What is the use of rain gauge?
A rain gauge is a meteorological instrument to measure the precipitating rain in a given amount of time per unit area. The instrument consists of a collection container which is placed in an open area.
What is rain gauge in irrigation?
A rain gauge measures not only rain, but dew and mist. A garden rain gauge also can be used to keep track of sprinkler output, completing the task of managing irrigation. To assure an accurate reading, the rain gauge should be placed in an open area away from trees, the house, and other outbuildings.
Which instrument is used in irrigation scheduling?
The irrigation scheduling in paddy is mainly done by tensiometer. This method saves 20 per cent of the water.
What are the main features of a rain gauge?
A standard rain gauge has a graduated cylinder, or a cylinder with measurement marks on the side and a funnel on top. When rain falls, it goes into the funnel and collects in the graduated cylinder. Many rain gauges have two cylinders: a smaller cylinder inside of a larger cylinder.
What is a rain gauge and mention its 2 uses?
A rain gauge is a pluviometer. The function or rather uses of rain gauge are as follows: 1. To measure the fluid amount in a defined precipitated space over time reference.
What is irrigation scheduling methods?
For irrigation scheduling, two methods were presented: (1) FAO (1989) and (2) water balance method. The former approach provides a general idea of irrigation scheduling, whereas the latter approach is quite comprehensive and is based on daily soil moisture balance.
What is irrigation scheduling?
Scheduling irrigation involves making a decision of how much water to apply and when. Three factors enter into the decision: water needs of the plants, water availability, and storing capacity of the soil around the roots. When to irrigate should be greatly influenced by water needs of the plants.
What are the parts of a rain gauge?
The rain gauge is composed of three parts: a funnel, a measuring tube, and a 4-inch diameter overflow tube, and a mounting bracket. The funnel directs the precipitation into the measuring tube and magnifies it by a factor of 10. This allows observers to report rainfall to the nearest 0.01″ (one hundredth of an inch).
Why is irrigation scheduling important?
Irrigation scheduling offers several advantages: It enables the farmer to schedule water rotation among the various fields to minimize crop water stress and maximize yields. It reduces the farmer’s cost of water and labouras it minimizes thenumber of irrigations.
Why is irrigation scheduling necessary?
The importance of irrigation scheduling is that it enables the irrigator to apply the exact amount of water to achieve the goal. This increases irrigation efficiency. A critical element is accurate measurement of the vol ume of water applied or the depth of application.
What is the importance of irrigation scheduling?
What are the principles of irrigation scheduling?
The goal in irrigation scheduling is to apply enough water to fully wet the plant’s root zone while minimizing overwatering and then allows the soil to dry out in between watering, to allow air to enter the soil and encourage root development, but not so much that the plant is stressed beyond what is allowable.
What are the advantages of recording rain gauge?
Advantages of recording rain gauges:
- Necessity of an attendant does not arise.
- Intensity of rainfall at anytime as well as total rainfall is obtained, where as non recording.
- Data from in accessible places (hilly regions) can be continuously obtained once gauge is.
- Human errors are eliminated.
- Capacity of gauges is large.
What are the three main parts of the rain gauge?
There are three components in the rain gauge: a funnel, a measuring tube, a 4-inch diameter overflow tube, and a mounting bracket. The funnel directs and magnifies the precipitation by a factor of 10 into the measuring tube.
What is irrigation scheduling system?
Irrigation scheduling is the decision of when and how much water to apply to a field. Its purpose is to maximize irrigation efficiencies by applying the exact amount of water needed to replenish the soil moisture to the desired level. Irrigation scheduling saves water and energy.
What is the purpose of irrigation scheduling?
Irrigation scheduling is the decision of when and how much water to apply to a field. Its purpose is to maximize irri gation efficiencies by applying the exact amount of water needed to replenish the soil moisture to the desired level. Irrigation scheduling saves water and energy.
What factors affect the scheduling of irrigation water?
Principles of Irrigation Scheduling
- Soil moisture. Sites for monitoring soil moisture should be chosen to be most representative of the field.
- Root zone depth. Root zone depth is the zone where most of the root structure is found.
- Water holding parameters (Figure 1).
- Effective irrigation.
- Daily water use.
How much rain do I need to manage my irrigation?
You are ready to record your local precipitation. The rain gauge is also a great tool to manage your irrigation. 1 to 2 inches (2.5-5 cm.) of water per week is recommended for most lawns and gardens. To use the rain gauge to measure the output of your sprinkler system, be sure it is in the path of the area being watered.
What is a rain gauge?
A rain gauge is an instrument you can use to measure the amount of rainfall your area receives in a given time period. With this, you won’t have to rely on local weather reports.
Why is the rainfall data of a rain gauge station inconsistent?
The inconsistencies in the rainfall data of a station may be due to various reasons. The rain gauge station might have been installed at different sites in the past that is through there is a long and continuous rainfall record.
What type of site is required for a rain gauge project?
The site should be in levels ground and other types of the ground like hilltops, hill slope, etc undulation type of slope is not suitable. The site should be an open space. The nearest object from the rain gauge should be kept at a distance of twice the height of the object. Sad should be away from continuous wind forces.