Water Management

Seeds Land Planting Nutrient Water Pest HarvestPinoy Rice - Harvest

water-management-imgKEY CHECK 6:
AVOIDED STRESS CAUSED BY DROUGHT
OR EXCESSIVE WATER THAT COULD AFFECT
THE GROWTH AND YIELD OF THE CROP.

The right volume of water promotes better nutrient uptake, good plant vigor, better snail and weed management, uniform growth and maturity, and more efficient farm operations.

Insufficient water causes drought stress that results in low fertilizer efficiency, and low yield and low rain quality. Excessive water results in higher irrigation cost (if using pump), nutrient imbalance, low yield, and more greenhouse gas emissions.

ASSESSMENT OF KEY CHECK

  • No symptoms of water stress due to drought from seedling through the dough grain stages.

No symptoms of water stress due to excessive irrigation water during the vegetative phase.

Symptoms of water stress during the vegetative phase:
Drought stress (deep soil-cracking for more than three days):

  • Leaf rolling and leaf tip-drying
  • Stunted growth

Excessive water stress (>5cm water depth for seven days or more):

  • Reduced tillering (<10 tillers per hill)
  • Smaller leaf area
  • Roots are dark-colored instead of reddish brown or lighter

Symptoms of water stress due to drough during the panicle initiating to grain-filling stages:

  • Leaf-rolling and leaf-tip drying
  • Many unfilled spikelets
  • Reduced panicle exsertion

RECOMMENDATIONS TO ACHIEVE KEY CHECK

  1. Achieve 3-5 cm water level every irrigation time from early tillering until 1-2 weeks before harvest, except during the flowering stage when 5-7cm water level should be maintained.If DWSR, suspend irrigation for 0-14 DAS, unless severe drought symptoms appear.

  2. Drain water or stop irrigation:
    • One week before expected date of harvest for medium-textured soil or during DS
    • Two weeks before expected date of harvest for fine-textured soil during WS.
  3. If water is scarce, practice controlled irrigation. During crop growth, practice the alternate Wetting and Drying (AWD) technology aided by an observation well.

MATERIALS

Handouts

pamamahala-ng-tubig

Pamamahala ng tubig

alternate-wetting-and-drying

Alternate Wetting and Drying

small-farm-reservoir-handout

Small Farm-Reservoir

teknolohiyang-nakatitipid-sa-pagpapatubig-ng-palay

Teknolohiyang nakatitipid sa pagpapatubig ng palay

 

Learning Modules

Land preparation

Water management

 

Audio Clips

pagpapatubig

Pagpapatubig

controlled-irrigation

Controlled irrigation

kahalagahan-ng-patubig-sa-palayan

Kahalagahan ng patubig sa palayan

mga-pamamaraan-sa-pagtitipid-ng-tubig

Mga pamamaraan sa pagtitipid ng tubig

 

Technology Videos

Key check 6 Pamamahala ng Tubig

Key check 6: Naiwasan ang sobra o kulang na tubig na nakakaapekto sa paglaki at ani ng palay

Kontroladong Pagpapatubig

Kontroladong Pagpapatubig

El Nino Di na Bago, Kaya Natin ‘to Series- Epekto ng El Niño sa Pagsasaka

El Nino Di na Bago, Kaya Natin ‘to Series- Epekto ng El Niño sa Pagsasaka

El Nino Di na Bago, Kaya Natin ‘to Series- Epekto ng El Niño sa Pagsasaka

El Nino Di na Bago, Kaya Natin ‘to Series- Epekto ng El Niño sa Pagsasaka