Abstract
Foliar sprays of a nonswelling chlorite mica clay were applied to leaves of greenhouse-grown long English cucumber ( Cucumis sativus L.) plants, either before or after an artificial inoculation with powdery mildew [ Sphaerotheca fuliginea (Schlech.:Fr.) Poll.] and to field-grown wine grapes (Vitis vinifera L.) before natural inoculation with powdery mildew [ Uncinula necator (Schwein.) Burrill]. In all cases, the clay sprays did not eradicate the pathogen, but resulted in significant reductions in disease severity. In cucumber, a single spray of 0.5% clay reduced colony numbers on leaves by up to 60%. Spraying after inoculation was generally more effective than spraying before inoculation. In grapes, repeated sprays of either 2% or 4% clay were applied through the season to `Reisling' and `Chancellor' vines. Four percent clay reduced the amount of leaf surface covered by mildew by 22% in `Reisling' and 51% in `Chancellor'. Both concentrations reduced the incidence of mildew on clusters and canes. No treatment effects were observed on fruit quality. Our results demonstrate that foliar sprays of clay can reduce the severity of Sphaerotheca fuliginea and Uncinula necator on cucumbers and grapes, respectively.
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 6
Claim · model-written summary
In cucumber, a single 0.5% clay spray reduced powdery mildew colony numbers on leaves by up to 60%.
- Taxon
- Cucumis sativus
Cucumis sativuse1 - Treatment
- a single spray of 0.5% claye2
- Interactor
- Sphaerotheca fuliginea
Podosphaera fuligineae1pathogen - Outcome
- colony numbers on leavese2
- Direction
- reducede2
- Value
- 60%e2
- Setting
- greenhouse-growne1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Foliar sprays of a nonswelling chlorite mica clay were applied to leaves of greenhouse-grown long English cucumber ( Cucumis sativus L.) plants, either before or after an artificial inoculation with powdery mildew [ Sphaerotheca fuliginea (Schlech.:Fr.) Poll.]”
e2“In cucumber, a single spray of 0.5% clay reduced colony numbers on leaves by up to 60%”
Claim · model-written summary
In cucumber, spraying clay after inoculation was more effective than spraying before inoculation.
- Taxon
- Cucumis sativusCucumis sativuse1
- Treatment
- Spraying after inoculatione3
- Interactor
- Sphaerotheca fuligineaPodosphaera fuligineae1pathogen
- Outcome
- more effectivee3
- Direction
- more effectivee3
- Comparator
- spraying before inoculatione3
- Setting
- greenhouse-growne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Foliar sprays of a nonswelling chlorite mica clay were applied to leaves of greenhouse-grown long English cucumber ( Cucumis sativus L.) plants, either before or after an artificial inoculation with powdery mildew [ Sphaerotheca fuliginea (Schlech.:Fr.) Poll.]”
e3“Spraying after inoculation was generally more effective than spraying before inoculation”
Claim · model-written summary
Four percent clay reduced the leaf surface covered by mildew by 22% in Reisling grapevines.
- Taxon
- Vitis vinifera
Vitis viniferae4 - Material
- Reislinge5
- Treatment
- Four percent claye5
- Interactor
- Uncinula necator
Erysiphe necatore4pathogen - Outcome
- amount of leaf surface covered by mildewe5
- Direction
- reducede5
- Value
- 22%e5
- Setting
- field-growne4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“to field-grown wine grapes (Vitis vinifera L.) before natural inoculation with powdery mildew [ Uncinula necator (Schwein.) Burrill]”
e5“Four percent clay reduced the amount of leaf surface covered by mildew by 22% in `Reisling'”
Claim · model-written summary
Four percent clay reduced the leaf surface covered by mildew by 51% in Chancellor grapevines.
- Taxon
- Vitis viniferaVitis viniferae4
- Material
- Chancellore6
- Treatment
- Four percent claye6
- Interactor
- Uncinula necatorErysiphe necatore4pathogen
- Outcome
- amount of leaf surface covered by mildewe6
- Direction
- reducede6
- Value
- 51%e6
- Setting
- field-growne4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“to field-grown wine grapes (Vitis vinifera L.) before natural inoculation with powdery mildew [ Uncinula necator (Schwein.) Burrill]”
e6“Four percent clay reduced the amount of leaf surface covered by mildew by 22% in `Reisling' and 51% in `Chancellor'”
Claim · model-written summary
Repeated 2% or 4% clay sprays reduced the incidence of mildew on grape clusters and canes.
- Taxon
- Vitis viniferaVitis viniferae4
- Treatment
- 2% or 4% claye5
- Interactor
- Uncinula necatorErysiphe necatore4pathogen
- Outcome
- incidence of mildew on clusters and canese7
- Direction
- reducede7
- Setting
- field-growne4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“to field-grown wine grapes (Vitis vinifera L.) before natural inoculation with powdery mildew [ Uncinula necator (Schwein.) Burrill]”
e7“Both concentrations reduced the incidence of mildew on clusters and canes”
e5“repeated sprays of either 2% or 4% clay were applied through the season”
Claim · model-written summary
Repeated 2% or 4% clay sprays had no effect on grape fruit quality.
- Taxon
- Vitis viniferaVitis viniferae4
- Treatment
- 2% or 4% claye6
- Interactor
- Uncinula necatorErysiphe necatore4pathogen
- Outcome
- fruit qualitye7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“to field-grown wine grapes (Vitis vinifera L.) before natural inoculation with powdery mildew [ Uncinula necator (Schwein.) Burrill]”
e6“repeated sprays of either 2% or 4% clay were applied through the season”
e7“No treatment effects were observed on fruit quality”
The same questions in other papers
inoculation · Podosphaera fuliginea · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
application · Podosphaera fuliginea · Cucumis sativus (cucumber)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.