author(s)
JN Kotak, MF Acharya and KM Devananda

abstract
Experiment was undertaken during the year 2016-17 at Instructional Farm, Department of Agronomy, College of Agriculture, Junagadh Agricultural University, Junagadh to determine the population dynamics of leaf miner Liriomyza trifolii (Burgess) and whitefly Bemisia tabaci (Gennadius) on tomato. The results showed that leaf miner(Liriomyza trifolii) oriented mined leaves per plant damage peaked (7.20% /plant) during 4^th SMW (Standard Meteorological Week) while, it was lowest (0.42%) during 13^th SMW. Leaf miner oriented mines per five leaves per plant damage peaked (0.78% /five leaves/plant) during 4^th SMW while, it was lowest (0.14%) during 52^th SMW. Whitefly(Bemisia tabaci) population remained highest (7.67/three leaves) during 4^th SMW while, it remained lowest (0.47) during 13^th SMW. Relationship between leaf miner oriented mined leaves per plant and weather factors indicated significant negative correlation with temperature (maximum and minimum) (‘r’= -0.590* and -0.522*) and relative humidity (morning and evening) (‘r’= 0.264 and 0.511) indicated positive correlation (non-significant) with the pest abundance. Relationship between leaf miner oriented mines per five leaves per plant and temperature (maximum and minimum) (‘r’= -0.370 and -0.330) indicated non-significant negative correlation. However, relative humidity (morning and evening) (‘r’= 0.017 and 0.315) indicated positive correlation (non-significant) with the pest abundance. Abundance of whitefly population with relative humidity (morning and evening) (‘r’= 0.168 and 0.437) indicated non-significant positive correlation. While, temperature (maximum and minimum) (‘r’= -0.561* and -0.515*) indicated negative but significant correlation with the pest abundance.