686 



INDEX 



Transportation facilities, 639 

 Trunk splitting, 298-300 

 Tufting of carpels and seeds, 84 



U 



Unfruitfulncss, see Fruitfulness. 



Variegation, 569 

 Verdant zones, 646-648 

 Virescence, 85 



Walnut, composition, 4, 138, 144, 149, 152-159 

 fruiting habits, 405 

 fruit setting, 493 

 geography, 620 

 physiological disturbances, 88 

 stocks, 568, 588 

 water requirements, 3, 16 

 winter injury, 268 



Water, absorption, see Absorption. 



adsorption, see Adsorption. 



conduction, 28-29, 276 

 Watercore, 86 



Water content, plant tissues, 4-6, 60, 275, 276, 

 287, 294, 319, 320 



soil, 13-17, 49 

 Water, requirements, 1-13 



retention, 266-260, 274-276 

 Whitewashing, 291, 296, 368 

 Wilting coefficient, 13-17 

 Wind, influence on, evaporation, 45, 281-284, 634 



frost, 341, 378, 379 



fruit setting, 618 



transpiration, 26-27 



winter injury, 273 

 Windbreaks, 46, 81, 281-284, 652 

 Winter killing, 260-262, 296-300, 566-567 

 Winter injury, 264-278, 292-336, 651 



Xenia, 482 



