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EXAMPLES OF APPROPRIATE TECHNOLOGY IN AGRICULTURE

new seeds and plant varieties

natural preditor

Opportunities remains in agricultural researchers to extend the number and range of higher yielding hybrids for use in asia, such as new seeds for rain-fed rather than irrigated rice feilds.

For farmers in Africa, who have benifited much less from the GREEN REVOLUTION than those in latin america and Asia, there are opportunities for reasearch into a wider range of crops such as millet, legumes, and roots.

Other than harmful pesticide the other thing that destroyed or damaging the crops are the natural predators like birds and small animal and insects that eats and damage the crops

mixed cropping

organic fertilizer

monoculture is often practiced on large farms, especially on plantations in the tropics where any one crop is grown for export.

On small farms,growing a mixture of cash crops and subsistence crops is healthier for both environmental and economic reasons.

Chemical fertilizers are expensive as well as being bad for the environment.Organic fertilizer from animal is much better

IRRIGATION

pros and cons of organic

fertilizer

pros and cons of chemical

fertilizer

pros

In addition to releasing nutrients, as organic fertilizers break down, they improve the structure of the soil and increase its ability to hold water and nutrients.

PROS

-Since nutrients are available to the plants immediately, improvement occurs in days.

-They are highly analyzed to produce the exact ratio of nutrients desired.

-Standardized labeling makes ratios and chemical sources easy to understand.

Instead of large dams and irrigation schemes, more wells should be dug to give a local supply of water that is reliable.

One of the more water

well-sufficient ways to irrigate crops is to use trickle drip irrigation.

CONS

Nutrient ratios are often unknown, and the overall percentage is lower than chemical fertilizers. However, some organic products are actually higher in certain nutrient

-Chemical fertilizers are primarily made from nonrenewable sources, including fossil fuels.

-Because the nutrients are readily available, there is a danger of over fertilization. This not only can kill plants but upset the entire ecosystem.

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