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 ON YIELD AND YIELD COMPONENTS OF MUNG BEAN VARIETIES IN CHEHA DISTRICT, GURAGE ZONE, CENTRAL ETHIOPIA
    (wolkite university, 2024-04-01) TIGIST FENTAHUN MEHARIE
    Mung bean (Vigna radiata L.), is a recently introduced grain legume crop with high potential uses and export demand. However poor crop management practices, including improper NPSB fertilization rate and absence of improved varieties contributed to low productivity in the study area. Hence a field experiment was conducted in Cheha district, Gurage Zone to evaluate the effect of blended NPSB fertilizer rates on the yield and yield components of mung bean varieties. The experiment was laid out in a randomized complete block design with three replications. There were 16 treatment combinations, comprising two mung bean varieties (NVL-1 and Rasa) and eight blended NPSB fertilizer rates (0, 25, 50, 75,100, 125, 150 and 175 kg ha-1 ). The results showed that the highest values for most growth parameters and yield components were obtained with the application of 175 kg ha-1 NPSB. Results from the main effect of NPSB fertilizer rates indicated that the highest values for plant height (75.83), total number of branches (8.43), total number of nodules (22.91 and 22.6), number of effective nodules (13.41and 13.01) hundred seed weight (35.5g) and above ground dry biomass (5606.3 kg ha-1 ) were obtained. The interaction between variety and NPSB rate significantly influenced several growth and yield traits. The combination of Rasa variety with 175 kg ha-1 NPSB resulted in the highest days to 50% flowering (55.66 days),days to 90% physiological maturity (88.33 days), number of pod per plant (31), number of seed per pod (13.91), grain yield (1403.33 kg ha-1 ) and harvest index (24.97%).The partial budget analysis indicated that the combination of rasa variety with 175 kg ha1 NPSB gave the highest net benefit (48,928 Birr ha-1 ) with 1113.2% marginal rate of return. Therefore, the use of 175 kg ha-1 NPSB fertilizer with Rasa variety are recommended for optimal mung bean yield and economic benefit in the study area and similar agro ecology. These findings provide valuable insights for farmers and researchers to enhance mung bean production and address yield limitations in Ethiopia. However, since the result is only on one season and one location, further research is recommended to be carried out across more seasons and locations
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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.