the crop which was affected at the time of partition?
The yield of ANY crop is affected by weeds. While you can't always see the effects, the weeds are stealing crop nutrients and water from the crop.
The potato crop.
cash crop
as hole was small
Europeans were mainly by the crop tobacco. It grew well and was cheap and popular.
Productivity
Corn
a Clutch.
When plants, especially crop plants. are genetically engineered they are completely uniform in all characteristics. They have no genetic diversity. If the crop should be attacked by pests that it has no defense for, all will be affected and perhaps die, and the crop would be totally worthless.
The name for an interchange of crops is 'crop rotation.' It is used so that one crop can replace nutrients in a field that another has depleted.
No country has not been affected by the Columbian Exchange, whether directly, or indirectly (by crop diffusion then cultural diffusion inside the country). However possibly some communities have not been affected, but surely no country.
the name matariki comes from the Maori ancestors the night they harvested their crop when they saw the stars in the night sky the knew if the crop would flourish or not