Double cropping

P. A. Harris, H. H. Schomberg, P. A. Banks, and J. Giddens, Burning, tillage and herbicide effects on the soil microflora in a wheat-soybean double-crop system. Soil Biology and Biochemistry 27 153 (1995). 

Crop rotations are important in rice, especially where weedy/red rice is problematic and difficult to control during rice cropping seasons. In order to suppress weedy rice, nearly all rice in Louisiana is grown either in a 1 1 rotation with soybean or a 1 1 1 rotation where crawfish (Procambarus clarkia) are double-cropped following rice, with soybean produced the following season [34]. In 2012, greater than 70% of Arkansas rice was produced in rotation with soybean, with most of the remaining production in a rice-rice rotation [39]. In California, approximately 70% of rice is produced in a rice-fallow or rice-rice rotation [40],... 

Gilreath JP, Motis TN, Santos BM, Noling JW, Locascio SJ, Chellemi DO (2005) Resurgence of soilbome pests in double-cropped cucumber after application of methyl bromide chemical alternatives and solarization in tomato. Hort Technology 15 797-801 Gokte N, Mathur VK (1995) Eradication of root-knot nematodes from grapevine rootstocks by thermal therapy. Nematologica 41 269-271... 

Oik DC, Bmnetti G, Senesi N. 1999. Organic matter in double-cropped lowland rice soils Chemical and spectroscopic properties. Soil Science 164 633-649. 

China continues to be a major producer of soybeans. The production of soybeans remains about the same since 2002/03 (Table 2.1). The provinces of Heilongjiang, Liaoning, and Inner Mongolia produce about 45% of the total in China (Wilcox, 2004). Most of the soybeans in these areas are seeded in the spring. About 30% of the production is double-cropped behind wheat, especially in Henan, Shandong, Hebei,... 

Soybeans are grown as a single crop or as a double crop planted after harvest of a previous crop or even as an intercrop in some situations (Johnson, 1987 Heatherly Elmore, 2004). Adjustments of cultivars, planting dates, row spacing, and plant characteristics may be needed for different situations. 

Ren, Q. T.W. Pfeiffer S.A. Ghabrial. Soybean mosaic virus resistance improves productivity of double-cropped soybean. Crop Sci. 1997a, 37, 1712-1718. 

In all double-cropping areas the replacement of green manure by a winter grain or oil crop will double, or nearly double, that land s carrying capacity, while inorganic fertilizers supply the necessary nitrogen and other nutrients. 

---