Effects of Aphids on The Growth of Different Varieties of Indian Mustard

The purpose of the experiment was to determine the prevalence of mustard aphids on various varieties of mustard in the field in Jassowala, Dehradun, Uttarakhand, from January to April of 2022. Three replications and a randomised complete block design were used to set up the experiment. The tolerant variations of eight mustard types, including T1 (RH7859), T2 (RH781), T3 (RH785), T4 (VARDHAN), T5 (RH7847), T6 (RH9006), T7 (RH8546), and T8 (VARUNA), were assessed against aphid infestation on plants, leaves, inflorescence, and pods. Regarding aphid infestation on plants, leaves, inflorescence, and pod, T8 (VARUNA) was shown to be the most favoured host out of the eight varieties of mustard, whereas T1 (RH7859), performed as the least preferred variety. T1 (RH7859), the variety most vulnerable to aphids, yielded the lowest seed yield per plot and T8 (VARUNA) seed yield with the least amount of aphid infestation. According to the study, the T8 (VARUNA) produced the maximum yield and showed the least amount of aphid infestation. On the other hand, T1 (RH7859), yielded the fewest seeds and displayed the most aphid infestation.