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Accueil du site → Doctorat → Australie → 1998 → Crop and soil response to four direct drilling techniques under dryland farming techniques

University of South Australia Australie (1998)

Crop and soil response to four direct drilling techniques under dryland farming techniques

Asoodar, Mohammad Amin

Titre : Crop and soil response to four direct drilling techniques under dryland farming techniques

Auteur : Asoodar, Mohammad Amin

Université de soutenance : University of South Australia,

Grade : Doctor of Philosophy (Ph.D.) 1998.

Résumé
The purpose of this study was to investigate and understand the effect of four direct drilling techniques on soil properties (soil moisture, bulk density, surface roughness and penetration resistance) and crop response (seed placement, shoot and root growth and grain yield) in the South Australian context of dryland farming.The four sowing techniques were :• "NW" : A prototype 50 mm wide, narrow flat-wing point representing an inverted "T"point, with spring tine harrows as covering device.• "NWS" : A 50 mm wide, narrow inclined-wing point with an additional 50 mm slotting blade extending below the wings, also followed by spring tine harrows.• "NWSPW" : The same narrow inclined-wing slotting point followed with a banked type (80 mm wide) solid rubber press wheels.• "CONV" : A 180 mm wide conventional share followed by spring tine harrows.

Mots clés : Conservation tillage South Australia • Minimum tillage South Australia • Arid regions agriculture South Australia • Dry farming South Australia

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