Spinosad Overview
Spinosad is derived through the fermentation of a naturally occurring organism. It uniquely combines the efficacy of synthetic products with the benefits of biological insect pest control products.
多杀菌素与多数化学合成农药相比有如下优点：
l 它来自发酵天然产物
l 低浓度高活性
l 具有触杀和胃杀两种功能
l 对天敌有益昆虫影响小
l 杀虫机制独特
Spinosad has several attractive features when compared to most synthetic insect pest control products:
· It is derived through the fermentation of a naturally occurring organism;
· It is highly active at low use rates;
· It is active by ingestion and contact exposure;
· It has less impact on certain predatory beneficial insects; and
· It is active by a mechanism unique among known insect pest control compounds.
多杀菌素与多数生物农药相比有如下优点：
l 持续的有效控制害虫
l 胃杀与触杀双重效果
l 杀虫速度快，控制明显
l 药效作用时间长
l 使用与处理莫有特别的限制
Spinosad has several attractive features when compared to most biological insect pest control products:
· It consistently demonstrates commercially acceptable control for labeled pests;
· It is effective by both contact and ingestion;
· It has quicker speed of control;
· It provides longer residual control in the field;
· It has no special handling or use restrictions.
Spinosad works by contact and by ingestion. Contact occurs either by direct application to the insect or by movement of the insect onto a treated surface. Ingestion occurs as insects feed on treated substrate (such as foliage). While control via contact is highly effective, control via ingestion is 5 - 10 times more effective.
Spinosad has a unique mode of action that is different from all other known insect control products. Spinosad causes excitation of the insect nervous system, leading to involuntary muscle contractions, prostration with tremors, and finally paralysis. These effects are consistent with the activation of nicotinic acetylcholine receptors by a mechanism that is clearly novel and unique among known insecticidal compounds. Spinosad also has effects on GABA receptor function that may contribute further to its insecticidal activity.
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