D.P.J. Opperman

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Active since

1975

Affiliations

University of the Free State(Current)

University of Pretoria

D.P.J. Opperman is an author at University of the Free State specializing in agriculture, soil-water relations, and agricultural production economics.

Publications per year

1975–1987

Publications

A mathematical model for assessing the influence of stocking rate on the incidence of droughts and for estimating the optimal stocking rates

H.J. Fouché, J. M. de Jager, D.P.J. Opperman · Journal of the Grassland Society of Southern Africa · 1985 · 29 citations

Agriculture, Agricultural Economics, Resource Economics +16

Ranking of grass species according to visible wilting order and rate of recovery in the central orange free state

H.A. Snyman, W.D. Venter, W.L.J. van Rensburg et al. · Journal of the Grassland Society of Southern Africa · 1987 · 24 citations

Agriculture, Botany, Plant Sciences +17

Evaluation of the grazing potential of grass species inTarchonanthusveld of the northern cape1

J.H. Fourie, D.P.J. Opperman, B. R. Roberts · Journal of the Grassland Society of Southern Africa · 1985 · 11 citations

Natural Resources, Ecology, Grazing Management +15

Evapotranspiration studies onthemeda triandraunder field conditions: A study in lysimeter methodology

D.P.J. Opperman, B. R. Roberts · Proceedings of the Annual Congresses of the Grassland Society of Southern Africa · 1975 · 10 citations

Agriculture, Agronomy, Plant Sciences +14

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