Many attempts have been made to correlate the results of the analyses of a soil with its known cropping power, but there is yet much to be learnt in regard to these matters.
The most notable feature in connexion with the cropping of the land of the United Kingdom between 1875 and 1905 was the lessened cultivation of the cereal crops associated with an expansion in the area of grass land.
The Agricultural Holdings Act 1906 conferred upon every tenant (with slight exceptions) entire freedom of cropping and of disposal of produce, notwithstanding any custom of the county or explicit agreement to the contrary.
The dentition of the kangaroos, functionally considered, thus consists of sharp-edged incisors, most developed near the median line of the mouth, for the purpose of cropping herbage, and ridged or tuberculated molars for crushing.
The abolition of the cropping of the ears of Great Danes, bull terriers, black and tan terriers, white English terriers, Irish terriers and toy terriers, in 1889 gained the approval of all humane lovers of dogs, and although attempts have been made to induce the club to modify the rule which prohibits the exhibition of cropped dogs, the practice has not been revived; it is declared, however, that the toy terriers and white English terriers have lost such smartness by the retention of the ears that they are becoming.
A more rational system of cropping now began to take the place of the thriftless and barbarous practice of sowing successive crops of corn until the land was utterly exhausted, and then leaving it foul with weeds to recover its power by an indefinite period of rest.
The farmer therefore arranges his cropping in such a way that roots, or leguminous crops, succeed the cereal crops.
The form of the kitchen and fruit garden should be square or oblong, rather than curvilinear, since the working and cropping of the ground can thus be more easily carried out.
The Cruelty to Animals Acts 1849 and 1854 render liable to prosecution and fine practically any act of cruelty to an animal; such acts as dubbing a cock, cropping the ears of a dog or dishorning cattle, are offences.
While the methods of agriculture have generally shown little, if any, advance, the population is increasing rapidly; and although since the emancipation of the peasants the average annual export of cereals has increased from less than 12 million tons in 1860 to over 6 million tons in 1900, this result has been attained largely by the repeated cropping to exhaustion of the soil.