Alternaria leaf blight (Alternaria spp.) – an emerging foliar fungal disease of winter-summer groundnut (Arachis hypogaea) : A review

Alternaria leaf blight of groundnut (Arachis hypogaea L.) is an economic important foliar fungal disease winter (rabi)-summer groundnut. It not only distributed in India, but also other growing countries like Nigeria, Vietnam and Thailand. Its severity increases whenever the crop facing any biotic abiotic stresses. This significantly affects pod haulm yield causing a reduction (13–22%), (24–63%) kernel quality. In cultivated groundnut, very limited sources moderate resistance are available to blight. Now efforts being made identify better stable germplasm interspecific derivatives. Although cultural, biological chemical control measures have been used for management these involve high costs time. Growing resistant cultivars most effective way protect crop. However, conventional breeding approaches successful developing varieties review has attempt consolidate research developments