penelitian menunjukkan bahwa perlakuan 50% NPK + 120 g biochar memberikan hasil terbaik pada tinggi tanaman (27,41 cm), jumlah daun (8,87 helai), panjang akar (11,63 cm), dan bobot basah (32,87 g), serta estimasi produksi 3,65 ton/ha. Sementara itu, peningkatan dosis biochar di atas 240 g tidak memberikan hasil lebih tinggi. Kesimpulannya, kombinasi 50% pupuk NPK dan 120 g biochar tempurung kelapa merupakan perlakuan paling efisien dalam meningkatkan pertumbuhan dan hasil tanaman kailan serta mendukung praktik pertanian berkelanjutan.
Co-Authors Erlina Rahmayuni Erlina Rahmayuni, Erlina Herman, Welly Kurniati Lilik Yulianti Mayangsari Putri, Elsa Lolita Welly Herman