Abstract
Barley (Hordeum vulgare L.) is the most health benefits among cereal crops which were grown mostly in central highlands of Ethiopia. The three food barley varieties (EH1493, HB1966 and HB-1307) which were released by Holeta Agricultural Research Center (HARC) had experience on barley breeding program (his center of excellence) was evaluated for their grain flour quality content and proximate analysis with respective to five blended NPSB fertilizer rates (0, 100,150, 200 & 250 kg NPSB ha -1 ) and one Recommended NP (60 kg N and 69 kg P 2 O 5 ha -1 ) fertilizer rates. To evaluate their proximate analysis and grain flour quality contents of the food barley varieties were determined by using suitable Standard Official procedures. Proximate analysis was determined according to Association of Official Agricultural Chemists (AOAC) method and TKW, MC, HLW, GS, GE, PC, FC, AC, CHO, SC, FC, and BG contents of food barley flour was analyzed. All quality and proximate analysis result means were statistically significant and in the range of acceptable recommendation according to FAO and other nutritional sources. The quality parameters analysis showed that EH1493 variety has an average moisture content (11.78%), Hectoliter weight (66.26%), and friability (68.43%), while grain size (80.46%) and Bet-glucan (861.81mgL -1 ) were higher with HB1966 variety. Moreover, 200kg NPSB ha -1 gave the maximum protein (10.31%), fat (2.51%), and ash (2.64%), while the highest total carbohydrate (82.88%) content obtained on 250kg NPSB ha -1 .The economic analysis revealed that the highest net benefit (69558.42 birr ha -1 ) with marginal rate of return of 1475.41% was recorded from the application of 200kg NPSB ha -1 with EH1493 variety. Therefore, application of 200 kg NPSB ha -1 with EH1493 variety is recommended to be used by farmers around Walmera district. Keywords: Food barley, NPSB fertilizers, proximate analysis, grain quality content DOI: 10.7176/FSQM/104-01 Publication date: January 31 st 2021
Highlights
Barley (Hordeum vulgare L.) is most important cereals in the world in terms of both quantities produced and cultivated areas, annually, harvested area was about 140 million tons, obtained from 50 million hectares (FAOSTAT, 2018)
MATERIALS AND METHODS The experiment was conducted on Holeta Agricultural Research Center (HARC) main station in 2019/2020 cropping season in West Shewa walmera district in the central highlands of Ethiopia
The study results showed that an acceptable hectoliter weight in EH1493 variety, but hectoliter weight of the HB1966 and HB-1307 varieties were under acceptable ranges
Summary
Barley (Hordeum vulgare L.) is most important cereals in the world in terms of both quantities produced and cultivated areas, annually, harvested area was about 140 million tons, obtained from 50 million hectares (FAOSTAT, 2018). According to Assefa et al, (2017) soils in the highlands of Ethiopia usually have low levels of essential plant nutrients, especially low availability of nitrogen; it is the main causes to variations in the nutritional value of cereal grains that result from biotic and abiotic factors Evaluation of these food barley varieties across different levels of blended NPSB fertilizer helps to determine appropriate breeding objectives for improving the nutritional value of grain cereals (Rodehutscord et al, 2016). Food barley varieties released in Holeta agriculture research center, so to determine which variety; EH1493, HB1966, or HB1307 was higher responsive to NPSB blended fertilizer rates in respective to their grain qualities in the study area
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