The diagram below illustrates a tool used to analyse a soil sample in an experiment. Use it to answer this question.

The aim of the experiment is to determine the soil

The diagram above illustrates a tool used to analyse a soil sample in an experiment. Use it to answer this question.
The part labelled Ill will contain

The diagram above illustrates a tool used to analyze a soil sample in an experiment. Use it to answer this qu

The diameter of the soil particle that would be retained in the part labelled II is

Potassium deficiency in cereal crops Is indicated by

Nitrogen is important in plants because it is mainly needed in