The minimum and maximum temperatures for a crop on a given day are 13°C and 30°C, respectively. Calculate the Growing Degree Days (GDD) for the day if the base temperature for the crop is 5°C.
A. 2.0
B. 3.4
C. 16.5
D. 22
Answer: Option C
Solution(By Examveda Team)
Growing degree days are also known as growing degree units are a heuristic tool in phenology. It is a measure of heat accumulation to predict plant and animal development rates such as the date that a flower will bloom, or a crop will reach maturity.It is calculated by subtracting the plant’s lower base or threshold temperature of 50degree Fahrenheit from the average daily air temperature.
Here, $$\left[ {\frac{{\left( {13 + 30} \right)}}{2}} \right] - 5 = 16.5$$
Related Questions on Agronomy
Downy Mildew of Bajra caused by
A. C. fusiformis
B. S. graminicola (Sclerospora)
C. T. penicillica
D. All of the above
The criteria of essentiality of nutrients in plants was given by
A. D. J. Nicholas
B. Arnon and Stout
C. J. S. Kanwar
D. M. S. Swaminathan
A. Manganese
B. Boron
C. Zinc
D. Iron
Join The Discussion