Most rotations were tested under the four combinations of tillage (zero versus cultivated) and crop residue (retained versus harvested).
Under rainfed conditions (mean annual rainfall 603 mm, one crop per year), binary rotations (with phased entry) of wheat maize, wheat vetch and wheat medic pasture were compared with continuous wheat and maize; most rotations were tested under the four combinations of tillage (cultivated versus zero) and crop residue (retained versus harvested).
Important findings were that most medical schools have VMS programs, the most popular rotations are in internal medicine, demand outweighs available positions, and eligibility and evaluation standards are inconsistent within and between institutions.
In descending order, the most popular rotations were in internal medicine, orthopedic surgery, emergency medicine, and pediatrics.
In descending order, the most popular rotations were in general and subspecialty internal medicine, orthopedic surgery, emergency medicine, general and subspecialty pediatrics, and obstetrics and gynecology; other specialties were listed only occasionally.
Most of the other rotations are preceded by an introductory week where prior knowledge and skills are activated and conclude with a final week for reflection, reporting and assessment.
Most rotation curves are rising slowly even at the farthest measured point.
In our study most clinical GP/FM rotations were placed in years four, five or six, but as the length of the clinical teaching period increased, it is common to spread it over several semesters.
Rotations are being questioned.
In the US, in very large areas, crop rotation comprises only glyphosate-resistant crops, the most common rotation being HR soybean to HR corn [66].
