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Original Articles

Physical effects of direct drilling equipment on undisturbed soils

V. Groove compaction and seedling root development

&
Pages 51-60 | Received 17 Dec 1980, Published online: 16 Jan 2012

References

  • Baker , C. J. 1969 . A tillage bin and tool testing apparatus for turf samples . Journal of agricultural engineering research , 14 : 357 – 360 .
  • Baker , C. J. 1976a . Experiments relating to techniques for direct drilling of seeds into untilled dead turf . Journal of agricultural engineering research , 21 : 133 – 144 .
  • Baker , C. J. 1976b . An investigation into the techniques of direct drilling seeds into undisturbed, sprayed pasture , New Zealand : Massey University . Unpublished Ph.D. Thesis
  • Baker , C. J. and Mai , T. V. 1982 . Physical effects of direct drilling equipment on undisturbed soils: IV. Techniques for measuring soil compaction in the vicinity of dolled grooves . New Zealand journal of agricultural research , 25 : 43 – 49 .
  • Choudhary , M. A. and Baker , C. J. 1980 . Physical effects of direct drilling equipment on undisturbed soils: I. Wheat seedling emergence from a dry soil under controlled climates . New Zealand journal of agricultural research , 23 : 489 – 496 .
  • Choudhary , M. A. and Baker , C. J. 1981a . Physical effects of direct drilling equipment on undisturbed soils: II. Seed groove fonnation by a “triple disc” coulter and seedling performance . New Zealand journal of agricultural research , 24 : 183 – 187 .
  • Choudhary , M. A. and Baker , C. J. 1981b . Physical effects of direct drilling equipment on undisturbed soils. III. Wheat seedling performance and in-groove micro-environment in a dry soil . New Zealand journal of agricultural research , 24 : 189 – 195 .
  • Dixon , H. N. 1972 . The effects of coulter design on soil compaction and root development of a cereal following direct drilling , New Zealand : Massey University . Unpublished Thesis
  • Flocker , W. J. and Menary , E. J. 1960 . Some physiological responses in two tomato varieties associated with levels of soil bulk density . Hilgardia , 30 : 101 – 121 .
  • Kar , S. and Varade , S. B. 1972 . Influence of mechanical impedance on rice seedling root growth . Agronomy journal , l64 : 80 – 81 .
  • Mai , T. V. 1979 . The effects of drill coulter designs on soil physical properties and plant responses in untilled seedbeds , New Zealand : Massey University . Unpublished Ph.D. Thesis
  • Phillips , R. E. and Kirkham , D. 1962 . Soil compaction in the field and corn growth . Agronomy journal , 54 : 29 – 34 .
  • Soane , B. D. , Butson , M. J. and Pidgeon , D. 1975 . Soil machine interactions in zero tillage for cereals and raspberries in Scotland . Outlook on agriculture , 8 : 221 – 221 .
  • Taylor , H. M. and Gardner , H. R. 1960 . Use of wax substrates in root penetration study . Soil Science Society of America proceedings , 24 : 97 – 81 .

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