• Browse Quality Response to Forest Fertilization and Soils in Florida

      Wood, J. M.; Tanner, G. W. (Society for Range Management, 1985-09-01)
      Spring leaves of red maple (Acer rubrum) and inkberry (Ilex glabra) from slash pine (Pinus elliottii) plantations fertilized with diammonium phosphate 4 to 9 years prior to collection were higher in phosphorus (P) than leaves from an unfertilized plantation. The nitrogen (N) content of inkberry leaves also was higher in spring. During the summer, in vitro organic matter digestibility (IVOMD) was higher in both species and P was higher in inkberry on fertilized plantations. However, any residual effect of fertilization on nutrient concentrations was overshadowed by a decrease in P and N and an increase in calcium (Ca) in the summer. The effect of soil series on nutrient values was negligible, with the exception of Ca, which was higher on a somewhat poorly drained Dunbar soil series than on a poorly drained Bladen soil series. Nutritive value of both browse plants was limited by low IVOMD and P concentrations, which never attained maintenance levels required by white-tailed deer (Odocoileus virginianus).
    • N, P, And K Fertilization of Tall Fescue (Festuca arundinacea Schreb.) Overseeded Range in Eastern Oklahoma

      Mitchell, R. L.; Ewing, A. L.; McMurphy, W. E. (Society for Range Management, 1985-09-01)
      A native hay meadow in northeastern Oklahoma was overseeded with tall fescue (Festuca arundinacea Schreb.) and fertilized for 6 years with N in August and February to encourage tall fescue growth in late fall and early spring, thus extending the green forage season. The effect of P and K fertilizer on forage yield and plant nutrient concentration was determined. Cool-season N fertilization (112 kg/ha) nearly doubled tall fescue yield and increased forage nitrogen concentration without altering warm-season grass production. Additions of P (15, 29 kg/ha) and K (28, 112 kg/ha) increased cool-season forage yield marginally and increased fertilizer N recovery but had no desirable effect on forage N, P, and K content. Tall grass decreaser species were dominant at the end of the study. Available soil P increased with P fertilization and available soil K increased with K fertilization.