Correlation studies on insect pest and disease management in mango (Mangifera indica) cultivars

A field experiment was conducted at Fruit Research Station, Kuthulia, College of Agriculture, Rewa (Madhya Pradesh) during December-June 2011–12. Climatic factor, viz. temperature, humidity, winds and sunshine affect the growth, flowering, fruiting and quality of mango (Mangifera indica L.) fruits. The fruit yield was positively correlated with plant height, canopy height, spread (N-S and E-W), average fruit weight and other quality parameter. Mature fruits were positively and significantly correlated with number of fruits/tree and weight of fruit/tree. However, it was negatively correlated with fruit drop. The maximum incidence of malformation, mangohopper and leaffolder was observed in Langra. The remaining varieties showed lesser infection than other varieties. The variation in incidence of malformation amongst varieties may probably be related to genetic characters of variety. The variation in incidence of mangohopper and leaffolder may be related the temperature, humidity, wind and sunshine. Maximum incidence of mangohopper was noted in March in Langra. It is really interesting to note that Dashehari gave higher yield than other variety may be due to "off-year" season in last year and they reserves the carbohydrate synthesis that increase higher yield. The maximum number of fruits and weight were recorded in Dashehari (328.38) and (87.01kg). Dashehari, Mallika and Totapari gave significant higher fruit weight as compared to Sundarja and Langra.