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Let C’s present age be x years. So, A’s present age = (x + 5) years And B’s present age = (x + 5 + 2) = (x + 7) years According to question, => x + 5 + x = 25 => 2x = 20 => x = 10 Required total sum = x + (x + 5) + (x + 7) = 3x + 12 = 42 years
Which clay mineral group is known for its ability to swell and expand when wetted?
The EC of Sodic soil is __mmho/cm at 25 ℃ .
Which soils are known as self-tilled soils
Which method measures soil moisture content by drying a sample in an oven and determining the percentage of moisture loss?
According to USDA classification of salt affected soils; a soil having EC >4 mmho/cm; ESP >15; pH
What is the color of the tag used for certified seed?
The indicator plant for zinc deficiency is ____
The study of soil from the stand point of higher plants is known as……………………….
Sodic soils are also known as_____
The Soil moisture potential at permanent wilting point is____