When And Where Did Agriculture Start?

The whole cycle of agriculture started roughly 10,000 years ago, where the recorded but unconfirmed and unverified planned sowing and harvesting of the crops in the the fields could have taken place in Fertile Crescent of  Egypt, Western Asia and maybe India, that have actually been gathered in the wild outside. According to some research findings, they stated that independent development of agricultural purpose have originated from a few countries, including both part of China, New Guinea, the whole of Africa, and some part of Africa, but the time and date is unconfirmed yet. The crops that were grown during these periods ranges, from wheat, peas, barley, flax, lentils and many other different types of plants.

Around 5000 BC, the Sumerians have already developed large-scale intensive crop cultivation in the entire world, mono-cropping, the use of labor force and also organized irrigation. They have also make use of animals, like water buffalo and cows to do their work for them.

Also, during the middle Ages, three-crop rotation came to the fold and the usage of high-tech irrigation systems and dams based on hydraulics principals, thus boosting agricultural efficiency.

Now, in the modern era, crops and animals were inter-exchanged with each other for profit. The potato became to become a important livestock and staple food for Europeans, maizes for Africans. Soon, mechanized tools soon came to the fore, where tractors and cranes and the use of pesticides and  herbicides, that was to increase the speed of harvesting crops and increase productivity, allowing more crop yields, but it increased the wrath of certain number of environmental companies, concerning over pollution issues, resulting into the organic movement.

Agriculture began due to a combination of geographic, climatic, and biotic factors. Western Eurasia (Europe plus Southwest Asia) includes the world's largest zone of so called Mediterranean climate, characterized by mild, wet winters and hot, dry summers. The world's other Mediterranean zones are the Cape of South Africa, the central coast of Chile, parts of southern Australia, and my of coastal California. Among those Mediterranean zones, western Eurasia's is not only the largest but may also experience the greatest climatic variation between seasons and years. That climate favored the evolution of annual plants that survived the long, dry summer by putting much of their energy into big, edible seeds, while leaving the inedible remainder of the plant to die back and regrow each year. Because of the Fertile Crescent's extreme Mediterranean climate, its plants provided hungry humans with an exceptionally high percentage of annuals.

There are a few main theories why agriculture developed. These are climate change, increased population density and for cultural progress.
The first is climate change. Agriculture began around 12500 years ago and around this time the climate was warming up. This meant that the growing of crops would have been easier and in some places possible.
At the time populations were increasing and becoming denser. This meant than hunting and gathering sources were becoming less dependable, and evidence shows some species of game were going extinct at this time. Agriculture provided food for a growing population and was more dependable. However, during droughts problems would have occurred. When agriculture began it would have been practised side by side with hunting and gathering.
Another theory for agriculture is for cultural progress. The free time it gave societies meant they could construct great feats of architecture, as well as detailed art and technology. However, it has been argued that this would have happened as a by product as opposed to a reason for starting architecture.
Agriculture first began in the Fertile Crescent in the Near East an area that corresponds to modern day Syria, Jordan, Iran, Iraq, Lebanon, Israel and parts of Turkey. Possible reasons for beginning in this area was the climate and fertile soils.
The first crop to be domesticated was wheat, other early crops grown were Barley, Peas Lentils and in Asia rice.

Hope this helps

Well, the agricultural revolution happened around 10,000 BCE. (before common era) and people started farming because they were nomadic prior to the discovery of it all. They figured out that plants regrow, so that led to them to no longer being nomadic because they no longer had to scavenge for food.

There is limited evidence of grain-grinding and perhaps crop-sowing before 10,000 BC in Abu Hureyra (modern Syria), as well as in about 10,000 BC on parts of the Nile flood plain, North Africa.  Slightly later (9500 BC) evidence is that some selection of seeds for sowing occurred in the Levant Region of the 'Fertile Crescent' which is a strip of land curving from the modern countries of Jordan through Turkey and into Iraq and Iran (see www.mrdowling.com

However, systemic and widespread cultivation of crops appears not to have occurred until about 8500 BC, when it suddenly became widespread in the Fertile Crescent.  This may have been due to both climate and societal changes.  The main crops were relatives of modern wheat (emmer, einkorn), barley, flax, pea, lentil, bitter vetch (a lentil-type crop) and chickpea.  Systematic organised agriculture, including mono-cropping, irrigation and an allocated workforce does not appear to have happened in the region until about 5500 BC.   Farming did not reach north-western Europe until about 4800 BC.

Spontaneous cultivation of new agricultural crops seems to have happened again and again in human history.  Teosinte (the simplest maize plant) was first cultivated in the meso-Americas in about 3500BC, potatoes in South America about 5000BC, rice by 5000 BC in China.

According to the Sumerians, who as another has mentioned, had the largest-scale agricultural system in the ancient world, the Goddess Inanna (known as Ishtar/Ishtari in Akkad and Babylon) is/was directly responsible for humanity's spontaneous acquisition of the skills necessary to cultivate crops (horticulture/agriculture). As most archeological and scientific evidence indicates, to this day there has been no "objective" Western answer offered to respond to the question of how exactly human beings spontaneously developed this skill. Inventions throughout history have pre-cursors, that is, in regards to technological advances, very little is totally original or without previous inspiration (the wheel for example, is an improvement upon the ability of logs to roll something placed atop of them along). Horticulture, however, is seemingly without pre-cursor, at least within the archeological record. I for one hold on to the understanding that it was Inanna who lifted it us out of the hunter-gatherer way of life; it takes intervention to get people to abandon an established way of life, an entire culture based around hunting and gathering would have to be abandoned to accommodate for a lifestyle in which one remained in one place, planted and nursed plants and refined the products into food. Of course others might disagree, though their arguments wouldn't amount to much more than assuming that the ability to farm plants is one that developed innately with the evolution of the brain or occurred as an idea when one or several human beings observed some animal in nature that gathered and used seeds.

Agriculture began around 12500 year ago and around this time the climate was warming up

It is in the 3000bce

But when did man say,  I think ill plant this seed like thing here, and have it grow?? When did that happen I ask you