SUBSOIL IRRIGATION.

Otago Witness, Issue 1465, 13 December 1879, Page 5

SUBSOIL IRRIGATION.

j . A limited amount'of \vater ,(say's an . contemporary) will irrigate t'en jiie amount of,, ground 'on the sub:irrig'atio'n 'jplan' th'anTi^ > wonld on the'.floodmg^or surface methc^d. 'it' method of irrigation will be generally adopted in all countries whejre. irrigation is, re.quire#, and . especially in, Southern,^California!- where it will .■ poon bring thousand's'of,' acres' into cultivation that otherwise would, remain, in a wild'.sta'tei fpr years to' cpmei- That "the 'reader( may.havVa more definite idea of Bubrirrigati6n,,We,will ex- .' plain the moduaopemndi t arif wh'en'onc^ under'sty'od itoommends itself a enbeess tq'every'intel-' ' ligenfc mind., ' It consists, of pipes made of,' lime and' sand, made by'maohinery (and'is'cbn^uoua if desired, without, joint), and laid along each row ( of irees, 18. jnpb.es "'dr two feet below' tha, surface, so, as, to bpout of the way of the plough! At" each ibreje! there is a.smali' .orifice inthe'pjpe, frbmj.whioh' the. water issues. 'This"o rifice 13" jprotecteji by' a pipe 'which i rests/ on r 'the ' main ' ipipe and extends above'the ground' six br'mora •inches. The water passes out unde"r- the' lower' [end of itj.on r to the roots" of the', tree, pending ithem down, instead ,of to the surface, a^iniurifao^ irrigation. Evaporation 'takes 1 place under' the earth '^nd ; spreads moisture .'for many feet 'around/ so that' 'the' 1 ground' mid way between ■the rows is' sufficiently moist' to growany kind' (ofa'prop. " f .', -" ", "" '"•''"■