"The soy-bean, in particular, has proved sufficiently resistant to cold in spring and to adverse weather during summer to warrant heavy planting, especially throughout the South"

This quote by David F. Houston is referring to the soybean plant and its ability to endure cold temperature levels in the spring and unfavorable weather condition throughout the summertime. He is recommending that the soybean is a reputable crop and should be greatly planted, particularly in the southern United States. This is likely due to the reality that the soybean is a hardy plant and can stand up to a variety of weather conditions. The soybean is likewise a flexible crop, as it can be used for a range of functions, such as animal feed, oil, and food products. Additionally, the soybean is a great source of protein and other essential nutrients. Therefore, it is a great crop to plant in the South, as it can provide a range of benefits to the local economy.