We have got thousands of edible wild plants and animals, of which there are only three dozen or so species, are the most important foods in the human being.
The main ingredients are wheat, rice, maize, potato, barley, peas, oats, sugar, corn, beans, sorghum, millet, and many others.
The Food and Agriculture Organization of the United Nations (FAO) estimates that the average global energy costs, it is 2,500 calories per day.
In addition, the minimum caloric intake of necessary protein, minerals, etc., etc. A lack or shortage of food leading to malnutrition, which leads to a variety of illnesses.
World food issues:-
Over the past 50 years, global production has almost tripled.
But, at the same time, the growth rate of the population was as soon as in the less-developed countries (Ldcs), which have been extracted from the food production process.
Each year, 40 million, 50% of these children die as a result of starvation and stimulation.
Even though India is the third largest producer of staple foods, an estimated 300 million are Considered to have little food to eat.
The Impact of the sector:-
Land degradation Due to overgrazing by the cattle of the humus content in the soil is reduced, and the sector will lead to organic-poor, dry, compacted soil.
Erosion to Excessive grazing of cattle, and to remove the vegetation from the soil. The floor is visible, and it transformed under the influence of the wind and the water.
The loss of valuable species, especially cattle, a negative influence on the composition of plant populations and their ability to regenerate. Some of the animals are to be ?????????? on the same form. –
As a result,?????????? extensive areas of the APP. And, of Meghalaya, is ?????????? a thorny bushes, weeds, etc., etc.
. The influence of the traditional agriculture - Deforestation – the cutting and burning of trees in the woods, in a shift from the cultivation leads to deforestation.
Soil erosion-clearing-of-the-land, threatens the soil from wind and rain, resulting in the loss of the top soil.
Nutrient depletion – the cutting and burning of organic matter in the soil, it will be destroyed, and most of the nutrients are taken up by the crop in a short period of time, so that the soil is nutrient poor.
The impact of modern farming:-
HYV - The use of high-yielding encouraging monoculture. In the event of an attack by a pathogen, the exhibits have been completely drained by the disease.
The influence of fertilizers:-
Most of the chemical fertilizers used in modern agriculture, the N, P and K. the Excessive use of fertilizers to increase the yield causes an imbalance of trace elements.
Nitrogen fertilizer in the field, it is used to penetrate deep into the soil and contaminate the ground water. Nitrogen concentration, i.e. >25 mg / l, with serious risks for human health, such as "Blue Baby Syndrome"or " Children".
Most of the S& P elds, can be washed, and they end up in the water, leading to over-feeding, the lakes region, a process known as"Eutrophication". these lakes are often occupied by algal blooms. They also tend to be toxic, and bad for the food. Soon, the water was getting tired of the dissolved oxygen. This is how the marine fauna of an effect on you. Therefore, due to the excessive use of fertilizers, it is more of an ecosystem is in a state of disrepair.
A pesticide issue:-
The problem of pest resistance to some pests are likely to remain so even after the use of pesticides. The survivors of the shipwreck, give rise to a very durable for generations, the so-called " Super-pests,"
The loss of non-target organisms, Many of insecticides to kill not only the target organism, but also the species Instagram.
Many of the pesticides are not being broken down and can accumulate in the food chain, a process called biological growth, which is very, very wrong.
Flood damage: - Excessive irrigation of crops, and for a good growth and lead to water leakage. Excessive build-up of water for a single column of water. It drains into the bottom and up in the air. As it is, the roots of the plants do not get enough air to breathe, which in turn leads to a decrease in the yield. Salinity is a problem:-
Water-water that contains dissolved salts. Excessive irrigation from the waters of causes salinity problem. Under dry conditions the water evaporated leaving behind salts in upper soil profile. This causes stunted plant growth and lowers crop yield. Thousands of ha of land area in Haryana and Punjab are affected by soil salinity and alkalinity.In dry conditions, the water evaporates, leaving the salt on the top layer of the soil. This will lead to a slowdown in the growth of the plant, as well as a reduction in revenue. Thousands of acres of land in Haryana and Punjab were affected by mineralization, and the alkalinity of the soil.
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