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Yield, Quality, and Persistence of Grazing- and Hay-Type Alfalfa under Three Harvest Frequencies

Department of Agronomy, Univ. of Missouri, Columbia, MO 65211

View larger version (31K): [in a new window]   Fig. 1. Yield at each harvest for alfalfa harvested four, five, or six times before 15 September for 5 yr in southern Missouri. Data are averaged over three cultivars. Bars indicate standard errors at individual harvests. Total annual yield and LSD values are presented in tabular format within each panel. Lines connecting harvest dates are included only to clarify treatments and do not indicate a linear response between harvest dates.

View larger version (49K): [in a new window]   Fig. 2. Monthly precipitation from January 1995 through December 1999 and the 39-yr monthly average precipitation at the Southwest Missouri Research Center near Mt. Vernon, MO.

View larger version (30K): [in a new window]   Fig. 3. Acid detergent fiber concentration at each harvest for alfalfa harvested four, five, or six times before 15 September in southern Missouri. Data are averaged over three cultivars. Bars indicate standard errors. Annual weighted averages and LSD values are presented in tabular format. Lines connecting harvest dates are included only to clarify treatments and do not indicate a linear response between harvest dates.

View larger version (31K): [in a new window]   Fig. 4. Neutral detergent fiber concentration at each harvest for alfalfa harvested four, five, or six times before 15 September in southern Missouri. Data are averaged over three cultivars. Bars indicate standard errors. Annual weighted averages and LSD values are presented in tabular format. Lines connecting harvest dates are included only to clarify treatments and do not indicate a linear response between harvest dates.

View larger version (29K): [in a new window]   Fig. 5. Crude protein concentration at each harvest for alfalfa harvested four, five, or six times before 15 September in southern Missouri. Data are averaged over three cultivars. Bars indicate standard errors. Annual weighted averages and LSD values are presented in tabular format. Lines connecting harvest dates are included only to clarify treatments and do not indicate a linear response between harvest dates.

View larger version (19K): [in a new window]   Fig. 6. Stand density of alfalfa harvested four, five, or six times before September 15 for 5 yr in southern Missouri. Data are averaged for three cultivars. Bars indicate standard errors.