Abstract
A field experiment was conducted on acidic nitisols of Wolmera District in two locations at 2017 cropping season to determine the response of barley for the combined application of lime and different phosphorus fertilizers. Several barley growth performances, yield, and plant samples were collected with soil samples to determine soil acidity attributes and nutrient use efficiency. Barley grain yield and growth performances were significantly (P<0.05) affected by the application of different phosphorus sources. The highest grain yield was recorded from NPSB phosphorus fertilizer source in both experimental sites followed by partly acidulated rock phosphate (PARP) with yield improvement of 89 and 52%, over the control treatment respectively. Growth parameters like plant height, spike length, number of tillers, etc., and physical grain quality data (hectoliter weight and thousand seed weight) were significantly affected by all phosphorus sources. The combination of phosphorus fertilizer (NPSB at 69 kg P2O5 ha-1) with lime got a higher grain yield advantage over other treatments. The highest phosphorus concentration in the plant parts was recorded from the fertilizer source of NPSB. This was due to its immediate availability to the plant uptake compared to other sources. The use of partly acidulated rock phosphate or organic hyper-phosphate (MOHP) fertilizer, as an alternative for NPSB application provides a competitive yield advantage for acidic soils of Wolmera area or other similar soil type and agroecology of the country. Key words: Acid soil, food barley, lime, partly acidulated rock phosphate (PARP), organic hyper-phosphate (MOHP), NPSB, yield.
Highlights
Agriculture is a key driver of Ethiopia’s economy and it directly supports 85% of the population, contributes about 40% to the gross domestic product (GDP), and 80% to the export value
Both study sites soil physical properties were categorized under fine texture class, much influenced by their higher amount of clay particles, which in turn influences the physical and chemical properties of such soils
Field experiment was conducted to assess and evaluate the effects of different phosphorus sources and their application rate with and without lime on agronomic performance of food barley (H. vulgaer L.) at Holeta and Rob Gebeya, which are located in Wolmera district of “Finfine Zuria” special zone of Oromia region under rain fed condition during ‘Meher’ season in 2017
Summary
Agriculture is a key driver of Ethiopia’s economy and it directly supports 85% of the population, contributes about 40% to the gross domestic product (GDP), and 80% to the export value. Insufficient productivity of the land for an ever-increasing population has resulted in food insecurity.
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