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  2. Alternate wetting and drying - Wikipedia

    en.wikipedia.org/wiki/Alternate_wetting_and_drying

    A water tube/pipe made of PVC is usually used to practice AWD method. The main purpose of the tube is to monitor the water depth. The tube allows measuring water availability in the field below the soil surface. The usual practice is to use a pipe of 7–10 cm diameter and 30 cm long, with perforations in bottom 20 cm.

  3. Aquaponics - Wikipedia

    en.wikipedia.org/wiki/Aquaponics

    A commercial aquaponics system. An electric pump moves nutrient-rich water from the fish tank through a solids filter to remove particles the plants above cannot absorb. The water then provides nutrients for the plants and is cleansed before returning to the fish tank below.

  4. Rice polyculture - Wikipedia

    en.wikipedia.org/wiki/Rice_polyculture

    Rice polyculture is the cultivation of rice and another crop simultaneously on the same land. The practice exploits the mutual benefit between rice and organisms such as fish and ducks: the rice supports pests which serve as food for the fish and ducks, while the animals' excrement serves as fertilizer for the rice.

  5. Hydroponics - Wikipedia

    en.wikipedia.org/wiki/Hydroponics

    In its simplest form, nutrient-enriched water is pumped into containers with plants in a growing medium such as Expanded clay aggregate At regular intervals, a simple timer causes a pump to fill the containers with nutrient solution, after which the solution drains back down into the reservoir. This keeps the medium regularly flushed with ...

  6. In Vietnam, farmers reduce methane emissions by changing how ...

    www.aol.com/news/vietnam-farmers-reduce-methane...

    Using less water and using a drone to fertilize are new techniques that Van is trying and Vietnam hopes will help solve a paradox at the heart of growing rice: The finicky crop isn’t just ...

  7. Rice-fish system - Wikipedia

    en.wikipedia.org/wiki/Rice-fish_system

    The rice provides the fish with shelter and shade and a reduced water temperature, along with herbivorous insects and other small animals that feed on the rice. [7] Rice benefits from nitrogenous waste from the fish, while the fish reduce insect pests such as brown planthoppers , diseases such as sheath blight of rice , and weeds. [ 7 ]

  8. Built on backs of slaves: New mapping shows clearer picture ...

    www.aol.com/news/built-backs-slaves-mapping...

    Today, of the 236,112 acres of rice fields that were documented, about 39,000 acres of tidal rice fields still have dike and water infrastructure and are managed for wildlife, such as Nemours.

  9. Center-pivot irrigation - Wikipedia

    en.wikipedia.org/wiki/Center-pivot_irrigation

    A satellite image of circular fields characteristic of center pivot irrigation, Kansas Farmland with circular pivot irrigation. Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers.