Zobrazeno 1 - 10
of 23
pro vyhledávání: '"CM Donald"'
Publikováno v:
Australian Journal of Agricultural Research. 31:455
A barley crop (cv. Clipper) was grown at three densities and in two plant arrangements, square-planted and drilled. Studies were made of the emergence and growth of individual plants within permanent quadrats. Later-emerging seedlings gave rise to sm
Autor:
DW Puckridge, CM Donald
Publikováno v:
Australian Journal of Agricultural Research. 18:193
An experiment was undertaken with wheat (cv. Insignia 49) to study the effects of interplant competition on dry matter and grain production. Crops ranging in density from 1.4 to 1078 plants per sq. metre were established, and light intensity and grow
Autor:
CM Donald, CH Williams
Publikováno v:
Australian Journal of Agricultural Research. 5:664
A survey was made of the influence of the use of superphosphate and subterranean clover (Trifolium subterraneum L.) on podzolic soils formed on granodiorite in the Crookwell district of New South Wales (average rainfall, 32.7 in. per annum). Forty-fo
Publikováno v:
Australian Journal of Agricultural Research. 24:11
The early vegetative growth of Houdeum Iepouinum and Lolium rigidum was studied at three temperatures in a controlled environment cabinet. The seedling growth rate in each species was much more rapid during the period of endosperm availability than a
Autor:
CM Donald
Publikováno v:
Australian Journal of Agricultural Research. 2:355
A series of experiments was conducted to examine the influence of density, stage of growth, and fertility level on intra-specific competition among annual pasture plants. At sowing there is a linear relationship between density and yield (weight of e
Publikováno v:
Australian Journal of Agricultural Research. 13:615
A study was made of the light regime and the growth of clover: (a) in mixed swards with varying proportions of grass; (b) in specially designed cultures in which grass and clover competed for light alone. The growth of the clover showed direct depend
Autor:
CM Donald
Publikováno v:
Australian Journal of Agricultural Research. 9:421
A new technique is described for the study of the interaction between competition for light and competition for a nutrient or for water. The technique was applied in a study of the competition between two grasses for light and for nitrogen. The aggre
Publikováno v:
Australian Journal of Agricultural Research. 10:199
Two field studies conducted in the Mediterranean type environment of Adelaide, South Australia, are described. The first experiment was designed to assess the effects of defective summer grazing by young sheep upon current and lifetime productivity,
Autor:
CM Donald
Publikováno v:
Australian Journal of Agricultural Research. 5:585
Inflorescence and seed production were studied in swards of varying 5 density of two annual Mediterranean pasture plants, Trifolium subterraneum L. and Lolium rigidum Gaud., each in pure culture. While the maximum level of dry matter production, achi
Publikováno v:
Australian Journal of Agricultural Research. 24:1
The germination and establishment of Hordeum lepovinum Link and Lolium rigidum Gaud., two Mediterranean annual grasses, were studied under controlled conditions. Results were related to the ecology of these species as pasture plants in southern Austr