Interseeding forage brassicas into sweet corn: forage productivity and effect on sweet corn yield

S. J. Guldan¹, C. A. Martin¹ and D. L. Daniel²

Abstract
Relay intercropping can increase nutrient cycling, cropping system diversity, and profitability, all factors that can contribute to agricultural sustainability.

A frost-tolerant crop interseeded into sweet corn is an example of an opportunity for relay intercropping. Four forage brassicas ('Premier' kale, 'Sparta' rape, 'Rondo' turnip and 'Forage Star' turnip) were interseeded into 'NK 199' sweet corn at last cultivation ('early' interseeding) and at about blister stage of the corn ('late' interseeding) in 1993 and 1994. Our objectives were to determine the effect of interseeding on sweet com yield, and November dry-matter yields of brassicas. Corn ears and stover were harvested 2-3 Sept. 1993 and 12 Aug. 1994.

Corn yields were not significantly affected by interseeding. Rondo turnip yielded more top (herbage) dry-matter than either kale or Forage Star turnip averaged across years and planting times. Total forage yield of the turnips (tops + roots) was similar to or higher than top yield of kale or rape.


Source
Journal of Sustainable Agriculture (1998) 11: 51-58


Author Locations and Affiliations
(1) Alcalde Sustainable Agriculture Science Center, New Mexico State University, Alcade, NM
(2) University Statistics Center, New Mexico State University, Las Cruces, NM


Posted April 2010