Soil mechanics and emergence force of plants

Abstract

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The mechanics of soil cutting equipment and emergence of seedlings

“…They, however, did not develop any theoretical equation from the standpoint of soil dynamics from which the force or energy expended by the penetrometer could be predicted. Sheikh (1964) found to occur between the two values at higher bulk densities. Knight and Rula (1961) used a cone penetrometer to establish an index of soil trafficability.…”

The mechanics of soil cutting equipment and emergence of seedlings

“…They, however, did not develop any theoretical equation from the standpoint of soil dynamics from which the force or energy expended by the penetrometer could be predicted. Sheikh (1964) developed the mechanics of penetrating tools moving ver tically upward in soil. He developed an equation for the force exerted by a penetrating device deduced from the principles of mechanics.…”