Small bin trials to determine the effectiveness of acid-activated kaolin against four species of beetles infesting paddy under tropical storage conditions

Permual, Dindyal; Patourel, G. le

doi:10.1016/0022-474x(92)90041-n

Cited by 10 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These dusts comprise a range of diVerent minerals, diatomaceous earth (DE) products and synthetic silica products (Ebeling 1971;Subramanyam and Roesli 2000). Storage pests in particular have been treated with this type of agent, but a whole range of arthropod species have been targeted (Mewis and Ulrichs 2001;Faulde et al 2006).…”

Section: Introductionmentioning

confidence: 99%

“…As the air humidity levels in poultry production facilities are often high this may hamper the eYcacy of the inert dusts. Inert dusts mainly act as dessicants by absorbing the lipids of the cuticle surface (Ebeling 1971) leading to death of the arthropod as a result of water loss, so high humidity in general is less conducive to the action of inert dusts (Subramanyam and Roesli 2000;Nielsen 1998).…”

Section: Introductionmentioning

confidence: 99%

“…Perhaps more likely was that the compounds caused additional mortality to that caused by the fungus. According to Ebeling (1995), kaolin is worthless as a desiccant dust unless its pores are enlarged by acid-and heat-activation, and such derivates have been successfully applied against stored product pests (Permual and Le Patourel 1992). However, unmodiWed clays and other minerals have often been used as grain protectants against arthropod damage (Subramanyam and Roesli 2000).…”

mentioning

confidence: 99%

“…According to Ebeling (1995), kaolin is worthless as a desiccant dust unless its pores are enlarged by acid-and heat-activation, and such derivates have been successfully applied against stored product pests (Permual and Le Patourel 1992). However, unmodiWed clays and other minerals have often been used as grain protectants against arthropod damage (Subramanyam and Roesli 2000). This suggests that dusts other than those containing high proportions of silicon dioxides may have pesticidal eVects, although these are likely to be much reduced compared to synthetic silicon dioxides.…”

mentioning

confidence: 99%

“…The general rule concerning the eYcacy of the diVerent groups of inert dusts was as follows (least-most eYcacious): clay and other minerals < pure DE's < modiWed DE's < pure synthetic amorphous silicas. This hierarchy is based mainly on the oil absorption capacity of these dust-based products which is dependent on their particle size distribution (Subramanyam and Roesli 2000). ProtectIt is SilicoSec ID a DE modiWed by the addition of a silica aerogel.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Inert dusts and their effects on the poultry red mite (Dermanyssus gallinae)

Kilpinen

Steenberg

2009

Exp Appl Acarol

View full text Add to dashboard Cite

The haematophagous poultry red mite (Dermanyssus gallinae) is the most important pest of egg laying hens in many parts of the world. Control has often relied on chemical pesticides, but inert dusts, which are thought to kill target hosts primarily by desiccation, have become one of the most commonly applied alternative control methods for poultry red mite in Europe. This development has occurred despite a lack of knowledge of the efficacy of the different types of inert dusts and how this is affected by environmental parameters, e.g. the high relative humidity found in poultry houses. In this laboratory study the efficacy of different commercial inert dust products against D. gallinae is compared. All tested compounds killed mites, but there was a clear ranking of efficacy (measured as weight loss after 24 h and as time until 50% mortality), particularly at 75% relative humidity (RH). At 85% RH the efficacy was significantly lower for all tested compounds (P < 0.001). Weight changes over time followed an exponential evaporation model until the mites started dying whereafter the rate of evaporation increased again and followed a slightly different exponential evaporation model. A tarsal test showed that 24 h exposure to surfaces treated with doses much lower than those recommended by the producers is sufficient to kill mites as fast as when they were dusted with massive doses. These data emphasise the need for thorough treatment of all surfaces in a poultry house in order to combat D. gallinae.

show abstract