Agriculture sciences

Protecting grain from insect pests with natural substances

Whether in the field or in the silo, grain is susceptible to insect pests. Therefore, chemical insecticides are often used. A common insecticide used in grain storage is imidacloprid, which belongs to the group of neonicotinoids and is considered controversial because of its environmentally harmful effects. Researchers from the Senckenberg German Entomological Institute in Müncheberg, together with partners from Pakistan and Greece, have now found a sustainable alternative.

Clear advantage for organic farming

Organic agriculture stands for sustainable agriculture, species diversity and above all the consistent elimination of synthetic chemical pesticides. With a share of 7.5% of the total agricultural area, organic farming is still marginal in Germany. However, current data from the Federal Office for Agriculture and Food (BLE) show a clear trend towards the sustainable cultivation of fields and meadows.

Making use of the plant's defences

 

Last summer, heat and drought have afflicted farmers in many places and caused enormous harvest losses. The damage caused to farmers in Germany was estimated by the Federal Ministry of Food and Agriculture at 770 million euros.
Extreme weather conditions make plants more susceptible to disease and pest infestation. This also endangers wheat production in Germany and large parts of Europe.

Biodiversity under attack

New technologies such as field robots are already making agriculture more efficient and sustainable. New habitats for insects and other animals are being created with flower strips or mixed cultivation of crops. This contributes to the protection of biological diversity. But can all these measures halt the global loss of biodiversity? Apparently not.

Meta-analysis: higher yield, less diversity

According to the Federal Statistical Office, slightly more than half of Germany's acreage was used for agriculture in 2016. Farmers are using modern machinery and pesticides and fertilizers to increase yields. Studies confirm: More intensive farming is detrimental to the environment and above all threatens species diversity. But a meta-analysis now shows at what a cost for nature a bountiful harvest actually comes.