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acres adopted America amount Anderson New South barley better Cameron Campbell system capillary carried change crops clay climate Conference conservation Coolabah Cowra Crouch New South cultivation deep ploughing delegates Department of Agriculture depth disc drought drought-resistant dry areas dry districts dry farming evaporation fallow fertility fodder crops Government grain grown growth Hammond harrow harvest implements Lameroo land Lindon manure moisture mulch necessary Nyngan obtained organic matter packing paddock paper particles Peacock New South phosphoric acid Pinnaroo plant food plots possible practical farmer present President South principles produce profitable Queensland question rain rainfall rape Richardson South roots rotation season Senator McColl settlers sheep soil structure South Australia South Australia)—I South Wales South Wales)—I Soutter sowing sown Standley subpacking subsoil subsurface success suitable summer superphosphate Sutton New South tillage tilth tion varieties Victoria Victoria)—I vote weeds wheat-growing Wimmera yield