Reduced tillage systems: evaluation of the influence of tillage and fertilizer management on soil quality, crop productivity and economic sustainability

Results from the first two years of a four year field study conducted on two soil types to evaluate the effect of nitrogen source, timing and placement on canola and durum, under conventional and reduced tillage systems indicated that yield tended be higher under conventional tillage than zero tillage, and was influenced by source, timing and placement of fertilizer N.


24 May 2001


    This study was designed to evaluate the effect of nitrogen fertilizer source, placement and timing under reduced (ZT) and conventional tillage (CT) systems on:
    1) Seed yield and quality of durum wheat and canola;
    2) Nutrient accumulation and efficiency of fertilizer use;
    3) Soil quality, as indicated by bulk density, penetration resistance, soil pH, and nitrate accumulation in the profile;
    4) Weed density and distribution.