Authors:Gebeyehu Tegenu Abstract: Onion is one of vegetable crops grown under irrigation. In order to improve crop production and productivity irrigation is the only solution for contributing towards food security, self-sufficiency and export market.. The Experiment was conducted in Debre Zeit Agricultural Research Center with determination of optimal balanced fertilizer rate and irrigation scheduling for Onion under Vertisol soil type to determine the optimum rate of balanced fertilizers and irrigation intervals and identify the interactive effect of nutrient and moisture levels on yield and yield quality of onion.The experimental treatments had three irrigation intervals, viz., 80%MAD, 100%MAD and 120%MAD and three Fertilizer rates of application, viz., 100kgha-1NPSB, 150kgha-1NPSB and 200kgha-1, and a control fertilizer rate of 100kgha-1 urea. The design of the experimental plot was split plot in RCBD arrangement. The experimental study result showed that Crop Growth and Physiology Parameters, Yield Parameters and Water productivity had no significance difference under blended fertilizer rate application. But in irrigation intervals plant height, marketable yield and total bulb yield of onion was significantly affected. The highest total bulb yield of onion was recorded on the control irrigation (100% MAD) of the interval. Keywords: Blended fertilizer, Onion, Manageable Allowable Depletion (MAD), Irrigation Scheduling. DOI : 10.7176/JNSR/14-4-02 Publication date: February 28th 2023 Issue No:Vol. 14
Authors:Fatmawati ., Untung Bijaksana, Hasmadi . Abstract: Climbing perch called Papuyu fish in South Kalimantan Indonesia caught in swamp waters, is a fish that is very popular with the community and has high economic value. Fish reproductive performance is very important to obtain information on the natural conditions of the reproductive status of climbing perch fish in the form of gonadal maturity level, and fecundity. This research aims to analyze the reproductive performance of climbing perch fish based on the level of gonadal maturity, gonadal maturity index and fecundity of climbing perch fish (Anabas testudineus Bloch). The method used in this study was descriptive quantitative. Starting from the preparation of tools and materials, the measurement of fish reproductive parameters including gonadal maturity level, gonadosomatic index and reproductive fecundity were observed morphologically and analyzed descriptively. The results of the study, reproductive performance, the maturity levels of the gonads ranged from TKG II, TKG III and TKG IV. The gonadosomatic index ranged from 0.995-11.147%. are within the range of IKG values of climbing perch fish. Fecundity in sample A ranged from 10,098-39,303 eggs with an average of 24,816 eggs and a gonad weight of 2.97g. Sample B ranged from 14,800-62,381 eggs with an average of 34,767 eggs with a gonad weight of 4.47g. Keywords: Reproduction, Climbing perch, gonads, fecundity. DOI : 10.7176/JNSR/14-4-03 Publication date: February 28th 2023 Issue No:Vol. 14
Authors:Pawan Khanal, Dikshya Shilpakar, Dambar Bahadur Khadka, Om Prakash Panta, Pramod Poudel, Bunty Maskey Abstract: This research is undertaken to study the probiotic potential of lactic acid bacteria (LAB) isolated from theki dahi of Pokhara valley. A total of 48 samples were collected, pooled together, and examined. From characterization, three types of Lactobacilli (Lb A, LbB, and LbC), two types of Leuconostoc (Leu A and LeuB), two types of Bifidobacterium (Bif A and Bif B), one Streptococcus and three types of Lactococci (Lc A, LcB, and LcC) were identified. Also, the probiotic strain of Lactobacillus casei sub sp. Shirota was isolated from the yakult sample. All were then subjected to further examination.In terms of acid resistance, all were found to be resistant to low pH 2 and 4 for 2 h. Similarly, all were resistant to bile salt (0.3% and 0.4% w/v) and able to hydrolyze it. With regards to antibiotic resistance, all were sensitive to penicillin G, ampicillin, and amoxicillin but only Lactobacilli and Bifidobacterium showed resistance to ciprofloxacin. Also, the isolates adhered to hexane. This study implies that theki dahi comprises various LAB with probiotic properties. Majorly, Lb A and Bif A demonstrated similar probiotic properties to control organism. Thus, they can be considered as potential probiotic candidates in theki dahi. Keywords: Theki dahi, probiotic potentiality, LAB, isolation, identification, characterization DOI : 10.7176/JNSR/14-4-04 Publication date: February 28th 2023 Issue No:Vol. 14
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