The article presents the data on potato agrocenoses affected by Alternaria blight under influence of various factors that have a stressful effect host plant and contribute to damage crop disease. It’s established nematodes increase susceptibility disease, promoting epiphytotic development at earlier stages ontogenesis. Under conditions natural infectious load pathogens weather disease was obser...

In the present paper we propose and evaluate a framework for detection and classification of plant leaf/stem diseases using image processing and neural network technique. The images of plant leaves affected by four types of diseases namely early blight, late blight, powdery-mildew and septoria has been considered for study and evaluation of feasibility of the proposed method. The color transfor...

CASE STUDY In July, 1978 a 30-lb box of packed tomatoes (variety 'Improved Walter') was sent from a receiver in Orlando to the posthar-vest Pathology Laboratory in Gainesville (Bartz, 1980). The fruit had been grown and packed in the Quincy region. Since the area was new to tomato production back then, ripening rooms had not yet been constructed. So, this box had not been gassed. The shipment h...

Kentang ialah salah satu tanaman yang potensial untuk dikembangkan. Produksi dan produktivitas kentang di Indonesia semakin menurun setiap tahunnya. Badan Pusat Statistik (BPS) mencatat produksi mengalami penurunan 9,82%, dari 1.176.304 ton pada tahun 2009 menjadi 1.060.805 2010. Kendala menurunnya disebabkan oleh serangan hama penyakit, sehingga memerlukan suatu sistem dapat membantu mendiagno...

Phytophthora infestans (Mont.) cause potato late blight disease and can infect of roots, tubers, shoots the plant. The majority significant factors in determining spread is cultivation infected tubers their presence as agricultural plant debris field. Mycelium, zoospores, Oospores, sporangia, all these structures make infection, also Oospores with thick wall survive for 3 to 4 years under low t...

Name: Citrus blight disease Taxonomic position: Unknown Common names: Young tree decline, sandhill decline, roadside decline, rough lemon decline (English) Declinamiento, marchitamiento repentino (Spanish) Declinio (Portuguese) Notes on taxonomy and nomenclature: Typical citrus blight is the disease known in Florida (USA). More or less similar diseases have been described from other parts of th...