Why is it important to preserve farmland?

Why is it important to preserve farmland?

Farmland provides food and cover for wildlife, helps control flooding, protects wetlands and watersheds and maintains air quality. In addition, new energy crops grown on farmland have the potential to replace fossil fuels.

What is the national farmland protection program?

The Farmland Protection Program (formerly the Farm and Ranchland Protection Program) is a voluntary program that helps farmers and ranchers keep their land in agriculture and prevents conversion of agricultural land to non-agricultural uses.

What is the impact of waterlogging?

Waterlogging constraints plant growth and production in the anaerobic conditions, leading to the death of certain crops and plants. Also, plant roots fail to respire as a result of the excess water in the soil profile, making them weak and either die or fall.

What are the causes of waterlogging?

Waterlogging is caused by a combination of excess rainfall (for the site), poor external drain- age (runoff), poor internal drainage (water movement in the soil profile) and the inability of the soil to store much water.

What are the causes of waterlogging and salinity?

The excessive use of water for crops, non-cemented canals and a poor drainage system are causing waterlogging and salinity in the area.

What is meant by waterlogging and salinity?

Waterlogging refers to the saturation of soil with water. Salinity can restrict the urban or agricultural re-use of drainage water, as it is the most significant long-term water quality concern for managing irrigated agriculture in arid zones.

How can duty be improved?

When once the various factors affecting duty are properly understood, the duty can be improved by making those factors less effective which tends to reduce the duty. Suitable method of applying water to the crops should be used. The land should be properly ploughed and levelled before sowing the crops.

What are the factors affecting duty?

FACTORS AFFECTING DUTY

• Soil characteristics through which canal runs. If canal is unlined and soil through which it flows is coarse grained. Seepage and percolation losses will be too much and duty of water will be reduced.
• Soil characteristic of fields. If soil of the field is deep coarse grained, percolation losses will be more.

What is the crop period?

Crop Period or Base Period The time period that elapses from the instant of its sowing to the instant of its harvesting is called the crop-period. The time between the first watering of a crop at the time of its sowing to its last watering before harvesting is called the Base period.

What is the total depth of water?

Total water depth is measured by lowering a weighted line into the water and reading the depth marking on the line when it hits bottom. Total water depth of sampling sites is part of the physical characteristics of an ecosystem. Shallow sites respond differently to changing conditions than deeper sites.

When rainfall is more duty will be?

3. Rainfall: If rainfall is sufficient during the crop period, the duty will be more and vice versa.

What is the most important physical characteristics of a reservoir?

What is the most important physical characteristic of a reservoir? Explanation: The main function of a reservoir is to store water and thus to stabilize the flow of water therefore, the most important physical characteristic is its storage capacity. It is determined from the contour maps of the area.

What are the characteristics of reservoirs?

The two main characteristics of reservoir rocks that matter most to production costs, and ultimately to production rates, are porosity and permeability. Porosity and permeability are the two most important of reservoir rock characteristics.