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Fertilizer:
Fertilizers are compounds given to plants to promote growth; they
are usually applied either via the soil, for uptake by plant roots,
or By foliar feeding, for uptake through leaves. Fertilizers can be
organic. They can be naturally occurring compounds such as peat Mineral
deposits, manufactured through natural processes chemical processes.Fertilizers
typically provide, in varying proportions, the three major plant nutrients,
the secondary plant nutrients, and sometimes trace Elements with a
role in plant nutrition: boron, chlorine, manganese, iron, zinc, copper,
and molybdenum.In the past, both organic and inorganic fertilizers
were called "manures," but this term is now mostly restricted
to man-made manure.Though nitrogen is plentiful in the earth's atmosphere,
relatively few plants engage in nitrogen fixation conversion of atmospheric
Nitrogen to a biologically. Most plants thus require nitrogen compounds
to be present in the soil in which they grow. Biopesticides:
Biopesticides
include fungi, bacteria, neem extract and pheromones. The effectiveness
of many biopesticides equals that of Conventional chemical pesticides,
but there are two distinct differences. Biopesticides take longer
to kill the insect, plant diseases or weeds, between 2 and 10 days.
More importantly, while there are approximately 25 million cases
of severe work-related pesticide poisoning in developing countries
each year, biopesticides are usually harmless to other creatures
and the environment.
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