Abstract
Today’s agriculture sector faces a complex series of challenges to cope with the demands for sustainable management and production, which entails an increase in food production to ensure food security while using less water per unit of output and reducing nitrogen (N) fertilizer losses through leaching. The experiment was conducted at Adami Tulu Agricultural Research Center on-station to study the effect of different irrigation levels and N-fertilizer rates on plant height, bulb yield, bulb diameter, and bulb height and water productivity of onion. The treatments of the experiment had factorial combinations of three levels of watering and four N-fertilizer amounts. Results indicated that the highest plant height (53.07 cm), bulb height (6.13 cm), bulb diameter (6.21 cm), marketable bulb yield (241.39 qt/ha) and total bulb yield (252.89 qt/ha) were obtained from full irrigation and fully N-fertilized compared to the deficit conditions. The highest water productivity was recorded from 60% ETc irrigation level and 150 Kg/ha N-fertilizer application rate, but the reduction in water productivity with 80% ETc and 150 Kg/ha N-fertilizer application rate was not significant. Hence, if water is not limiting factor, 100% ETc irrigation level and 150 Kg/ha N-fertilizer could be suggested to apply. But if water becomes 232 limiting factor, 80% ETc irrigation level with 150 Kg/ha N-fertilizer would be more appropriate for growing onion in the study area. Therefore these can be used as one package of onion production technology and all growers better to apply.
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Claims 9
Claim · model-written summary
Onion plant height was highest (53.07 cm) under full irrigation with full N fertilization compared with deficit conditions.
- Taxon
- Onion
Allium cepat0 - Treatment
- full irrigation and fully N-fertilizede1
- Outcome
- plant heighte0
- Direction
- higheste0
- Value
- 53.07 cme0
- Comparator
- deficit conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height (53.07 cm)”
e1“were obtained from full irrigation and fully N-fertilized compared to the deficit conditions”
t0“Onion”
Claim · model-written summary
Onion bulb height was highest (6.13 cm) under full irrigation with full N fertilization compared with deficit conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- full irrigation and fully N-fertilizede1
- Outcome
- bulb heighte0
- Direction
- higheste0
- Value
- 6.13 cme0
- Comparator
- deficit conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height (53.07 cm), bulb height (6.13 cm)”
e1“were obtained from full irrigation and fully N-fertilized compared to the deficit conditions”
t0“Onion”
Claim · model-written summary
Onion bulb diameter was highest (6.21 cm) under full irrigation with full N fertilization compared with deficit conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- full irrigation and fully N-fertilizede1
- Outcome
- bulb diametere0
- Direction
- higheste0
- Value
- 6.21 cme0
- Comparator
- deficit conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height (53.07 cm), bulb height (6.13 cm), bulb diameter (6.21 cm)”
e1“were obtained from full irrigation and fully N-fertilized compared to the deficit conditions”
t0“Onion”
Claim · model-written summary
Onion marketable bulb yield was highest (241.39 qt/ha) under full irrigation with full N fertilization compared with deficit conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- full irrigation and fully N-fertilizede1
- Outcome
- marketable bulb yielde0
- Direction
- higheste0
- Value
- 241.39 qt/hae0
- Comparator
- deficit conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height (53.07 cm), bulb height (6.13 cm), bulb diameter (6.21 cm), marketable bulb yield (241.39 qt/ha)”
e1“were obtained from full irrigation and fully N-fertilized compared to the deficit conditions”
t0“Onion”
Claim · model-written summary
Onion total bulb yield was highest (252.89 qt/ha) under full irrigation with full N fertilization compared with deficit conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- full irrigation and fully N-fertilizede1
- Outcome
- total bulb yielde0
- Direction
- higheste0
- Value
- 252.89 qt/hae0
- Comparator
- deficit conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height (53.07 cm), bulb height (6.13 cm), bulb diameter (6.21 cm), marketable bulb yield (241.39 qt/ha) and total bulb yield (252.89 qt/ha)”
e1“were obtained from full irrigation and fully N-fertilized compared to the deficit conditions”
t0“Onion”
Claim · model-written summary
Onion water productivity was highest at the 60% ETc irrigation level with 150 Kg/ha N-fertilizer.
- Taxon
- OnionAllium cepat0
- Treatment
- 60% ETc irrigation level and 150 Kg/ha N-fertilizer application ratee0
- Outcome
- water productivitye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest water productivity was recorded from 60% ETc irrigation level and 150 Kg/ha N-fertilizer application rate”
t0“Onion”
Claim · model-written summary
The reduction in onion water productivity at 80% ETc with 150 Kg/ha N-fertilizer was not significant.
- Taxon
- OnionAllium cepat0
- Treatment
- 80% ETc and 150 Kg/ha N-fertilizer application ratee0
- Outcome
- water productivitye0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction in water productivity with 80% ETc and 150 Kg/ha N-fertilizer application rate was not significant”
t0“Onion”
Claim · model-written summary
If water is not limiting, 100% ETc irrigation with 150 Kg/ha N-fertilizer is suggested for onion.
- Taxon
- OnionAllium cepat0
- Outcome
- 100% ETc irrigation level and 150 Kg/ha N-fertilizere0
- Qualifier
- if water is not limiting factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“if water is not limiting factor, 100% ETc irrigation level and 150 Kg/ha N-fertilizer could be suggested to apply”
t0“Onion”
Claim · model-written summary
If water is limiting, 80% ETc irrigation with 150 Kg/ha N-fertilizer is more appropriate for growing onion in the study area.
- Taxon
- onionAllium cepae0
- Outcome
- 80% ETc irrigation level with 150 Kg/ha N-fertilizere0
- Qualifier
- if water becomes 232 limiting factore0
- Setting
- the study areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“if water becomes 232 limiting factor, 80% ETc irrigation level with 150 Kg/ha N-fertilizer would be more appropriate for growing onion in the study area”
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