Effect on agriculture

Effect on agriculture
Rainfall estimates for southern Japan and the surrounding region from July 20–27, 2009.

Precipitation, especially rain, has a dramatic effect on agriculture. All plants need at least some water to survive, therefore rain (being the most effective means of watering) is important to agriculture. While a regular rain pattern is usually vital to healthy plants, too much or too little rainfall can be harmful, even devastating to crops. Drought can kill crops and increase erosion,[102] while overly wet weather can cause harmful fungus growth.[103] Plants need varying amounts of rainfall to survive. For example, certain cacti require small amounts of water,[104] while tropical plants may need up to hundreds of inches of rain per year to survive.

In areas with wet and dry seasons, soil nutrients diminish and erosion increases during the wet season.[24] Animals have adaptation and survival strategies for the wetter regime. The previous dry season leads to food shortages into the wet season, as the crops have yet to mature.[105] Developing countries have noted that their populations show seasonal weight fluctuations due to food shortages seen before the first harvest, which occurs late in the wet season.[106] Rain may be harvested through the use of rainwater tanks; treated to potable use or for non-potable use indoors or for irrigation,.[107] Excessive rain during short periods of time can cause flash floods.[108]






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