Abstract
Evaluating supplementary irrigation under rain‐fed agriculture could help to determine the amount of water depth for water management and increasing productivity. Thus, this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production. Eight treatments with three replications on a field plot of 9 m 2 were used for conducting the experiment. Crop water requirement (ETc) was calculated from reference evapotranspiration (ETo) and crop coefficient (Kc) using CropWat 8.0 software. Yield and yield component data were collected from the field and analyzed using the statistical analysis system (SAS) software 9.0. The result revealed that root shoulder diameter, fresh biomass, and fresh root weight had significant ( p < 0.05) effects between the treatments, but there was no significant difference ( p > 0.05) between treatments on plant height and carrot root length at both locations. The highest and lowest plant heights were recorded at 75% SI and at a rain‐fed treatment. A root shoulder diameters of 38.37 and 37.86 mm were recorded at Jimma and Gera, respectively, from the application of 75% and two SI at flowering and fruit setting treatment. The application of 75% SI gave the highest root length. A maximum fresh biomass of 3,038.6 kg/ha was obtained at 75% SI, and a minimum fresh biomass of 1,640.00 kg/ha was recorded from the rain‐fed treatment at JARC. Application of 75% SI gave the maximum fresh biomass (2,388.9 kg/ha) at Gera, and a minimum fresh biomass of 1,277.8 kg/ha was recorded from rain fed. An application of 75% SI gave the highest fresh root weight of 7,430.6 kg/ha at JARC. In the study, the application of 75% SI gave the highest (6,388.9 kg/ha) fresh root weight, and the lowest was recorded at rain fed (3,883.3 kg/ha). Therefore, for optimum production, 75% SI was recommended for the production of carrots. The total net benefit from the production of carrots was in the range of 36,659–46,950 ETB per hectare at Jimma and from 24,828 up to 39,399 ETB per hectar at Gera. The maximum and minimum marginal return rate (MRR) at Jimma were 300.97%, which is at 75% SI and 43.69%, which is at 25% supplementary irrigation, respectively. At Gera, the maximum and minimum MRR were 490.95%, which were at 25% supplementary irrigation, and the minimum was 23.18%, which was at full supplementary irrigation. Therefore, to get an economic benefit, supplementing carrot crop at 75% irrigation was recommended for both Gera and JARC.
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Claims 19
Claim · model-written summary
Supplementary irrigation significantly affected carrot root shoulder diameter, fresh biomass and fresh root weight.
- Taxon
- carrot
Daucus carotae2 - Treatment
- supplementary irrigation (SI)e2
- Outcome
- root shoulder diameter, fresh biomass, and fresh root weighte3
- Qualifier
- p < 0.05e3
- Setting
- Jimma and Gerae2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e3“root shoulder diameter, fresh biomass, and fresh root weight had significant ( p < 0.05) effects between the treatments”
Claim · model-written summary
Supplementary irrigation did not significantly change carrot plant height or root length.
- Taxon
- carrotDaucus carotae2
- Treatment
- supplementary irrigation (SI)e2
- Outcome
- plant height and carrot root lengthe3
- Direction
- no significant differencee3
- Qualifier
- p > 0.05e3
- Setting
- Jimma and Gerae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e3“there was no significant difference ( p > 0.05) between treatments on plant height and carrot root length at both locations”
Claim · model-written summary
The highest plant height was recorded at 75% supplementary irrigation and the lowest at the rain-fed treatment.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe4
- Outcome
- plant heighte4
- Direction
- higheste4
- Comparator
- rain‐fed treatmente4
- Setting
- Jimma and Gerae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e4“The highest and lowest plant heights were recorded at 75% SI and at a rain‐fed treatment”
Claim · model-written summary
The 75% supplementary irrigation treatment gave the highest carrot root length.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe6
- Outcome
- root lengthe6
- Direction
- higheste6
- Setting
- Jimma and Gerae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e6“The application of 75% SI gave the highest root length”
Claim · model-written summary
Root shoulder diameter was 38.37 and 37.86 mm at Jimma and Gera with 75% and two supplementary irrigations at flowering and fruit setting.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% and two SI at flowering and fruit settinge5
- Outcome
- root shoulder diameterse5
- Value
- 38.37 and 37.86 mme5
- Setting
- Jimma and Gerae5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e5“A root shoulder diameters of 38.37 and 37.86 mm were recorded at Jimma and Gera, respectively, from the application of 75% and two SI at flowering and fruit setting treatment”
Claim · model-written summary
The maximum fresh biomass of carrot, 3,038.6 kg/ha, was obtained at 75% supplementary irrigation at JARC.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe7
- Outcome
- fresh biomasse7
- Direction
- maximume7
- Value
- 3,038.6 kg/hae7
- Setting
- JARCe7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e7“A maximum fresh biomass of 3,038.6 kg/ha was obtained at 75% SI, and a minimum fresh biomass of 1,640.00 kg/ha was recorded from the rain‐fed treatment at JARC”
Claim · model-written summary
The minimum fresh biomass of carrot, 1,640.00 kg/ha, was recorded at JARC under the rain-fed treatment.
- Taxon
- carrotDaucus carotae2
- Treatment
- rain‐fed treatmente7
- Outcome
- fresh biomasse7
- Direction
- minimume7
- Value
- 1,640.00 kg/hae7
- Setting
- JARCe7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e7“A maximum fresh biomass of 3,038.6 kg/ha was obtained at 75% SI, and a minimum fresh biomass of 1,640.00 kg/ha was recorded from the rain‐fed treatment at JARC”
Claim · model-written summary
The maximum fresh biomass of carrot, 2,388.9 kg/ha, was obtained at 75% supplementary irrigation at Gera.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe3
- Outcome
- fresh biomasse3
- Direction
- maximume3
- Value
- 2,388.9 kg/hae3
- Setting
- Gerae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e3“Application of 75% SI gave the maximum fresh biomass (2,388.9 kg/ha) at Gera, and a minimum fresh biomass of 1,277.8 kg/ha was recorded from rain fed”
Claim · model-written summary
The minimum fresh biomass of carrot, 1,277.8 kg/ha, was recorded at Gera under rain fed.
- Taxon
- carrotDaucus carotae2
- Treatment
- rain fede3
- Outcome
- fresh biomasse3
- Direction
- minimume3
- Value
- 1,277.8 kg/hae3
- Setting
- Gerae3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e3“Application of 75% SI gave the maximum fresh biomass (2,388.9 kg/ha) at Gera, and a minimum fresh biomass of 1,277.8 kg/ha was recorded from rain fed”
Claim · model-written summary
The highest fresh root weight of carrot, 7,430.6 kg/ha, was obtained with 75% supplementary irrigation at JARC.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe4
- Outcome
- fresh root weighte4
- Direction
- higheste4
- Value
- 7,430.6 kg/hae4
- Setting
- JARCe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e4“An application of 75% SI gave the highest fresh root weight of 7,430.6 kg/ha at JARC”
Claim · model-written summary
The highest fresh root weight of carrot, 6,388.9 kg/ha, was obtained with 75% supplementary irrigation in the study.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe5
- Outcome
- fresh root weighte5
- Direction
- higheste5
- Value
- 6,388.9 kg/hae5
- Setting
- Jimma and Gerae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e5“In the study, the application of 75% SI gave the highest (6,388.9 kg/ha) fresh root weight, and the lowest was recorded at rain fed (3,883.3 kg/ha)”
Claim · model-written summary
The lowest fresh root weight of carrot, 3,883.3 kg/ha, was recorded under rain fed.
- Taxon
- carrotDaucus carotae2
- Treatment
- rain fede5
- Outcome
- fresh root weighte5
- Direction
- loweste5
- Value
- 3,883.3 kg/hae5
- Setting
- Jimma and Gerae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e5“In the study, the application of 75% SI gave the highest (6,388.9 kg/ha) fresh root weight, and the lowest was recorded at rain fed (3,883.3 kg/ha)”
Claim · model-written summary
The authors recommend 75% supplementary irrigation for optimum carrot production.
- Taxon
- carrotsDaucus carotae6
- Treatment
- 75% SIe6
- Outcome
- optimum productione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Therefore, for optimum production, 75% SI was recommended for the production of carrots”
Claim · model-written summary
The total net benefit of carrot production at Jimma was 36,659–46,950 ETB per hectare.
- Taxon
- carrotsDaucus carotae7
- Outcome
- total net benefite7
- Value
- 36,659–46,950 ETB per hectaree7
- Setting
- Jimmae7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The total net benefit from the production of carrots was in the range of 36,659–46,950 ETB per hectare at Jimma and from 24,828 up to 39,399 ETB per hectar at Gera”
Claim · model-written summary
The total net benefit of carrot production at Gera was 24,828 up to 39,399 ETB per hectare.
- Taxon
- carrotsDaucus carotae7
- Outcome
- total net benefite7
- Value
- 24,828 up to 39,399 ETB per hectare7
- Setting
- Gerae7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The total net benefit from the production of carrots was in the range of 36,659–46,950 ETB per hectare at Jimma and from 24,828 up to 39,399 ETB per hectar at Gera”
Claim · model-written summary
The maximum marginal return rate of carrot at Jimma, 300.97%, was obtained at 75% supplementary irrigation.
- Taxon
- carrotDaucus carotae2
- Treatment
- 75% SIe1
- Outcome
- marginal return rate (MRR)e1
- Direction
- maximume1
- Value
- 300.97%e1
- Setting
- Jimmae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e1“The maximum and minimum marginal return rate (MRR) at Jimma were 300.97%, which is at 75% SI and 43.69%, which is at 25% supplementary irrigation, respectively”
Claim · model-written summary
The minimum marginal return rate of carrot at Jimma, 43.69%, was obtained at 25% supplementary irrigation.
- Taxon
- carrotDaucus carotae2
- Treatment
- 25% supplementary irrigatione1
- Outcome
- marginal return rate (MRR)e1
- Direction
- minimume1
- Value
- 43.69%e1
- Setting
- Jimmae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e1“The maximum and minimum marginal return rate (MRR) at Jimma were 300.97%, which is at 75% SI and 43.69%, which is at 25% supplementary irrigation, respectively”
Claim · model-written summary
The maximum marginal return rate of carrot at Gera, 490.95%, was obtained at 25% supplementary irrigation.
- Taxon
- carrotDaucus carotae2
- Treatment
- 25% supplementary irrigatione1
- Outcome
- MRRe1
- Direction
- maximume1
- Value
- 490.95%e1
- Setting
- Gerae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e1“At Gera, the maximum and minimum MRR were 490.95%, which were at 25% supplementary irrigation, and the minimum was 23.18%, which was at full supplementary irrigation”
Claim · model-written summary
The minimum marginal return rate of carrot at Gera, 23.18%, was obtained at full supplementary irrigation.
- Taxon
- carrotDaucus carotae2
- Treatment
- full supplementary irrigatione1
- Outcome
- MRRe1
- Direction
- minimume1
- Value
- 23.18%e1
- Setting
- Gerae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“this study was conducted at the Jimma and Gera to determine the effect of supplementary irrigation (SI) on carrot production”
e1“At Gera, the maximum and minimum MRR were 490.95%, which were at 25% supplementary irrigation, and the minimum was 23.18%, which was at full supplementary irrigation”
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See all 25 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.