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What should be the optimum temperature range for the growth of mesophilic bacteria? 

The optimum temperature for growth and head of cabbage is ________

Rice stem borers lay eggs on which one of the following parts of the plant?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. 

Scientific name of potato is:

Level of optimum production is available at

What is the term for the process of converting atmospheric nitrogen gas into a form that plants can absorb?

For the farmers, ………………………………. Soil structure is favourable for plant growth.

The groundwater table is measured by:

The gradual increase in the concentration of nutrients in an aging  aquatic ecosystem such  as  a lake is called ____