Part 5

[25] As for puffy Land, which naturally swells up, instead of subsiding, tho’ its Hollowness is much abated by Tillage, yet it is thought little better than barren Land, and unprofitable for Corn: But what we usually call Light-land, is only comparatively so, in Respect of that which is heavier and stronger. And this Sort of Light land becomes much lighter by being ill-till’d; the unbroken Pieces of Turf underneath undissolved, forming large Cavities, increase its Hollowness, and consequently its Lightness: I have often known this Sort of Land despis’d by its Owners, who fear’d to give it due Tillage, which they thought would make it so light, that the Wind would blow it away; but whenever such has been thoroughly till’d, it never fail’d to become much stronger than before; and considering that ’tis till’d with less Expence than very strong Land, it is, for several Sorts of Corn, found to be more profitable than Land of greater Strength and Richness, that is more difficult to be till’d.

And I am apt to think, that this Sort of Light-land acquires more Cement, by having its _external_ Superficies often changed, and exposed to the Dews, and other Benefits of the Atmosphere, as well as by the Increase of (its _internal_ Superficies, which is the Surfaces of all the divided Parts of Earth, or) the Pasture of Plants; the one being augmented by the other; _i. e._, that into the more Parts the Earth is broken, the more Cement will it attain, from the Sulphur, which is brought by the Dews.

Artificial Pores cannot be too small, because Roots may the more easily enter the Soil that has them, quite contrary to natural Pores; for these may be, and generally are, too small, and too hard for the Entrance of all weak Roots, and for the free Entrance of strong Roots.

Insufficient Tillage leaves strong Land with its natural Pores too small, and its artificial ones too large. It leaves Light-land, with its natural and artificial Pores both too large.

Pores that are too small in hard Ground, will not easily permit Roots to enter them.

Pores that are too large in any Sort of Land, can be of little other Use to Roots, but only to give them Passage to other Cavities more proper for them; and if in any Place they lie open to the Air, they are dry’d up, and spoil’d, before they reach them.

For fibrous Roots (which alone maintain the Plant; the other Roots serve for receiving the Chyle from them, and convey it to the Stem) can take in no Nourishment from any Cavity, unless they come into Contact with[26], and press against, all the Superficies of that Cavity, which includes them; for it dispenses the Food to their Lacteals by such Pressure only: But a fibrous Root is not so press’d by the Superficies of a Cavity whose Diameter is greater than that of the Root.

[26] Roots cannot have any Nourishment from Cavities of the Earth that are too large to press against them, except what Water, when ’tis in great Quantity, brings to them, which is imbibed by the gentle Pressure of the Water; but when the Water is gone, those large Cavities being empty, the Pressure ceases; and this is the Reason, that when Land has few other but such large Cavities, the Plants in it always suffer more by dry Weather, than in Land which by Dung or Tillage has more minute and fewer large Cavities.

There may be some Moisture on the Superficies of large Cavities; but without Pressure the fibrous Roots cannot reach it; and very little or no Pressure can be made to one Part of the Root’s Superficies, unless the Whole that is included be pressed.

If it be objected that a Charlock-Plant, when pulled up, and thrown upon the Ground, will grow thereon; this proves nothing against the Necessity of Pressure, _&c._ for the Weight of that Plant presses some of its Roots so closely against the Ground, that they send out (unless the Weather be very dry) new Fibres into the Earth; and there they are pressed in all their Superficies; without which Fibres the Plant doth not grow.

The Surfaces of great Clods form Declivities on every Side of them, and large Cavities, which are as Sinks to convey, what Rain and Dew bring, too quickly downwards to below the plow’d Part.

The first and second Plowings with common Ploughs scarce deserve the Name of Tillage; they rather serve to prepare the Land for Tillage.

The third, fourth, and every subsequent Plowing, may be of more Benefit, and less Expence, than any of the preceding ones.

But the last Plowings will be more advantageously perform’d by Way of Hoeing, as in the following Chapters will appear.

For the finer Land is made by Tillage, the richer will it become, and the more Plants it will maintain.

It has been often observ’d, that when Part of a Ground has been better till’d than the rest, and the whole Ground constantly manag’d alike afterwards for six or seven Years successively; this Part that was but once better till’d, always produc’d a better Crop than the rest, and the Difference remain’d very visible every Harvest.

One Part being once made finer, the Dews did more enrich it; for they penetrate within and beyond the Superficies, whereto the Roots are able to enter: The fine Parts of the Earth are impregnate, throughout their whole Substance, with some of the Riches carried in by the Dews, and there reposited; until, by new Tillage, the Insides of those fine Parts become Superficies; and as the Corn drains them, they are again supply’d as before; but the rough large Parts cannot have that Benefit; the Dews not penetrating to their Centres, they remain poorer.

I think nothing can be said more strongly to confirm the Truth of this, than what is related by the Authors quoted by Mr. _Evelyn_[27], to this Effect, _viz._

[27] In Pag. 17, 18, and 19, of his _Phil. Discourse of Earth_.

‘Take of the most barren Earth you can find, pulverize it well, and expose it abroad for a Year, incessantly agitated[28]; it will become so fertile as to receive an exotic Plant from the furthest _Indies_; and to cause all Vegetables to prosper in the most exalted Degree, and to bear their Fruit as kindly with us as in their natural Climates.’

[28] _i. e._ Stirr’d often.

This artificial Dust[29], he says, will entertain Plants which refuse Dung, and other violent Applications; and that it has a more nutritive Power than any artificial Dungs or Compost whatsoever: And further, that by this Toil of pulverizing, “’tis found, that Soil may be so strangely alter’d from its former Nature, as to render the harm and most uncivil Clay[30] obsequious to the Husbandmen, and to bring forth Roots and Plants, which otherwise require the lighted and hollowest Mould[31].”

[29] Tho’ it may be impossible for the Plough to reduce the whole Staple into so fine Powder, yet the more internal Superficies it makes, the more Dust will be made by the Atmosphere in Proportion; and great Clods perhaps are of no Use to Plants, but by that Dust they let fall, being thence extricated by the insensible Ferment of the nitrous Air; and the Surfaces of this artificial Dust must receive such Operations from the Air, before the utmost Fertility be obtain’d.

[30] But I take harsh uncivil Clay to be the least profitable of any to keep in Tillage.

[31] To this Dust, _Namque hoc imitamur arando_ ought to be apply’d, and not to _Putre Solum_, which itself needs Tillage, as well as strong Land: But it seems the Antients did not observe the Difference between natural Pores (or Hollowness) and artificial ones, tho’ it is very great; as is shewn in Chap. of _Pasture of Plants_: ’Tis easier indeed to imitate this artificial Dust in _hollow_ than in _strong_ Land.

’Tis to be suppos’d, that the _Indian_ Plants had their due Degrees of Heat and Moisture given them; and I should not chuse to bestow this Toil upon the poorest of Earth in a Field or Garden, tho’ that be the most sure wherein to make the Experiment[32].

[32] This is the most proper Trial of the Effect of Pulveration by _pounding_ and _grinding_; but Land may be so barren, that Plough or Spade may not be sufficient to pulverize it to that Degree, which is necessary to give it the same Fertility, that Pounding in a Mortar, or grinding betwixt Marbles (as Colours are ground), can.

I never myself try’d this way of pounding or grinding, because impracticable in the Fields.

But I have had the Experience of a Multitude of Instances, which confirm it so far, that I am in no Doubt, that any Soil[33] (be it rich or poor) can ever be made too fine by Tillage[34].

[33] Land that is too hollow and light, having no Cement to join its Parts together, tho’ in Nature they are capable of infinite Division, yet in Practice the Plough cannot divide them to any Purpose, unless they were first join’d, but glides through without breaking them; being more like to the primary Particles of Water against the Plough, which are broken by no Force, than to Earth; it may be moved, but not broken by Tillage, and therefore ought not to be reputed arable; nor does it indeed deserve the Name of Land, but as the desart Sands of _Lybia_, to distinguish it from Sea.

[34] According to some, this Rule is only general, and not universal; for, say they, there’s a Sort of binding Gravel, that, when it is made _fine_, will, by a sudden Dash of Rain, run together like a Metal; and I have seen the same Accident in a particular Sort of _white_ Land; but this very rarely happens to the latter: I never knew it above once, and that was after Barley was sown on it; the Hardness was only like a very thin Ice upon the Surface, which was some Hindrance to the coming up of the Barley, until the Harrow’s going over it once or twice broke that Ice or Crust, and then it came up very well.

I never had any other Sort of Land liable to this Misfortune: therefore can say nothing to the Gravel in that Case, nor how deep the _Constipation_ may reach in it, nor what Remedy is most proper to prevent the ill Consequence of it: But if there should be two or three Exceptions out of _One thousand Seventy-nine Millions One thousand and Sixty different Sorts of_ Earth (_see Mr. Evelyn’s Terra_, p. 2), ’twill be no great Matter.

But I think these are no real Exceptions against any Degree of _Pulverizing_; for it only shews, that some Sorts of Land, tho’ very few, are subject by Accident to lose too soon their Pulveration: And if the Fineness were no Benefit to that Land, such Loss of it would be no Injury to it.

For ’tis without Dispute, that one cubical Foot of this minute Powder may have more internal Superficies, than a thousand cubical Feet of the same, or any other Earth till’d in the common Manner; and, I believe no two arable Earths in the World do exceed one another in their natural Richness Twenty Times; that is, one cubical Foot of the richest is not able to produce an equal Quantity of Vegetables, _cæteris paribus_, to Twenty cubical Feet of the poorest; therefore ’tis not strange, that the poorest, when by pulverizing it has obtain’d One hundred Times the internal Superficies of the rich untill’d Land, it should exceed it in Fertility; or, if a Foot of the poorest was made to have Twenty Times the Superficies of a Foot of such rich Land, the poorest might produce an equal Quantity of Vegetables with the rich[35]. Besides, there is another extraordinary Advantage, when a Soil has a larger internal Superficies in a very little Compass; for then the Roots of Plants in it are better supply’d with Nourishment, being nearer to them on all Sides within Reach, than it can be when the Soil is less fine, as in common Tillage; and the Roots in the one must extend much further than in the other, to reach an equal Quantity of Nourishment: They must range and fill perhaps above twenty Times more Space to collect the same Quantity of Food.

[35] And very poor Land, well pulveriz’d, will produce better Corn than very rich will do, without Manure or Tillage. The Experiment may be made by paring off the Turf, and setting Corn in the whole Ground that is very rich; and that will shew how much the natural Pasture of the rich is inferior to the artificial Pasture of the poor Land; but then the _poor_ must have this Proportion of Excess of internal Superficies continued to it, during the whole Time of their Growth, which cannot be done without frequently repeated Divisions of the Soil by Hoeing or Manure; else it might require forty Times the internal Superficies at the Time of Sowing, to keep twenty Times the internal Superficies of the _rich_ till Harvest: For although the rich is continually losing some of its artificial Pasture, as well as the _poor_, yet by losing this equally, they still draw nearer and nearer to the first Inequality of their natural Pasture.

But _poor_ Land, being lighter, has this Advantage, that it being more _friable_ than the strong, requires less Labour to pulverize it; and therefore the Expence of it is much less, than in proportion to the Excess of Poorness of its internal Superficies.

But in this fine Soil, the most weak and tender Roots have free Passage to the utmost of their Extent, and have also an easy, due, and equal Pressure every-where, as in Water.

Hard Ground makes a too great Resistance, as Air makes a too little Resistance, to the Superficies of Roots.

Farmers, just when they have brought their Land into a Condition fit to be further till’d to much greater Advantage, leave off, supposing the Soil to be fine enough, when, with the Help of Harrows, they can cover the Seed; and afterwards with a Roller they break the Clods; to the End that, if a Crop succeed, they may be able to mow it, without being hinder’d by those Clods: By what I could ever find, this Instrument, call’d a Roller, is seldom beneficial to good Husbands; it rather untills the Land, and anticipates the subsiding of the Ground, which in strong Land happens too soon of itself[36].

[36] This Injury the Roller does, is only when tis used to press down the Earth after the Seed is sown; and is the greater, if Land be moist; but the Rolling of it in dry Weather, when ’tis to be immediately plow’d up again, is the most speedy Way to pulverize the Soil; and the Harrow is then very useful in pulling up the Clods, to the End that the Roller may the better come at them to crush them.

But more to blame are they, who neglect to give their Land due Plowing, trusting to the Harrow to make it fine; and when they have thrown in their Seed, go over it twenty Times with the Harrows[37] till the Horses have trodden it almost as hard as a Highway, which in moist Weather spoils the Crop; but on the contrary, the very Horses, when the Earth is moist, ought all to tread in the Furrows only, as in plowing with a Hoe-Plough they always do, when they use it instead of a common Plough.

[37] _Nam veteres Romani dixerunt male subactum Agrum, qui satis Frugibus occandus sit._

_Sed ut compluribus Iterationibus sic resolvatur vervactum in Pulverem, ut nullam vel exiguam desideret Occationem, cum seminaverimus. Col._ Lib. 2. Cap. 4.

CHAP. VI.

_Of_ HOEING.

Hoeing is the breaking or dividing the Soil by Tillage, whilst the Corn or other Plants are growing thereon.

It differs from common Tillage (which is always perform’d before the Corn or Plants are sown or planted) in the Times of performing it; ’tis much more beneficial; and ’tis perform’d by different Instruments.

Land that is before Sowing tilled never so much (tho’ the more ’tis till’d the more it will produce) will have some Weeds, and they will come in along with the Crop for a Share of the Benefit of the Tillage, greater or less, according to their Number, and what Species they are of.

But what is most to be regarded is, that as soon as the Ploughman has done his Work of plowing and harrowing, the Soil begins to undo it, inclining towards, and endeavouring to regain, its natural specific Gravity; the broken Parts by little and little coalesce, unite, and lose some of their Surfaces; many of their Pores and Interstices close up during the Seed’s Incubation and Hatching in the Ground; and, as the Plants grow up, they require an Increase of Food proportionable to their increasing Bulk; but on the contrary, instead thereof, that internal Superficies, which is their artificial Pasture, gradually decreases.

The Earth is so unjust to Plants, her own Off-spring, as to shut up her Stores in proportion to their Wants; that is, to give them less Nourishment when they have need of more: Therefore Man, for whose Use they are chiefly design’d, ought to bring in his reasonable Aid for their Relief, and force open her Magazines with the Hoe, which will thence procure them at all times Provisions in Abundance, and also free them from Intruders; I mean, their spurious Kindred, the Weeds, that robb’d them of their too scanty Allowance.

There’s no Doubt, but that one third Part of the Nourishment raised by Dung and Tillage, given to Plants or Corn at many proper Seasons, and apportion’d to the different Times of their Exigencies, will be of more Benefit to a Crop, than the Whole apply’d, as it commonly is, only at the time of Sowing. This old Method is almost as unreasonable as if Treble the full Stock of Leaves, necessary to maintain Silk-worms till they had finished their Spinning, should be given them before they are hatched, and no more afterwards.

Next to Hoeing, and something like it, is Transplanting, but much inferior; both because it requires a so much greater Number of Hands, that by no Contrivance can it ever become general, nor does it succeed, if often repeated; but Hoeing will maintain any Plant in the greatest Vigour ’tis capable of, even unto the utmost Period of Age. Besides, there is Danger in removing a whole Plant, and Loss of Time before the Plant can take Root again, all the former Roots being broken off at the Ends in taking up (for ’tis impossible to do it without), and so must wait until by the Strength and Virtue of its own Sap (which by a continual Perspiration is daily enfeebled) new Roots are form’d, which, unless the Earth continue moist[38], are so long in forming, that they not only find a more difficult Reception into the closing Pores; but many Times the Plant languishes and dies of an Atrophy, being starv’d in the midst of Plenty; but whilst this is thus decaying, the hoed Plant obtains a more flourishing State than ever, without removing from the same Soil that produc’d it.

[38] But when the Earth doth continue moist, many transplanted Vegetables thrive better than the same Species planted in Seeds, because the former, striking Root sooner, have a greater Advantage of the fresh-pulverized Mould, which loses some of its artificial Pasture before the Seeds have Roots to reach it. The same Advantage also have Seeds by soaking till ready to sprout before they are planted. To both these the Moisture of the Earth is necessary.

’Tis observ’d that some Plants are the worse for Transplanting[39]. _Fenochia_ removed is never so good and tender as that which is not, it receives such a Check in Transplanting in its Infancy; which, like the Rickets, leaves Knots that indurate the Parts of the Fennel, and spoil it from being a Dainty.

[39] As most long Tap-rooted Plants are; for I have often try’d the Transplanting of Plants, of _St. Foin_ and _Luserne_; and could never find, that any ever came near to the Perfection that those will do which are not removed, being equally single.

Tap-rooted Grasses and Turneps are always injured by Transplanting; their long Root once broken off never arrives at the Depth it would have arriv’d unbroken; as for this Reason they cut off the Tap-root of an Apple-tree, to prevent its running downward, by which it would have too much Moisture.

Hoeing has most of the Benefits without any Inconveniences of Transplanting; because it removes the Roots by little and little, and at different Times; some of the Roots remaining undisturb’d, always supply the moved Roots with Moisture, and the whole Plant with Nourishment sufficient to keep it from fainting, until the moved Roots can enjoy the Benefit of their new Pasture, which is very soon.

Another extraordinary Benefit of the new Hoeing[40] Husbandry is, that it keeps Plants moist in dry Weather, and this upon a double Account.

[40] Hoeing may be divided into Deep, which is our Horse-hoeing, and Shallow, which is the English Hand-hoeing; and also the Shallow Horse-hoeing, used in some Places betwixt Rows, where the Intervals are very narrow, as sixteen or eighteen Inches; this is but an Imitation of the Hand-hoe, or a _Succadaneum_ to it; and can neither supply the Use of Dung, nor of Fallow, and may be properly called Scratch-hoeing.

First, as they are better nourished by Hoeing, they require less Moisture, as appears by Dr. _Woodward_’s Experiment, that those Plants which receive the greatest Increase, having most terrestrial Nourishment, carry off the least Water in Proportion to their Augment: So Barley or Oats, being sown on a Part of a Ground very well divided by Dung and Tillage, will come up and grow vigorously without Rain, when the same Grains, sown at the same Time, on the other Part, not thus enriched, will scarce come up; or, if they do, will not thrive till Rain comes.

Secondly, The Hoe, I mean the Horse-hoe (the other goes not deep enough), procures Moisture to the Roots from the Dews, which fall most in dry Weather; and those Dews (by what Mr. _Thomas Henshaw_ has observ’d) seem to be the richest Present the Atmosphere gives to the Earth; having, when putrefy’d in a Vessel, a black Sediment like Mud at the Bottom. This seems to cause the darkish Colour to the upper Part of the Ground. And the Sulphur, which is found in the Sediment of the Dew, may be the chief Ingredient of the Cement of the Earth; Sulphur being very glutinous, as Nitre is dissolvent. Dew has both these.

These enter in proportion to the Fineness and Freshness of the Soil, and to the Quantity that is so made fine and fresh by the Hoe. How this comes to pass, and the Reason of it, are shewn in the Chapter of Tillage.

To demonstrate that Dews moisten the Land when fine, dig a Hole in the hard dry Ground, in the driest Weather, as deep as the Plough ought to reach: Beat the Earth very fine, and fill the Hole therewith; and, after a few Nights Dews, you’ll find this fine Earth become moist at the Bottom, and the hard Ground all round will continue dry.

Till a Field in Lands; make one Land very fine by frequent deep Plowings; and let another be rough by insufficient Tillage, alternately; then plow the whole Field cross-ways in the driest Weather, which has continued long; and you will perceive, by the Colour of the Earth, that every fine Land will be turn’d up moist; but every rough Land will be dry as Powder, from Top to Bottom.

Altho’ hard Ground, when thoroughly soak’d with Rain, will continue wet longer than fine till’d Land adjoining to it; yet this Water serves rather to chill, than nourish the Plants standing therein, and to keep out the other Benefits of the Atmosphere, leaving the Ground still harder when ’tis thence exhaled; and being at last once become dry, it can admit no more Moisture, unless from a long-continued Deluge of Rain, which seldom falls till Winter, which is not the Season for Vegetation.

As fine hoed Ground is not so long soaked by Rain, so the Dews never suffer it to become perfectly dry: This appears by the Plants, which flourish and grow fat in this, whilst those in the hard Ground are starved, except such of them, which stand near enough to the hoed[41] Earth, for the Roots to borrow Moisture and Nourishment from it.