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Arkansas Animal Science Department Report 2001 nitrogen fertilization but there was no difference in the pounds of dry matter per acre due to nitrogen fertilization. The effects of nitrogen fertilization on the quality of wheat forage in pasture and masticate samples are given in Table 2. In pasture samples, CP increased (P < 0.01) as nitrogen fertilization increased. However, nitrogen fertilization did not affect OM, IVOMD, NDF or ADF in pasture samples nor did it affect OM, CP, IVOMD, NDF or ADF in masticate samples. The effects of time of year on the percent dry matter and pounds of dry matter per acre of wheat forage are given in Table 3. Percent dry matter and pounds of dry matter per acre increased (P < 0.01) from December 8, 1999 through March 28, 2000. This was due to the wheat becoming more mature. The effects of time of the year on the quality of wheat forage in pasture clippings and masticate samples are given in Table 4. Organic matter, NDF and ADF increased (P < 0.01) from December 8, 1999 through March 28, 2000, whereas CP and IVOMD decreased during the time period in pasture clippings. Organic matter in masticate samples of wheat forage increased (P < 0.01) from December 8, 1999 through March 28, 2000 but CP decreased (P < 0.01) during this time period. There were no differences due to time of year of masticate forage sample for IVOMD, ADF or NDF. Implications Nitrogen fertilization of soft red winter wheat forage increased CP and decreased DM concentration but had no effect on IVOMD, ADF or NDF. Time of year and associated maturity effects cause fiber concentrations of wheat forage to increase while CP and IVOMD decreased. These data provide a guide of the plant maturity effect on quality of the wheat forage. Literature Cited Collins, M., and J.A. Balasko. 1981. Agron. J. 73:321. Collins, M., et al. 1990. Agron. J. 82:724. Daniels, L.B., et al. 2000a. Ark. Agri. Expt. Sta. Res. Series. 470: 91. Daniels, L.B., et al. 2000b. Ark. Agri. Expt. Sta. Res. Series. 478:72. Saibro, J.E., et al. 1978. Agron. J. 70:497. 94
AAES Research Series 488 Table 1. The effects of nitrogen fertilization on percent dry matter and pounds of dry matter per acre of wheat forage. Nitrogen Level Variable 0 34 lb/acre 68 lb/acre P–value Percent dry matter 22.22 21.09 20.82
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Arkansas Animal Science Department
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spine copy ARKANSAS ANIMAL SCIENCE
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INTRODUCTION The faculty and staff
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COMMON ABBREVIATIONS Abbreviation T
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The Effects of Nitrogen Fertilizati
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Demographics and Academic Success o
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Efficacy of Mannan Oligosaccharide
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Effects of Dietary Magnesium and Ha
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Effect of Feather Meal on Live Anim
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Maternal Effects for Performance Te
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2000 Dairy Herd Improvement Herds i
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The Impact of Multiple Antimicrobia
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The Impact of Multiple Antimicrobia
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The Use of Hurdle Technology to Red
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Consumer Acceptability of Forage Fe
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