Influence of soil temperature and moisture on population dynamics of ectoparasitic nematodes infesting Mangifera indica.
Anita, Chaubey A. K.
Author Affiliation: Department of Zoology, C.C.S. University, Meerut - 250 004, India.
Annals of Plant Protection Sciences 11 : 181-183
Abstract : A study was conducted to evaluate the relationship between edaphic factors (soil temperature and soil moisture) and populations of nematode infesting mangoes. Soil samples were collected around the root zones of mango at three horizontal distances (30, 60 and 90 cm) and three vertical depths (0.0-20.0, 20.1-40.0 and 40.1-60.0 cm) in the semiarid zone at Meerut, Uttar Pradesh, India from September 2000 to September 2002. The dominant nematodes were identified as Hoplolaimus indicus [Basirolaimus indicus], Helicotylenchus indicus and Tylenchorhynchus brevilineatus. October was the most favourable time for high nematode populations. Significant positive correlation was observed between nematode population and soil moisture. Soil temperature was more effective in minimizing nematode population than soil moisture.