Jurnal Ilmu Pertanian Indonesia
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Evaluasi Mutu Fisikokimia Beras Hasil Persilangan antara Empat Padi Varietas Unggul dan Padi Liar (Oryza glaberrima dan O. rufipogon)
Full text linkThe physicochemical quality of rice is evaluated to ensure that it is fit for consumption and meets established quality standards. This study aims to analyze the physicochemical properties of rice strains resulting from crosses between four high-yielding varieties of rice and two wild rices so that the appropriate genotype is obtained for the development of quality rice. The research was conducted from November 2019 to March 2020 at the Quality Laboratory, Muara Experimental Garden, Rice Research Center, Bogor. The rice genotypes used were 22 strains resulting from crosses between high-yielding varieties of rice (Ciherang, Inpari 13, Inpari 10, and Situ Bagendit), and wild rice (Oryza glaberrima and O. rufipogon), 4 comparison varieties of crossbred elders, and two comparison varieties of organoleptic tests (Memberamo and IR42). Physical and chemical qualities were observed in terms of grain moisture content, grain density, broken skin rice yield, milled rice yield, head rice yield, rice length, rice shape, and rice liming, amylose content, gelatinization temperature, and organoleptic. The results showed that the strains 44-F-C21, 58-F-C21, and 59-F-C21 provided fairly good rice quality with head rice yields above 80% and higher than their respective elders (Situ Bagendit and Ciherang), and water content below 14%. These strains had characteristic characteristics, namely medium rice form, amylose content of 26.38%, and alkali score of 2-3. Most of these genotypes also exhibited high gelatinization temperatures, medium rice texture, and savory rice flavors. The genotype selected from the results of crosses between high-yielding varieties of rice and wild rice has the potential to be developed because there are genetic improvements from its elders on several physicochemical characteristics of rice.
Keywords: amylose content; gelatinization temperature; physicochemical properties; rice lines; wild ric
Pengendalian Hayati Patogen Fusarium oxysporum f. sp. capsici dengan Isolat Trichoderma sp. Asal Rizosfer Bambu dari Kecamatan Kedu, Kabupaten Temanggung
Full text linkWilt disease caused by Fusarium oxysporum f. sp. Capsici can cause serious problems and reduce red chili yields, so controls are needed that can reduce the development of the pathogen. The purpose of this study was to determine the potential of Trichoderma sp. from the bamboo rhizosphere in Kedu District, Temanggung Regency, in inhibiting the growth of F. oxysporum f. sp. capsici in vitro and in vivo. Trichoderma sp. Was isolated from the rhizosphere of bamboo plants, and F. oxysporum f. sp. capsici was isolated from red chili plants with symptoms of fusarium wilt. Mushroom isolates were purified and identified based on the identification key book. An in vitro test using the double culture method and an in vivo test were conducted in a screen house by applying Trichoderma sp. to the stem of red chili plants. One isolate of Trichoderma sp. was obtained from the soil of the bamboo rhizosphere in the Kedu District, and Fusarium sp. isolates were obtained from the stems of red pepper plants. Based on in vitro antagonist tests, Trichoderma sp. Fungi were able to inhibit the growth of F. Oxysporum f. sp. capsici up to 82.50% at 7 HSI. Trichoderma sp. could inhibit pathogens through antibiotic inhibition mechanisms and competition of nutrients and space to grow. Trichoderma sp. inoculation followed by in vivo inoculation of pathogens on red chili plant stems showed an attack symptom intensity of 4.16% with an antagonistic performance of 75.03% 12 days after inoculation. Trichoderma sp. is effective as an alternative biological control agent for red chili plant disease caused by F. Oxysporum f. sp. capsici.
Keywords: Bamboo Rhizosphere, Fusarium oxysporum f. sp. capsici, Plant Diseases, Trichoderma sp
Optimisasi Waktu Pemanasan Tingkat Kesukaan Kecap Kelapa
Full text linkThis study aims to optimize the heating length in terms of the sensory properties of sweet soy sauce made from coconut water. This experiment used a Complete Randomized Design consisting of 7 treatment levels, with each combination of treatments repeated 3 times so that the total was 21 treatments. It was concluded that the length of heating affects the color, taste, and viscosity of sweet soy sauce. Panelists favored the 160-minute warm-up time in terms of color, taste, and viscosity. The color favorability score was 5.64 (like), taste was 4.87 (somewhat like), viscosity was 5.61 (like), and aroma was 5.27 (somewhat like).
Keywords: organoleptic, length of heating, sweet soy sauc
Rhizophagus intraradices dan Trichoderma asperellum sebagai Bioprotektan dan Biofertilizer pada Bawang Merah TSS
Full text linkTrue shallot seed (TSS) is one of the alternative potential technologies to solve the availability of seed quality on shallot in Indonesia. Another problem in shallot production is infection by purple blotch and twisted disease. This research evaluated the potency of Rhizophagus intraradices and Trichoderma asperellum as bioprotectants and biofertilizer. T. asperellum was mixed in the soil before seedling transplanting, and R. intraradices was applied around the seedling roots at transplanting. The observed parameters were the shallot growth (the plant height, number of leaves, and length of root), plant health (disease incidence and intensity), and bulb resistance to Fusarium solani. The result showed that R. intraradices and T. asperellum increased the resistance of onion bulbs to the pathogen F. solani in the postharvest period, indicated by R. intraradices treatment that had an infection area of 21.99 mm2, followed by T. asperellum treatment 26.63 mm2, and control of 37.66 mm2.
Keywords: Rhizophagus intraradices, Trichoderma asperellum, true shallot see
Selection of Proteolytic Lactic Acid Bacteria with Probiotic Properties for Fish Protein Hydrolyzate Production
Full text linkThis study aimed to select a proteolytic LAB with probiotic properties that can be applied to manufacture protein hydrolysate from fish heads. Tests on 20 isolates of LAB showed that nine isolates were proteolytic and non-pathogenic. A total of 5 isolates could grow well at 0.5% bile salt stress, and 3 of them could grow at pH 3. These three isolates had antagonistic ability against Salmonella bacteria, and one isolate was sensitive to the antibiotic tested. Molecular identification of the selected LAB isolates showed a 100% sequence similarity with Pediococcus pentosaceus with accession number MT515895.1. The LAB isolate has high proteolytic activity since it can increase the soluble fraction of fish meal powder from 32.10% to 88.38% in 48 hr. Production of protein hydrolysate using tuna waste was carried out for 30 days. Tuna waste protein hydrolysate had a medium antioxidant activity of 25.57 ± 0.93%. The hydrolyzed protein comprised 17 amino acids, including nine non-essential and eight essential amino acids, and is dominated by glutamic acid. Selected LAB isolate is potentially used in protein hydrolysate production, especially for flavor enhancers.
Keywords: antagonistic, amino acid, Pediococcus pentosaceu
Application of Lemongrass Oil in Chitosan as Antimicrobial During Storage of Crystal Guava Fruit
Full text linkGuava crystal is a fruit that has a high selling value. One of the obstacles to marketing crystal guava fruit is the fast decay process. Many factors cause fruit to rot quickly, including microbial contamination post-harvesting. This study evaluates the effectiveness of adding lemongrass oil in chitosan coatings to protect crystal guava from microbiological damage during storage. The fruit is coated with 1% chitosan and added to lemongrass oil according to the treatment. The study used a completely randomized design with three replications. The treatment tested included 0.0, 0.1, 0.3, and 0.5% lemongrass oil. The content of lemongrass oil compounds was analyzed using gas chromatography-mass spectroscopy (GC-MS). The antibacterial test was carried out using the disc method. The parameters observed were the total plate count and total fungal count of crystal guava fruit on days 0, 3, 6, 9, 12, 15, and 18 after storage. GC-MS analysis showed that the main content of lemongrass oil is two isomers of citral, i.e., neral (38.54%) and geranial (39.26%). The results showed that the total fungal and plate count increased during storage. Chitosan coating with lemongrass oil more effectively inhibits Staphylococcus aureus than Escherichia coli. Adding 0.3% and 0.5% lemongrass oil in chitosan could restrain the rate of microbes in crystal guava until the 18th day after storage. Chitosan treatment with 0,3% lemongrass oil is recommended to be the best treatment for applying on crystal guava.
Keywords: citral, GC-MS, Psidium guajava L., total plate count, total fungal coun
Composition of Growing Media and Concentration of Foliar Fertilizer Affected Yield and Quality of Purple Eggplant (Solanum melongena L.)
Full text linkThe study aimed to obtain the best combination of growing media composition and the concentration of foliar fertilizer (Gandasil B) on the yield quality of eggplant. The research was conducted from December 2022 to February 2023 in Nganjuk Regency, using a completely randomized design of two factors. The first factor was composition of the growing media, which comprised of soil:husk charcoal:cow manure with ratios of (1:1:1), (1:1:2), (1:2:1), and (2:1:1), and the second factor was the concentration of foliar fertilizer (0, 2, 4, 6 g/L). The results exhibited that the combination of (1:2:1) medium growing composition and the 2 g/L concentration of foliar fertilizer produced the best fruit diameter with an increase of 22.35% compared to the combination of growing media (1:1:1) and concentration of foliar fertilizer of 2 g/L. The composition of the soil growing medium 1:2:1 gave the best results on fruit length and diameter, average fruit weight, and total fruit weight per plant. A quadratic regression analysis of the concentration of foliar fertilizer and the number of purple eggplant fruits showed that the highest concentration of foliar fertilizer was 5.78 g/L.
Keywords: foliar fertilizer, fruit diameter, growing medium, purple eggplan
Kemampuan Kapang Dark Septate Endophyte dari Akar Tanaman Aren dalam Menghambat Ganoderma sp.
Full text linkGanoderma is a fungal pathogen that can cause rot disease at the base of plant stems. This disease threatens oil palm production, especially in Southeast Asia. Trichoderma sp. fungi can control Basal Stem Rot disease in Ganoderma boninense but are ineffective. One solution that can be done to inhibit the growth of Ganoderma sp. is by using Dark Septate Endophyte (DSE) fungi. Research on DSE isolated from sugar palm (Arenga pinnata Merr.) has not been widely studied. The sugar palm plant is related to the oil palm plant in the Arecaceae family. This study aims to analyze the potential of DSE fungi from the roots of the sugar palm plant in inhibiting the pathogenic fungi Ganoderma sp. The stages of this research were isolation and purification of DSE fungi from sugar palm roots, DSE antagonists against Ganoderma sp., and DSE volatile compounds against Ganoderma sp. The results of isolation and purification showed that there were 18 DSE isolates grouped based on morphological similarities in the form of DSE fungi colony colors, where there were ten fungi isolates representing ten different colony colors, namely, isolate A.3.1 (1); A.3.2 (2); A.4.1 (2); A.4.1 (3); A.4.2; A.5.2; A.5.3; A.6.1(a); A.6.2(a); A.6.4(a). A total of 8 fungi isolates were tested for antagonists and volatile compound testing on Ganoderma sp. The results of the antagonist test showed that DSE A4.1(2) had the highest percentage of inhibition with a value of 36.12%, and isolated A6.2 had the highest percentage of inhibition and the lowest with a value of 15.65%. The testing results for volatile compounds showed that the isolate of DSE A4.2 had the highest percentage of inhibition against Ganoderma sp. at 18.25%. In comparison, the lowest inhibition percentage was obtained from DSE A5.2 fungi isolate with a value of 0.43%.
Keywords: dark septate endophyte, ganoderma, sugar palm (Arenga pinnata Merr.
Kinerja Ekonomi Usaha Tani Tanaman Pangan dan Kontribusinya pada Kesejahteraan Petani di Desa Sekitar Kawasan Ekonomi Khusus Mandalika, Kabupaten Lombok Tengah
Full text linkThe Mandalika Special Economic Zone (SEZ) development in West Nusa Tenggara Province aims to accelerate economic growth, especially for people in Pujut District-Central Lombok Regency. This research aims to describe the economic performance of food crop farming in villages around the Mandalika SEZ and its contribution to the economic welfare of farmer households. This research uses descriptive methods, and the data was collected using survey techniques in 3 villages with potential for food crop farming, namely Sengkol, Rembitan, and Sukadana villages. The respondents were 75 farmers. The results showed that food crops in villages around the Mandalika SEZ consist of rice, soybeans, and corn, with low productivity and an R/C ratio of 1.48–2.02. The total income from food crop farming is IDR 7,903,504.28/year or 34.06% of the total household income of farmers. The contribution of food crop farming income to farmer welfare based on the Sajogyo criteria was 41.69%, and based on the World Bank Criteria, it was 18.95%.
Keywords: food crop, farmers welfare, farmer household, special economic zone mandalika, Central Lombo
Peranan Probiotik Lactobacillus plantarum IIA-1A5 dalam Meningkatkan Ketahanan Tubuh, Performa, dan Kualitas Telur Ayam Komersial
Full text linkProbiotics are microorganisms that are non-pathogenic and beneficial for health when used in certain doses through the mechanism of increasing the function of the small intestine in chickens. This study aims to analyze the effect of adding the probiotic Lactobacillus plantarum IIA-1A5 to feed to improve the body\u27s immune system, production performance, and egg quality in laying hens aged 49‒52 weeks. The experimental design used was a Completely Randomized Design (CRD). The treatment for adding the probiotic Lactobacillus plantarum IIA-1A5 to feed consists of four treatment levels, namely P0 (without probiotics), P1 (feed + 8.1 x 106 cfu/g or 1 g/kg feed), P2 (feed + 2.43 x 107 cfu/g or 3 g/kg feed), and P3 (feed + 4.86 x 107 cfu/g or 6 g/kg feed). The results of the study showed that administering the probiotic Lactobacillus plantarum IIA-1A5 in feed could reduce Escherichia coli bacteria in the small intestine of laying hens. Giving the probiotic Lactobacillus plantarum also had a significant effect (P<0.05) on feed consumption and egg yolk color. The addition of the probiotic Lactobacillus plantarum IIA-1A5 in feed can increase animal resistance, performance, and quality of chicken eggs. The use of probiotics with a treatment level of 1 g kg-1 feed (8.1 x 106 cfu g-1) showed the best results.
Keywords: heat stress, laying hens, probioti