Abstract
The southern red mite, Oligonychus ilicis (McGregor) (Acari: Tetranychidae) can cause a significant reduction in the photosynthesis potential and the growth of new coffee plants (Coffea spp., Rubiaceae). Studies suggest that the leaf spraying of silicon (Si) leads to increase plants resistance in order to reduce infestations of insect pests such as herbivores, borers, sucking insects and mites. The objective of this study was to evaluate the effect of leaf spraying of potassium silicate (K2SiO3) to control the southern red mite in coffee plants. Experiments were conducted in coffee plants (Coffea arabica L.), grown in a greenhouse, by means of completely randomized design with six treatments: Dose 0 (control), 2, 4, 6, 8 and 10 liters of silicate potassium ha-1 and five replications. Plants treated with potassium silicate, regardless of the applied dose, had a lower O. ilicis infestation compared to the control, not allowing the population increase, thus a smaller damage in coffee leaves. The silicon content in leaves was higher in plants treated with the highest dose of potassium silicate. It was observed that there was induction of defense molecules such as tannins and lignin in plants sprayed with potassium silicate. It was concluded that the potassium silicate applied in leaf spraying had positive effect on reducing O. ilicis attack in coffee plants, even being a dicot. Therefore, the applications of potassium silicate by leaf spraying can be used in programs of integrated management of the southern red mite in coffee, with a view to sustainable management and environmental protection.
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Claims 4
Claim · model-written summary
Potassium silicate leaf spraying reduced O. ilicis infestation in coffee plants compared with the control, regardless of dose.
- Treatment
- potassium silicatee1
- Interactor
- Oligonychus ilicis
Oligonychus ilicise0pest - Outcome
- O. ilicis infestatione1
- Direction
- lowere1
- Qualifier
- regardless of the applied dosee1
- Comparator
- controle1
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potassium Silicate Spraying in Coffee Plants”
e0“The southern red mite, Oligonychus ilicis (McGregor) (Acari: Tetranychidae)”
e1“Plants treated with potassium silicate, regardless of the applied dose, had a lower O. ilicis infestation compared to the control, not allowing the population increase, thus a smaller damage in coffee leaves”
Claim · model-written summary
Potassium silicate on the highest dose increased silicon content in coffee leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potassium Silicate Spraying in Coffee Plants”
e2“The silicon content in leaves was higher in plants treated with the highest dose of potassium silicate”
Claim · model-written summary
Potassium silicate spraying induced defense molecules such as tannins and lignin in coffee plants.
- Treatment
- potassium silicatee3
- Compound
- tannins and lignine3
- Outcome
- defense moleculese3
- Direction
- inductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potassium Silicate Spraying in Coffee Plants”
e3“It was observed that there was induction of defense molecules such as tannins and lignin in plants sprayed with potassium silicate”
Claim · model-written summary
Leaf-sprayed potassium silicate can be used in integrated management programs for the southern red mite in coffee.
- Treatment
- applications of potassium silicate by leaf sprayinge4
- Outcome
- integrated management of the southern red mitee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Therefore, the applications of potassium silicate by leaf spraying can be used in programs of integrated management of the southern red mite in coffee”
The same questions in other papers
silicate(4-) · nutrient: content · Coffea (coffee)Positive and negative results
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1 paper more in this group
See all 5 papers →potassium · nutrient: content · Coffea (coffee)Results agree
1 paper in the same direction as this paper
- positive
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.