Current vegetable production faces the challenge of productivity with growing demand for environmentally sustainable crop management practices. Biostimulants present a promising and sustainable strategy for mitigating the adverse effects of unpredictable weather patterns on vegetable crops, thereby enhancing resilience to heat stress, water deficits, and various biotic and abiotic stresses. While biostimulants have shown promising effects in various agricultural applications, there is limited literature on biostimulants and their role in regulating plant growth and development under conventional open field production systems. Additionally, there remains a research gap concerning the optimal application methods and rates of various biostimulants across different vegetable crops. Hence, this study analyzed the effectiveness of two different biostimulants seaweed extract and humic acid on mustard greens (Brassica juncea) performance using conventional farming methods in open field conditions. The biostimulants were applied through both soil and foliar application at two different rates to evaluate their effects on the growth, yield, and nutritional quality of mustard greens. Data was collected on various parameters, including the number of leaves per week, fresh and dry weight at harvest, nutrient content including chlorophylls, carotenoids, and mineral nutrient composition. Yield and nutrient compositions were improved by the application of seaweed at high concentration. In conclusion, seaweed application can be beneficial to improve mustard greens production in open field conditions.
