Drum culture technique is used to determine WR of which of the following crop?
Drum culture technique is used to determine water requirement of lowland rice. In this method, four drum of size 50×50×50 cm are taken i.e. A, B, C and D. A and B have bottom while C and D are without bottom. All the drums are embedded in soil leaving 20 cm above soil surface. Rice is transplanted in drum A, C & D. and rice seedlings without roots are planted in drum B and the data on percolation, evaporation, ET, transpiration and effective rainfall is obtained.
In a classroom there are 13 boys and 11 girls. Average age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the b...
Present average age of 4 friends: ‘A’, ‘B’, ‘C’ and ‘D’ is 30 years. If their ages are in the arithmetic progression in the same order a...
Sum of the present ages of A, B, C and D is 72 years. After 3 years ratio of their ages is 5:4:3:2. What is C’s present age?
The average age of a group of 20 persons is found to be 27 years. Later it is found that age of two of the persons is calculated as 25 and 30 instead of...
The average age of the husband, wife, and their child 4 years ago was 24 years and that of the husband and the child 5 years ago was 19 years. The pres...
At present, Rahul and Rajat have ages in a 7:5 ratio. Anirudh age is 3 years less than Rahul and Sneha age is 5 years more than Rajat If the average cur...
The ratio of age of A and his son is 9:5. If the difference of their ages 6 year ago is 12, then find the sum of ages of A and his son 15 year hence?
The ratio of the present ages of P and Q is 6:5 respectively. If the age of P 12 years hence from now will be 125% more than the age of Q 4 years ago fr...
Present ages of P and Q are in the ratio 3:7 respectively. If Q’s age, 10 years hence from now will be 5 times of P’s age, 6 years ago from now, the...
Sushil’s present age is 1/2 times of her father’s age. After 13 years, father’s age will be 3 times the age of Sonu. If 3 years ago So...
