Abstract
This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa. The treatments contained three rates of nitrogen (N) (46, 92, and 138 kg·ha−1) and three times of N application (1/2 dose at sowing and 1/2 dose at tillering (timing one); 1/3 dose at sowing and 2/3 dose at tillering (timing two); and 1/3 dose at sowing, 1/3 dose at early tillering, and 1/3 dose at tillering (timing three) including one control. Days to 50% maturity, plant height, head length, head weight, and grain yield were significantly affected by treatment effect, while days to emergency, days to heading, and thousand kernel weight showed nonsignificant effect. The maximum grain yield was 5.060, 5.169, 5.836, and 5.555 t·ha−1 from T2, T5, T8, and T10, respectively, and statistically similar yield was recorded at combination of different rates in two split applications (1/2 dose at sowing and 1/2 dose at tillering). By considering the economic status of the farmers, the applications of 46 kg·N·ha−1 in two split doses (1/2 dose at sowing and 1/2 dose at tillering stage) gave 87,122 Birr·ha−1 with a MRR of 475.61%, which gave best economic benefit. Therefore, it can be concluded that use of 46 kg·N·ha−1 in two split applications (1/2 dose at sowing and 1/2 dose at tillering stage) can be recommended for farmers for production of sorghum in the study area and other areas with similar agroecological conditions.
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Claims 7
Claim · model-written summary
Nitrogen rate and timing significantly affected head length, head weight and grain yield of sorghum.
- Treatment
- rates and time of nitrogen fertilizer applicatione0
- Outcome
- head length, head weight, and grain yielde1
- Setting
- lowland areas of North Shewae0
SorghumNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e1“Days to 50% maturity, plant height, head length, head weight, and grain yield were significantly affected by treatment effect”
Claim · model-written summary
Nitrogen rate and timing significantly affected days to 50% maturity and plant height of sorghum.
- Treatment
- rates and time of nitrogen fertilizer applicatione0
- Outcome
- Days to 50% maturity, plant heighte1
- Setting
- lowland areas of North Shewae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e1“Days to 50% maturity, plant height, head length, head weight, and grain yield were significantly affected by treatment effect”
Claim · model-written summary
Nitrogen rate and timing had no significant effect on days to emergency, days to heading and thousand kernel weight of sorghum.
- Treatment
- rates and time of nitrogen fertilizer applicatione0
- Outcome
- days to emergency, days to heading, and thousand kernel weighte2
- Direction
- no_changeinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e2“while days to emergency, days to heading, and thousand kernel weight showed nonsignificant effect”
Claim · model-written summary
The maximum sorghum grain yield was 5.060, 5.169, 5.836 and 5.555 t·ha−1 from treatments T2, T5, T8 and T10.
- Treatment
- T2, T5, T8, and T10e3
- Outcome
- grain yielde3
- Direction
- maximume3
- Value
- 5.060, 5.169, 5.836, and 5.555 t·ha−1e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e3“The maximum grain yield was 5.060, 5.169, 5.836, and 5.555 t·ha−1 from T2, T5, T8, and T10, respectively”
Claim · model-written summary
Applying 46 kg·N·ha−1 in two split doses gave an economic benefit of 87,122 Birr·ha−1 for sorghum.
- Treatment
- 46 kg·N·ha−1 in two split dosese4
- Outcome
- economic benefite4
- Direction
- higherinferrede4
- Value
- 87,122 Birr·ha−1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e4“the applications of 46 kg·N·ha−1 in two split doses (1/2 dose at sowing and 1/2 dose at tillering stage) gave 87,122 Birr·ha−1 with a MRR of 475.61%, which gave best economic benefit”
Claim · model-written summary
Applying 46 kg·N·ha−1 in two split doses gave a MRR of 475.61% for sorghum.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This research was conducted to assess the effect of rates and time of nitrogen fertilizer application on yield and yield components of sorghum in lowland areas of North Shewa”
e4“the applications of 46 kg·N·ha−1 in two split doses (1/2 dose at sowing and 1/2 dose at tillering stage) gave 87,122 Birr·ha−1 with a MRR of 475.61%, which gave best economic benefit”
Claim · model-written summary
Use of 46 kg N ha−1 in two split applications is recommended to farmers for sorghum production in the study area.
- Outcome
- use of 46 kg·N·ha−1 in two split applicationse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“it can be concluded that use of 46 kg·N·ha−1 in two split applications (1/2 dose at sowing and 1/2 dose at tillering stage) can be recommended for farmers for production of sorghum in the study area”
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fertilization · yield · SorghumPositive and negative results
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