[See FALLOW sb. 2.] A lying or laying fallow during the summer; also, land that lies fallow during the summer.
1733. Tull, Horse-Hoeing Husb., vii. 78. This sort of Hoeing has every year the Effect of a Summer-fallow.
1765. Museum Rust., IV. 143. The ill consequence of not giving it a summer-fallow to clean the ground thoroughly.
1801. Farmers Mag., Jan., 85. The quantity of ground under Summer-fallow this year.
1844. H. Stephens, Bk. Farm, III. 990. The sowing of the fallow-crop on the summer-fallow is delayed to autumn.
1875. Encycl. Brit., I. 340/1. That prolonged form of it [sc. the fallowing process] called a summer or naked fallow.
b. as adj. Lying fallow during the summer.
1801. Farmers Mag., Jan., 105. The months of November and December were very favourable for getting the Summer-fallow land seed-furrowed.
1844. H. Stephens, Bk. Farm, III. 999. I trenched 13 acres of my summer-fallow break in the months of June and July.