摘要：Constant research efforts have been undertaken to create and adopt soybean varieties and farming practices that would lead to more drought-tolerant crops. Given that drought-tolerant crops are more stable in terms of price and supply, private genetic companies invest in those genetic materials with the biggest market opportunities. This begs the question: has there been any indication of improvements in drought-tolerance of crops? In this study, we focus on analyzing three soybean distinct relative maturity zones in the state of Missouri and determine if and in what direction is the drought tolerance of these crops changing over time.
