Q38: Weight of a soil sample with can is $210\text{ g}$... - Water Management - ICAR AIEEA PG 2024 - Agronomy | Agrigyan

Soil moisture content on a dry-weight basis is calculated using the formula: \[ \theta_w (\%) = \frac{\text{Weight of water}}{\text{Weight of oven-dry soil}} \times 100 \] Given data:

• Weight of wet soil + can = $210\text{ g}$
• Weight of dry soil + can = $180\text{ g}$
• Weight of empty can = $40\text{ g}$

Step 1: Calculate weight of water loss:

\[ \text{Weight of water} = 210\text{ g} - 180\text{ g} = 30\text{ g} \]

Step 2: Calculate weight of oven-dry soil:

\[ \text{Weight of dry soil} = 180\text{ g} - 40\text{ g} = 140\text{ g} \]

Step 3: Calculate moisture percentage:

\[ \theta_w = \frac{30}{140} \times 100 = 21.428\% \approx 21.4\% \]