CHAP TRgval Ad. 
METHOD OF CULTIVATION (CONTINUED). 
Inequality of Developement of the Stem and Roots of the Annual 
Grasses during the early Period of Growth—This Peculiarity 
must be recognized in any Rational System of Planting and 
Culture—All Cultivated Plants divided into two Great Classes, 
according to their node of Development—Relations to Climate— 
The Oat Plant—Ahrend’s Experiments—In what Respects the 
growth of Sorghum is Analogous—The Characteristics of the 
Plant at different Periods of Growth exhibited—Physiology of 
the Leaf, Stem, and Root—Treatment which the Plant should 
receive at each Period. 
In the planting and culture I would recommend: 
1. Fall plowing, and deep and thorough tillage. 
2. Very early planting. 
3. Ridge planting as distinguished from planting in a 
furrow or drill on a flat surface. 
The above, together with other important but subordi- 
nate particulars, form a series of operations inseparably con- 
nected, the whole constituting a system of culture which 
derives its chief value from a close conformity to the real 
nature and requirements of this plant. Let us now see 
what these are. 
Annual plants as to their mode of developmert may be 
divided into two great classes, viz.: Ist. Those like the pea 
and the tomato, in which the growth of the stem and leaves 
is directly proportioned to that of the root during every 
stage of their existence. Like perennials, their develop- 
ment is equal throughont. 
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