College of Agriculture

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The College of Agriculture is committed to advancing agricultural education, research, and community service. It serves as a center for knowledge creation and dissemination in crop science, animal production, natural resource management, and sustainable agriculture.

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    INFULENCE OF AVOCADO WASTE AND COFFEE HUSK VERMICOMPOST AND VERMIWASH ON SEEDLING GROWTH PERFORMANCE OF COFFEE (Coffe arabica L.)
    (Hawassa University College of Agriculture, 2024) RAHEL MENGISTU
    Coffee is an important cash crop grown all over the world including Ethiopia. But in Ethiopia its production is low due to poor seedling quality and agronomic management. The experiment was conducted to evaluate the effect of avocado waste and coffee husk vermicompost and vermiwash on seedling growth performance of coffee (Coffea arabica L.) at nursery condition, Hawassa, Ethiopia. A factorial combination of two level of vermiwash (with and without) and three types of vermicompost (coffee husk, avocado waste, 50% Coffee husk+50% avocado waste) and recommended rate of coffee growing media( 3:1 top soil with compost) as positive control and soil alone as (negative control), these were laid out in CRD with three replications. Vermiwash was prepared by 50% of avocado waste plus 50% coffee husk. Whereas vermicompost were prepared by avocado waste, coffee husk and combined of avocado waste and coffee husk) and animal manure and grass were added uniformly for all wastes as starter and bedding material. 200g of VC produced from d/f wastes (avocado, coffee husk and combined of avocado and coffee husk were applied for all experimental units (polyethylene bags) except negative control and positive control. While 100ml of VW was applied for half of the experimental units. All agronomic practice were done as per required until the final growth stage of coffee seedlings. The initial soil, vermicompost and vermiwash sample were well prepared and analyzed for their chemical composition. All coffee seedling growth parameters data were collected properly and analyzed by SAS software and the treatment mean was compared using LSD at 5% probability level. The results showed that all growth parameters (plant height, leaf number, leaf area, number of node, root length, shoot fresh weight, root fresh weight, shoot dry weight and root dry weight) except internode length were significantly(<0.001) influenced by the interaction effect of vermicompost and vermiwash. The result indicated, the highest plant height(21.3cm), leaf number(12), leaf area(75cm 2 ), number node(6), root length (21.3cm ),shoot fresh weight(9.09g), root fresh weight (5.1g), shoot dry weight(2.86g) and root dry weight (0.67g) per plant were obtained from the interaction of coffee husk vermicompost with vermiwash. While the lowest plant height(9.8cm), leaf number(4.2), leaf area (23.94cm 2 ), number of node(2.17), root length(9.67cm), shoot fresh weight(2.55g), root fresh weight (2.57g), shoot dry weight(0.39g) and root dry weight (0.25g) per plant were obtained from soil without vermiwash (negative control). Therefore the interaction application of coffee husk vermicompost along with vermiwash is the best treatment to improving coffee seedling growth performance.
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    PERFORMANCE EVALUATION OF MUNG BEAN (Vigna radiata(L.) Wilczek) VARIETIES UNDER VARIABLE PHOSPHOROUS FERTILIZER RATES AT ALAGE, CENTRAL RIFT VALLEY OF ETHIOPIA
    (Hawassa University College of Agriculture, 2020) HABTAM TILAHUN ASRATIE
    Mung bean is an important pulse crop in Ethiopia. However, lack of adapted high yielding varieties and poor soil fertility, especially low levels of nitrogen and phosphorus, have been demonstrated to be important constraints for the production of the crop. Field experiment was conducted during the 2019 belg season to determine the Performance Evaluation of Mung Bean (Vigna Radiata(L.) Wilczek) Varieties Under Variable Phosphorous Fertilizer Rates at Alage Agricultural Technical and Vocational Education Training college Experimental field. The treatments consisted of factorial combinations of four mung bean varieties ( Boreda-1, N26, NVL-1 and shoa robit local) and four phosphorus fertilizer rates (0, 23, 46 and 69 kg P2O5 ha-1 ) laid out in Randomized Complete Block Design with four replications. Data were collected on plant height , number of nodules plant-1 , nodules dry weight plant-1 , root dry weight plant-1 , shoot dry weight plant-1 , number of branches plant-1 ,number of pods plant-1 , number of seeds pod-1 , hundred seeds weight, grain yield, harvest index, biological yield, days to flowering and maturity. The variety Boreda-1 showed the best performance in number of pods plant-1 , number of seeds pod-1 ,and grain yield whereas NVL1 gave the lowest performance.Variety Boreda-1 also gave the highest gross benefit of 47624.22 ETB and the highest net benefit of 46749.22 ETB. But the lowest gross return and net return were obtained from variety NVL-1 ,with 40044.38 ETB and 39169.38 ETB, respectively. The increasing rates of phosphorous fertilizer showed substantial improvement in nodules dry weight plant-1 , shoot dry weight plant-1 , plant height, grain yield, and biological yield up to fertilizer rates of 46 kg P2O5 ha-1 . Application of 46 kg P2O5 ha-1 recorded the highest gross income of 47053.13 ETB and net return of 45003.13 ETB and the lowest values were recorded from the control; which were 40280.63 ETB and 40280.63 ETB in that order. From the study,the interaction of variety Boreda-1 with phosphorous fertilizer rates of 46 Kg P2O5 ha-1 recorded highest gross income of 50321.25 ETB and net return of 47396.25 ETB .While, the lowest was recorded from the interaction of variety NVL-1 with phosphorous fertilizer rates of 0 Kg P2O5 ha-1 with a gross income of 36303.75ETB and net return of 35428.75 ETB. Accordingly,variety Boreda-1 and application of 46 kg P2O5 ha-1 ,can be used to improve productivity of mung bean in the study area.