Abstract
Potassium fertilization was started in 2014 using K containing blended fertilizers in Ethiopia. However, there was no evidence whether the recommended rates of K in the blended formula (which is between 7 and 12 kg/ha in the form of K2O) meets the crop demand on different soil reference groups or not. So, a field experiments were conducted to determine the optimum rate of potassium for yield and nutrient uptake of wheat in Vertisols of northern Ethiopia. The experiments were laid out in Randomized Complete Block Design with 4 levels of potassium (0, 30, 60, 90, of kg/ha K2O) in three replications. Results depicted that the highest biological yield (straw + grain) and grain yields of wheat were increased with K rates. But, the partial budget analysis revealed that 60 K2O kg/ha is economically feasible rate for wheat in Vertisols of the area. On the other hand, the highest apparent K recovery and agronomic use efficiencies were found at 30 kg/ha K2O. Then it is concluded that the level of K in the blended formula was not enough to meet the yield requirement of wheat. Therefore, K should be applied independently rather than in blended for Vertisols of the area studied.
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Claims 7
Claim · model-written summary
Wheat biological yield increased with K rates.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- K ratese0
- Outcome
- biological yield (straw + grain)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest biological yield (straw + grain) and grain yields of wheat were increased with K rates.”
Claim · model-written summary
Wheat grain yield increased with K rates.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K ratese0
- Outcome
- grain yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest biological yield (straw + grain) and grain yields of wheat were increased with K rates.”
Claim · model-written summary
Partial budget analysis found 60 K2O kg/ha economically feasible for wheat.
- Taxon
- wheatTriticum aestivume0
- Outcome
- economically feasible ratee0
- Value
- 60 K2O kg/hae0
- Setting
- Vertisols of the areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the partial budget analysis revealed that 60 K2O kg/ha is economically feasible rate for wheat in Vertisols of the area.”
Claim · model-written summary
Apparent K recovery was highest at 30 kg/ha K2O.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 30 kg/ha K2Oe0
- Outcome
- apparent K recoverye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest apparent K recovery and agronomic use efficiencies were found at 30 kg/ha K2O.”
t0“wheat”
Claim · model-written summary
Agronomic use efficiency was highest at 30 kg/ha K2O.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 30 kg/ha K2Oe0
- Outcome
- agronomic use efficienciese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest apparent K recovery and agronomic use efficiencies were found at 30 kg/ha K2O.”
t0“wheat”
Claim · model-written summary
The authors concluded K in the blended formula was insufficient for wheat yield requirements.
- Taxon
- wheatTriticum aestivume0
- Outcome
- yield requirement of wheate0
- Qualifier
- level of K in the blended formula was not enoughe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the level of K in the blended formula was not enough to meet the yield requirement of wheat.”
Claim · model-written summary
The authors recommend independent K application for Vertisols in the study area.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- K should be applied independently rather than in blendede0
- Setting
- Vertisols of the area studiede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“K should be applied independently rather than in blended for Vertisols of the area studied.”
t0“wheat”
The same questions in other papers
potassium · yield · Triticum aestivum (wheat)Positive and negative results
226 papers in the same direction as this paper · 29 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
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