Agriculture in ancient Rome was not only a necessity, but was idealized among the social elite as a way of life. Cicero considered farming the best of all Roman occupations. In his treatise On Duties, he declared that "of all the occupations by which gain is secured, none is better than agriculture, none more profitable, none more delightful, none more becoming to a free man." When one of his clients was derided in court for preferring a rural lifestyle, Cicero defended country life as "the teacher of economy, of industry, and of justice" (parsimonia, diligentia, iustitia). Cato, Columella, Varro and Palladius wrote handbooks on farming practice.
The staple crop was spelt, and bread was the mainstay of every Roman table. In his treatise De agricultura ("On Farming", 2nd century BC), Cato wrote that the best farm was a vineyard, followed by an irrigated garden, willow plantation, olive orchard, meadow, grain land, forest trees, vineyard trained on trees, and lastly acorn woodlands. Though Rome relied on resources from its many provinces acquired through conquest and warfare, wealthy Romans developed the land in Italy to produce a variety of crops. "The people living in the city of Rome constituted a huge market for the purchase of food produced on Italian farms."
Land ownership was a dominant factor in distinguishing the aristocracy from the common person, and the more land a Roman owned, the more important he would be in the city. Soldiers were often rewarded with land from the commander they served. Though farms depended on slave labor, free men and citizens were hired at farms to oversee the slaves and ensure that the farms ran smoothly.
Farming practices 
In the 5th century BC, farms in Rome were small and family-owned. The Greeks of this period, however, had started using crop rotation and had large estates. Rome's contact with Carthage, Greece, and the Hellenistic East in the 3rd and 2nd centuries improved Rome's agricultural methods. Roman agriculture reached its height in productivity and efficiency during the late republic and early empire.
Farm sizes in Rome can be divided into three categories. Small farms were from 18–108 iugera. (One iugerum was equal to about 0.65 acres or a quarter of a hectare). Medium-sized farms were from 80–500 iugera. Large estates (called latifundia) were over 500 iugera.
In the late Republican era, the number of latifundia increased. Wealthy Romans bought land from peasant farmers who could no longer make a living. Starting in 200 BC, the Punic Wars called peasant farmers away to fight for longer periods of time.
Cows provided milk, and oxen and mules did the heavy work on the farm. Sheep and goats were cheese producers, and were prized for their hides. Horses were not widely used in farming, but were raised by the rich for racing or war. Sugar production centered on beekeeping, and some Romans raised snails as luxury food.
The Romans had four systems of farm management: direct work by owner and his family; tenant farming or sharecropping in which the owner and a tenant divide up a farm's produce; forced labour by slaves owned by aristocrats and supervised by slave managers; and other arrangements in which a farm was leased to a tenant.
Cato the Elder (also known as "Cato the Censor") was a politician and statesman in the mid-to-late Roman Republic and described his view of a farm of 100 iugera. He claimed such a farm should have "a foreman, a foreman's wife, ten laborers, one ox driver, one donkey driver, one man in charge of the willow grove, one swineherd, in all sixteen persons; two oxen, two asses for wagon work, one ass for the mill work." He also said that such a farm should have "three presses fully equipped, storage jars in which five vintages amounting to eight hundred cullei can be stored, twenty storage jars for wine-press refuse, twenty for grain, separate coverings for the jars, six fiber-covered half amphorae, four fiber-covered amphorae, two funnels, three basketwork strainers, [and] three strainers to dip up the flower, ten jars for [handling] the wine juice..."
There was much commerce between the provinces of the empire, and all regions of the empire were largely economically interdependent. Some provinces specialized in the production of grain, others in wine and others in olive oil, depending on the soil type. Columella writes in his Res Rustica, "Soil that is heavy, chalky, and wet is not unsuited to the growing for winter wheat and spelt. Barley tolerates no place except one that is loose and dry."
Some crops grown on Roman farms included artichoke, mustard, coriander, rocket, chives, leeks, celery, basil, parsnip, mint, rue, thyme 'from overseas', beets, poppy, dill, asparagus, radish, cucumber, gourd, fennel, capers, onions, saffron, parsley, marjoram, cabbage, lettuce, cumin, garlic, figs, grapes, 'Armenian' apricots, plums, mulberries, and peaches.
Greek geographer Strabo considered the Po Valley (northern Italy) to be the most important economically because "all cereals do well, but the yield from millet is exception, because the soil is so well watered. The province of Etruria had heavy soil good for wheat. Volcanic soil in Campania made it well-suited for wine production. In addition to knowledge of different soil categories, the Romans also took interest in what type of manure was best for the soil. The best was poultry manure, and cow manure one of the worst. Sheep and goat manure were also good. Donkey manure was best for immediate use, while horse manure wasn't good for grain crops, but according to Marcus Terentius Varro, it was very good for meadows because 'it promotes a heavy growth of grass plants like grass.'"
In the Roman Empire, a family of 6 people would need to cultivate 12 iugera/ 3 hectares of land to meet minimum food requirements (without animals). If a family owned animals to help cultivate land, then 20 iugera was needed. The same amount would also be required to meet subsistence levels if the land was farmed using sharecropping, as in Africa Proconsularis in the 2nd century AD, in which case a third of the total crop goes to the landowner as rent (See Lex Manciana).
Such figures detail only the subsistence level. It is clear that large scale surplus production was undertaken in some provinces, such as to supply the annona with grain.
For yields of wheat, the number varies depending on the ancient source. Varro mentions 10:1 seed-yield ratio for wheat as normal for wealthy landowners. In some areas of Etruria, yield may have been as high as 15:1. Cicero indicates In Verrem a yield of 8:1 as normal, and 10:1 in exceptionally good harvest. Paul Erdkamp mentions in his book The Grain Market in the Roman Empire, that Columella was probably biased when he mentions a much lower yield of 4:1. According to Erdkamp, Columella wanted to make the point that "grain offers little profit compared to wine. His argument induces him to exaggerate the profitability of vineyards and at the same time to diminish the yields that were obtained in grain cultivation. At best Columella provides a trustworthy figure for poor soils; at worst, his estimate is not reliable at all."[page needed]
Egypt was also important in providing wheat to Rome. Normally, shipments of Egyptian wheat may have amounted to 20 million modii or more annually. This number can be found in the Epitome de Caesaribus. Twenty million modii of wheat was enough for half or two thirds of Rome.
Pliny the Younger painted a picture that Rome was able to survive without Egyptian wheat in his speech the Panegyricus in 100 AD. In 99 there was an Egyptian crisis due to inadequate flooding.
Pliny the Younger stated that for "long it was generally believed that Rome could only be fed and maintained with Egyptian aid". However, he argued that "Now [that] we have returned the Nile its riches... her business is not to allow us food but to pay a proper tribute.
The Romans improved crop growing by watering growing plants using aqueducts and there is an increasing amount of evidence that some parts of the industry were mechanised. For example, extensive sets of mills existed in Gaul and Rome at an early date to grind corn into flour. The most impressive extant remains occur at Barbegal in southern France, near Arles. Sixteen overshot water wheels arranged in two columns were fed by the main aqueduct to Arles, the outflow from one being the supply to the next one down in the series. The mills apparently operated from the end of the 1st century AD until about the end of the 3rd century. The capacity of the mills has been estimated at 4.5 tons of flour per day, sufficient to supply enough bread for the 12,500 inhabitants occupying the town of Arelate at that time.
Vertical water wheels were well known to the Romans, described by Vitruvius in his De Architectura of 25 BC, and mentioned by Pliny the Elder in his Naturalis Historia of AD 77. There are also later references to floating water mills from Byzantium and to sawmills on the river Moselle by the poet Ausonius. The use of multiple stacked sequences of reverse overshot water-wheels was widespread in Roman mines.
There is direct evidence from bas-reliefs that they also used a kind of automatic harvester or reaper when collecting in ripe crops. It is believed that either Romans or the Celts before them, invented the mechanical reaper that cut the ears without the straw and was pushed by oxen. Pliny the Elder mentions the device in the Naturalis Historia XVIII, 296. The machine was forgotten in the Dark Ages, during which period reapers reverted to using scythes and sickles to gather crops.
Acquiring a farm 
Aristocrats and common people could acquire land for a farm in one of three ways. The most common way to gain land was to purchase the land. Though some lower class citizens did own small pieces of land, they often found it too difficult and expensive to maintain. Because of the many difficulties of owning land, they would sell it to someone in the aristocracy who had the financial backing to support a farm. Though there were some public lands available to the common person for use, aristocrats also tended to purchase those pieces of land, which caused a great deal of tension between the two classes. “Mass eviction of the poor by the rich underlay the political tensions and civil wars of the last century of the Roman Republic.” Another way to acquire land was as a reward for going to war. High ranking soldiers returning from war would often be given small pieces of public land or land in provinces as a way of paying them for their services. The last way to obtain land was through inheritance. A father could leave his land to his family, usually to his son, in the event of his death. Wills were drawn out that specified who would receive the land as a way of ensuring that other citizens did not try to take the land from the family of the deceased.
Aristocracy and the land 
Though some small farms were owned by lower class citizens and soldiers, much of the land was controlled by the noble class of Rome. Land ownership was just one of many distinctions that set the aristocracy apart from the lower classes. Aristocracy would "reorganize small holdings into larger more profitable farms in order to compete with other nobles." It was considered a point of pride to own not just the largest piece of land, but also to have land that grew high quality produce. As Marcus Cato wrote "when they would praise a worthy man their praise took this form: 'Good husband good farmer'; it is from the farming class that the bravest men and the sturdiest soldiers come." The farms would produce a variety of crops depending on the season, and focused on trying to acquire the best possible farm under the best possible conditions. Cato discusses many of the primary focuses of the farmer and how to distinguish a great piece of land. He notes that a good farmer must take precious time to examine the land, looking over every detail. Not only did the land need to be perfect for purchase, but the neighbors must maintain their farms as well because "if the district was good, they should be well kept." Individuals looking to buy a piece of land had to also take into consideration the weather of the area, the condition of the soil, and how close the farm would be to a town or port. Careful planning went into every detail of owning and maintaining a farm in Roman culture.
Running a farm in Rome 
While the aristocracy owned most of the land in Rome, they oftentimes were not present at the farms. With obligations as senators, generals, and soldiers at war, many of the actual landowners spent very little time working on their farms. The farms instead were maintained by slaves and freedmen paid to oversee those slaves. The overseer of the farm had many responsibilities that coincided with maintaining the land. He was responsible for ensuring that the slaves were kept busy and for resolving conflicts between them. An overseer had to be dependable and trustworthy in that the land owner had to know that the person they hired to run the farm was not going to try and steal any of the produce from the farm. Overseers were also responsible for ensuring that both servants and slaves were properly fed and housed, and that they were assigned work fairly and efficiently. They had to ensure that any orders given by the owner of the land were followed diligently and that everyone on the farm honored the gods completely and respectfully, which Romans believed was necessary to ensure a bountiful harvest. Good inscription evidence of how the system was organized is visible in the Lex Manciana
The majority of the work was done by servants and slaves. Slaves were the main source of labor. In Roman society, there were three main ways to obtain a slave. The first and possibly most common way to gain a slave was to buy one on the market. Slaves were purchased at auctions and slaves markets from dealers or were traded between individual slave owners. Another way slaves were acquired was through conquest in warfare. As Keith Hopkins explains in his writings, many landowners would go to war and bring back captives. These captives were then taken back to Roman territory and either sold to another citizen or made to work on the capturer's farm. The final way a slave could be obtained was through birth: if a female slave gave birth to a child, that child became property of the slave's owner. Slaves were relatively cheap to use because they were property; their treatment depended on the humanity of their owners, who met the needs of their slaves on what they cared to spend, not what they had to. Overseers motivated slaves by imposing punishments and by giving rewards. "If the overseer sets his face against wrongdoing, they will not do it; if he allows it, the master must not let him go unpunished." Although outright cruelty to slaves was considered a mark of bad character in Roman culture, there were few limits on the punishments an overseer or slave-owner could inflict.
Problems for farmers 
Roman farmers faced many of the problems which have historically affected farmers up until modern times including the unpredictability of weather, rainfall, and pests. Farmers also had to be wary of purchasing land too far away from a city or port because of war and land conflicts. As Rome was a vast empire that conquered many lands, it created enemies with individuals whose land had been taken. They would often lose their farms to the invaders who would take over and try to run the farms themselves. Though Roman soldiers would oftentimes come to the aid of the farmers and try and regain the land, these fights often resulted in damaged or destroyed property. Land owners also faced problems with slave rebellions at times. "In addition to invasions by Carthaginians and Celtic tribes, slaves rebellions and civil wars which were repeatedly fought on Italian soil all contributed to the destruction of traditional agricultural holdings. (pg. 4) Also, as Rome's agriculture declined, people now judged others by their wealth rather than their character."[page needed]
See also 
- Agriculture in ancient Greece
- History of Agriculture
- Roman technology
- Deforestation during the Roman period
- Grain supply to the city of Rome
- Pro Roscio Amerino 75.
- Cato the Censor, Columbia University Records of Civilization: On Farming, translated by Ernest Brehaut (Columbia University Press)
- Hopkins (1978). Conquerors and Slaves. New York: Cambridge University Press. pp. 1–9. ISBN 0521219450.
- Howatson, M. C. (1989). The Oxford Companion to Classical Literature. Oxford University Press. pp. 17–19. ISBN 0198661215.
- White, K. D. (1970). Roman Farming. Cornell University Press. ISBN 0801405750.
- Cornell, Tim (1982). Atlas of the Roman World. Facts on File. p. 55.
- Lucius Junius Moderatus Columella, On Agriculture (Res Rustica), (Loeb Classical Library), Book II, p. 145
- Henderson, John (2004). Roman Book of Gardening. London: Routledge. pp. 40–65. ISBN 0415324491.
- Kehoe, D. (1988). Economics of Agriculture on Roman Imperial Estates in North Africa. Göttingen: Vandenhoeck & Ruprecht. ISBN 3525251882.
- Green, C. M. C. (1997). "Free as a Bird: Varro de re Rustica 3". American Journal of Philology 118 (3): 427–448. doi:10.1353/ajp.1997.0040.
- Erdkamp, P. (2005). The Grain Market In The Roman Empire: A Social, Political And Economic Study. Cambridge University Press. ISBN 0521838789.
- Erdkamp, Paul (2005). The Grain Market in the Roman Empire. Cambridge University Press. pp. 42–44, 49, 243, quote on page 228. ISBN 0521838789.
- Ville d'Histoire et de Patrimoine
- La meunerie de Barbegal
- Marcus Cato, On Agriculture, 1-2,5
- Finley, M. I. (1973). The Ancient Economy. Berkeley: University of California. p. 62. ISBN 0520024362. "a slave is property, subject to the rules and procedures of property, with respect to sale, lease, theft, natural increase and so on."
Further reading 
KD White's Roman Farming compiles information from Roman authors and addresses all aspects of Roman agriculture using detailed charts of soils, agricultural terms, animal husbandry in Rome, and a description of crop rotation systems. KD White's book Farm Equipment of the Roman World includes diagrams of Roman farming equipment. Paul Erdkamp's The Grain Market in the Roman Empire describes farming economics and ancient marketing.
- Buck, Robert (1983), Agriculture and Agricultural Practice in Roman Law, (Franz Steiner Verlag Gmbh Wiesbaden)
- Erdkamp, Paul (2005), The Grain Market in the Roman Empire, (Cambridge University Press)
- Cato the Censor (1933), Columbia University Records of Civilization: On Farming, translated by Ernest Brehaut (Columbia University Press)
- Hopkins, Keith (1978) "Conquerors and Slaves, pgs 1-9.
- Lucius Junius Moderatus Columella, On Agriculture (Res Rustica), (Loeb Classical Library)
- White, KD (1970), Roman Farming (Cornell University Press)
- White, KD (1975), Farm Equipment of the Roman World (Cambridge University Press)
- Cato the Elder's De Agri Cultura (on Agriculture) in Latin and English
- Columella's Res Rustica in Latin Complete text in Latin at The Latin Library
- Columella's Res Rustica in English Books I‑IV in English translation at LacusCurtius
- Latin text of Varro Rerum Rusticarum de Agri Cultura
- Pliny the Elder's Natural History