Which act promotes agricultural research at land-grant colleges?

The correct choice is the Hatch Experimentation Act, which was enacted in 1887. This legislation specifically established a system of experiment stations in connection with the land-grant universities across the United States. These stations were designed to conduct agricultural research and disseminate findings to farmers and the agricultural community. The Hatch Act provided federal funding for research initiatives aimed at improving agricultural practices, crop yields, and farm management, fundamentally enhancing the scientific basis of farming.

The significance of the Hatch Experimentation Act cannot be overstated, as it laid the groundwork for extensive research programs that have led to innovations in agriculture over the years. The research conducted through these stations has been integral to addressing various agricultural challenges, enhancing food production, and ensuring food security.

In contrast to the Hatch Experimentation Act, other acts mentioned serve different purposes. For instance, the Smith Lever Act, passed in 1914, focuses on extending agricultural knowledge and education through cooperative extension services, while the Smith Hughes Act is aimed at vocational education in agriculture and home economics. The Gas Tractor Act, although relevant to agricultural machinery, does not pertain to agricultural research. Thus, the Hatch Experimentation Act is the pivotal piece of legislation for promoting agricultural research at land-grant colleges.