Zobrazeno 1 - 10
of 13
pro vyhledávání: '"DW Puckridge"'
Autor:
DW Puckridge, I Papastylianou
Publikováno v:
Australian Journal of Agricultural Research. 32:713
The effect of cultural treatments and fertilizer nitrogen on nitrate nitrogen concentration of cereal steins and the relation between nitrate nitrogen and cereal production were examined in a three-year experiment. Five cultural treatments in the fir
Publikováno v:
Australian Journal of Agricultural Research. 32:703
The residual effects of one season of five cultural treatments common in southern Australian dryland farming were examined with respect to soil water and nitrogen, and the production of cereals in the next two years. The initial treatments were medic
Autor:
DW Puckridge, I Papastylianou
Publikováno v:
Australian Journal of Agricultural Research. 34:599
The growth of wheat on the permanent rotation experiment at the Waite Agricultural Research Institute was examined over two seasons. Measurements of stem nitrate nitrogen concentration were used to assess the effect of nitrogen on yield for treatment
Autor:
Soetono, DW Puckridge
Publikováno v:
Australian Journal of Agricultural Research. 33:171
The spatial relationships and growth of individual plants were studied in barley and wheat crops to determine the influence of size and distance of neighbouring plants on the development of individuals within the population. Plants were harvested ind
Autor:
DW Puckridge, AM Alston
Publikováno v:
Australian Journal of Agricultural Research. 37:263
Barrel medic (cv. Jemalong) was grown on a red-brown earth at Adelaide to examine dry matter production and nitrogenase activity in relation to environmental conditions and carbon dioxide exchange. At 4-10-day intervals, measurements were made of dry
Autor:
DW Puckridge
Publikováno v:
Soil Research. 16:229
A sensitive weighing lysimeter which can be constructed largely of common materials is described. The mechanical structure of the balance is similar to that of McIlroy, but it has a different sensing system. It is suitable for short or long term meas
Autor:
DA Ratkowsky, DW Puckridge
Publikováno v:
Australian Journal of Agricultural Research. 22:11
The photosynthesis of two cultivars of wheat at three densities of sowing was measured during the growing season of 1968. When the data were plotted as carbon dioxide uptake versus leaf area index (LAI) (leaf laminae and green stem) for a fixed value
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:
DW Puckridge
Publikováno v:
Australian Journal of Agricultural Research. 22:1
Photosynthesis of two wheat cultivars grown in the field was examined during three seasons by use of a portable field assimilation chamber. There were large differences in dry weight, leaf area, and carbon dioxide uptake between seasons. Variations i
Autor:
DW Puckridge
Publikováno v:
Australian Journal of Agricultural Research. 19:711
Four wheat varieties were examined to determine differences of grain production in response to ear shading and defoliation treatments under field conditions. Responses to both ear shading and defoliation were affected by the level of competition and