Abstract
Abstract Over the past 4 decades, sucrose content of sugarbeets ( Beta vulgaris L.) has decreased while root yield has increased. Reasons reported include processing of more crown material, because mechanical harvesting removes less crown tissue than hand‐topping methods, and incre ased use of N fertilizer. Our objective was to determine the relationship between N application rate and sugarbeet crown tissue production, and its effects on processing quality of sugarbeets. Reported are the results of two studies conducted in 1975 and one in 1976, each using a different sugarbeet cultivar and seven N rates. Green petiole material was removed before each sugarbeet was sectioned into root and crown tissues for yield and quality analyses. Crown tissue increased linearly as rates of N application increased. Root tissue and recoverable sucrose yields were near maximum when spring soil NO 3 ‐N or soil NO 3 ‐N plus added N reached 200 to 225 kg/ha. At higher N levels, crown tissue yield increased and sucrose content in both root and crown tissues decreased, offsetting any potential benefits from increased whole beet yield. When N was adequate for maximmn sucrose production, crown tissue contributed approximately 20% of the total recoverable sucrose per ha. As N rate increased, sucrose concentration, extractable sucrose per metric ton, and purity decreased whereas Na, K, amino‐N, invert sugar, and imaturity index values increased for both root and crown tissues. Root tissue always had higher levels than crown tissue of extractable sucrose and purity and lower levels of Na, amino‐N, invert sugar, and impurity index. Crown tissue production can be minimized, and processing quality of sngarbeets can be improved by conservative use of N fertilizer.
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Claims 13
Claim · model-written summary
Crown tissue increased linearly as nitrogen application increased.
- Taxon
- sugarbeets
Beta vulgaris subsp. vulgarise1 - Treatment
- rates of N applicatione0
- Outcome
- Crown tissuee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crown tissue increased linearly as rates of N application increased.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
Root tissue yield was near its maximum at 200 to 225 kg/ha soil nitrate nitrogen plus added nitrogen.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- soil NO 3 ‐N plus added Ne0
- Outcome
- Root tissuee0
- Direction
- near maximume0
- Value
- 200 to 225 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root tissue and recoverable sucrose yields were near maximum when spring soil NO 3 ‐N or soil NO 3 ‐N plus added N reached 200 to 225 kg/ha.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
Recoverable sucrose yield was near its maximum at 200 to 225 kg/ha soil nitrate nitrogen plus added nitrogen.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- soil NO 3 ‐N plus added Ne0
- Outcome
- recoverable sucrose yieldse0
- Direction
- near maximume0
- Value
- 200 to 225 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root tissue and recoverable sucrose yields were near maximum when spring soil NO 3 ‐N or soil NO 3 ‐N plus added N reached 200 to 225 kg/ha.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
At higher nitrogen levels, crown tissue yield increased.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- higher N levelse0
- Outcome
- crown tissue yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At higher N levels, crown tissue yield increased and sucrose content in both root and crown tissues decreased”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
At higher nitrogen levels, sucrose content in root and crown tissue decreased.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- higher N levelse0
- Outcome
- sucrose content in both root and crown tissuese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At higher N levels, crown tissue yield increased and sucrose content in both root and crown tissues decreased”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
With adequate nitrogen for maximum sucrose production, crown tissue provided about 20% of recoverable sucrose per hectare.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Organ / stage
- crown tissuee0
- Outcome
- total recoverable sucrose per hae0
- Value
- approximately 20%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When N was adequate for maximmn sucrose production, crown tissue contributed approximately 20% of the total recoverable sucrose per ha.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
As nitrogen increased, sucrose concentration, extractable sucrose and purity decreased in roots and crowns.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- N ratee0
- Outcome
- sucrose concentration, extractable sucrose per metric ton, and puritye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As N rate increased, sucrose concentration, extractable sucrose per metric ton, and purity decreased whereas Na, K, amino‐N, invert sugar, and imaturity index values increased for both root and crown tissues.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
As nitrogen increased, sodium, potassium and amino nitrogen increased in roots and crowns.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- N ratee0
- Outcome
- Na, K, amino‐Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As N rate increased, sucrose concentration, extractable sucrose per metric ton, and purity decreased whereas Na, K, amino‐N, invert sugar, and imaturity index values increased for both root and crown tissues.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
As nitrogen increased, invert sugar and immaturity index increased in roots and crowns.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Treatment
- N ratee0
- Outcome
- invert sugar, and imaturity index valuese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As N rate increased, sucrose concentration, extractable sucrose per metric ton, and purity decreased whereas Na, K, amino‐N, invert sugar, and imaturity index values increased for both root and crown tissues.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
Root tissue had more extractable sucrose and higher purity than crown tissue.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Organ / stage
- Root tissuee0
- Outcome
- extractable sucrose and puritye0
- Direction
- highere0
- Comparator
- crown tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root tissue always had higher levels than crown tissue of extractable sucrose and purity”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
Root tissue had less sodium, amino nitrogen and invert sugar than crown tissue.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Organ / stage
- Root tissuee0
- Outcome
- Na, amino‐N, invert sugare0
- Direction
- lowere0
- Comparator
- crown tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root tissue always had higher levels than crown tissue of extractable sucrose and purity and lower levels of Na, amino‐N, invert sugar, and impurity index.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
Root tissue had a lower impurity index than crown tissue.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Organ / stage
- Root tissuee0
- Outcome
- impurity indexe0
- Direction
- lowere0
- Comparator
- crown tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root tissue always had higher levels than crown tissue of extractable sucrose and purity and lower levels of Na, amino‐N, invert sugar, and impurity index.”
e1“sugarbeets ( Beta vulgaris L.)”
Claim · model-written summary
The authors recommend conservative nitrogen use to minimize crowns and improve processing quality.
- Taxon
- sugarbeetsBeta vulgaris subsp. vulgarise1
- Outcome
- conservative use of N fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crown tissue production can be minimized, and processing quality of sngarbeets can be improved by conservative use of N fertilizer.”
e1“sugarbeets ( Beta vulgaris L.)”
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