Calibration of phosphorus fertilizer for barley (<i>Hordeum vulgare</i> L.) on cambisols of Endamekhoni, Northern Ethiopia

Reda, Gidena Tasew; Dargie, Sofonyas; Hailu, Birhane; Welde, Kidane; Eyasu, Gebru

doi:10.1080/23311932.2019.1670564

Cited by 2 publications

(1 citation statement)

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“…Increasing P beyond this level, the cost of additional P fertilizer to produce extra yield would likely be greater than the value of the additional yield. This study in line with Reda et al (2019) the Pf computed from the difference between available P values in soil samples collected from plots, which were received 0, 23, 46, 69 and 92 kg P 2 O 5 ha −1 the average value of P-requirement factor was 16.27 mg kg −1 . Similarly the studies reported critical concentrations of 19 and 13 and 13.5 mg P kg -1 using Bray 2 test for food barley, malting barley and wheat on Nitisols, respectively (Admassu, 2017;Agegnehu and Lakew, 2013;Agegnehu et al, 2015).…”

Section: P Requirement Factor (Pf)supporting

confidence: 86%

Soil test crop response based phosphorus calibration study for bread wheat in Kofele District, West Arsi Zone Oromia, Ethiopia

Husien¹,

Firomsa²,

Abera³

2021

J Sci Agri

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Nowadays, a balanced fertilizer recommendation is of paramount importance in order to confirm the security and sustainably increase crop productivity for farmers and other stakeholders. Soil test crop response based phosphorus calibration study in two years (2017 and 2018) was done for bread wheat in kofele district with objectives to assess and evaluate yield response of bread wheat to phosphorus-fertilizer applications in soils that have initial high/medium/low levels of phosphorus on Eutric Vertisols. A composite soil samples collection were made in zigzag method from farmer’s land and analyzed for available P in order to identify the level of the required parameters in the soil to select farmland for actual experiment. Accordingly, phosphorus calibration study treatments include application of 0, 10,20,30,40 and 50 kg P ha-1 with recommended nitrogen 69 kg N ha-1 with RCBD design was used with two replications. The plot size of 5mx4m with a seed rate of 150 kg ha-1 and Ogolcho variety which had been recommended for the area was used. So that the result showed that phosphorus fertilizer application significantly affects yield and yield components of bread wheat. Similarly, phosphorous fertilizer application at different rates increased grain yield of bread wheat by 28 to 44% compared to the control. Furthermore, the study was revealed that phosphorus critical (Pc) point for bread wheat was 19, and phosphorus requirement factor was also 3.30. Therefore, future research should focus on verification of the result on farmland before disseminating the technology to the end-user.

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Section: P Requirement Factor (Pf)supporting

confidence: 86%