Effects of Tylenchulus semipenetrans on Growth and Yield of Citrus Plants in Chhatrapati Sambhajinagar District, Maharashtra, India

Abstract

Tylenchulus semipenetrans (N.A. Cobb) is one of the most economically important plant-parasitic nematodes affecting citrus cultivation worldwide. The present investigation was conducted to determine the influence of citrus nematode infestation on growth and yield parameters of citrus orchards in Chhatrapati Sambhajinagar district, Maharashtra, India. Soil and root samples were collected from selected citrus orchards and nematode populations were assessed. Growth characteristics including plant height, canopy spread, leaf size, root development, fruit size, fruit weight and yield were compared between infected and healthy orchards. Results revealed that heavily infested orchards showed significantly reduced vegetative growth and productivity. Infected orchards exhibited chlorosis, stunted growth, poor root development, reduced fruit size and premature fruit drop. Statistical analysis indicated a strong negative correlation between nematode population density and fruit yield (r = -0.92). The study highlights the economic significance of T. semipenetrans and emphasizes the need for integrated nematode management strategies.