Also he built towers in the desert, and digged many wells: for he had much cattle, both in the low country, and in the plains: husbandmen also, and vine dressers in the mountains, and in Carmel: for he loved husbandry. Built towers in the desert - For the defense of his flocks, and his shepherds and husbandmen.
And in Carmel - Calmet remarks that there were two Carmels in Judea: one in the tribe of Judah, where Nabal lived, and the other on the coast of the Mediterranean Sea, near to Kishon; and both fertile in vines.
He loved husbandry - This is a perfection in a king: on husbandry every state depends. Let their trade or commerce be what they may, there can be no true national prosperity if agriculture do not prosper; for the king himself is served by the field. When, therefore, the king of a country encourages agriculture, an emulation is excited among his subjects; the science is cultivated; and the earth yields its proper increase; then, should trade and commerce fail, the people cannot be reduced to wretchedness, because there is plenty of bread.