Table 3: Grain yield (kg ha−1) of durum wheat as affected by tillage system, crop rotation, and P fertilization on at two sites over 3 years.

BRC NorthMZTRF
200120022003200120022003

Tillage
 Conventional179030862696328232212912
 Reduced188828353042323535662870
 LSD 71137 269 79139 101
Crop rotation
 wheat-flax-durum182328512888323433932933
 Canola-flax-durum185430702851328333942849
 LSD 70137269 79139 101
P fertilization
 0-0-25189429932927329133002900
 0-25-0173328012677329431312895
 25-0-25183929192860321735522869
 25-25-0183230432900314232842837
 50-0-25187129312939 326535462945
 50-25-0186530772911334335462901
 LSD 123237 466137 241 174

Analysis of variance
SourceDFPr ≥ F
Tillage10.00790.00050.0127n.s.<0.0001n.s.
Crop rotation1n.s.0.0022n.s.n.s.n.s.n.s.
P fertilization5n.s.n.s.n.s.n.s.0.0015n.s.