Abstract
Two field experiments were conducted at Sakha Agricultural Research Station, Kafr-EL-Sheikh Govemorate during the two successive seasons 2002 - 2003 and 2003 - 2004 to investigate the effect of soil K-fertilizer at 100 and 50 % of the recommended rate (24 kg K20/fed), foliar application with growth regulators (IAA and/or Kinetin) at levels of 104 and 104 Molar and their combination on some physiochemical properties and yields of sugar beet plants. The results indicate the following: 1- Decreasing K-rate from 24 to 12 kg K20/fed led to obvious reduction in root diameter and length, fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar. Decreasing the K-rate also decreased the chemical properties namely: individual sugars, invertase activity and mineral elementals composition. Meantime, root impurities (K and ()- amino N) and some technological parameters, i.e. sugar lost in molasses (WI), extractable sugar (Ex s) and alkalinity coefficient (AC) showed the same trend. On the contrary, decreasing the K-rate only increased juice purity and Na % in the juice. 2- Growth regulators (IAA or KO affected positively most of above traits except invertase activity and juice purity. This effect was increased with the increase in their concentrations. 3- K- fertilizer combined with MA or 1G gave the same trend as that of the tested growth regulators when used alone. 4- Foliar sprays with MA alone or combined with K-fertilizer was more effective than 1G treatments. Based on, the above results It could be recommended to use K-fertilizer at 12 kg K20/fed combined with MA at 104 to improve juice quality of sugar beet root and reduce environmental pollution.
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Claims 12
Claim · model-written summary
Decreasing K-rate from 24 to 12 kg K2O/fed reduced sugar beet root diameter and length.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise2 - Treatment
- Decreasing K-rate from 24 to 12 kg K20/fede3
- Outcome
- root diameter and lengthe3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e3“Decreasing K-rate from 24 to 12 kg K20/fed led to obvious reduction in root diameter and length, fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar”
Claim · model-written summary
Decreasing K-rate reduced fresh and dry weights of root and top and leaf area of sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Decreasing K-rate from 24 to 12 kg K20/fede3
- Outcome
- fresh and dry weights of root and top, leaf areae4
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e3“Decreasing K-rate from 24 to 12 kg K20/fed led to obvious reduction in root diameter and length, fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar”
e4“fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar”
Claim · model-written summary
Decreasing K-rate reduced root, top and sugar yields of sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Decreasing K-rate from 24 to 12 kg K20/fede3
- Outcome
- yields of roots, tops and sugare4
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e3“Decreasing K-rate from 24 to 12 kg K20/fed led to obvious reduction in root diameter and length, fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar”
e4“fresh and dry weights of root and top, leaf area and yields of roots, tops and sugar”
Claim · model-written summary
Decreasing the K-rate decreased individual sugars, invertase activity and mineral element composition of sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Decreasing the K-ratee5
- Outcome
- individual sugars, invertase activity and mineral elementals compositione5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e5“Decreasing the K-rate also decreased the chemical properties namely: individual sugars, invertase activity and mineral elementals composition”
Claim · model-written summary
Decreasing K-rate showed the same trend as the other chemical properties for root impurities (K and α-amino N) in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Outcome
- root impurities (K and ()- amino N)e6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e6“Meantime, root impurities (K and ()- amino N) and some technological parameters, i.e. sugar lost in molasses (WI), extractable sugar (Ex s) and alkalinity coefficient (AC) showed the same trend”
Claim · model-written summary
Decreasing K-rate showed the same trend for sugar lost in molasses, extractable sugar and alkalinity coefficient in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Outcome
- sugar lost in molasses (WI), extractable sugar (Ex s) and alkalinity coefficient (AC)e6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e6“Meantime, root impurities (K and ()- amino N) and some technological parameters, i.e. sugar lost in molasses (WI), extractable sugar (Ex s) and alkalinity coefficient (AC) showed the same trend”
Claim · model-written summary
Decreasing K-rate increased juice purity and Na % in the juice of sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- decreasing the K-ratee7
- Outcome
- juice purity and Na % in the juicee7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e7“On the contrary, decreasing the K-rate only increased juice purity and Na % in the juice”
Claim · model-written summary
Growth regulators IAA or kinetin affected most growth and yield traits of sugar beet positively, except invertase activity and juice purity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Growth regulators (IAA or KOe0
- Outcome
- most of above traitse0
- Direction
- affected positivelye0
- Qualifier
- except invertase activity and juice puritye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e0“Growth regulators (IAA or KO affected positively most of above traits except invertase activity and juice purity”
Claim · model-written summary
The effect of growth regulators on sugar beet increased with their concentration.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Growth regulators (IAA or KOe0
- Outcome
- effecte1
- Direction
- increasede1
- Qualifier
- with the increase in their concentrationse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e0“Growth regulators (IAA or KO affected positively most of above traits except invertase activity and juice purity”
e1“This effect was increased with the increase in their concentrations”
Claim · model-written summary
K-fertilizer combined with MA or 1G gave the same trend in sugar beet as the tested growth regulators used alone.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- K- fertilizer combined with MA or 1Ge0
- Outcome
- trende0
- Direction
- same trende0
- Comparator
- tested growth regulatorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e0“K- fertilizer combined with MA or 1G gave the same trend as that of the tested growth regulators when used alone”
Claim · model-written summary
Foliar sprays with MA alone or with K-fertilizer were more effective on sugar beet than 1G treatments.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise2
- Treatment
- Foliar sprays with MA alone or combined with K-fertilizere0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- 1G treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“yields of sugar beet plants”
e0“Foliar sprays with MA alone or combined with K-fertilizer was more effective than 1G treatments”
Claim · model-written summary
K-fertilizer at 12 kg K2O/fed combined with MA is recommended to improve juice quality of sugar beet root and reduce environmental pollution.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- K-fertilizer at 12 kg K20/fed combined with MA at 104e0
- Outcome
- improve juice qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It could be recommended to use K-fertilizer at 12 kg K20/fed combined with MA at 104 to improve juice quality of sugar beet root and reduce environmental pollution”
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