What Are Duty, Delta, and Base Period in Irrigation?

TL;DR

Duty refers to the area that can be irrigated with a unit volume of water. Delta is the depth of water needed at specific intervals during a crop's growth, while the base period is the time from the first to the last watering. Understanding these concepts helps in efficient water resource management for crops.

Transcript

hello everyone in this video we are going to discuss the few terminologies which are related to the growth of the those are duty delta and the base period of the crop so let's start now as we are aware that every crop requires certain amount of water for its complete growth so this water requirement of the crop it signifies the total quantity of th... Read More

Key Insights

• 💦 Water requirement signifies the total amount of water needed for crop growth during different stages.
• ⌛ Crop period is the time from sowing to harvesting, while base period is the time from the first watering to the last.
• 💦 Delta represents the depth of water required at fixed intervals during the crop's growth.
• 💦 Duty measures the area of land that can be irrigated with a unit volume of irrigation water.
• ⚾ Duty varies based on crop type and location.
• 🚾 Conveyance loss occurs when water is lost through evaporation and percolation in the canal system.
• 🚾 The availability of water increases as we move closer to the field from the canal head.

Questions & Answers

Q: What is the difference between the crop period and the base period?

The crop period is the time from sowing to harvesting, while the base period is the time from the first watering to the last watering.

Q: How is delta calculated for a crop?

Delta is the total amount of water required for the crop's growth. It can be calculated by summing up the depths of water required at fixed intervals throughout the growth period.

Q: What is duty in crop irrigation?

Duty refers to the area of land that can be irrigated with a specific volume of irrigation water. It indicates the efficiency of water usage in irrigation.

Q: How does duty vary in different crops?

Duty varies depending on the crop type and location. For example, sugarcane has a duty of 730 hectares per cubic meter, while rice has a duty of 775 hectares per cubic meter.

Summary & Key Takeaways

• Every crop requires a certain amount of water for its growth, which is known as the water requirement.

• The crop period is the time between sowing and harvesting, while the base period is the time between the first and last watering.

• Delta refers to the depth of water required at fixed intervals during the growth period of a crop.

• Duty is the area of land that can be irrigated with a unit volume of irrigation water.