Abstract
Cercospora leaf spot incited by Cercospora beticola Sacc. is a very detrimental fungal disease affecting sugar beet crop production in Egypt as well as sugar yield. The efficacy of four selected commercial biocides i.e., Biobac, Bio-Arc, Bio-Zeid and Plant Guard, was investigated to control Cercospora leaf spot on sugar beet plants in comparison with the recommended fungicide Score as a check difenoconazole fungicide as well as untreated control under field conditions at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, Egypt. The biocides and fungicide were sprayed at different three spray regimes as two sprays, four sprays or six sprays with 15 days intervals between sprays for such treatment. All tested biocides and Score fungicide led to significant decrease in Cercospora leaf spot disease severity of the treated sugar beet plants in comparison with control treatment. Increasing spraying numbers of the tested biocides or Score fungicide from two times to six sprays per season caused increasing reduction of Cercospora leaf spot severity. Spraying Plant guard, Bio-Zeid and Biobac biocides six times achieved very comparable effectiveness to Score treatment at the same spray regime in the two growing seasons 2015/2016 and 2016/2017, whereas, Bio-Arc was the less effective biocide treatment particularly when sprayed two times per season. All tested biocides at different spraying regimes led to significant increase in values of phenolic compounds, total chlorophyll, (achieved higher quality traits at the end of the season), sucrose (%) and purity (%) and top, root as well as sugar yield quality of sugar beet were significantly increased. The impurities of produced sugar as sodium, potassium and α-amino nitrogen in the juice were significantly decreased in comparison with untreated control during the two growing seasons. Overall results clarified that spraying Score fungicide or Bio- Zeid, Plant guard and Biobac, respectively six times resulted the highest increase of quality traits as sucrose (%) and purity %) and top, root and sugar yields of sugar beet and significant decrease in total amino acid, juice impurities (Na, K and α-a N %), whereas Bio- Arc when applied two times recorded the least effective treatment close to the control during the two growing seasons 2015/2016 and 2016/2017. It was concluded that biocides, Bio-Zeid, Plant guard and Biobac could be sprayed six times/season at 15 days intervals as alternatives to fungicide applications to control Cercospora leaf spot of sugar beet and to produce higher yields of root and sugar with better quality.
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Claims 11
Claim · model-written summary
All tested biocides reduced Cercospora leaf spot severity versus untreated control.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise0 - Treatment
- All tested biocidese0
- Interactor
- Cercospora beticola Sacc.
Cercospora beticolae1pathogen - Outcome
- Cercospora leaf spot disease severitye0
- Direction
- decreasee0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All tested biocides and Score fungicide led to significant decrease in Cercospora leaf spot disease severity of the treated sugar beet plants in comparison with control treatment”
e1“Cercospora leaf spot incited by Cercospora beticola Sacc.”
Claim · model-written summary
Score fungicide reduced Cercospora leaf spot severity versus untreated control.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- Score fungicidee0
- Interactor
- Cercospora beticola Sacc.Cercospora beticolae1pathogen
- Outcome
- Cercospora leaf spot disease severitye0
- Direction
- decreasee0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All tested biocides and Score fungicide led to significant decrease in Cercospora leaf spot disease severity of the treated sugar beet plants in comparison with control treatment”
e1“Cercospora leaf spot incited by Cercospora beticola Sacc.”
Claim · model-written summary
Increasing spray frequency from two to six increased leaf spot severity reduction.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- six sprays per seasone0
- Interactor
- Cercospora beticola Sacc.Cercospora beticolae1pathogen
- Outcome
- Cercospora leaf spot severitye0
- Direction
- increasing reductione0
- Comparator
- two timese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“Increasing spraying numbers of the tested biocides or Score fungicide from two times to six sprays per season caused increasing reduction of Cercospora leaf spot severity”
e1“Cercospora leaf spot incited by Cercospora beticola Sacc.”
Claim · model-written summary
Six sprays of Plant guard, Bio-Zeid and Biobac had effectiveness comparable to Score in both seasons.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- Plant guard, Bio-Zeid and Biobac biocides six timese0
- Outcome
- effectivenesse0
- Direction
- very comparablee0
- Qualifier
- two growing seasons 2015/2016 and 2016/2017e0
- Comparator
- Score treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“Spraying Plant guard, Bio-Zeid and Biobac biocides six times achieved very comparable effectiveness to Score treatment at the same spray regime in the two growing seasons 2015/2016 and 2016/2017”
Claim · model-written summary
Bio-Arc was the least effective biocide, especially at two sprays.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- Bio-Arce0
- Outcome
- less effective biocide treatmente0
- Direction
- less effectivee0
- Qualifier
- particularly when sprayed two times per seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“Bio-Arc was the less effective biocide treatment particularly when sprayed two times per season”
Claim · model-written summary
Biocides increased phenolics and total chlorophyll.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- All tested biocidese0
- Outcome
- phenolic compounds, total chlorophylle0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“All tested biocides at different spraying regimes led to significant increase in values of phenolic compounds, total chlorophyll”
Claim · model-written summary
Biocides increased sucrose and purity.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- All tested biocidese0
- Outcome
- sucrose (%) and purity (%)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“All tested biocides at different spraying regimes led to significant increase in values of phenolic compounds, total chlorophyll, (achieved higher quality traits at the end of the season), sucrose (%) and purity (%)”
Claim · model-written summary
Biocides increased top, root and sugar yields.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- biocidese1
- Outcome
- top, root as well as sugar yield qualitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“top, root as well as sugar yield quality of sugar beet were significantly increased”
e1“All tested biocides at different spraying regimes”
Claim · model-written summary
Treatments decreased sodium, potassium and α-amino nitrogen impurities versus control.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- impurities of produced sugar as sodium, potassium and α-amino nitrogen in the juicee0
- Direction
- decreasede0
- Comparator
- untreated controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“The impurities of produced sugar as sodium, potassium and α-amino nitrogen in the juice were significantly decreased in comparison with untreated control during the two growing seasons”
Claim · model-written summary
Six sprays of Score, Bio-Zeid, Plant guard or Biobac produced highest sucrose, purity and yields and reduced amino acids and juice impurities.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- Score fungicide or Bio- Zeid, Plant guard and Biobac, respectively six timese0
- Outcome
- highest increase of quality traits as sucrose (%) and purity %) and top, root and sugar yieldse0
- Direction
- highest increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“spraying Score fungicide or Bio- Zeid, Plant guard and Biobac, respectively six times resulted the highest increase of quality traits as sucrose (%) and purity %) and top, root and sugar yields of sugar beet and significant decrease in total amino acid, juice impurities (Na, K and α-a N %)”
Claim · model-written summary
Six biocide sprays per season at 15-day intervals were recommended as a fungicide alternative.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- sprayed six times/season at 15 days intervals as alternatives to fungicide applicationse0
Not reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sugar Beet”
e0“biocides, Bio-Zeid, Plant guard and Biobac could be sprayed six times/season at 15 days intervals as alternatives to fungicide applications to control Cercospora leaf spot of sugar beet and to produce higher yields of root and sugar with better quality”
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See all 12 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.