Competitive control of common lambsquarters chenopodium album in a corn zea mays cultivar pioneer 3382 soybean glycine max cultivar perry inter crop

Moss, P.A.; Hartwig, N.L.

Proceedings of the Northeastern Weed Science Society 34: 21-28


Accession: 005018568

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A competition study was conducted to investigate whether a corn-soybean intercrop would decrease a stand of common lambsquarters (Chenopodium album L.) to a greater extent than a corn monoculture. Three intercrop treatments were used in which different populations of corn were planted in the same row as soybeans. Weed dry weight in these plots was compared with corn monoculture plots and a weedy check. Plots were harvested 8 times during the season, and dry weights of corn, soybeans, lambsquarters and other weeds were obtained. One intercrop treatment consisting of 23,000 corn plants/acre with soybeans had only 61% of the weeds of the corn monoculture (24,000 corn plants/acre). This was significantly different at the 5% level. Nearly identical soybean dry weights were observed at high, medium and low corn populations. Weeds tended to fill in for a low corn stand instead of soybeans. Interplanting corn and soybeans in the same row can have a significant effect on lowering a stand of common lambsquarters.