INDEX 



683 



Nitrogen, in plant tissues, 131-138 



relation to fruit-bud formation, 181-186, 

 207-208 



relation to fruit coloration, 212 



relation to fruit composition, 215-216 



relation to fruit size, 209-212 



relation to fruit setting, 209, 510 



relation to season of maturity, 216 



relation to vegetative growth, 204-207 



relation to winter injury, 289 



relation to yield, 212-215 



in soil, 113, 222, 663-605 



storage, 135, 138 



translocation, 131-133 

 Notching, see Ringing. 

 Nubbins, 495 

 Nucellus, 477, 483 

 Nursery stock, 19, 316, 696-606 



see Stocks. 



(Edema, 84 



Olive, composition, 138, 144, 149, 153, 156, 158, 



159 



fertilizers, 216 



geography, 617 



planting distance, 8 



propagation, 590 



root distribution, 63 



soils, 662, 665 



temperature requirements, 242 



water requirements, 8, 16, 77 

 Orange, composition, 138, 144, 149-153, 156, 

 158-159 



fertilizers, 216 



fruit setting, 81, 495, 498 



physiological disturbances, 120 



root distribution, 62, 64 



soils, 118 



stocks, 554, 557, 562-563. 572, 575, 580, 587- 

 588 



water requirements, 7 



see Citrus Fruits. 

 Orchard heating, 373-880 

 Osmosis, 20, 105 

 Ovary, 473, 475, 487 

 Ovule, 476-476 



Papaya, 491, 515 



Parasites and geography of fruit production, 633 



see Diseases. 

 Parenchymatosis, 84 

 Parthenocarpy, 487, 621-629 

 Parthenogenesis, 525 



Pathological conditions, see Physiological Distur- 

 bances. 

 Peach, composition, 4, 138, 144, 148-150, 156, 287 



cultivation, 289 



fertilizers, 204, 208, 2H-212, 215-216, 289 



frost injury, 359-362, 364, 366 



fruit-bud formation, 187 



fruiting habits, 401, 461 



fruit setting, 542 



geography, 620-623, 634 



Peach, irrigation, 71 



propagation, 589 



pruning, 288, 325-326. 410-413. 416, 441, 

 461-464 



soils, 657, 665, 670 



stocks, 555, 562, 576, 580, 587, 599 



temperature requirements, 238-240, 246- 

 246, 248, 622 



thinning, 290 



varietal and group differences, 285-291, 326, 

 362 



water requirements, 3, 6, 16 



whitewashing, 291 



winter injury, 267, 269, 286-292, 298, 312, 

 323-326 

 Pear, composition, 4, 103-104, 133, 138, 141, 144, 

 149, 152-156, 158 



frost injury, 359, 364, 380 



fruit-bud formation, 187, 192 



fruit development, 525, 529, 535 



fruiting habits, 399 



fruit setting, 500, 518, 641, 572 



geography, 248, 612, 614, 619-621 



irrigation, 74 



physiological disturbances, 84, 94, 95 



propagation, 593 



pruning, 408-417, 419-433, 439-447, 450- 

 453, 467-461 



soils, 657, 662 



stocks, 312, 553, 557, 566, 570, 572-575, 585, 

 588, 601- 602 



varietal and group differences, 323, 430, 541 



water requirements, 3 



winter injury, 312, 322-323 

 Pecan, fruiting habits, 405 



fruit setting, 493 



geography, 612, 620-621 



physiological disturbances, 93, 224 



winter injury, 269 

 Pedigreed plants, 603-606 

 Pentosans, 50. 167. 168-177, 267-260 

 Percolation, see Seepage. 

 Perennation, 527 

 Perisperm, 483 

 Persimmon, fruit development, 530, 532-634 



fruiting habits, 404 



fruit setting, 490, 514, 545 



stocks, 559 

 Phosphorus, availability, 108, 116, 225 



elaboration, 138 



in fertilizers, 123, 202, 218-219 



in plant tissues, 101-102, 138-144 



in soil, 225, 663-665 



solubility, 225 

 Phyllody, 84 

 Physiological disturbances , 83-94, 106, 195-197, 



224 

 Pigments, 164, 180 

 Pinching, 332-333, 453-455, 510 

 Pineapple, composition, 150, 153, 158, 159 



fertilizers, 117 



physiological disturbances, 116-117 



soils, 116-117, 658, 662-666 

 Pistil abortion, 484, .504, 509, 511 

 Placenta, 477 

 Planting, depth, 315 



