ARPN Journal of Agricultural and Biological Science       ISSN 1990-6145
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ARPN Journal of Agricultural and Biological Science                            June 2020 | Vol. 15  No. 1

Effect of beer bio sludge and NPS blended chemical fertilizers on yield and yield components of malt barley

Author (s):

Aberra-Abebe M. and Diriba-Shiferaw G.


Ethiopia rank 21st in the world’s with share of 1.2% and 2nd next to morocco with share of 26% in Africa in total barley production; however, it’s productivity has been still low (2.18 tons) compared to 3.3 tons ha-1 in Kenya and 6 tons ha-1 in developed countries. This low productivity and quality has been resulted from soil fertility depletion and low rate use of organic and chemical fertilizers below the rate required and unbalanced application of nutrients. This experiment was conducted to test the effect of integrated use of organic Beer biosludge (0, 5, 10 and 15 t ha-1) and inorganic blended NPS fertilizer (0, 75, 100 and 150 kg ha-1NPS) on growth, yield and yield component of malt barley at Lemu-Bilbilo District in Arsi Zone in 2019 cropping season. The experiment was arranged in randomized complete block design having sixteen treatments in three replications. The analysis of variance showed that the main effect of blended NPS fertilizer significantly influenced seed per spike, plant height, moisture content of the grain, grain yield, biomass yield, harvest index and protein content. The main effect of Beer biosludge resulted significant differences on productive tillers, number of seed per head, spike length, biomass, plant height, grain yield, thousand kernel weight, harvest index, moisture content, 50% days to heading and protein content. The interaction effect of NPS fertilizer and Beer biosludge also brought significant differences on plant height, productive tillers, hectolitre weight, grain yield, thousand kernel weight, harvest index, seed per spike and moisture content of the grain. The highest (19.49 t ha-1) and lowest (12.26 t ha-1) mean biomass yield per hectare were obtained from plots fertilized with 15 t BBS along with 75 kg NPS ha-1 and 5 t BBS ha-1 alone, respectively; and similarly, highest grain yield (9.26 t ha-1) was recorded from 15 t BBS application along with 150 kg NPS ha-1 and lowest (3.94 t ha-1) from the control plot. Highest marginal rate of return (3981%) was obtained from plot treated with 100 kg NPS ha-1 along with 5 t BBS ha-1 and highest protein content from plot treated with 100 and 150 kg NPS ha-1. Also growth, yields and quality parameters significantly and positively correlated to each other due to organic and inorganic fertilizers applied. Thus, application of 5 tons ha-1 of BBS along with 150 kg ha-1 is better to improve productivity of malt barley and can be used as an alternative soil management option for malt barley production at an experimental area and the like. However, to come to concrete recommendation, similar research should be done with the inclusion of more biosludge rates in combination with different blended inorganic fertilizers and different varieties of malt barley at different locations and seasons.

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