...under conditions permitting an accurate measure of the economic return they produce. [48 Stat. 61.] (c) To cooperate with National, State, district, or county experimental stations or demonstration farms, with farmers, landowners, and associations of farmers or landowners, for the use of new forms of fertilizer...

...cooperate with National, State, district, or county experimental stations or demonstration farms, lor the use of new forms of fertilizer or fertilizer practices...initial or experimental period of their introduction. (d) The board in order to improve and cheapen the production of fertilizer is authorized to manufacture...

...fertilizers under conditions permitting an accurate measure of the economic return they produce. (c) To cooperate with National, State, district, or county...initial or experimental period of their introduction. (d) The board in order to improve and cheapen the production of fertilizer is authorized to manufacture...

...fertilizers under conditions permitting an accurate measure of the economic return they produce. (c) To cooperate with National, State, district, or county experimental stations or demonstration farms, with farmers, landowners, and associations of farmers or landowners, for the use of new forms of fertilizer...

...duties, require bonds of them and fix the penalties thereof, and dismiss at pleasure any such ojficer, employee, attorney, or agent, and provide a system...county experimental stations or demonstration farms, jar the use of new forms of fertilizer or fertilizer practices during the initial or experimental period...

...sections of the act expressly provide for joint participation with State authorities. Section VC reads : "To cooperate with National, State, District, or County...farms * * * for the use of new forms of fertilizer practices." The Federal statutes setting up the United States Housing Authority, the TVA, and the Bankhead...

...fertilisers under conditions permitting an accurate measure of the economic return they produce. (c) To cooperate with national, State, district, or county...or demonstration farms, for the use of new forms of fertiliser or fertilizer practices during the initial or experimental period of their introduction....

...stations or demonstration farms, with farmers, landowners, and associations of farmers or landowners, for the use of new forms of fertilizer or fertilizer...initial or experimental period of their introduction, and for promoting the prevention of soil erosion by the use of fertilizers and otherwise. (d) The board...

...subdivision (c) of section 5 of said ActW, and the same is hereby, amended to read as follows: "(c)" To cooperate with National, State, district, or county experimental stations or demonstration farms, with farmers, landowners, and associations of farmers or landowners, for the use of new forms of fertilizer...

...subdivision (c) of section 5 of said Act be, and the same is hereby, amended to read as follows : "(c)" To cooperate with National, State, district, or county experimental stations or demonstration farms, with farmers, landowners, and associations of farmers or landowners, for the use of new forms of fertilizer...