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By G. Aflakpui

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The bulk of all cleared fields were devoted to production of tobacco or “King Cotton” as it would become known. From 1800 to 1830 cotton went from making up 7% ($5 million) of exports from the United States to 41% ($30 million) (West, 2004). 8 million kg prior to the Civil War (Jacobstein, 1907). Crop rotation was not even considered an option with respect to these crops due to the cash value paid for them. By 1835 the top soil of eastern Georgia had eroded away with the remaining clay unsuitable for cotton production.

Characteristics of the transmissibility of an individual to other generations are not only linked to genes, the cell should be considered with its cytoplasm, mitochondria and genetic material carried in its structure, as well as the organism as a whole, and the complexity of the environment (Pearson, 2006). Another factor to be considered is the cytosine methylation of the genetic material, also responsible for gene silencing, causing changes in the phenotype, and according to most recent works can be passed to subsequent generations, thus causing greate genetic diversity among individuals of the same specie.

Both rice and soybean were relegated to the heavier clay soils of the Mississippi Delta with the sandy loams, silts, and silty clays remaining in cotton. It wasn’t 31 Concepts in Crop Rotations until changes in government support programs in the mid-1990’s that planters in the Mid South became interested in alternatives to continuous cotton and began to produce corn for commercial sale and rotate it with cotton. Corn hectareage in the states of Arkansas, Louisiana, and Mississippi increased from 161,000 ha in 1990, to 382,000 ha in 2000, to 630,000 ha in 2010 (USDA-NASS, 2011).

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