Abstract
The objectives of this experiment are to clarify the relation between the growth of volunteer wheat plants and the cultivation methods under an alternating cropping system between barley and wheat.
In the fields where left in fallow or planted with buckwheat during the summer following the wheat harvest using a head-feeding combine, a great number of volunteer wheat plants had grown in the barley fields. This was observed, also, in the fields where upland rice or peanut were planted in the inter-row spaces between the wheat rows. The fields which were left in fallow or planted with buckwheat during the summer following the wheat harvest using a conventional combine harvester showed few volunteer wheat. Almost no volunteer wheat plants grew in fields which were plow-tilled followed rotary-tilling and where left in fallow after flooding the fields during the summer.
As a result of pot test, flooding the wheat grain for 5-7 days was effective in controlling volunteer wheat plants.
