Browsing by Author "YEAYNISHET ALEMU"

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    RESPONSE OF BREAD WHEAT VARIETIES TO APPLICATION OF BLENDED NPS FERTILIZER RATES AT AGARFA DISTRICT, OROMIA REGIONAL STATE, ETHIOPIA
    (Hawassa University College of Agriculture, 2023) YEAYNISHET ALEMU
    Field experiment was conducted during 2012/13 E.C cropping season to study the response of Bread wheat vfertilizerarieties to blended NPS at Agarfa district, Oromia Regional State, Ethiopia. The treatments consisted of four rates (50,100,150,200 kg NPS ha-1 ) and recommended rate of Urea and DAP (50 + 100 kg ha-1 and three bread wheat varieties (Sinja, Huluka and Gelan) laid out in randomized complete block design arranged factorialy and replicated three times. All plots were supplemented with different rate of Urea to make the N rate uniform. The main effect of blended NPS fertilizer significantly influenced most agronomic parameters except days to heading and maturity, and harvest index. The maximum number of total tillers (213.89), biomass yields (10.46 t ha -1 ), 1000 seed weight(45.5g), grain yields (4.96 t ha-1 ) , straw yield (5.49 t ha-1 ) and plant height (77.4 cm) were obtained at the highest rate of 200 kg ha-1NPS) but maximum number of productive tillers(188.3) was recorded from 150 kg ha -1 NPS. Varieties showed significant difference for all agronomic parameters except harvest index. The highest plant height (76.86 cm), the longest days to heading (63.47 days) and days to physiological maturity (105.3 days), highest grain yield (5.09 t ha-1 ) and straw yield (5.48 t ha-1 ), largest biomass yield (10.58 t ha-1 ), maximum 1000 seed weight (47.83 g) were recorded from variety Gelan. Interaction of fertilizer rates and varieties was significant on number of kernels per spike. Regarding the economic feasibility of the fertilizer and varieties, maximum net return, 84184 birr/ha and 96890 Birr ha-1 , were recorded from 200 kg ha -1 NPS and Gelan variety respectively. The result of grain yield response index (GYRI) illustrated that variety Gelan belonged to ER group and both Huluka and Sinja varieties were under the NENR group. Thus, variety Gelan and the NPS rate of 200 kg ha-1 can be recommended for producing wheat in the study area.