"We will now take up the second consideration in respect of the physical characteristics of a farm, namely: the quality of the soil, which partly, if not entirely, determines whether it is considered a good or a bad farm: for on this depends what crops can be planted and harvested and how they should be cultivated, as it is not possible to plant everything successfully on the same soil. For one soil is suitable for vines, another for corn, and others for other things. In the island of Crete, near Cortynia, there is said to be a plane tree which does not lose its leaves even in winter—a phenomenon due doubtless to the quality of the soil. There is another of the same kind in Cyprus, according to Theophrastus. Likewise within sight of the city of Sybaris (which is now called Thurii) stands an oak having the same characteristic. Again at Elephantine neither the vines nor the fig trees lose their leaves, something that never happens with us. For the same reason many trees bear fruit twice a year, as do the vines near the sea at Smyrna, and the apples in the fields of Consentinium. The effect of soil appears also from the fact that those plants which bear most profusely in wild places produce better fruit under cultivation. The same explanation applies to those plants which cannot live except in a marshy place, or indeed in the very water: they are even nice about the kind of water, some grow in ponds like the reeds at Reate, others in streams like the alders in Epirus, some even in the sea like the palms and the squills of which Theophrastus writes. When I was in the army, I saw in Transalpine Gaul, near the Rhine, lands where neither the vine, nor the olive, nor the pear tree grew, where they manured their fields with a white chalk which they dug out of the ground:[62] where they had no salt, either mineral or marine, but used in place of it the salty ashes obtained from burning a certain kind of wood."
Stolo here interrupted. "You will recall," he said, "that Cato in comparing the different kinds of soil, ranked them by their merit in nine classes according to what they would produce, of which the first was that on which the vine would grow a plentiful supply of good wine; the second that fit for an irrigated garden; the third for an osier bed; the fourth for an olive yard; the fifth for a meadow; the sixth for a corn field; the seventh for a wood lot; the eighth for a cultivated orchard, and the ninth for a mast grove."
"I know he wrote that," replied Scrofa, "but every one does not agree with him. There are some who put a good pasture first, and I am among them."
Our ancestors were wont to call them not prala, as we do, but parata (because they are always ready for use). The sedile Caesar Vopicus, in pleading a cause before the Censors, once said that the prairie of Rosea was the nurse of Italy, because if one left his surveying instruments there on the ground over night they were lost next day in the growth of the grass.[63]
(A digression on the maintenance of vineyards)
VIII. There be those who assert that the cost of maintaining a vineyard eats up the profit. What kind of vineyard? I ask. For there are several: in one the vines grow on the ground without props, as in Spain; in another, which is the kind common in Italy, the vines climb and are trained either separately on props or one with another on a trellis, which last is what is called marrying the vine. There are four kinds of trellis in use—made out of poles, of reeds, of ropes and of vines themselves, which are in use respectively in Falerum, in Arpinum, in Brundisium and in Mediolanum. There are two methods of training the vine on trellises, one upright, as is done in the country of Canusium; the other crossed and interwoven, as is the practice generally throughout Italy. If one obtains the material for his trellises from his own land, the expense of maintaining that kind of vineyard is negligible, nor is it burdensome if the material is procured from the neighbourhood. Such trellis material, as has been described, can be grown at home by planting willows, reeds and rushes, or some thing of that kind; but if you propose to rely on the vines to form their own trellis, then you must plant an arbustum where the vines can be trained on trees, such as maples, which the inhabitants of Mediolanum use for that purpose; or fig trees, on which the people of Canusium train their vines. Likewise there are four kinds of props used for the cultivation of unwedded vines; first, the planted post, which is called ridicum and is best when fashioned out of oak or juniper; second, poles cut in the swamp, and the more seasoned they are the longer they will last, but it is the practice to reset them upside down when they rot out in the ground; third, for lack of some thing better, a bundle of reeds tied together and thrust into a pointed tube of baked clay, which is then planted in the ground and serves to preserve the reeds from water rot; the fourth is what may be called the natural prop, when vines are swung from tree to tree. Vines should be trained to the height of a man and the interval between the props should be sufficient to give room for a yoke of oxen to plough. The least expensive kind of a vineyard is that which brings wine to the jug without the aid of any sort of prop. There are two of this kind, one in which the earth serves as a bed for the grapes, as in many places in Asia, and where usually the foxes share the crop with man;[64] or, if mice appear, it is they who make the vintage, unless you put a mouse trap in every vine, as they do on the island of Pandataria. The other kind of vineyard, is that where each shoot which promises to bear grapes is lifted from the earth and supported about two feet off the ground by a forked stick: by this means the grapes, as they form, learn to hang as it were from a branch and do not have to be taught after the vintage; they are held in place with a bit of cord or by that kind of tie which the ancients called a cestus. As soon as the farmer sees the vintagers turn their backs he carries these props under cover for the winter so that he may use them another year without expense for that account. In Italy the people of Reate practise this custom.
Thus there are as many methods of cultivating the vine as there are kinds of soil. For where the land is wet the vine must be trained high because when wine is being made and matured on the vine, it needs sun, not water—as when it is in the cup! For this reason it was, I think, that first the vine was made to grow on trees.
Of the different kinds of soil
IX. It is expedient then, as I was saying, to study each kind of soil to determine for what it is, and for what it is not, suitable. The word terra is used in three senses: general, particular and mixed. It is a general designation when we speak of the orb of the earth, the land of Italy or any other country. In this designation is included rock and sand and other such things. In the second place, terra is referred to particularly when it is spoken of without qualification or epithet. In the third place, which is the mixed sense, when one speaks of terra as soil—that in which seeds are sown and developed; as for example, clay soil or rocky soil or others. In this sense there are as many kinds of earth as there are when one speaks of it in the general sense, on account of the mixtures of substances in it in varying quantities which make it of different heart and strength, such as rock, marble, sand, loam, clay, red ochre, dust, chalk, gravel, carbuncle (which is a condition of soil formed by the burning of roots in the intense heat of the sun); from which each kind of soil is called by a particular name, in accordance with the substances of which it is composed, as a chalky soil, a gravelly soil, or what ever else may be its distinguishing quality. And as there are different varieties of soil so each variety may be subdivided according to its quality, as, for example, a rocky soil is either very rocky, moderately rocky or hardly rocky at all. So three grades may be made of other mixed soils. In turn each of these three grades has three qualities: some are very wet, some very dry, some moderate, These distinctions are of the greatest importance in respect of the crops, for the skilled husbandman plants spelt rather than wheat in wet land, and on dry land barley rather than spelt, in medium land both. Furthermore there are still more subtle distinctions to be made in respect of all these kinds of soil, as for example it must be considered in respect of loam, whether it is white loam or red loam, because white loam is unfit for nursery beds, while red loam is what they require. But the three great distinctions of quality of soil are whether it is lean or fat, or medium. Fat soils are apparent from the heavy growth of their vegetation, and the lean lie bare; as witness the territory of Pupinia (in Latium), where all the foliage is meagre and the vines look starved, where the scant straw never stools, nor the fig tree blooms, while for the most part the trees are as covered with moss as are the arid pastures. On the other hand, a rich soil like that of Etruria reveals itself heavy with grain and forage crops and its umbrageous trees are clean of moss. Soil of medium strength, like that near Tibur, which one might say is rather hungry than starved, repays cultivation in proportion as it takes on the quality of rich land."
"Diophanes of Bithynia," said Stolo, "was very much to the point when he wrote that the best indication of the suitability of soil for cultivation can be had either from the soil itself or from what grows in it: so one should ascertain whether it is white or black, if it is light and friable when it is dug, whether its consistency is ashy, or too heavy: or it can be tested by evidence that the wild growth upon it is heavy and fruitful after its kind.[65] But proceed and tell us of your third division, which relates to the measurement and laying out of the farm."