“The injury caused by potato beetles is the defoliation of potato plants especially under warm and dry weather conditions. A single larva can destroy up to 40 to 50 cm’ of the leaf surface which corresponds to 1 % to 2 % of the leaf area of plants at the developmental stage appearance of blossom””. The yield loss due to one larva is approximately 0.6 %. The economic injury level is reached on average with five larvae per plant. Treatments with insect growth regulators or Bacillus thuringiensis are justified when 30 % of the plants ore attacked by young larvae (L] -L2). With other insecticides, the threshold value is reached at a defoliation rate of 10 to 20 %.”
Grass-based beef production is markedly less productive than intensive year-round indoor-housing system-based production. Agroscope experts therefore studied how grass-based farms can produce both economically and in an ecologically sound manner.
Orchard crop spraying using unmanned aerial spraying systems commonly referred to as drones can lead to drift, posing a risk to residents and bystanders. The study shows that the risks arising from this are taken into account by the current registration process.
Trials conducted by FiBL have shown that conversion to organic farming also promotes endangered Red List species such as the carabid beetle species Amara tricuspidata. This species and other species consume seeds of forbs and grasses and thus supports natural weed control.