Question 1
Which of the following sources of potassium can be recommended for tobacco farming?
◦ potassium magnesium sulfate
◦ potassium nitrate
◦ potassium chloride
◦ potassium sulfate
Question 2
Which of the following types of soils generally has the lowest potassium content?
◦ tropical soils
◦ moderately weathered soils
◦ saline soils
◦ sodic soils