Abstract
ABSTRACT Management of nitrogen (N) fertilization, in terms of rate, timing, and method of application, influence the yield and quality of potatoes. Optimal management of N and irrigation is important to improve N uptake efficiency, and minimize N losses while maintaining high yields and quality. Management of these inputs becomes a challenge in sandy soils, which are vulnerable for leaching of water and soluble nutrients. Real-time continuous monitoring of soil water within and below the rootzone is important to improve scheduling of irrigation to ensure adequate supply of water for plant growth and tuber production, without the risk of excessive leaching of water below the rootzone, which can contribute to leaching of soluble nutrients. Field studies conducted at various production regions show that a combination of pre-plant and in-season N application is necessary to increase N uptake efficiency, and produce high yields of high quality potatoes. The rates and timing of application of pre-plant and in-season N appeared to vary to some extent in different production regions. Excessive N applications contribute to excess vine growth at the expense of the tuber production. The production conditions must be favorable for translocation of N from vines to the tubers. Maintaining adequate supply of N availability in the soil is particularly important through the tuber bulking stage.
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Claims 6
Claim · model-written summary
Combining pre-plant and in-season nitrogen increased uptake efficiency.
- Taxon
- potatoes
Solanum tuberosume0 - Treatment
- combination of pre-plant and in-season N applicatione0
- Outcome
- N uptake efficiencye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combination of pre-plant and in-season N application is necessary to increase N uptake efficiency, and produce high yields of high quality potatoes”
Claim · model-written summary
Combining pre-plant and in-season nitrogen produced high yields and quality.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- combination of pre-plant and in-season N applicatione0
- Outcome
- yields of high quality potatoese0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combination of pre-plant and in-season N application is necessary to increase N uptake efficiency, and produce high yields of high quality potatoes”
Claim · model-written summary
Optimal nitrogen rates and timing varied among production regions.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- rates and timing of applicatione0
- Direction
- varye0
- Setting
- different production regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rates and timing of application of pre-plant and in-season N appeared to vary to some extent in different production regions.”
t0“Potato”
Claim · model-written summary
Excess nitrogen increased vine growth at the expense of tuber production.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- vinee0
- Treatment
- Excessive N applicationse0
- Outcome
- vine growthe0
- Direction
- excesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive N applications contribute to excess vine growth at the expense of the tuber production.”
t0“Potato”
Claim · model-written summary
Excess nitrogen reduced tuber production relative to vine growth.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Excessive N applicationse0
- Outcome
- tuber productione0
- Direction
- at the expense ofe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive N applications contribute to excess vine growth at the expense of the tuber production.”
t0“Potato”
Claim · model-written summary
Adequate soil nitrogen supply was considered particularly important through tuber bulking.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- tuber bulking stagee0
- Outcome
- Maintaining adequate supply of N availability in the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maintaining adequate supply of N availability in the soil is particularly important through the tuber bulking stage.”
t0“Potato”
The same questions in other papers
nitrogen · quality: general · Solanum tuberosum (potato)Positive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
6 papers more in this group
See all 10 papers →nitrogen · nutrient: efficiency · Solanum tuberosum (potato)Positive and negative results
10 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
10 papers more in this group
See all 14 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.