Impact of preceding crops and primary soil tillage practices on the spreading and incident severity of downy mildew in sunflower

Abstract

The technical efficacy of the chemical crop protection system against downy mildew in sunflower reached 79.9% for the NK Neoma hybrid, and 75.8% and 83.7% for the NK Kondi and P64LE24 hybrids, respectively. The application of the biological protection system ensured a technical efficacy of 71.2% in NK Neoma crops, and 69.7% and 71.5% in NK Kondi and P64LE24 hybrids, respectively.