New hardy varieties of rice show promise of producing high yields without the costly requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties. Select one of the following answer choices A requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties B requirements by earlier high-yielding varieties of application of commercial fertilizer and irrigation C requirements for application of commercial fertilizer and irrigation of earlier high-yielding varieties D application of commercial fertilizer and irrigation that was required by earlier high-yielding varieties E irrigation and application of commercial fertilizer that were required by earlier high-yielding varieties Submit Log in or register to post comments