Impact of natural products on Acyrthosiphon pisum density on Pisum sativum L. and forage quality

A field trial was conducted at the Institute of Forage Crops (Pleven, Bulgaria) from 2015 to 2017. It studied effects natural products on Acyrthosiphon pisum density, as well changes in chemical composition, content plant fibre components and enzyme degradability forage pea. Treatments with insecticides Madex Agricolle, applied alone or combination organic fertilizers Lithovit Nagro were performed twice - beginning flowering stage one week later. The used are environmentally safe approved for use production. synthetic Kristalon, a foliar fertilizer, Proteus 110 OD, an insecticide, comparison. application products, either combination, resulted reduction pea aphid density. Applying Agricolle Nagro, followed by led highest number decrease (70.0 51.1%, respectively). An optimal cell wall components, cellulose lignification degree significant increase vitro digestibility established after applying Agricole Nagro. Digestibility reached 71.8 69.8%, respectively, 8.2-5.2%, while ADF, decreased 7.1 7.7%, 8.0 23.4%, amd 10.5 6.8% respectively. In comparison, Kristalon increased quality, but relatively lesser extent. stronger linear relationship found between density dry matter digestibility, compared neutral detergent fibres. Pea low degree, high protein content, treatment product its combinations make it very good complement other forages dairy cow rations.