The studies on the population dynamics of Aphis craccivora (Koch) were conducted during 2008-2011. This pest is a serious pest in the agricultural fields of Vadodara, India. The results showed that the aphid population was higher in the month of September to January on bean crop. The maximum population of Aphis craccivora (Koch) was seen in the month of January to March. The correlation of the aphid population was done with abiotic and biotic factors. The aphid population was showing positive correlation with high temperature and the population of predators and other associated insect was showing negative correlation with minimum temperature, relative humidity and rainfall. Hence the information contained in this paper lead to the identification of the proper integrated pest management (IPM) practises for Aphis craccivora (Koch) management.

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A field experiment was carried out to study the effect of different sowing pattern and seed rate on growth and yield of wheat (Triticum aestivum) during rabi season of 2015-16 at experimental farm of CSKHPKV, Palampur, Himachal Pradesh. The experiment with twelve treatment combinations comprising of four planting patterns (15 cm, 23 cm, 15 x 15 cm and 23 x 23 cm) and three seed rates (100, 120 and 140 kg/ha) was conducted in Randomized Block Design with four replications. The analysis of data showed that , 23 x 23 cm planting patterns significantly increased plant height (2.63 %), leaf area index (13.21%), number of spikes/m2 (6.80%), spike length (6.31%), number of spikelets per spike (4.5%), number of grains per spike (5.57%), biological yield (7.34%), seed yield (9.86%), and seed recovery percentage (5.13%) over normal sowing (23cm). The number of shoots/m2 after full emergence, days to 50% heading, or harvest index did not significantly differ with planting pattern. 140 kg/ha seed rate produced significantly higher number of shoots per m² (17.86%), leaf area index (11.76%), number of spikes per m² (1.53%), biological (3.94%) and seed yield (7.75%) over 100 kg/ha seed rate.