what is the blackmans law of limiting factors ?
Law of Limiting factor was given by Blackman. This law governs the rate of photosynthesis. According to this law, the process of photosynthesis is controlled by many factors but the rate of photosynthesis will depend on the factor which is present in limited quantity.
For example, photosynthesis depends on carbon dioxide concentration, light intensity, water, presence of chlorophyll. If all factors are present but light intensity is low then light will become the limiting factor and rate of photosynthesis will depend only on light , the limiting factor.