Abstract
The current experiment was conducted to control the root-knot nematode; Meloidogyne incognita infecting Thompson seedless grapevines by using eight treatments as follows: some bioagents (Trichoderma harzianum and Arbascular mycorrhizae), some plant oil extracts (orange oil extract and jojoba oil) and plant aqueous extracts (Origanum majorana and Tagetes erecta) in comparison with oxamyl (24% EC) on grapes infected with root-knot nematode to determine its impact on growth and yield of grapevines during two successive seasons (2009 and 2010) under field conditions. The chosen vines were 10-year-old grown in a sandy soil in a private vineyard located in Alexandria-Cairo road, spaced at 1.75 × 2.75 m and irrigated by drip irrigation system where the cane was pruned and trellised by the Y shape system. Bioagents and plant aqueous extracts were added to the soil under the vines three times/week after bud burst. Results showed that all the treatments had a significant effect in reducing the total population and build up of root-knot nematodes, M. incognita in both soil and rots especially after the 3 months from the time of application. In addition they had increased the physical characteristics of both clusters and berries, vegetative growth parameters, macro nutrient content and yield of Thompson seedless grapevines during two studied seasons (2009 and 2010) under field conditions. Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time. They also increased cluster weight, number of clusters, yield per vine as well as enhancing the physical characteristics of berries, TSS % TSS/acidity ratio whereas, acidity was decreased in berry juice and improved vegetative growth parameters and increased the total surface area/vine, wood ripening coefficient, total chlorophyll and percentages of total nitrogen, phosphorus and potassium of leaves. Data of root growth parameters showed that the extension of fine roots through the vertical direction (root density) expressed as length of the fine roots were significantly higher at (30 cm) depth in the soil profile, the horizontal extension of fine roots was more concentrated at the distance of (50 cm) from the vine trunk. All treatments recorded the highest values of medium roots and large roots in both horizontal and vertical directions as compared with the control but lower than oxamyl treatment. On the other hand, the treatments with bioagents (T. harzianum and A. mycorrhizae) were in the intermediate rank, whereas, treatments of plant aqueous extracts (O. majorana and T. erecta) were the least effective in both seasons. It can be concluded that jojoba oil and orange oil extract were the best safe treatments compared with oxamyl (24% EC) in reducing total population and rate of build up of root-knot nematodes, M. incognita and improving fruiting of vines yield and quality of the berries of Thompson seedless grapevines.
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Claims 12
Claim · model-written summary
All treatments significantly reduced root-knot nematode population and buildup in soil and roots.
- Treatment
- all the treatmentse0
- Interactor
- M. incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- total population and build up of root-knot nematodes, M. incognitae0
- Direction
- reducinge0
VitisNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“all the treatments had a significant effect in reducing the total population and build up of root-knot nematodes, M. incognita in both soil and rots especially after the 3 months from the time of application.”
t0“grapevines”
Claim · model-written summary
Treatments increased cluster and berry traits, vegetative growth, macronutrient content and yield.
- Taxon
- Thompson seedless grapevinese0
- Treatment
- theye0
- Outcome
- physical characteristics of both clusters and berries, vegetative growth parameters, macro nutrient content and yielde0
- Direction
- increasede0
- Setting
- field conditionse0
Not reportedComparator
Verbatim
e0“they had increased the physical characteristics of both clusters and berries, vegetative growth parameters, macro nutrient content and yield of Thompson seedless grapevines during two studied seasons (2009 and 2010) under field conditions.”
Claim · model-written summary
Jojoba oil most effectively reduced nematode population and buildup through harvest.
- Treatment
- jojoba oile0
- Interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- total population and rate of build up of M. incognitae0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
t0“grapevines”
Claim · model-written summary
Orange oil extract most effectively reduced nematode population and buildup through harvest.
- Treatment
- orange oil extracte0
- Interactor
- M. incognitaMeloidogyne incognitae0pathogen
- Outcome
- total population and rate of build up of M. incognitae0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
t0“grapevines”
Claim · model-written summary
Oil treatments increased cluster weight, cluster number and yield per vine.
- Treatment
- jojoba oile1
- Outcome
- cluster weight, number of clusters, yield per vinee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They also increased cluster weight, number of clusters, yield per vine”
t0“grapevines”
e1“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
Claim · model-written summary
Oil treatments improved berry physical characteristics, TSS and TSS/acidity ratio.
- Treatment
- orange oil extracte1
- Outcome
- physical characteristics of berries, TSS % TSS/acidity ratioe0
- Direction
- enhancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as well as enhancing the physical characteristics of berries, TSS % TSS/acidity ratio”
t0“grapevines”
e1“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
Claim · model-written summary
Oil treatments decreased berry juice acidity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acidity was decreased in berry juice”
t0“grapevines”
e1“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
Claim · model-written summary
Oil treatments increased leaf chlorophyll and nitrogen, phosphorus and potassium percentages.
- Treatment
- jojoba oile1
- Outcome
- total chlorophyll and percentages of total nitrogen, phosphorus and potassium of leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the total surface area/vine, wood ripening coefficient, total chlorophyll and percentages of total nitrogen, phosphorus and potassium of leaves.”
t0“grapevines”
e1“Both jojoba oil and orange oil extract were the most effective treatments in reducing total population and rate of build up of M. incognita in both soil and roots up to the harvesting time.”
Claim · model-written summary
Fine root length was significantly higher at 30 cm soil depth.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“length of the fine roots were significantly higher at (30 cm) depth in the soil profile”
t0“grapevines”
Claim · model-written summary
Fine roots were most concentrated 50 cm horizontally from the trunk.
- Outcome
- horizontal extension of fine rootse0
- Direction
- more concentratede0
- Setting
- (50 cm) from the vine trunke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the horizontal extension of fine roots was more concentrated at the distance of (50 cm) from the vine trunk.”
t0“grapevines”
Claim · model-written summary
Treatments produced more medium and large roots than controls, but fewer than oxamyl.
- Treatment
- All treatmentse0
- Outcome
- medium roots and large rootse0
- Direction
- highest valuese0
- Qualifier
- lower than oxamyl treatmente0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All treatments recorded the highest values of medium roots and large roots in both horizontal and vertical directions as compared with the control but lower than oxamyl treatment.”
t0“grapevines”
Claim · model-written summary
Bioagents ranked intermediate and plant aqueous extracts least effective across seasons.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatments with bioagents (T. harzianum and A. mycorrhizae) were in the intermediate rank, whereas, treatments of plant aqueous extracts (O. majorana and T. erecta) were the least effective in both seasons.”
t0“grapevines”
The same questions in other papers
Simmondsia chinensis · yield · VitisPositive and negative results
1 in the opposite direction
- no effect
botanical · Meloidogyne incognita · VitisResults agree
1 paper in the same direction as this paper
- positive
botanical · quality: sugar starch · VitisResults agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.