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It is wrong to blame the farmer for setting fire to grasslands during drought or the dry season. Most causes of fires occur from lightning, a careless person throwing a still-lit cigarrette into the grass at the side of a road, or leaving a campfire still smoldering, sparks from train tracks, etc. Many farmers and ranchers would rather not set fires to grasslands because of the high risk that that fire will burn out of control and destroy their neighbors' property.

A controlled burn is only done during the more moister parts of the season (and the days that are not windy) to avoid any fires that may run out of control. It is done to rangeland areas as way to get rid of all that accumulated dead grass that is preventing new shoots to come up through, and also to destroy any over-zealous trees or shrubs from further encroaching onto natural grassland habitat. Typically, natural grass fires occur once every 2 to 5 years in a grassland. The grass that is burned allows for more nutrient absorption by the new grasses and also allows the sun to penetrate the ground so that these new grasses can grow more vigorously. Fires to forests destroy trees that often perish and do not grow back when a fire occurs. This allows grass to penetrate and take over these areas.

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Q: Why do farmers set fire to grasslands in dry season?
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