BIOEDUSCIENCE

Petengoran Mangrove Forest, Pesawaran: Ecological and Ethnocentric Studies

Adinda Rahmadini — 2024-12-17

Background: Mangrove environments play an essential function in coastal tidal areas. Petengoran mangrove forest is located in Gebang village, Teluk Pandan district, Pesawaran, Lampung province. Describe the ecological and ethnocentric conditions of the Petengora mangrove forest in Gebang village, linked to mangrove vegetation to facilitate forest maintenance, community empowerment, and community impacts on Petengoran mangroves. Methods: This research uses the transect method at three stations with four plots. Each plot had an area of 10 x 10 m2. Ethnocentric data collection was conducted using questionnaires and field observations. Results: INP of Rhizopora mucronata was the highest (300%). The station's overall diversity level (H') is medium. The specific richness index (R) of all stations is low. All stations' uniformity index (E) is high, as shown by findings from community interviews on ethnocentric elements of Petengoran mangrove ecotourism. The environmental conditions of the mangrove forests are relatively clean and maintained, and the infrastructure and ecotourism infrastructure are pretty adequate. Conclusions: Petengora mangroves are managed by farmers who create nurseries and plantations. This area is a mangrove reserve. The mangrove forest is considered a traditional place, but surrounding communities do not have any unique traditions.

The Effect of Adding Silk Worms (Tubifex tubifex) Feed on the Growth of Jelawat Fish (Leptobabus hoevenii [Bleeke, 1851])

Nesty Apulina Br Ginting — 2024-08-30

Background: This study aims to determine the effect of growth of Jelawat fish given additional feed silkworm and pellets. Method: This study used Complete Randomized Design (RAL) with four treatments, five repeats. L. hoevenii were kept for 28 days with a countainer box with the same quality and quantity of water. Measurements are taken once every 2 weeks. Analysis of variance (ANOVA) was carried out on the measurement results, and continued with the Smallest Real Difference (BNT) test. Result: In treatment A with feed (100% pellets) resulted in weight growth (0.5 g), body length (3.4 mm), and body thickness (0.35 mm). In treatment B with feeding (Pellets 25% + T.tubifex 75%) resulted in weight growth (1.02 g), body length (24.6 mm), and body thickness (2.84 mm). In treatment C with feed (Pellets 50% +T.tubifex 50%) resulted in weight growth (0.54 g), body length (9.6 mm), and body thickness (1.71 mm). In treatment D with feeding (Pellets 75% + T.tubifex 25%) resulted in weight growth (0.34 g), body length (9.0 mm), and body thickness (1.37 mm). Conclusion: The addition of T. tubifex feed can have an influence on the growth of L. Hoevenii and the best treatment to produce good fish growth in this study is found in the B treatment given feed (Pellets 25% + T.Tubifex 75%) resulting in the highest growth with body weight growth (1.02 g), body length (24.6 mm), and body thickness (2.84) mm.

Effect Of Vegetable Waste Feed On Protein Levels Of BSF Maggots (Hermetia illucens)

Jernia Rulintan Sitorus — 2024-08-31

Background: A BSF maggot (Hermetia illucens) is an organism that can live in waste media because maggots eat and decompose organic materials or waste for their growth. One innovative way to break down several types of organic waste, including vegetable waste, is to use maggots. This research aimed to analyze the effect of vegetable waste feed on maggots’ mass, length, thickness, and protein content. Methods: This research experimented with a completely randomized design (CRD) with five treatments, three repetitions of each treatment with various feed varieties. Analysis of maggot protein levels using the Automatic Kjeldahl method. The parameters measured were the maggot’s mass, length, thickness, and protein content. The variable in this research is the experimental variable for maggot samples with variations in the types of cabbage and mustard greens waste food. The number of samples used was 30 samples for each treatment. The data were analyzed using ANOVA, and a further BNT test was carried out to determine the natural effect of each treatment. Results: The results of the BNT and protein content test show that vegetable waste food significantly impacts the mass, length, thickness, and protein content of maggots. Conclusion: Feeding vegetable waste affects maggots’ mass, length, thickness, and protein content.

Enhancing the Growth and Yield of Soybean Plants with Plant Growth Promoting Rhizobacteria and Liquid Organic Fertilizer

Achmad Adnan — 2024-08-30

Background: Many organic wastes are currently used as organic fertilizers. Giving organic fertilizer to plants has a very good impact on soil and plants. The combination of LOF and PGPR can certainly increase the growth and production of soybean plants. This research was conducted in Tanjung Sari Village, Rembang, Central Java from November 2021 to January 2022. Analytical activities were carried out at the Land Resources Laboratory, Faculty of Agriculture, National Development University "Veteran" East Java. Method: This research method uses a factorial Completely Randomized Design (CRD) consisting of 9 treatments 3 replicates so that 27 experimental units are obtained. The first factor is PGPR (A), namely A0: Without PGPR A1: Banana Bark, A2: Bamboo Root and the second factor is LOF (B), namely B0: Without LOF B1: Banana stem B2: Bamboo shoots. Result: The results of this study showed that the combination of PGPR + LOF treatments made from local raw materials was effective in helping the growth of soybean plants obtained by the combination A2B2 (PGPR bamboo root + LOF bamboo shoot) with the number of pods 36 pods, and plant height 56.60cm, in terms of c-organic analysis (3.05%), N (0.63%), P (15.37%), K (1.23%). This combination is best because it contains lignocellulase enzyme and growth regulators. Conclusion: The combination of PGPR + local raw material-based LOF is effective in enhancing the growth of soybean plants.

Proximate and Sensory Analysis of Organic Fish Feed Based on Fermented Coconut Flour and Earthworm Flour

Dyah Ayu Lintang Sumunar — 2024-08-31

Background: The main factor influencing the success of fish farming is the quality of the feed given to the fish. However, it should be noted that some commercial fish feeds contain chemicals that can harm fish health. Methods: Proximate tests were carried out with three formula designs, namely formulas A1, A2, and A3, with a ratio of fermented coconut dregs flour and earthworm flour, respectively 1:2, 2:1, and 1:1. Feed sensory tests were also carried out, which included color, aroma, and texture of organic fish feed. The data collected was then analyzed using IBM SPSS Statistics version 23. Results: Proximate test results were the average protein content of fish feed formulas A1, A2, and A3 respectively 10.85%, 16.28%, and 13.07%, while the average carbohydrate content of formula fish feeds A1, A2, and A3 respectively 30.04%, 26.54%, and 27.91%. Meanwhile, the sensory test results for the color of formula feed A1, A2, and A3 had scores of 1.70, respectively, 3.70, and 2.45. The results of the sensory test for the aroma of formula feed A1, A2, and A3 had scores of 2.90 respectively, 3.45 and 3.05, while the results of the sensory test for the texture of formula feed A1, A2, and A3 had scores of 2.20 respectively; 3.40; and 3.30. Conclusions: The most effective feed formula given to fish is formula A2, which has the highest protein content, reaching 16.28%, and carbohydrate content, 26.54%.

The Effect of Concentration of Liquid Organic Fertilizer and Biofertilizer on Growth and Yield of Purple Eggplants (Solanum melongena L.)

Arsarizky Arief — 2024-08-31

Background: The purple eggplant is a vegetable commodity that highly favored by many people due to it is delicious taste and benefical nutrition content for health. The demand of purple eggplants increased significantly every year, but it is often not matched by an increase in production caused by poor cultivation. The increased production can be achieved through several efforts, one of which is fertilization with organic materials. This research aims to determine the optimal combination and concentration of each treatment for the application of liquid organic fertilizer (LOF) and biological fertilizer which can provides the best influence on plant growth and yield of purple eggplant. Methods: This research used a completely randomized design (CRD) consisting of 2 factors. The first factor was the concentration of liquid organic fertilizer (N) divided into 3 levels, consists of 0 ml/l (N0), 4 ml/l (N1), and 8 ml/l (N2). The second factor was the concentration of bio-fertilizer (P) divided into 4 levels, consists of 0 ml/l (P0), 10 ml/l (P1), 20 ml/l (P2) and 30 ml/l (P3). Results: The result indicated that the concentration of 8 ml/l LOF and 30 ml/l bio-fertilizer was able to increase the number of leaves, total flowers per plant, total fruits per plant, and total fruits fresh weight per plant. Conclusions: This Research can be concluded that the concentration of 8 ml/l LOF and 30 ml/l bio-fertilizer gave the best effect on purple eggplants.

Application of Biopesticide Fobio Against Moler Disease (Fusarium oxysporum) on Three Varieties of Shallots in Probolinggo City

Yola Salsabila Shafa — 2024-08-30

Background: Shallots (Allium Ascolonicum L). is a seasonal crop that is widely grown by farmers intensively. Although the demand for productivity of this crop continues to increase, domestic production is still not enough to meet market demand because shallots are a seasonal crop. The low productivity of onion plants can be influenced by various factors, one of which is Fusarium attack, which if not controlled can cause crop failure. The use of chemical pesticides to control Fusarium sp. often causes dependence and pollution, so alternative controls are needed. The purpose of this study was to determine the potential of Fobio Biopesticide against three onion varieties in increasing growth and reducing the intensity of Fusarium sp. attack.Method: The method used is RAKF with a factor of 1 consisting of three varieties of shallots (Biru Lancor, Tajuk, and Batu Ijo), factor 2 in the form of farmer treatment and concentration levels of Biopesticide Fobio 5 and 10 ml / l. Results: The results showed that treatment with a concentration of Biopesticide Fobio 5 ml / l and Blue Lancor varieties was able to increase the best results in various variables such as plant height, wet weight, dry weight, disease intensity, and incubation period. Conclusion: Based on the research that has been done, it can be concluded that Fobio Biopesticide has the capacity to increase the resistance of onion plants to moler disease. Treatment with Biopestiisda Fobio concentration of 5 ml / l in the Lancor Blue onion variety showed the best results in various variables compared to other treatments, it was shown an increase in plant height up to 5 – 6 cm, wet weight up to 2.8 g / tuber, dry weight up to 1.7 g / tuber, disease intensity up to 8% at 42 HST, and the longest incubation period up to 23 days.

Keywords: Shallot, Biopesticide Fobio, Fusarium sp.