Abstract
Sorghum is cultivated on Vertisols in the Ethiopian Highlands. An experiment was conducted in the Gumara-Maksegnit watershed in 2013 and 2014 to assess the effect of rate and timing of nitrogen fertilizer application on the possibility to shorten the maturity period and to improve the productivity of sorghum. The experiment was laid out as Randomized Complete Block Design with three replications. Treatments were nitrogen doses between 0 and 87 kg N ha−1 as urea applied at planting, at knee-height stage or in split doses at both stages. Results showed that application of 23, 41, 64 and 87 kg ha−1 N gave a yield increase of 40, 53, 62 and 69% over the control (0 kg N ha−1), respectively. In addition, split application of 41 kg ha−1, 64 kg ha−1 and 87 kg ha−1 of nitrogen fertilizer, half at planting and half at knee height stage, gave 19%, 15% and 18% increase in sorghum grain yield over a single dose application, respectively. Applying 87 kg ha−1 nitrogen fertilizer with split application half at planting and half at knee height stage, along with 46 kg ha−1 of P2O5, gave the highest grain yield and income.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 3
Claim · model-written summary
Nitrogen at 23, 41, 64 and 87 kg ha−1 increased sorghum yield by 40, 53, 62 and 69% over the unfertilized control.
- Treatment
- application of 23, 41, 64 and 87 kg ha−1 Ne1
- Outcome
- yielde1
- Direction
- increasee1
- Value
- 40, 53, 62 and 69%e1
- Comparator
- control (0 kg N ha−1)e1
- Setting
- Ethiopian Highlandse0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum is cultivated on Vertisols in the Ethiopian Highlands”
e1“application of 23, 41, 64 and 87 kg ha−1 N gave a yield increase of 40, 53, 62 and 69% over the control (0 kg N ha−1)”
Claim · model-written summary
Split nitrogen application at 41, 64 and 87 kg ha−1 increased sorghum grain yield by 19%, 15% and 18% over a single dose.
- Treatment
- split application of 41 kg ha−1, 64 kg ha−1 and 87 kg ha−1 of nitrogen fertilizer, half at planting and half at knee height stagee2
- Outcome
- sorghum grain yielde2
- Direction
- increasee2
- Value
- 19%, 15% and 18%e2
- Comparator
- single dose applicatione2
- Setting
- Ethiopian Highlandse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum is cultivated on Vertisols in the Ethiopian Highlands”
e2“split application of 41 kg ha−1, 64 kg ha−1 and 87 kg ha−1 of nitrogen fertilizer, half at planting and half at knee height stage, gave 19%, 15% and 18% increase in sorghum grain yield over a single dose application”
Claim · model-written summary
Applying 87 kg ha−1 nitrogen with split application and 46 kg ha−1 P2O5 gave the highest grain yield and income.
- Treatment
- Applying 87 kg ha−1 nitrogen fertilizer with split application half at planting and half at knee height stage, along with 46 kg ha−1 of P2O5e3
- Outcome
- grain yield and incomee3
- Direction
- higheste3
- Setting
- Ethiopian Highlandse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sorghum is cultivated on Vertisols in the Ethiopian Highlands”
e3“Applying 87 kg ha−1 nitrogen fertilizer with split application half at planting and half at knee height stage, along with 46 kg ha−1 of P2O5, gave the highest grain yield and income”
The same questions in other papers
phosphorus · yield · SorghumResults differ
91 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
101 papers more in this group
See all 105 papers →nitrogen · yield · SorghumPositive and negative results
263 papers in the same direction as this paper · 22 in the opposite direction · 4 reporting no difference from an alternative
- positive
- positive
- positive
286 papers more in this group
See all 290 papers →fertilization · yield · SorghumPositive and negative results
417 papers in the same direction as this paper · 21 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- no effect
442 papers more in this group
See all 446 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.