Podcast
Questions and Answers
What is the primary source of potassium in the soil?
What is the primary source of potassium in the soil?
- Weathering of clay minerals (correct)
- Inorganic fertilizer
- Irrigation water
- Decomposition of manures and crop residues
Which of the following factors can influence the release of potassium from clay minerals?
Which of the following factors can influence the release of potassium from clay minerals?
- Soil pH
- Crop management
- Soil texture
- All of the above (correct)
What is the main reason that most soils in Hawaii have only small quantities of potassium-bearing clay minerals?
What is the main reason that most soils in Hawaii have only small quantities of potassium-bearing clay minerals?
- Lack of inorganic fertilizer application
- High rainfall and temperature (correct)
- Intensive farming practices
- Presence of organic matter
Which of the following is a significant source of potassium in Hawaii?
Which of the following is a significant source of potassium in Hawaii?
What is the main reason for potassium losses in harvested crops?
What is the main reason for potassium losses in harvested crops?
What is the process by which potassium can become less available to plants?
What is the process by which potassium can become less available to plants?
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