CONTENTS xi 



CHAPTER XXX 



IRISH POTATOES 255 



Where Grown Origin and History of Potatoes Description of 

 Plant Seeds Tuber Classification Shape of Tuber Color of 

 Skin Sprouts Flowers Principal Groups Importance of Groups 

 In the Northeastern States In Southeastern States North 

 Central States Western States Market Types Depth of and 

 Number of Eyes Structure and Composition Climate and Soils 

 for Potatoes Degeneration Soils for Potatoes Manures and Fer- 

 tilizers Lime Rotations Applying Fertilizer. 



CHAPTER XXXI 



CULTURE OF IRISH POTATOES 271 



Source of Seed Second Crop Seed Immature Seed Storage of 

 Seed Sprouting Seed Greening Seed Amount of Seed to Plant 

 Whole vs. Cut Seed Time of Planting Depth of Planting Hill vs. 

 Drill Planting Level vs. Ridge Cultivation Tools for Cultivation 

 Harvesting the Crop Storage Changes in Storage Shrinking in 

 Storage Cold Storage Diseases and Insects Controlling Tuber 

 Diseases Controlling Vine Diseases Insects and Insecticides 'Im- 

 provement and Breeding Origin of New Varieties Potatoes from 

 Seeds Sports or Mutations Systematic Selections. 



CHAPTER XXXII 



SWEET POTATOES 288 



The Roots Origin and History Types and Varieties Market 

 Types Where Grown Climate Soil Manure and Fertilizers 

 Applying Fertilizers Preparation of Land Ridging and Level Cul- 

 ture Propagation of Plants Preparation of the Hot-bed Number 

 of Plants Pulling the Plants for Planting Setting the Plants Dis- 

 tance Apart Cultivation Harvesting Tools Storing Construc- 

 tion of Pits Diseases and Insects. 



CHAPTER XXXIII 



CLASSIFICATION AND DISTRIBUTION OF FORAGE CROPS 301 



Classification Acreage Where Grown Dominant Types Tim- 

 othy and Red Clover Region Cow Pea Region Bermuda and 

 Johnson Grass Alfalfa Region Grain Hay Wild Hay Blue-grass 

 White Clover Increasing Production Yield and Prices of Hay. 



CHAPTER XXXIV 



CHARACTERISTICS OF ECONOMIC GRASSES AND LEGUMES 307 



Number of Cultivated Grasses Some Important Requirements 

 Cheap Seed Palatable, Productive, Persistent Origin of Forage 

 Grasses The Improvement of Grasses Characteristics of Grasses 

 Grass Roots Bunch and Sod Grasses Base of Stems Prostrate 

 Stolons Rhizomes Adaptation of Types Palatability of Grasses 

 Adaptation to Wet or Dry Land Adaptation to Acid or Limestone 

 Soils Life Period of Forage Plants Permanent Grasses. 



CHAPTER XXXV 



GRASS MIXTURES SEEDS AND SEEDING . , 317 



For Pastures and Lawns Meadow Mixtures nSoil Not Uniform 

 Pasture Mixtures Supplementary Pastures Temporary Pastures 

 Permanent Pastures Other Grasses Natural PasturesGrass Seeds 

 Inert Matter Sold by Weight Dead Seeds Immature Seeds 



