Abstract
Many un-updated reports indicated that potassium was not deficient in Ethiopian soils. However, it was later proved that many Ethiopian soils are potassium deficient. Hence, the Ethiopian Soil Information System (EthioSIS) has initiated potassium fertilizer demonstrations in 2014 using K containing blended fertilizers in different parts of the country. But, there were no evidences about the K in the blended fertilizer is enough for wheat demand or not. Thus, a field experiment was conducted to evaluate the response of wheat to additional K rates on top of the K containing blended fertilizers. The experiments were laid out in Randomized Complete Block Design with 4 levels of potassium (0, 30, 60, 90, of K2O kg/ha) replicated 3 times. Data on yield and yield components of wheat crop were collected and analysis of variance was done. Results depicted that plant height and harvest index were not significant. However, spike length, grain yield and straw yields of wheat were significantly affected by K application rates. Hence, the highest spike length was obtained at a rate of 90 kg/ha K2O but the highest grain and straw yield of wheat were obtained at 30 kg/ha K2O . Besides, the highest apparent K recovery and agronomic use efficiency were found at 30 kg K2O /ha. Therefore, potassium fertilization is important and its level in the blended formula did not meet the wheat requirement in the study area.
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Claims 11
Claim · model-written summary
Potassium rates did not significantly affect wheat plant height.
- Taxon
- Wheat (Triticum aestivum)
Triticum aestivumt0 - Treatment
- potassiume1
- Outcome
- plant heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results depicted that plant height and harvest index were not significant.”
e1“4 levels of potassium”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Potassium rates did not significantly affect harvest index.
- Taxon
- Wheat (Triticum aestivum)Triticum aestivumt0
- Treatment
- potassiume1
- Outcome
- harvest indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results depicted that plant height and harvest index were not significant.”
e1“4 levels of potassium”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Potassium rates significantly affected spike length.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K application ratese0
- Outcome
- spike lengthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spike length, grain yield and straw yields of wheat were significantly affected by K application rates.”
Claim · model-written summary
Potassium rates significantly affected grain yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K application ratese0
- Outcome
- grain yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spike length, grain yield and straw yields of wheat were significantly affected by K application rates.”
Claim · model-written summary
Potassium rates significantly affected straw yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K application ratese0
- Outcome
- straw yieldse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spike length, grain yield and straw yields of wheat were significantly affected by K application rates.”
Claim · model-written summary
The highest spike length occurred at 90 kg/ha K2O.
- Taxon
- Wheat (Triticum aestivum)Triticum aestivumt0
- Treatment
- 90 kg/ha K2Oe0
- Outcome
- spike lengthe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest spike length was obtained at a rate of 90 kg/ha K2O”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
The highest grain yield occurred at 30 kg/ha K2O.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 30 kg/ha K2Oe0
- Outcome
- graine0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest grain and straw yield of wheat were obtained at 30 kg/ha K2O”
Claim · model-written summary
The highest straw yield occurred at 30 kg/ha K2O.
- Taxon
- wheatTriticum aestivume0
- Treatment
- 30 kg/ha K2Oe0
- Outcome
- straw yielde0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest grain and straw yield of wheat were obtained at 30 kg/ha K2O”
Claim · model-written summary
Apparent potassium recovery was highest at 30 kg K2O /ha.
- Taxon
- Wheat (Triticum aestivum)Triticum aestivumt0
- Treatment
- 30 kg K2O /hae0
- Outcome
- apparent K recoverye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest apparent K recovery and agronomic use efficiency were found at 30 kg K2O /ha.”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Agronomic use efficiency was highest at 30 kg K2O /ha.
- Taxon
- Wheat (Triticum aestivum)Triticum aestivumt0
- Treatment
- 30 kg K2O /hae0
- Outcome
- agronomic use efficiencye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest apparent K recovery and agronomic use efficiency were found at 30 kg K2O /ha.”
t0“Wheat (Triticum aestivum)”
Claim · model-written summary
Authors concluded potassium in the blended formula did not meet wheat requirements.
- Taxon
- wheatTriticum aestivume0
- Outcome
- potassium fertilizatione0
- Qualifier
- did not meet the wheat requirement in the study areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium fertilization is important and its level in the blended formula did not meet the wheat requirement in the study area.”
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See all 257 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.