College of Agriculture & Natural Resources

URI for this communityhttps://rps.wku.edu.et/handle/123456789/45803

College of Agriculture & Natural Resource

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    EFFECT OF BLENDED NPSB FERTILIZER RATES AND INTRA-ROWSPACINGONGROWTH AND YIELD OF ONION (Allium cepa L.) UNDER IRRIGATIONCONDITION IN GURAGE ZONE, ETHIOPIA
    (wolkite university, 2022-07-04) YEKITE TEREFE ZEWDIE
    The onion is one of Ethiopia's most important vegetable crops, and it is usedvirtuallyevery day as a spice and vegetable in Ethiopian cuisine. However, its productivityisstilllow due to various limiting factors such as low soil fertility, improper plant densityorspacing, disease and pests and lack of production technologies appropriate todif erentvarieties and agro-ecological conditions. Haphard fertilizer application andintrarowplant spacing are among others the most important once. To this ef ect, the present studywas initiated to evaluate the ef ects of NPSB fertilizers and intra-rowspacingonthegrowth and yield performance of onion variety of Bombay red under Enemor districtconditions during the “irrigation” season. There were 12 treatment combinationswhichconsisted of four levels of NPSB fertilizers (0, 122, 244 and 366kg ha -1) and threelevelsofintra-row plant spacing (7.5cm, 10cm and 12.5cm). The experiment was laidout inRandomized Complete Block Design (RCBD) with factorial arrangement and underthreereplications. Results of the statistical analysis showed that the treatments hadhighlysignificant (p ≤ 0.01) dif erence on the their interaction ef ect on both the growthandyield parameters tested (i.e. plant height, leaf number, bulb diameter, bulb length, weightof onion bulbs as well as marketable, unmarketable and total bulb yield). Generally, thetreatment combination of 244kg ha -1 and 7.5cm intra-row spacing recordedthelargestmarketable bulb yield of 41.2t ha -1 , total bulb yield of (41.34t ha -1), harvestingindexof77.17%, and the lowest unmarketable bulb yield of 0.14t ha -1 . Results of the correlationanalysis also showed that almost all the tested parameters of onion werehighlysignificantly and positively correlated with the marketable bulb yield of onion. Besides, asrevealed by the partial budget analysis, the combined treatment of 244kg ha -1 NPSBand7.5cm intra row spacing resulted in the highest net benefit increase of Birr 893,390whencompared with the other treatments combinations. Hence, the combined applicationof244kg ha -1 of NPSB fertilizers and intra-row spacing 7.5cm is recommendedforonionproduction in Enemor District as well as areas with similar agro-ecological conditions.However, since the study was conducted only for a single season and in only onelocation,further research is recommended to be carried out in more other locations as well asatdif erent seasons.
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    EFFECT OF BLENDED NPSB FERTILIZER RATES AND INTRA-ROWSPACINGONGROWTH AND YIELD OF ONION (Allium cepa L.) UNDER IRRIGATIONCONDITION IN GURAGE ZONE, ETHIOPIA
    (wolkite university, 2022-07-03) YEKITE TEREFE ZEWDIE
    The onion is one of Ethiopia's most important vegetable crops, and it is usedvirtuallyevery day as a spice and vegetable in Ethiopian cuisine. However, its productivityisstilllow due to various limiting factors such as low soil fertility, improper plant densityorspacing, disease and pests and lack of production technologies appropriate todif erentvarieties and agro-ecological conditions. Haphard fertilizer application andintrarowplant spacing are among others the most important once. To this ef ect, the present studywas initiated to evaluate the ef ects of NPSB fertilizers and intra-rowspacingonthegrowth and yield performance of onion variety of Bombay red under Enemor districtconditions during the “irrigation” season. There were 12 treatment combinationswhichconsisted of four levels of NPSB fertilizers (0, 122, 244 and 366kg ha -1) and threelevelsofintra-row plant spacing (7.5cm, 10cm and 12.5cm). The experiment was laidout inRandomized Complete Block Design (RCBD) with factorial arrangement and underthreereplications. Results of the statistical analysis showed that the treatments hadhighlysignificant (p ≤ 0.01) dif erence on the their interaction ef ect on both the growthandyield parameters tested (i.e. plant height, leaf number, bulb diameter, bulb length, weightof onion bulbs as well as marketable, unmarketable and total bulb yield). Generally, thetreatment combination of 244kg ha -1 and 7.5cm intra-row spacing recordedthelargestmarketable bulb yield of 41.2t ha -1 , total bulb yield of (41.34t ha -1), harvestingindexof77.17%, and the lowest unmarketable bulb yield of 0.14t ha -1 . Results of the correlationanalysis also showed that almost all the tested parameters of onion werehighlysignificantly and positively correlated with the marketable bulb yield of onion. Besides, asrevealed by the partial budget analysis, the combined treatment of 244kg ha -1 NPSBand7.5cm intra row spacing resulted in the highest net benefit increase of Birr 893,390whencompared with the other treatments combinations. Hence, the combined applicationof244kg ha -1 of NPSB fertilizers and intra-row spacing 7.5cm is recommendedforonionproduction in Enemor District as well as areas with similar agro-ecological conditions.However, since the study was conducted only for a single season and in only onelocation,further research is recommended to be carried out in more other locations as well asatdif erent seasons.
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    RESPONSE OF POTATO (Solanum tuberosum L.) VARIETIES TO BLENDED NPSB FERTILIZER ON GROWTH, YIELD AND QUALITY PARAMETERS AT GUMMER DISTRICT, SOUTHERN ETHIOPIA
    (wolkite university, 2022-06-01) DAMTEW GIRMA LEGESE
    Potato is an important food security and cash crop in Southern Ethiopia including Gurage Zone. However, productivity of the crop in the zone is far below its potential due to an array of factors. For instance, inappropriate selection of varieties and lacking information regarding the actual rate of the newly recommended blended NPSB fertilizer in the potato producing areas including Gummer district. Cognizant of this, the present experiment was initiated and conducted in Gummer district under supplementary irrigation, during the 2021 Belg season, with the objective of assessing the response of different potato varieties to blended NPSB fertilizer rates. The experiment was laid out in Randomized Complete Block Design (RCBD) with factorial arrangement and having three replications. There were 12 treatment combinations, which comprised of three potato varieties (namely; Belete, Gudanie and a local check, Askot) and four rates of blended NPSB fertilizer rates (0, 119,238 and 357 kg NPSB ha-1 ). The analysis of variance showed that the two main factors (blended NPSB fertilizer rates and potato varieties) had a statistically significant effect on all tested parameters except the effect of the blended NPSB fertilizer rates on days to 50% emergence. The interaction of the two factors had also showed a statistically significant effect on days to 90% maturity, plant height, main stem number per plant, total tuber number/hill, tuber yield per hill, large sized tuber yield, marketable and total tuber yields (t ha-1 ) and tuber dry matter content. Days to 90%maturity were delayed with increased rates of blended NPSB fertilizer for all tested varieties. The highest mean plant height (69.54cm) and number of main stems per hill (8.38) were obtained at 357 kg ha-1 NPSB with Belete variety. The highest marketable tuber yield (34.40 t ha-1 ), total tuber yield (35.84 t ha-1 ) and tuber dry matter content of (26.75%) were obtained from Belete variety with the application of 238 kg ha-1 NPSB fertilizer. The results of the economic analysis indicated that the maximum net benefit (180660.7 Birr ha-1 ) with 3405.23% marginal rate of return was obtained from Belete variety with the application of 238 kg NPSB ha-1 . Hence, the application of 238 kg ha-1 with Belete variety can be recommended for optimum potato production with the acceptable economic benefit in the study area and similar agro-ecology. However, since the result is only of one season and location, further research is recommended to be carried out across more seasons and locations.
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    SCHOOL OF GRADUATE STUDIES EFFECTS OF BLENDED FERTILIZER TYPES ON GROWTH, YIELD AND QUALITY OF TOMATO (Lycopersicon esculetum Mill.) VARIETIES AT CHEHA DISTRICT, GURAGHE ZONE, CENTRAL ETHIOPIA
    (wolkite university, 2025-04-02) HAYATU ABDELLA BEDRU
    Tomato (Lycopersicon esculetum Mill.), which is farmers used for income generation and home conception. In Ethiopia is facing challenges in low productivity for the major reasons including inaccessibility of improved varieties and specific fertilizer recommendations. Therefore, this experiment had initiated to evaluate the roles of blended fertilizers on yield and yield components of tomato varieties in Cheha district of Central Ethiopia during this cropping season. Sixteen treatments (four blended fertilizer types with four tomato varieties) were assigned and triplicated in RCBD design. Data on phonology; vegetative and yield related attributes were recorded and analyzed using SAS software. From the experiment, 50% flowering and plant height were significant (P<0.001) response for melkashola varieties and NPSBZn blended fertilizer. Numbers of clusters per plant and fruits per cluster, fruit diameter, total fruit yield as well as individual fruit size were highly significant(P<0.001) for Gelilema variety and NPS fertilizer. Marketable yield was highly significant for Gelilema variety with NPSB blended fertilizer. 50% fruiting, dry weight, days to maturity and total soluble solid were highly significant (P<0.001) Melkashola and NPS fertilizers. However, unmarketable fruit yield and pH significantly affected by the varieties. The highest (76.6 ton/ha) total fruit yield was obtained when NPSB fertilizers applied to Gelilema variety. Observing the partial budget analysis, the application of NPSB fertilizers with Gelilema variety gave the maximum net return of 1278200ETB with an acceptable marginal rate of return (5219.6 %). Therefore, the combination of NPSB fertilizer with Gelilema variety is economically feasible for growing tomatoes in Cheha areas. However, this study cannot provide a solid recommendation because the research only one season of work was done in one place. .
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    SCHOOL OF GRADUATE STUDIES EFFECTS OF BLENDED FERTILIZER TYPES ON GROWTH, YIELD AND QUALITY OF TOMATO (Lycopersicon esculetum Mill.) VARIETIES AT CHEHA DISTRICT, GURAGHE ZONE, CENTRAL ETHIOPIA
    (wolkite university, 2025-12-04) HAYATU ABDELLA BEDRU
    Tomato (Lycopersicon esculetum Mill.), which is farmers used for income generation and home conception. In Ethiopia is facing challenges in low productivity for the major reasons including inaccessibility of improved varieties and specific fertilizer recommendations. Therefore, this experiment had initiated to evaluate the roles of blended fertilizers on yield and yield components of tomato varieties in Cheha district of Central Ethiopia during this cropping season. Sixteen treatments (four blended fertilizer types with four tomato varieties) were assigned and triplicated in RCBD design. Data on phonology; vegetative and yield related attributes were recorded and analyzed using SAS software. From the experiment, 50% flowering and plant height were significant (P<0.001) response for melkashola varieties and NPSBZn blended fertilizer. Numbers of clusters per plant and fruits per cluster, fruit diameter, total fruit yield as well as individual fruit size were highly significant(P<0.001) for Gelilema variety and NPS fertilizer. Marketable yield was highly significant for Gelilema variety with NPSB blended fertilizer. 50% fruiting, dry weight, days to maturity and total soluble solid were highly significant (P<0.001) Melkashola and NPS fertilizers. However, unmarketable fruit yield and pH significantly affected by the varieties. The highest (76.6 ton/ha) total fruit yield was obtained when NPSB fertilizers applied to Gelilema variety. Observing the partial budget analysis, the application of NPSB fertilizers with Gelilema variety gave the maximum net return of 1278200ETB with an acceptable marginal rate of return (5219.6 %). Therefore, the combination of NPSB fertilizer with Gelilema variety is economically feasible for growing tomatoes in Cheha areas. However, this study cannot provide a solid recommendation because the research only one season of work was done in one place
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    YIELD RESPONSE OF BREAD WHEAT (Triticum aestivum L.)VARITIES TO BLENDED (NPSBZn) FERTILIZER AT WOLISO DISTRICT OBI KOJI KEBELA, CENTRAL ETHIOPIA
    (wolkite university, 2023-05-02) YILMA DABA NANESSAA
    Ethiopia is one of the important wheat producing countries. However yield is low mainly due to low soil fertility especially lack of improved verities and climate variability Therefore, a field experiment was conducted at Woliso District during the 2021 main cropping season to investigate the effect of NPSBZn fertilizer levels on wheat growth phenology and yield. The factorial combination of three bread wheat varieties (Kekeba, Kingbird and Boiyido) and four rates of NPSBZn fertilizer (0, 50,100 and 150) were laid out in randomized complete block design with three replication. The collected data were subjected to analysis of variance using SAS version 9.2 and the mean separation was computed using the least significant difference at (p<0.05). The result showed that the spike length, plant height, thousand kernels weight, above ground biomass and the straw yield were highly significantly (p<0.01) affected by the main effects of fertilizer NPSBZn and Varieties. The maximum spike length(8.80) and total dry biomass yield(9751.55kg ha-1 ), were obtained at the NPSBZn rate of 150kg ha-1 .The interaction effect of fertilizer and varieties were highly significant on grain and above ground dry biomass yield. The maximum grain yield (5145.4 kg ha-1 ) and above ground dry biomass (9718.2kg ha1 ), were obtained due to Combination of the highest rates of NPSBZn 150kg ha-1 with variety kekeba. In general the economic feasibility of the fertilizer over varieties combination indicated that application of 150 kg ha-1 of NPSBZn to king bird variety resulted in maximum marginal rates of return 3753.92%The partial budget analyses revealed that the highest net return (135675.9 Birr ha-1 ) with MRR (1872.36%) was obtained from kekeba with the fertilizer application of 150 kg NPSBZn ha-1 . Based on this result, tentatively concluded that bread wheat Varity kekeba and NPSBZn rate of 150kg ha-1 to be applicable for bread wheat production in the study area.