Abstract
In order to investigate the effects of water stress and different levels of N fertilizer on yield and water useefficiency in sugar beet (Var. BP) a split plots based on randomized complete block design was carried out with4 replications in Khorasan Agricultural and Natural Resources Research Center (KANRC) during croppingseason in 2006. Water treatments comprising three levels including control (without water stress), initial waterstress and continuous water stress as main plots and different amounts of N fertilizer in 4 levels vis: control (0),50, 100 and 150 Kg net N. ha-1 as sub plots were assessed. Analysis of variation showed that effects of watertreatments on root yield and gross sugar content was significant (at 1% level). Different levels of N also havesignificant effect on root yield, net and gross sugar percent at 1% level while didn't influence net sugar yieldsignificantly. Interaction of water and N wasn’t significant for all the traits. Water use efficiency for root(WUEr) and for sugar (WUEs) were significant in irrigation amounts (P< 0.05) However, results showed thatincreased root yield under no water stress conditions with increased N amount was much more than it in waterstress conditions. In terms of root yield, no water stress treatment using 150 Kg Net N.ha-1 had the highest yield.But water stress treatment particularly constant water stress, caused the maximum water use efficiency.
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Claims 10
Claim · model-written summary
Water treatments significantly affected root yield.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise1 - Treatment
- watertreatmentse0
- Outcome
- root yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of watertreatments on root yield and gross sugar content was significant (at 1% level)”
e1“sugar beet (Var. BP)”
Claim · model-written summary
Water treatments significantly affected gross sugar content.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- watertreatmentse0
- Outcome
- gross sugar contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of watertreatments on root yield and gross sugar content was significant (at 1% level)”
e1“sugar beet (Var. BP)”
Claim · model-written summary
Nitrogen levels significantly affected root yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- Different levels of Ne0
- Outcome
- root yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different levels of N also havesignificant effect on root yield, net and gross sugar percent at 1% level”
e1“sugar beet (Var. BP)”
Claim · model-written summary
Nitrogen levels significantly affected net and gross sugar percentage.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- Different levels of Ne0
- Outcome
- net and gross sugar percente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Different levels of N also havesignificant effect on root yield, net and gross sugar percent at 1% level”
e1“sugar beet (Var. BP)”
Claim · model-written summary
Nitrogen levels did not significantly affect net sugar yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Different levels of Ne1
- Outcome
- net sugar yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“didn’t influence net sugar yieldsignificantly”
e1“Different levels of N”
e2“sugar beet (Var. BP)”
Claim · model-written summary
Water and nitrogen interaction was not significant for the evaluated traits.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Outcome
- Interaction of water and Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interaction of water and N wasn’t significant for all the traits”
e1“sugar beet (Var. BP)”
Claim · model-written summary
Irrigation amounts significantly affected water use efficiency for root and sugar.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- irrigation amountse0
- Outcome
- Water use efficiency for root(WUEr) and for sugar (WUEs)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water use efficiency for root(WUEr) and for sugar (WUEs) were significant in irrigation amounts (P< 0.05)”
e1“sugar beet (Var. BP)”
Claim · model-written summary
The root yield gain from more nitrogen was greater without water stress than with water stress.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- increased N amounte0
- Outcome
- root yielde0
- Direction
- increasede0
- Comparator
- waterstress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased root yield under no water stress conditions with increased N amount was much more than it in waterstress conditions”
e1“sugar beet (Var. BP)”
Claim · model-written summary
No water stress with 150 Kg Net N.ha-1 gave the highest root yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- no water stress treatment using 150 Kg Net N.ha-1e0
- Outcome
- root yielde1
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no water stress treatment using 150 Kg Net N.ha-1 had the highest yield”
e1“In terms of root yield”
e2“sugar beet (Var. BP)”
Claim · model-written summary
Constant water stress gave maximum water use efficiency.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- constant water stresse0
- Outcome
- water use efficiencye0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water stress treatment particularly constant water stress, caused the maximum water use efficiency”
e1“sugar beet (Var. BP)”
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