期刊
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
卷 59, 期 9, 页码 1279-1288出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/03650340.2012.704547
关键词
allelopathy; competition; cropping system; grain yield; weed management
Intercropping is a viable option for weed management. Six maize-sorghum intercropping systems were compared in a two-year field study for the management of purple nutsedge. The intercropping systems included maize planting in 70-cm spaced rows intercropped with one row of dwarf or tall sorghum and maize in 105-cm spaced double-row strips intercropped with one or two rows of dwarf or tall sorghum; sole maize planted in 70-cm spaced single rows was used as a control. Two intercropping systems as maize in 70-cm spaced rows+one row of tall sorghum and maize in 105-cm spaced double-row strips+two rows of tall sorghum controlled purple nutsedge by 48 and 52% compared with the sole crop of maize, respectively. However, all the maize-sorghum intercropping systems decreased the maize grain yield compared with control. Maize planted in 105-cm spaced double-row strips+one row of dwarf sorghum was the best option because it reduced the maize yield by only 6%. However, the decrease in maize yield was compensated for by sorghum yield. Intercropping maize in 105-cm spaced double-row strips+one row of dwarf sorghum may be used for management of purple nutsedge in maize.
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