No abstract

No abstract

Studies on the relative occurrence of the leaf-gall midge (Procontarinia matteiana Kieffer and Cecconi) on different varieties of mango cultivated in south Gujarat were carried out in 1984 and 1985. A locational survey was made at 17 different places in various talukas of District Valsad, to determine the relative infestation of leaf-gall midge on Alphonso, Kesar and Rajapuri, the most commonly cultivated mango varieties in south Gujarat; the survey indicated that the order of these three varieties, based on the average percentage of leaves damaged by the pest, was Alphonso (47.70%), Kesar (27.21%) and Rajapuri (25.80%), with an average of 20.12,17.64 and 12.46 galls per leaf, respectively. Studies were also carried out to investigate varietal susceptibility to gall midge in 24 varieties cultivated at the Fruit' Research Station, Gujarat Agricultural University, Paria. The pest was observed to be parasitized by Chrysonotomyia pulcherrima (Kerrich); Synopeas mangiferae Austin and Inostemma oculare Austin.

No abstract

A research was carried out on cashew variety Vengurla-4 at farmer’s field in hilly area of the Dangs district, Gujarat, India during 2018 and 2019 to study the association between the incidence of apple and nut borer of cashew and abiotic factors. Regular weekly observations were recorded on the per cent damage of the pest. Apple and nut borer incidence was confined during January to May with maximum damage during April and was negatively influenced by evening and mean relative humidity as well as bright sunshine hours.