Question

if a soil sample 'X' has 20% Water Holding capacity. I have poured water from a measuring cylinder having 100 ml water on 50 g of soil sample 'Y' till it drips. Water left in the cylinder is 80 ml. i. Calculate percentage of water retained by soil sample 'Y'. ii. Which soil sample can be used to grow paddy?

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Answer 1

Explanation:

(i) Initial volume of water = 100 ml

(i) Initial volume of water = 100 mlFinal volume of water = 80 ml

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 g

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 gPercentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 gPercentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100= {(100-80)/50} X 100

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 gPercentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100= {(100-80)/50} X 100= {(20)/50) X 100

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 gPercentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100= {(100-80)/50} X 100= {(20)/50) X 100Percentage of water absorbed/retained by soil sample = 40 ml

(i) Initial volume of water = 100 mlFinal volume of water = 80 mlAmount of soil sample = 50 gPercentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100= {(100-80)/50} X 100= {(20)/50) X 100Percentage of water absorbed/retained by soil sample = 40 ml(ii) Clay or clay loams are most suited for rice/paddy cultivation. Such soils are capable of holding water for long and sustain crop.

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