Humus helps keep soil moist, can stop plant disease and reduce or eliminate pests.
Wednesday morning saw two sessions devoted to plant disease resistance genes, followed by social activities in the afternoon.
While in college, Borlaug heard a lecture by Elvin Stakman about plant disease in wheat, barley, and oak crops.
Garden pests and plant disease can often be prevented by careful planning and management, but sometimes despite your best efforts, you might lose crops.
The tea outlook was good, and the coffee industry was recovering from the effects of plant disease and Brazilian competition.
