What is "unmanured"

Usage examples of "unmanured".

The near approach, again, to identity of result from the two unmanured plots, at once gives confidence in the accuracy of the experiments, and shows us how effectually the preceding crop had, in a practical point of view, reduced the plots, previously so differently circumstanced both as to manure and produce, to something like an uniform standard as regards their grain-producing qualities.

The plot continuously unmanured, gives about 16 bushels of wheat per acre.

And in this unfavorable season of 1860, he gets on his three unmanured plots an average of 730 lbs.

In this case, two million hundredweight of guano would add six million six hundred and sixty-six thousand six hundred and sixty tons to the natural unmanured produce of the crop.

The growth of Wheat Year after Year on the same Land, unmanured, with Farm-yard Manure, and with various Organic and Inorganic Fertilizers.

That is to say, owing to the dry weather in the autumn, followed by severe weather in the winter, the weak plants on the unmanured land may either be killed out altogether, or injured to such an extent that the crop is hardly worth harvesting, while the wheat where the phosphate was sown may give us almost an average crop.

The liberation of nitric acid, during the year of rest, produced for a time a large growth of wheat, but it was done at a very great waste of the fertility of the soil, and the produce is now, in proportion, considerably lower than that grown on the continuously unmanured land.

The untilled and unmanured grass lands of Herkimer County, in this State, are no richer to-day than they were 50 years ago.

Lawes and Gilbert notice especially, that in the clover-crop of the preceding year, very much larger quantities, both of mineral matters and of nitrogen, were taken from the land, than were removed in the unmanured wheat-crop in the same year, in the adjoining field.

Mississippi River that in many instances better crops will be obtained from poor soils well manured than from good soils unmanured.

The untilled and unmanured grass lands of Herkimer County, in this State, are no richer to-day than they were 50 years ago.