Relative to the cost of chemical pesticides and fertilizers, they are quite expensive. Since natural ones are less effective in varying degrees, the final yield of the crop drops off to some percentage less than it would have been. When you take the loss of income and add it to the higher cost per acre of the natural product, it becomes quite costly to the farmer. If s/he can make up the difference through passing on the cost to the consumer, then the equation still works. Industrial agriculture farmers don't have that ability, however, and so cannot usually afford to use the natural product.
Fertilizers and pesticides can get into natural waters.
native plants had most requirements of fertilizers and pesticides.
People have become aware of their benefits, they contain no chemical, pesticides and fertilizers and are grown naturally with manure or compost and only natural pesticides and insecticides are used.
how might pesticides and fertilizers on land become a problem in an ocean ecosystem
Organic foods are produced without manufactured fertilizers. pesticides or weed killers only if they are considered natural.
Overuse of pesticides can lead to the development of pesticide-resistant pests, disrupting the natural balance of the ecosystem. Excessive fertilizers can lead to nutrient imbalances, soil acidification, and the loss of biodiversity in the soil. These practices can also contribute to water pollution and harm beneficial soil organisms.
Organic food is more natural because it is grown without synthetic fertilizers and pesticides and is not GMO. If it is processed, it does not contain additives and preservatives that may be harmful to health.
Whale Sperm
you can investigate which natural materials, eg used tea leaves, fruit peels.. makes an excellent plant fertilizer
Fertilizers contain high levels of nutrients that can leach into the soil and water bodies, leading to nutrient imbalances and harmful algal blooms. Pesticides can persist in the soil, affecting soil organisms and disrupting the ecosystem. Both fertilizers and pesticides can also contaminate groundwater and surface water, leading to soil pollution.
raw sewage, chemical pesticides and fertilizers
Fertilizers are not so much of a problem. The biggest problem is the use of pesticides on crops.