Why do the Governments in some countries impose restrictions on the import of plants? What are the advantages of having these restrictions removed?
The Governments in some countries impose restrictions on the import of plants because:
a. It hinders the research work going on in the country for the development of new, improved varieties of plants.
b. The imported plants may not suit the climate and soil conditions of the country.
c. The imported plants may bring with them some new pests and crop diseases in the country.
If the restrictions on the import of plants are removed, then the agricultural scientists of the country can cross-breed local plants with imported plants and produce new, improved, high yielding varieties of plants which are more suited to the local climate and soil conditions. This will lead to a tremendous increase in the food production in the country.
Is having loose soil good for plants? What will happen if the soil is too loose?
Explain the various methods of weeding.
Describe the role of fertilisers in improving crop yield. Mention one adverse effect of excessive use of fertilizers.
Describe the role of irrigation in improving crop yield. Mention any one effect of it if it is used in excess.
