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Tillage and Management Alternatives for Returning Conservation Reserve Program Land to Crops

^a Haskell Agric. Lab., Univ. of Nebraska, 57905 866 Rd., Concord, NE 68728-2828
^b Virginia Tech, Tidewater Agric. Res. and Ext. Cent., 6321 Holland Rd., Suffolk, VA 23437
^c Northeast Res. and Ext. Cent., Univ. of Nebraska, 601 East Benjamin Avenue, Suite 104, Norfolk, NE 68701-0812
^d Northeast Community College, East Benjamin Ave., Norfolk, NE 68701
^e Dep. of Biometry, Univ. of Nebraska, Lincoln, NE 68583

View larger version (51K): [in a new window]   Fig. 1. Schematic of field layout by residue blocks for each experiment.

View larger version (53K): [in a new window]   Fig. 2. Average monthly rainfall from 1995 through 1997 and 25-yr average and average monthly temperature from 1994 through 1997 and 16-yr average, Haskell Agric. Lab., Concord, NE.

View larger version (52K): [in a new window]   Fig. 3. Effect of residue and tillage on plant population and emergence of corn, sorghum, and soybean for land coming out of Conservation Reserve Program (CRP). DK, disk treatment; NT, no-till treatment; and PL, plow treatment. Error bars indicate standard errors.

View larger version (19K): [in a new window]   Fig. 4. Soil water content response to no-till (NT) and plow (PL) tillage treatments for soybean following Conservation Reserve Program (CRP). Error bars indicate standard errors.

View larger version (22K): [in a new window]   Fig. 5. Soil temperature response to no-till (NT) and plow (PL) tillage treatments for soybean following Conservation Reserve Program (CRP). Error bars indicate standard errors.