Population dynamic of aphids in wintering oats (Avena sativa L.) in organic and conventional farming
Keywords:
oats, aphids, numerical dynamics, weeds, organic and conventional farmingAbstract
The experiment was carried out in a organical field and conventional field on the Institute of Agriculture – Karnobat in the period 2015/16 - 2017/18, using Kehlibar oat. The population dynamics of aphids in oats in both types of agriculture and the factors that influence them are studied During the study period in organic and conventional oat cultivation, aphids were mainly observed in the species Sitobion avenae L. The density of aphids is higher in conventional farming. The way oats are grown affects the content of crude protein in the grain, which correlates with the attack of aphids. The way oats are grown affects the number of wildflowering, which is in direct correlation with the parasitoids that regulate the density of aphids.
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