they are , but now they a trying to find crops that grow efficiently in poor fertile conditions
this is because of deforestation , that cause barren soil to become infertile as the nutrients go deeper in to the soil
I. C. Onwueme has written: 'Field crop production in tropical Africa' -- subject(s): Field crops, Tropical crops 'Tropical root and tuber crops' -- subject(s): Tropical crops, Tuber crops, Root crops
Biologist
The primary consumers of the cash crops of tropical countries are European countries. Most of these cash crops are exported to them.
plantation
Robert Joseph McIlroy has written: 'The plant glycosides' 'An introduction to tropical cash crops' -- subject(s): Cash crops, Tropical crops 'The chemistry of the polysaccharides'
William Noel Bates has written: 'Mechanization of tropical crops' -- subject(s): Agricultural machinery, Farm mechanization, Tropical crops
growing tropical crops
The seed drill is the invention that helped farmers plant crops. It help plant crops more quickly and efficiently.
J. D. Acland has written: 'East African crops' -- subject(s): Field crops, Tropical crops
Crops such as Cabbage Lettace Tomato and Wheat are all grown in the tropical savanna.
Answer this question…Seed drill
They are both in the tropical zone.