For healthy potatoes - Bayer CropScience

For healthy potatoes - Bayer CropScience For healthy potatoes - Bayer CropScience

bayercropscience.bg
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07.02.2015 Views

The natural fauna, e.g. earthworms, must not be adversely affected by the use of crop protection products. Field margin strips encourage beneficial insects to establish themselves. One of the activities encouraged by ICM is to set up temporary, or long-term, protection areas for animals. Examples of the latter include turning areas, field margins, set-aside and edge strips that are intended specifically to provide a haven for beneficial insects, which can make a valuable contribution to pest control. It is estimated that temporary protection areas (3 to 8 meters in width) extend to some 2 million kilometers in Germany alone. Integrated Crop Management also recognizes the value of long-term protection areas such as hedges and wind-breaks; and it encourages the setting-up and retention of suitable habitats within agricultural landscapes. For example, linked biotopes and wildlife-corridors intersecting agricultural landscapes can help to provide continuity between these areas of protection. The beneficial insects that find shelter make an important contribution to agro-ecosystems, whether by pollinating crops or by predating on crop pests (biological control). Integrated Pest Management combines biological, mechanical, chemical and biotechnological methods. The use of biological control agents is becoming increasingly important around the world. In Germany for example, Trichogramma-parasitoids have been used for more than 25 years against the European corn borer. Thus it is important that chemical substances are carefully tested for their selectivity to the target pest(s) before finally being developed into a crop protection product. If a substance is compatible with beneficial insects, it has a greater chance of succeeding in the market – because products will therefore not preclude the parallel use of ladybirds, parasitic wasps or predatory mites. Even if a new active substance is not sufficiently selective, information is still gathered on the sensitivity of beneficial insects, and on the recovery time they need after an application in order to regenerate their populations. This information is then translated into guidelines for the use of the product. Targeted applications benefit the environment The use of precision application technologies is another way of ensuring the efficient and responsible use of crop protection products. One example is seed-treatment, where the product is applied to seed lots with great accuracy, resulting in a considerable reduction in the amount of product used on a given area of land. Seedtreatment or application to the furrow involves treating a total area of between 60 m 2 and 500 m 2 per hectare, rather than the entire area of 10,000 m 2 . In other words: products used for seed-treatment come into contact with less than one percent of the soil in the field receiving the treated seeds. These products act mainly against biting and sucking pests or against disease-causing pathogens that attack the seedling during early growth. Non-target organisms living on the plants are not exposed to the treatment at all. Tree-trunk application is another effective, reliable method for the targeted control of pests. It involves injecting a systemically-active insecticide into the trunk. The active substance is then transported within the sap, away from the point of injection, and into the leaves. In this way, leaf-eating 22 COURIER 2/06

pests are controlled, whilst their natural enemies remain unaffected. The use of diagnosis tools for monitoring pests and pathogen populations is a further important way of targeting treatment, allowing a limited – and localized – use of crop protection products. Avoiding resistance One of the most important aspects of the responsible use of crop protection products is the avoidance of resistance, which, if left to develop and spread, can allow the pest or pathogen to thrive even in treated crops. Resistance tends to develop wherever a high selection pressure is exerted on pests and pathogens through the frequent use of products from the same chemical class of activity. As compounds within the same class are often sold by different companies, resistance management has to be achieved through an industry cooperation. Thus three Resistance Action Committees – IRAC, FRAC and HRAC (I, F and H stand for insecticide, fungicide and herbicide, respectively) – operate under the umbrella of CropLife International. These committees have developed technical guidelines, among the recommendations of which is to rotate products within a crop spray programme. Resistance-development is a serious, but ultimately manageable, issue. It tends to occur most commonly in areas where a particular product is used too often, or even indiscriminately. Therefore, preventing resistance development protects biodiversity – in so far as an excessive use of crop protection products is avoided. The crop protection industry and farmers have learned their lessons: new approaches in research and development, combined with good management practices, now ensure that resistance is generally avoided, so that useful products can continue to serve their purpose over a prolonged period. Summary Although there aren’t any easy solutions to the problem of maintaining a balance between efficient agricultural production and the protection of biodiversity, much is being done to achieve this end. Recognition of our common responsibilities and the co-operation of all stakeholders are necessary if we are to preserve the natural resources that underlie both the integrity of ecosystems, and the well-being of mankind. Bayer CropScience is showing its commitment by taking measures during its research and development activities to ensure that biodiversity is preserved. We also co-operate in the development of locally-tailored technologies and services towards an integrated, responsible approach to the use of crop protection products. ■ Annik Dollacker, Bayer CropScience AG, Germany

The natural fauna, e.g. earthworms, must not be adversely affected by the use of crop protection products.<br />

Field margin strips encourage beneficial insects to<br />

establish themselves.<br />

One of the activities encouraged by<br />

ICM is to set up temporary, or long-term,<br />

protection areas for animals. Examples of<br />

the latter include turning areas, field<br />

margins, set-aside and edge strips that are<br />

intended specifically to provide a haven for<br />

beneficial insects, which can make a valuable<br />

contribution to pest control. It is estimated<br />

that temporary protection areas (3 to<br />

8 meters in width) extend to some 2 million<br />

kilometers in Germany alone. Integrated<br />

Crop Management also recognizes<br />

the value of long-term protection areas<br />

such as hedges and wind-breaks; and it<br />

encourages the setting-up and retention of<br />

suitable habitats within agricultural landscapes.<br />

<strong>For</strong> example, linked biotopes and<br />

wildlife-corridors intersecting agricultural<br />

landscapes can help to provide continuity<br />

between these areas of protection. The beneficial<br />

insects that find shelter make an<br />

important contribution to agro-ecosystems,<br />

whether by pollinating crops or<br />

by predating on crop pests (biological<br />

control).<br />

Integrated Pest Management combines<br />

biological, mechanical, chemical and biotechnological<br />

methods. The use of biological<br />

control agents is becoming increasingly<br />

important around the world. In Germany<br />

for example, Trichogramma-parasitoids<br />

have been used for more than 25 years<br />

against the European corn borer. Thus it is<br />

important that chemical substances are<br />

carefully tested for their selectivity to the<br />

target pest(s) before finally being developed<br />

into a crop protection product. If a<br />

substance is compatible with beneficial<br />

insects, it has a greater chance of succeeding<br />

in the market – because products will<br />

therefore not preclude the parallel use of<br />

ladybirds, parasitic wasps or predatory<br />

mites. Even if a new active substance is not<br />

sufficiently selective, information is still<br />

gathered on the sensitivity of beneficial<br />

insects, and on the recovery time they need<br />

after an application in order to regenerate<br />

their populations. This information is then<br />

translated into guidelines for the use of the<br />

product.<br />

Targeted applications benefit<br />

the environment<br />

The use of precision application technologies<br />

is another way of ensuring the efficient<br />

and responsible use of crop protection<br />

products. One example is seed-treatment,<br />

where the product is applied to seed<br />

lots with great accuracy, resulting in a considerable<br />

reduction in the amount of product<br />

used on a given area of land. Seedtreatment<br />

or application to the furrow<br />

involves treating a total area of between<br />

60 m 2 and 500 m 2 per hectare, rather than<br />

the entire area of 10,000 m 2 . In other<br />

words: products used for seed-treatment<br />

come into contact with less than one percent<br />

of the soil in the field receiving the<br />

treated seeds. These products act mainly<br />

against biting and sucking pests or against<br />

disease-causing pathogens that attack the<br />

seedling during early growth. Non-target<br />

organisms living on the plants are not<br />

exposed to the treatment at all.<br />

Tree-trunk application is another effective,<br />

reliable method for the targeted control<br />

of pests. It involves injecting a systemically-active<br />

insecticide into the trunk. The<br />

active substance is then transported within<br />

the sap, away from the point of injection,<br />

and into the leaves. In this way, leaf-eating<br />

22 COURIER 2/06

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