Materials and equipment for the control of incipient or emergency outbreaks of insects, pests, or grass diseases, including grasshoppers, Mormon crickets, and chinch bugs, may be procured with any sums appropriated to carry out the provisions of sections
148 to
148e of title
7 without regard to the provisions of section
5 of this title, and the transportation thereof may be under such conditions and means as shall be determined by the Secretary of Agriculture to be most advantageous.