What is the best amount of rain for agriculture?

7 Answers

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  • 5 months ago

    Depends on the crop. For example wheat probably needs about 300 - 400 millimetres of rain over six months spread out roughly evenly over the six months to grow a decent wheat crop. Where as canola would need more like 350 - 450 millimetres of rain spread out roughly evenly over six months to grow a decent canola crop. An inch of rain is a good opening rain. Then you’d hope for few days of sunshine and then start seeding.

    Source(s): Well grew up on a grain farm and worked on a grain farm for six years so should know some about wheat and canola farming.
  • 8 months ago

    Rain water is preferred for its quality compared to saline water. Rain water should be captured and stored. Crops that consume less amount of water like sorghum have to be planted instead of sugarcane and cane sugar is not needed for a world whose large number of people suffer from diabetes and obesity. Micro-irrigation methods like drip-irrigation and sprinklers have to used to provide right amount of water around the root portion every day. Vertical farming and ponics or soil-less farming should be developed to save on use of land and water and prevent heavy rains and flooding or high temperatures from damaging the crops.

  • 9 months ago

    Depends on your crop(s).  My pop always said an inch of rain a week for corn & soybeans.  

  • 9 months ago

    it depends on what you are trying to grow, or if you are doing livestock agriculture. Some crops require minimal precipitation. What tends to matter the most is your soil, because some soils have better water retention than others

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  • John
    Lv 4
    9 months ago

    That question cannot be specifically answered. That is because plants throughout the world have adapted to particular climate regimes. Crops such as grains grow best under temeperate conditions with cold winters, mild summers, and an average rainfall of between about 20 to 30 inches annually. Citrus trees cannot tolerate the cold and grow in much warmer climates with about double the rainfall.

  • Enough but not too much to get best yields and quality.

  • 9 months ago

    That depends on what you are raising. Bananas, for example, require a lot more than switchgrass (for ethanol production).

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