Crop Water Requirements and Irrigation Guidelines Quiz

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Questions and Answers

What is the primary topic discussed in the FAO Irrigation and Drainage Paper No. 56?

  • Crop Water Requirements (correct)
  • Evaluation of Irrigation Furrows
  • Soil and Water Terminology
  • Open Channel Hydraulics

Which publication discusses guidelines on the safe re-use of wastewater for irrigation purposes?

  • Technical Bulletin No. 1 Gintong Ani Shallow Tubewell Irrigation Project
  • FAO Agricultural Development Paper 95: Surface Irrigation
  • Chapter IV: Shallow Tubewell Construction and Development
  • Department of Agriculture Administrative Order No. 26 Series of 2007 (correct)

Which author(s) proposed methodologies/strategies for the development of location-specific irrigation design criteria?

  • David, W.P., Firmalino R.B.and L.C.Tecson (correct)
  • Gintong Ani Shallow Tubewell Irrigation Project
  • Booher, L.J.
  • Chow, V.T.

In which document can one find information on soil and water terminology?

<p>ASAES526.3 SEP2007 Soil and Water Terminology (A)</p> Signup and view all the answers

What is the definition of an unlined canal?

<p>Canals with a lining made of soil excavated from the bed (A)</p> Signup and view all the answers

What does the term 'water balance' refer to?

<p>Accounting of water inflows and outflows (D)</p> Signup and view all the answers

In an unconfined aquifer, what serves as the upper surface of the zone of saturation?

<p>Water table (A)</p> Signup and view all the answers

What type of rainfall pattern is characterized by five wet months with more than 200 mm/month precipitation?

<p>Unimodal (A)</p> Signup and view all the answers

What privilege is granted by the government according to the text?

<p>Water right privileges (D)</p> Signup and view all the answers

What does a well log provide information about?

<p>Formation stratification of an aquifer (B)</p> Signup and view all the answers

What is the active storage volume of water in a reservoir?

<p>Water stored between normal and maximum water levels (D)</p> Signup and view all the answers

What does crop coefficient ratio measure?

<p>Crop evapotranspiration to potential evapotranspiration (A)</p> Signup and view all the answers

Which factor affects the actual crop evapotranspiration rate?

<p>Soil moisture and salinity (D)</p> Signup and view all the answers

What is the application efficiency ratio in irrigation?

<p>Average depth of water infiltrated to average depth applied (D)</p> Signup and view all the answers

What is the primary component of crop water requirements?

<p>Evapotranspiration and consumptive use (C)</p> Signup and view all the answers

What does effective rainfall directly contribute to in agriculture?

<p>Crop growth and development, excluding losses (D)</p> Signup and view all the answers

What is leaching in agriculture?

<p>Deep percolation beyond root zone causing salt loss (B)</p> Signup and view all the answers

'Drop in-line canal' structures are designed for what purpose?

<p>Convey canal water from higher to lower levels while dissipating energy (D)</p> Signup and view all the answers

'Effluent discharges' involve passing what into a body of water or land?

<p>Wastewater or known water sources (B)</p> Signup and view all the answers

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Study Notes

FAO Irrigation and Drainage Paper No. 56

  • Discusses guidelines on the safe re-use of wastewater for irrigation purposes

Irrigation Design Criteria

  • Proposed methodologies/strategies for development of location-specific irrigation design criteria by some authors

Soil and Water Terminology

  • Information on soil and water terminology can be found in a specific document

Unlined Canal

  • An unlined canal is a type of canal without a liner or coating

Water Balance

  • Refers to the balance between water input and output in a system

Unconfined Aquifer

  • The upper surface of the zone of saturation is served by the water table

Rainfall Pattern

  • The type of rainfall pattern characterized by five wet months with more than 200 mm/month precipitation is known as a humid climate

Government Privilege

  • The government grants a license or permit to use water resources

Well Log

  • Provides information about the geological formation and water-bearing properties of a well

Reservoir Storage

  • The active storage volume of water in a reservoir is the amount of water that can be used for irrigation

Crop Coefficient Ratio

  • Measures the evapotranspiration rate of a crop relative to a reference crop

Crop Evapotranspiration Rate

  • Is affected by factors such as climate, soil, and crop type

Application Efficiency Ratio

  • Refers to the ratio of water actually used by the crop to the water applied through irrigation

Crop Water Requirements

  • The primary component is the evapotranspiration rate of the crop

Effective Rainfall

  • Directly contributes to the crop water requirements by reducing the need for irrigation

Leaching in Agriculture

  • Refers to the process of dissolving and washing away nutrients and salts from the soil

Drop in-line Canal Structures

  • Designed to reduce the energy of flowing water and prevent erosion in a canal

Effluent Discharges

  • Involve passing wastewater into a body of water or land

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