Abstract This study set out to compare the efficacy of all randomized complete block designs (RCBDs) to the VBD, as well as to examine the discrepancies between the general combining ability effect and the specific combining ability effect across a range of environmental designs. Six brinjal parents (GOB 1, JBGR 1, KS 331, AB 15-06, AB 17-17, and AB 17-28) were used to produce fifteen different crosses using the diallel technique IV. Late Kharif 2019 saw the crossing take place at the Main Vegetable Research Station, with late 2020 seeing the assessment of crosses at the Agronomy Farm. Fifteen hybrids were planted in two different types of environments (RCBD and VBD). Because of the small sample size, we only looked at four instances for RCBD.