HORTICULTURAL DEPARTMENT 



Bulletin INTo. 3-4.— Irrigation 



CONTENTS 



Introductory ..... 



Why we Irrigate .... 



Source of Water Supply 



Practical Examples cited 



Irrigation Reservoir, Fish-Pond, and Ice-Pond combined 



Economy of Water 



Experiments with and without water-tight bottoms, indoors 



Experiments with Sub-Irrigation out of doors 



A New Idea in Irrigation 



Surface Irrigation .... 



Sub-Irrigation .... 



How to lay the Tiles in Sub-Irrigation 



A New Method .... 



Expense . . . . 



Cultivation ..... 



Mulching ..... 



General Considerations . 



Literature ..... 



Acknowledgments . 



Summary Remarks 



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