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INDONESIA
Jurnal Ilmiah RESPATI
Published by Universitas Respati Indonesia
ISSN : 14117126     EISSN : 26229471     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Ilmiah Respati (JIR) dengan e-ISSN : 2622-9471 diterbitkan oleh Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), Universitas Respati Indonesia, Jakarta, Jurnal Ilmiah Respati ini terbit dua kali setiap tahun, yakni pada bulan Juni dan bulan Desember.
Arjuna Subject : -
Articles 213 Documents
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Potensi Isolat Rhizobakteri Indigenous dari Rhizosfer Choy sum sebagai Agen Antagonis Phytophthora palmivora dan Colletotrichum gleoeosproioides Pudjiwati, Eko Hary; Zahara, Siti; Saffera, Rani; Risnawati, Risnawati
JURNAL PERTANIAN Vol 16, No 2 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i2.5210

Abstract

Colletotrichum gleoeosproioides merupakan penyebab penyakit antraknosa pada tanaman cabai dan Phytophthora palmivora penyebab busuk buah pada tanaman coklat. Keduanya merupakan patogen penyebab menurunnya produksi tanaman secara kualitas maupun kuantitas. Aplikasi agen hayati sebagai pengendali organisme pengganggu tumbuhan bersifat ramah lingkungan dan dapat mengurangi dampak negatif pestisida kimia. Rizobakteri mempunyai potensi sebagai agen hayati atau agen antagonis apabila mampu menghambat pertumbuhan atau membunuh patogen. Pengujian secara in vitro dilakukan untuk menguji daya hambat sepuluh isolat rizobakteri, yaitu RB1, RB2, RB3, RB4, RB5, RB6, RB7, RB8, RB9 dan RB10 yang berasal dari rizosfer tanaman sawi hijau (choy sum) (Brassica chinensis var. parachinensis), terhadap patogen Phytophthora palmivora dan Colletotrichum gleoeosproioides. Penelitian disusun menggunakan Rancangan Acak Kelompok Lengkap dengan tiga ulangan. Hasil penelitian menunjukkan bahwa persentase penghambatan isolat rizobakteri terhadap fungi C. gleoeosproioides berkisar antara 4,00%-35,79% sedangkan persentase daya hambat terhadap P. palmivora berkisar antara 25,49%-63,61 %. Tingginya daya hambat isolat RB4 terhadap C. gleoeosproioides (35,79%) dan P. palmivora (63,61%), menyebabkan laju pertumbuhan fungi yang terendah, yaitu 0,38 cm/24 jam (C. gleoeosproioides) dan 0,28 cm/24 jam (P. palmivora). Hal ini menunjukkan bahwa isolat RB4 mempunyai potensi menjadi antagonis dibandingkan isolat lainnya meskipun isolat RB4 juga tidak mampu menghasilkan asam sianida (HCN) seperti isolat rizobakteri uji lainnya. Perlu dilakukan pengujian isolat sebagai agen antagonis terhadap patogen lain dan uji lapangan terhadap isolat yang sudah diketahui sebagai agen antagonis. Kata kunci: Agen hayati, fluoresen, fungi, patogen, penghambatan
Persepsi Peternak Terhadap Kinerja Penyuluh di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara Bimolo, Maria Yohana; Simamora, Ture; Matoneng, Ody Wolfrit; Sahala, Josua
JURNAL PERTANIAN Vol 16, No 2 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i2.5933

Abstract

Tujuan dari penelitian ini adalah 1) Untuk mengetahui bagaimana kerakteristik peternak yang ada di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara. 2) Untuk mengetahui bagaimana persepsi peternak terhadap kinerja penyuluh peternakan yang ada di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara. Penelitian ini dilaksanakan pada bulan Agustus sampai dengan bulan September 2024 di kelompok tani yang ada di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara yaitu kelompok tani Oemanu, kelompok tani Tuinbatan dan kelompok tani Moenmuni. Sampel yang menjadi responden dalam penelitian ini adalah para peternak dengan jumlah responden sebanyak 61 responden. Jenis dan sumber data yang digunakan pada penelitian ini adalah data primer dan data sekunder dengan metode pengumpulan data melalui wawancara, kuesioner, observasi, dokumentasi. Berdasarkan hasil penelitian di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara maka disimpulkan bahwa: 1) Karakteristik responden berdasarkan umur peternak terbanyak adalah golongan umur 15-64 tahun dengan jumlah responden 55 orang atau (90,16%). Karakterisik responden berdasarkan tinggkat perndidikan peternak mayoritas berpendidikan dari umur 1-6 tahun dengan jumlah responden 45 orang atau (73,77%). Berdasarkan pengalaman beternak terbanyak adalah 11-15 tahun dengan jumlah responden 33 orang atau (54,09%). Berdasarkan jumlah kepemilikan ternak terdapat 2 golongan jumlah ternak yang tertinggi, yaitu jumlah ternak 5-6 tahun dengan jumlah responden 19 orang atau (31,14%) dan jumlah ternak >6 dengan jumlah responden 19 orang atau (31,14%). Karakteristik responden berdasarkan jumlah tanggungan keluarga terbanyak adalah 5-6 orang dengan jumlah responden 27 orang atau (44,26%). 2) Persepsi peternak terhadap kinerja penyuluh di Desa Oenbit Kecamatan Insana Kabupaten Timor Tengah Utara, disimpulkan bahwa rata-rata peternak berpendapat baik terhadap kinerja penyuluh. Hal ini dapat dilihat dari persepsi peternak terhadap metode dan media dengan jumlah responden 39 orang atau (63,93%), sedangkan berdasarkan persepsi peternak terhadap sarana, prasarana, pembinaan dan motivasi sebanyak 33 orang atau (54,09%) dan sebanyak 56 orang atau (91,80%) yang sangat puas dengan kualitas layanan dari penyuluh. Kata Kunci: Persepsi, Kinerja, Penyuluh, Karakteristik Peternak
Kitosan Sebagai Bahan Edible Coating Buah Stroberi (Fragaria x ananassa) Terhadap Jamur Rhizopus Stolonifer Penyebab Penyakit Busuk Lunak Dewi, Anita; Adhi, Satriyo Restu; Mustikasari, Fauzia
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.6429

Abstract

The soft rot disease caused by the pathogen Rhizopus stolonifer is one of diseases that causes significant losses during the storage and distribution of post-harvest fruit. The purpose of this study is to determine the effectiveness of using chitosan and its various concentrations in reducing soft rot disease in strawberries. The study was conducted in vitro at the Biotechnology Laboratory, Faculty of Agriculture, Universitas Singaperbangsa Karawang, from February to March 2025. The experiment use randomized complete block design with five treatments: control (K0), chitosan 0.5% (K1), chitosan 1% (K2), chitosan 1.5% (K3), fungicide (F) as the positive control, and each treatment was repeated five times with four samples each. The results showed that the 1.5% chitosan treatment (K3) had a significant impact on the disease severity treatments, and significantly affected the weight loss parameter, with the lowest weight loss value compared to other treatments. These findings suggest that chitosan, particularly at the consentration of 1.5%, is effective in controlling soft rot disease in strawberries during storage.
Daya Hambat In Vitro Ekstrak Buah Bintaro (Cerbera manghas L.) terhadap Jamur Penyebab Busuk Akar (Ganoderma sp.) pada Kelapa Sawit Swandi, Fradilla; Febrianti, Febrianti; Salmiyati, Salmiyati; Yani, Dewi Andri
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.5404

Abstract

Ganoderma sp. is a fungal pathogen that causes basal stem rot in oil palm, leading to production losses of up to 80%. One potential method to inhibit fungal growth is the use of plant-based fungicides derived from bintaro fruit (Cerbera manghas L.) extract. This study aims to determine the effective concentration of C. manghas fruit extract for controlling Ganoderma sp., the causal agent of basal stem rot disease in oil palm, under in vitro conditions. The extract was tested at concentrations of 0%, 4%, 6%, 8%, and 10% using a Completely Randomized Design with five treatments and five replications. The extract was prepared using distilled water (simple extraction) and incorporated into PDA medium. Observed parameters included fungal colony area, mycelial dry weight, and mycelial fresh weight. Data were analyzed using analysis of variance (ANOVA), followed by the Least Significant Difference (LSD) test at the 5% significance level. The results indicated that C. manghas fruit extract inhibited the growth of Ganoderma sp. The 6% extract concentration exhibited the highest inhibitory effect, reducing colony area by 15.49%, dry weight by 31.30%, and fresh weight by 30.77%.
Pengaruh Kombinasi Sistem Tanam Non Konvensional dan Cekaman pH Basa Larutan Nutrisi Terhadap Daya Hasil Kubis Bunga (Brassica oleracea L. Var. botrytis) Prayogo, Rynaldi Esa; Laksono, Rommy Andhika; Rahayu, Yayu Sri
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.6100

Abstract

Cauliflower production in Indonesia decreased by 38.79% from 2021 to 2022, partly due to Shrinking agricultural land. Non-conventional cultivation methods, such as wick hydroponics and aeroponics, offer alternative solutions to traditional farming. In addition, one key factor affecting cauliflower yield is abiotic stress, particularly high pH levels in nutrient solutions. This study aims to examine the effect of combining non-conventional growing systems with alkaline pH stress on the growth and yield of cauliflower (Brassica oleracea L. var. botrytis) cultivar Larissa F1 This research used an experimental approach with a single factor Completely Randomized Design (CRD) with six treatments, each replicated four times, resulting in 24 experimental units and a total of 72 plants. The treatments included wick hydroponics and aeroponics under three pH ranges: 6–7, 7–8, and 8–9. Data were analyzed using ANOVA and further tested with Duncan's Multiple Range Test (DMRT) at a 5% significance level. Results showed that wick hydroponics with pH 8–9 produced the highest average leaf count at 14 days after planting (7.5 leaves). Aeroponics with pH 6–7 yielded the highest average leaf count at 42 days after planting (13.8 leaves), and also achieved the greatest average curd height and root length (10 cm and 62.5 cm, respectively), although these were not significantly different from other treatments.
Persepsi Peternak Terhadap Kinerja Penyuluh di Desa Maubesi Kecamatan Insana Tengah Kabupaten Timor Tengah Utara Kosat, Maria Fatima; Simamora, Ture; Neonnub, Jefrianus; Kapitan, Maria Magdalena
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.6095

Abstract

This study aims to determine the characteristics of livestock farmers in Maubesi Village, Insana Tengah District, North Central Timor Regency and to determine the perception of livestock farmers towards the performance of livestock extension workers in Maubesi Village, Insana Tengah District, North Central Timor Regency. This study was conducted from August to September 2024 in 3 Farmer Groups in Maubesi Village. This study was conducted using a survey method and direct observation in the field using a questionnaire with a total of 65 respondents. The sampling method in this study used purposive sampling with the criteria of groups that were active in extension activities. The type of data analysis in this study is descriptive and percentage data analysis with data collection techniques carried out through the distribution of questionnaires in the form of a Likert scale, interviews, observations, and recording. The results of the study can be concluded that the characteristics of respondents based on the age of respondents are dominated by the productive age category (15-60) as many as 44 people (67,7%), the level of education of respondents is dominated by the level of education is still very low or 15 years as many as 44 people (67,7%), livestock ownership of most respondents has livestock of 3 or less as many as 35 people (53.8%) and the number of family dependents is dominated by 3-4 people as many as 25 people (38.5%). Meanwhile, the extension material has a good perception with the very pus and satisfied categories which are more dominant than 65 respondents in Maubesi Village, Insana Tengah District, North Central Timor Regency, so that it helps respondents in managing their livestock, for the media and extension methods, respondents are dominated by the very satisfied category with an average value of 89,7% and the results of the extension worker's performance can be seen from the responsiveness with an average value of 68,8%, responsibility 81,5% and quality of service with an average value of 76,9% carried out by extension workers in Maubesi Village, Insana Tengah District, North Central Timor Regency. The conclusion of this study is that respondents feel very satisfied with the performance of the extension workers.
Artikel Review: Produksi dan Aplikasi α-Amilase Bakteri Psikrofilik di Bidang Pangan Nurjasmi, Reni; Aprilia, Sarah; Ruhimat, Riki; Rahmatullah, Rifki
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.7421

Abstract

Psychrophilic bacteria have been widely found in extreme low-temperature environments such as the Arctic and Antarctic oceans and glacial lakes. Some of these bacteria possess the hydrolytic enzyme α-amylase, which functions to hydrolyze starch into simple sugars such as maltose, maltotriose, and glucose. The structure of psychrophilic α-amylase is highly flexible due to reduced hydrophobic interactions and an increased number of hydrophilic residues. This unique structure allows the enzyme to function optimally at low temperatures, specifically 0–20 °C. High-quality enzymes can be obtained through integrated production stages, including the isolation of psychrophilic bacteria, low-temperature fermentation, and stepwise purification. Response Surface Methodology is often employed to achieve high yet economical enzyme yields. The enzyme isolated from psychrophilic bacteria is purified through ammonium sulfate precipitation, dialysis, and several chromatographic techniques performed sequentially to obtain a pure enzyme ready for characterization. Biochemical characterization reveals high enzyme activity at low temperatures, an optimal pH range of 6.5–8.0, and a strong dependence on calcium ions to maintain structural stability. Kinetic analysis shows that psychrophilic α-amylase has a low Michaelis constant (Km), indicating high substrate affinity that enables optimal performance even when substrate availability is limited. These advantages are widely utilized in various fields, particularly the food-processing industry, such as syrup production, baking, fermented beverages, and frozen-food processing. The ability of α-amylase to function at low temperatures provides significant benefits for food processing because it reduces energy requirements, thereby lowering production costs. The application of psychrophilic α-amylase also offers a promising solution for achieving environmentally friendly food-processing industries.
Pengaruh Pengayaan Jenis Media Tanam Dengan Penambahan Limbah Teh Terhadap Pertumbuhan dan Hasil Tanaman Melon (Cucumis melo L.) Var.Alisha F1 Dengan Sistem Irigasi Tetes Salsabila, Allya; Syah, Bastaman; Laksono, Rommy Andhika
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.6192

Abstract

There was a decline in melon production in 2021–2022 due to suboptimal cultivation practices in land management and limited land availability resulting from the conversion of agricultural land. This issue can be addressed through the use of a hydroponic system and appropriate growing media. This study aimed to determine the best enrichment of growing media with the addition of tea waste to support the growth and yield of melon plants. The research method used was a Completely. The research was conducted using a single-factor Randomized Complete Block Design (RCBD) consisting of 10 treatments, each replicated three times. The treatments included: A (Cocopeat + Zeolite 1:1), B (Cocopeat + Zeolite 1:1 + 100 g Tea Waste), C (Cocopeat + Zeolite 1:1 + 200 g Tea Waste), D (Cocopeat + Zeolite 1:1 + 300 g Tea Waste), E (Cocopeat + Zeolite 1:1 + 400 g Tea Waste), F (Cocopeat + Fern Roots 1:1), G (Cocopeat + Fern Roots 1:1 + 100 g Tea Waste), H (Cocopeat + Fern Roots 1:1 + 200 g Tea Waste), I (Cocopeat + Fern Roots 1:1 + 300 g Tea Waste), and J (Cocopeat + Fern Roots 1:1 + 400 g Tea Waste). The results showed that the enrichment of growing media with tea waste had a significant effect on plant height, leaf number, stem diameter, fruit weight per plant, fruit circumference, flesh thickness, and sweetness level of the melon fruit. The best results were observed in treatment J, which produced the highest values across all parameters, including a plant height of 144.90 cm and a fruit sweetness level of 15.66 °Brix.
Uji Daya Hasil Kubis Bunga (Brassica oleracea L. var. Botrytis) Kultivar Larissa F1 Akibat Kombinasi Sistem Tanam Non Konvensional dan Cekaman pH Asam Larutan Nutrisi Septiawan, Anne Venitya; Laksono, Rommy Andhika; Rahayu, Yayu Sri
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.5825

Abstract

The main issues faced in current cultivation practices are the reduction of available land and the decline in production. One solution is to shift from conventional farming to non-conventional or urban farming systems, such as hydroponic wick systems and aeroponics. The success of hydroponic and aeroponic cultivation is strongly influenced by the plant’s ability to absorb nutrients, particularly the acidity level (pH) of the nutrient solution. This study aims to determine the best combination of non-conventional cultivation systems and acidic pH stress of nutrient solutions on the growth and yield of cauliflower (Brassica oleracea L. var. Botrytis) cultivar Larissa F1. The experiment used a single-factor Randomized Block Design (RBD) consisting of six treatments and four replications: hydroponic wick system + pH 4–5, pH 5–6, pH 6–7, and aeroponics + pH 4–5, pH 5–6, and pH 6–7. Data were analyzed using F-test and Duncan Multiple Range Test (DMRT) at a 5% significance level. The results showed that the combination of cultivation systems and acidic pH significantly affected plant height at 56 DAT, number of leaves at 42 DAT, leaf area, root length, fresh weight, curd diameter, curd height, curd weight, and trimmed curd weight. The best treatment was the wick system with pH 6–7, producing a curd height of 13.6 cm, plant fresh weight of 585.5 g, curd weight of 291.8 g, and trimmed curd weight of 277.6 g.
Saluran Pemasaran Cabai Rawit di Desa Pucuk Kecamatan Dawarblandong Kabupaten Mojokerto Nandika, Septiyan Dwiki; Mubarokah, Mubarokah; Harya, Gyska Indah
JURNAL PERTANIAN Vol 16, No 3 (2025): Jurnal Ilmiah Respati
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jir.v16i3.6421

Abstract

Bird’s eye chili is a high-value horticultural commodity and plays a significant role in supporting farmers' income. Pucuk Village, Dawarblandong District, Mojokerto Regency, is one of the main production areas with high productivity. However, farmers in this area still face marketing issues, particularly long distribution channels and limited access to market price information. This study aims to identify the marketing channels of bird’s eye chili, calculate marketing costs and margins, and analyze efficiency and farmer’s share in each channel. Data were collected from 50 farmers and 14 traders selected purposively. Quantitative analysis was conducted using formulas for margin, marketing costs, efficiency, and farmer’s share. The results revealed three marketing patterns: (1) farmer – retailer –consumer, (2) farmer–collector–retailer–consumer, and (3) farmer–wholesaler–collector – retailer–consumer. The first channel had the highest efficiency and a farmer’s share above 80%. In contrast, the longest channel provided higher margins for intermediaries but reduced the share received by farmers. In conclusion, shorter marketing channels are more efficient and beneficial for farmers. Therefore, strengthening farmer institutions and improving direct access to markets are essential to shorten the distribution chain.

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