SEC. 2. Section sixteen of the same Act is amended to read as follows:
"SEC. 16. When proper.—The Administration may initiate and prosecute expropriation proceedings for the acquisition of private agricultural land subject to the provisions of section six, paragraph (2), upon petition of a majority of the tenants or occupants thereof in case of abandoned land and after it is convinced of the suitability of such land for subdivision into family-size farm units, and that public interest will be served by its immediate acquisition, when any of the following conditions exists:
"(1) That the landowner falling within the terms of section six, paragraph (2), continues ,to refuse to sell after all efforts have been exhausted by the Administration to negotiate for its purchase; or
"(2) That the landowner is willing to sell under sections eleven and twelve but cannot agree with the Administration as to the price and/or the manner of its payment."