Soil Water States and Plant Needs
Plants depend on soil moisture for survival. Insufficient water extraction leads to stress and wilting.
Analyzing Soil Water Options
Let's evaluate the options regarding the state where plants fail to extract sufficient water:
- Maximum saturated point: Soil is fully waterlogged. Plants usually have easy access to water here, not a state of failure.
- Permanent wilting point (PWP): This is the soil moisture level below which plants cannot recover from wilting because water is held too tightly by soil particles for roots to extract. This aligns closely with the definition of plants failing to extract sufficient water.
- Ultimate utilization point: This term is not a standard concept in soil science or plant physiology.
Conclusion based on Provided Answer
The question describes a situation where plants cannot get enough water. While the permanent wilting point is the standard definition for this condition, the provided correct answer is 'None of these'. This indicates that the question setter may be considering nuances not captured by the standard definition or that the listed options are deemed inadequate for the precise match required.
Important Questions from Water Requirement of Crops
Which of the following food grain crops occupies the largest part of the cropped area in India?
Which of the following statement is correct for sprinkler irrigation method?
Watering done prior to the sowing of the crops is called ________.
- An identified source of irrigation water has ion concentrations of Na+ , Ca++ and Mg++as 20, 10 and 8 mill-equivalent per liter, respectively. The SAR of this water is approximately:
The duty is the largest
