Weed control is vital to agriculture, because weeds decrease yields, increase production costs, interfere with harvest, and lower product quality. Weeds also impede irrigation water-flow, interfere with pesticide application, and harbour disease organisms.
Major crop nutrient fertilizers (nitrogen, phosphorus and potassium (NPK)) are typically applied in powdered (small particles), granular (larger particles) or in liquid form either as individual or as compound fertilizers. The fertilizer may be applied using a combine (corn) drill where the seed is contained in one hopper and dry fertilizer in another behind it.

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Weed control is vital to agriculture, because weeds decrease yields, increase production costs, interfere with harvest, and lower product quality. Weeds also impede irrigation water-flow, interfere with pesticide application, and harbour disease organisms.
Major crop nutrient fertilizers (nitrogen, phosphorus and potassium (NPK)) are typically applied in powdered (small particles), granular (larger particles) or in liquid form either as individual or as compound fertilizers. The fertilizer may be applied using a combine (corn) drill where the seed is contained in one hopper and dry fertilizer in another behind it.

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