Neem oil can be used in pear orchards to protect against pests and plant diseases. Some diseases that neem oil can help prevent in pear orchards include powdery mildew, rust, and fruit scab.
• Powdery mildew is a fungal disease that appears on pear leaves, branches, and fruits. Neem oil acts as a fungicide and can help prevent powdery mildew. • Rust is another fungal disease that appears on pear leaves and branches. Neem oil can assist in preventing rust as it functions as a fungicide. • Fruit scab is a bacterial disease that can cause deformations and cracking of pear fruits. Neem oil isn't highly effective in preventing scab, but it can help alleviate symptoms. Neem oil also acts as an insecticide and can help prevent pests such as fruit flies and pear psyllids. In general, it's advisable to use neem oil preventively, before diseases or pests appear or in the early stages of infection. For this purpose, a solution of neem oil in a concentration of 0.5-1% can be applied, with a spacing of 7-14 days between applications. For more severe infections, a solution with a higher concentration can be used. Before using neem oil, it's important to study the manufacturer's instructions and follow the recommended dosage and application method. Applying neem oil preventively is crucial to prevent the development of diseases and pests, rather than after they have already appeared.
Varieties that have shown good acceptance of neem oil: Bartlett, Petrosianka, Lepotica Lipa.
Varieties with black spots: Abate.