Abstract
This research aimed to evaluate the impact of different rates of nitrogen (0, 60, 90, and 120 kg/fed.) and potassium (0, 36, 48, and 60 Kg K₂O/fed.) fertilizers on the reproduction of the root-knot nematode, Meloidogyne javanica, and the quantitative and qualitative characters of sugarbeet (Beta vulgaris, cv. Francescan). The findings demonstrated that increasing nitrogen and potassium rates progressively and significantly reduced nematode final population (juveniles in soil and all developmental stages within roots) as well as its reproduction factor. Conversely, high rates of nitrogen and potassium fertilizers significantly (P<0.05) enhanced all measured quantitative characters (including roots, top, raw sugar, and returned sugar yields) and most qualitative characters (such as raw sucrose content, returned sugar content, quality index, and loss sugar yield/fed) showed significant improvement, whereas the percentage of sugar lost in molasses was notably reduced. It could be calculated that the combination of ammonium nitrate at 120 kg N and potassium sulphate at 60 kg K2O per/ fed proved to be the most effective in suppressing nematode reproduction while boosting sugar beet productivity. This approach presents a novel strategy for managing root-knot nematode (M. javanica) in agricultural fields through the integrated application of essential nutrients.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Higher nitrogen and potassium rates significantly reduced nematode final population in soil and roots.
- Taxon
- sugarbeet
Beta vulgaris subsp. vulgarise1 - Treatment
- increasing nitrogen and potassium ratese0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae2pathogen
- Outcome
- nematode final population (juveniles in soil and all developmental stages within roots)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing nitrogen and potassium rates progressively and significantly reduced nematode final population (juveniles in soil and all developmental stages within roots)”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“Meloidogyne javanica”
Claim · model-written summary
Higher nitrogen and potassium rates significantly reduced the nematode reproduction factor.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- increasing nitrogen and potassium ratese0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae2pathogen
- Outcome
- reproduction factore0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing nitrogen and potassium rates progressively and significantly reduced nematode final population (juveniles in soil and all developmental stages within roots) as well as its reproduction factor.”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“Meloidogyne javanica”
Claim · model-written summary
High nitrogen and potassium fertilizer rates significantly increased root, top, raw sugar and returned sugar yields.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- high rates of nitrogen and potassium fertilizerse0
- Outcome
- roots, top, raw sugar, and returned sugar yieldse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high rates of nitrogen and potassium fertilizers significantly (P<0.05) enhanced all measured quantitative characters (including roots, top, raw sugar, and returned sugar yields)”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
Claim · model-written summary
High fertilizer rates significantly improved raw sucrose content, returned sugar content and quality index.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- high rates of nitrogen and potassium fertilizerse2
- Outcome
- raw sucrose content, returned sugar content, quality indexe0
- Direction
- improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most qualitative characters (such as raw sucrose content, returned sugar content, quality index, and loss sugar yield/fed) showed significant improvement”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“high rates of nitrogen and potassium fertilizers”
Claim · model-written summary
High fertilizer rates significantly improved loss sugar yield per feddan.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- high rates of nitrogen and potassium fertilizerse2
- Outcome
- loss sugar yield/fede0
- Direction
- improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“loss sugar yield/fed) showed significant improvement”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“high rates of nitrogen and potassium fertilizers”
Claim · model-written summary
High fertilizer rates reduced the percentage of sugar lost in molasses.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- high rates of nitrogen and potassium fertilizerse2
- Outcome
- percentage of sugar lost in molassese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of sugar lost in molasses was notably reduced.”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“high rates of nitrogen and potassium fertilizers”
Claim · model-written summary
The combined 120 kg N and 60 kg K2O per feddan treatment was most effective at suppressing nematode reproduction.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise1
- Treatment
- combination of ammonium nitrate at 120 kg N and potassium sulphate at 60 kg K2O per/ fede0
- Interactor
- Meloidogyne javanicaMeloidogyne javanicae2pathogen
- Outcome
- nematode reproductione0
- Direction
- suppressinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combination of ammonium nitrate at 120 kg N and potassium sulphate at 60 kg K2O per/ fed proved to be the most effective in suppressing nematode reproduction”
e1“sugarbeet (Beta vulgaris, cv. Francescan)”
e2“Meloidogyne javanica”
Claim · model-written summary
The combined 120 kg N and 60 kg K2O per feddan treatment was most effective at boosting sugar beet productivity.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- combination of ammonium nitrate at 120 kg N and potassium sulphate at 60 kg K2O per/ fede0
- Outcome
- sugar beet productivitye0
- Direction
- boostinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combination of ammonium nitrate at 120 kg N and potassium sulphate at 60 kg K2O per/ fed proved to be the most effective in suppressing nematode reproduction while boosting sugar beet productivity.”
The same questions in other papers
potassium sulfate · yield · Beta vulgaris (beet)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
ammonium nitrate · yield · Beta vulgaris (beet)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →potassium · yield · Beta vulgaris (beet)Results differ
51 papers in the same direction as this paper · 6 in the opposite direction
- no effect
- no effect
- negative
54 papers more in this group
See all 58 papers →nitrogen · quality: sugar starch · Beta vulgaris (beet)Results differ
65 papers in the same direction as this paper · 36 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- negative
99 papers more in this group
See all 103 papers →fertilization · quality: sugar starch · Beta vulgaris (beet)Results differ
87 papers in the same direction as this paper · 17 in the opposite direction
- negative
- no effect
- no effect
101 papers more in this group
See all 105 papers →nitrogen · molecular: metabolites · Beta vulgaris (beet)Positive and negative results
28 papers in the same direction as this paper · 37 in the opposite direction
- no effect
- negative
- negative
62 papers more in this group
See all 66 papers →fertilization · molecular: metabolites · Beta vulgaris (beet)Positive and negative results
44 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
64 papers more in this group
See all 68 papers →nitrogen · yield · Beta vulgaris (beet)Positive and negative results
141 papers in the same direction as this paper · 16 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- no effect
157 papers more in this group
See all 161 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.