8 DEPARTMENT BULLETINS NOS. 4*76-500. 



Department Bulletin No. 499. — The Mulched-basin System ok Irrigated 

 Citrus Culture and Its Bearing on the Control ok Mottle-leaf— 



Continued. Page. 



Lateral movement of soil moisture very Blight J3 



Summer cover crops in Orange groves not practical withoul an increased 



water supply— 1 1 



Organic mill, hes more effective than soil mulches in conserving water.. 14 



I". He, i ui basiningon tree growth J 5 



The muli hed l>asin in relation In suit type 16 



Effect of the mulched basins oil soil conditions and fool growth 1 7 



Fruit selling and tree growth as influenced by the mulching material.... '8 



Si e Of basins 23 



Cost Of preparing and maintaining the basins and the mulch 24 



Limitations of t he mulched-basin system 25 



Humus contenl of the basins and the check soils 20 



Summary 28 



Department Bulletin No. 500. — Tin-: Cost ok Producino Apples in West- 

 ern Colorado: 



Facts brought out 3 



I lonclusions drawn 4 



History of the apple industry 5 



Topography : 5 



Soils ' ii 



Climate. . . .• 7 



Distance from market . 8 



Farm organization 8 



The orchards 12 



Orchard management 14 



Harvesting operations 34 



Yields. 39 



Marketing A 1 



Materials and fixed costs : 41 



Summary of all costs 44 



