Abstract
ABSTRACT Root lesion nematodes limit the productivity of several crops of economic importance, requiring alternatives for their management. Resistance inducers activate enzymes involved in defense mechanisms and micronutrients can influence this process by acting as enzymatic cofactors. Thus, the objective of this study was to evaluate the effect of foliar application of a commercial organomineral fertilizer and its association or not with zinc (Zn) and manganese (Mn) micronutrients on the Pratylenchus brachyurus suppression and soybean plant development under greenhouse conditions. Shoots of soybean were treated 10 days after germination and inoculated with 5000 nematodes/plant five days after the treatments, using untreated plants as controls. Treatments consisted of a commercial product based on phosphorylated mannanoligosaccharide derived from the cell wall of Saccharomyces cerevisiae (here coded as MOS), Zn, Mn, MOS+Zn, MOS+Mn or MOS+Zn+Mn. At sixty days after establishment of treatments, the plants were collected and evaluated for vegetative analysis, nematological analysis and nutrient contents. The work was repeated at different times: experiment 1 from November 2016 to January 2017 and experiment 2 from October to November 2017. All treatments were efficient in controlling P. brachyurus in at least one of the evaluated nematological parameters, compared to the control. However, only the plant spraying with MOS+Zn results in significative reduction of the total number of nematodes and the number of P. brachyurus nematodes per gram of soybean root in both experiments. In addition, spraying of plants with Mn increased shoot dry weight and all treatments resulted in higher concentrations of copper, Zn and Mn in soybeans leaves compared to control.
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Claims 4
Claim · model-written summary
Spraying plants with MOS+Zn reduced the total number of nematodes and P. brachyurus per gram of soybean root in both experiments.
- Taxon
- soybean
Glycine maxe1 - Treatment
- MOS+Zne4
- Interactor
- P. brachyurusPratylenchus brachyuruse4pest
- Outcome
- total number of nematodese4
- Direction
- reductione4
- Qualifier
- in both experimentse4
- Comparator
- untreated plantse3
- Setting
- greenhouse conditionse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“on the Pratylenchus brachyurus suppression and soybean plant development under greenhouse conditions”
e3“using untreated plants as controls”
e4“However, only the plant spraying with MOS+Zn results in significative reduction of the total number of nematodes and the number of P. brachyurus nematodes per gram of soybean root in both experiments”
Claim · model-written summary
All MOS, Zn, Mn and combined treatments were efficient in controlling P. brachyurus in at least one nematological parameter compared with the control.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Zn, Mn, MOS+Zn, MOS+Mn or MOS+Zn+Mne2
- Interactor
- P. brachyurusPratylenchus brachyuruse5pest
- Outcome
- nematological parameterse5
- Direction
- efficiente5
- Qualifier
- in at least one of the evaluatede5
- Comparator
- controle5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“on the Pratylenchus brachyurus suppression and soybean plant development under greenhouse conditions”
e2“Treatments consisted of a commercial product based on phosphorylated mannanoligosaccharide derived from the cell wall of Saccharomyces cerevisiae (here coded as MOS), Zn, Mn, MOS+Zn, MOS+Mn or MOS+Zn+Mn”
e5“All treatments were efficient in controlling P. brachyurus in at least one of the evaluated nematological parameters, compared to the control”
Claim · model-written summary
Spraying plants with Mn increased shoot dry weight of soybean.
- Taxon
- soybeanGlycine maxe1
- Treatment
- spraying of plants with Mne6
- Outcome
- shoot dry weighte6
- Direction
- increasede6
- Comparator
- untreated plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“on the Pratylenchus brachyurus suppression and soybean plant development under greenhouse conditions”
e3“using untreated plants as controls”
e6“spraying of plants with Mn increased shoot dry weight”
Claim · model-written summary
All treatments resulted in higher concentrations of copper, Zn and Mn in soybean leaves compared with the control.
- Taxon
- soybeansGlycine maxe7
- Organ / stage
- leavese7
- Treatment
- all treatmentse7
- Outcome
- concentrations of copper, Zn and Mn in soybeans leavese7
- Direction
- highere7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“all treatments resulted in higher concentrations of copper, Zn and Mn in soybeans leaves compared to control”
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