Read the statements given below.Choose the combination of statements that indicate the need to irrigate crops. (2024)

FAQs

Which indicates the need to irrigate crops? ›

Final Answer: Irrigation is needed particularly for seed germination and nutrient absorption.

The water used in producing both irrigated and nonirrigated crops in the valley's diverse agricultural system depends on several factors, including crop and soil type, precipitation and temperature, water rights, costs, and other factors.

The factors that affect irrigation water requirements are age of plant, type of soil, temperature, level of sunlight, and water needed.

Irrigation scheduling techniques can be based on soil water measurement, meteorological data or monitoring plant stress. Conventional scheduling methods are to measure soil water content or to calculate or measure evapotranspiration rates.

You'll be able to tell if your plant needs watering by observing the dryness of the soil surface, as well more accurate techniques like poking your finger in the soil and picking pots up to determine their weight. You can also use a moisture sensor to quickly and accurately check soil moisture levels.

In such cases the irrigation water need (IN) is the difference between the crop water need (ET crop) and that part of the rainfall which is effectively used by the plants (Pe). In formula: IN = ET crop - Pe.

Irrigation is essential for the absorption of nutrient elements by the crop plants from the soil. The irrigation water tends to dissolve the nutrients present in the soil of a crop field to form a Solution. This Solution of nutrients is then absorbed by the roots of crops for the development of the plants.

Efficient irrigation depends on a balance between the atmospheric and edaphic (soil) conditions. Atmospheric precipitation and evaporation play important roles as does the water-holding characteristics of the soil.

The crop water need (ET crop) is defined as the depth (or amount) of water needed to meet the water loss through evapotranspiration. In other words, it is the amount of water needed by the various crops to grow optimally.

What is the irrigation requirement? ›

Net irrigation water requirement (NIWR) is the quantity of water necessary for crop growth. It is expressed in millimeters per year or in m³/ha per year (1 mm = 10 m³/ha). It depends on the cropping pattern and the climate.

Irrigation must be able to supply water at the expected peak water use rate in order to be totally successful during rainfall-deficient periods. The peak water use rate for vegetables and most grain crops falls between 0.2 and 0.25 inches per day (5,500 to 7,000 gallons per acre per day).

Four methods of irrigation include surface irrigation (basin, bordered, uncontrolled flooding, and furrow irrigation), sprinkler irrigation, drip/trickle irrigation, and subsurface irrigation. There are many benefits of irrigation, but irrigation can also cause an alteration in the surrounding landscape.

Irrigation is the the controlled application of water for agricultural purposes through manmade systems to supply water requirements not satisfied by rainfall. CENTER-PIVOT. DRIP OR MICROIRRIGATION. FLOOD OR FURROW. SPRAY OR SPRINKLER.

Irrigation is the process of applying water to the crops artificially to fulfil their water requirements. Nutrients may also be provided to the crops through irrigation. The various sources of water for irrigation are wells, ponds, lakes, canals, tube-wells and even dams.

What is Water Requirement of Crops? The amount of water needed for crop growth is determined by crop characteristics, management practices, and environmental demands. Generally, corn requires about 600-650 mm of water, while sorghum requires 450-650 mm, depending on the hybrid type and growing conditions.

The best time for lawn irrigation is in the early morning hours. Watering during the day wastes water to excessive evaporation. Watering in late afternoon or late morning may be detrimental if it extends the time the lawn is naturally wet from dew.

Water applied as irrigation allows for crop production in arid regions and supplements soil moisture in humid regions when growing season precipitation is insufficient. Irrigation has enhanced both the productivity and profitability of the agricultural sector.

By making use of the latest technology in terms of smart soil moisture sensors and the associated software, farmers are shown when and how much water to deliver.