Zobrazeno 1 - 10
of 21
pro vyhledávání: '"R. Q. Cannell"'
Publikováno v:
Soil and Tillage Research
Soil and Tillage Research, Elsevier, 1984, 4 (4), pp.35-53
Soil and Tillage Research, Elsevier, 1984, 4 (4), pp.35-53
Soils from fifteen field experiments in the United Kingdom and one in France that compared direct drilling with mouldboard ploughing were examined with respect to their composition and physical properties. Indices of the stability and shrinkage of so
Publikováno v:
The Journal of Agricultural Science. 93:391-401
SUMMARYMouldboard ploughing, deep and shallow tined cultivation followed by conventional seed-bed preparation, and direct drilling were compared from 1972 to 1976 on a calcareous clay soil in two experiments, one on winter wheat and the other on spri
Autor:
R. J. Dowdell, R. Q. Cannell
Publikováno v:
Journal of Soil Science. 26:53-61
Summary The concentration of nitrate-N at 30 cm depth in a clay soil was 2–5 times greater (p
Autor:
R Q Cannell, D B Davies
Publikováno v:
Outlook on Agriculture. 8:216-220
In early experiments, before 1970, average yields of winter wheat and spring barley after direct drilling or shallow cultivation were less than after ploughing, but, in later experiments, there was little yield difference compared with ploughing. Dir
Publikováno v:
Annals of Applied Biology. 93:327-335
SUMMARY The effects of waterlogging the soil for up to 5 days on the growth of peas at different stages of development were investigated in glasshouse and outdoor experiments. During waterlogging the oxygen content of the soil declined to less than 2
Autor:
M. G. Jarvis, Michael J. Goss, G. L. Harris, K. R. Howse, J.T. Douglas, R. Q. Cannell, S. Le Grice
Publikováno v:
The Journal of Agricultural Science. 102:539-559
SummaryA replicated, long-term field drainage experiment on a clay soil was started in 1978 to investigate the effects of mole drainage on land that had been direct-drilled or ploughed. We here describe the background and the need for this work, deta
Autor:
R. Q. Cannell
Publikováno v:
Outlook on Agriculture. 13:130-135
The clearing of arable fields after harvest by burning the straw is an established agricultural practice. It has the advantage of being quick and cheap and of destroying a variety of pests. Today, however, it is widely regarded as an antisocial pract
Autor:
R Q Cannell
Publikováno v:
Outlook on Agriculture. 10:379-384
It is widely recognized that, in many crop situations, the use of herbicides instead of tillage confers advantages, not least of which is the control of erosion. On the other hand, simplified cultivation is not always reliable, and for a number of re
Publikováno v:
Plant and Soil. 80:67-78
Publikováno v:
Journal of Soil Science. 30:239-245
Summary The concentration of oxygen at three depths (15, 30 and 60 cm) has been measured in a direct-drilled or ploughed clay soil of low hydraulic conductivity (Evesnam series) which was cropped with winter wheat in three consecutive growing seasons