STONE FRUITS. / 219 



33. In what sections of the United States is the peach grown 

 commercially? 



34. How far north is the peach grown successfully? 



35. Vvihat is the effect of good soil for peach growing in the 

 North? 



36. How are peaches protected in winter? 



37. What are the characteristics of peach wood? Of peach root? 



38. What is the origin of the peach. 



39. Into what groups may peaches be divided? 



40. What is the origin and characteristics of each class? 



41. How is the peach propagated in the North? In the South? 



42. How and when is the peach budded? 



43. How are peaches set out in the orchard? 



44. What pruning of peach trees is necessary? On poor soil? On 

 ?ood soil? 



45. What location and soil is best adapted to peach growing? 



46. How should the fruit be thinned? 



47. For what purpose is the fruit used? 



48. What insects and diseases are injurious to the peach? 



49. What are the important varieties grown in the North? In 

 the South? 



50. From what did the nectarine originate? 



51. How is it grown? 



52. Where did the apricot originate? 



53. Over what territory is it distributed? 



54. What are its characteristics? 



55. What trees are used as stocks for the apricot? 



56. How are apricots planted? 



57. What pruning do apricots require? 



58. How is the fruit picked and marketed? 



59. For what is it used? 



60. What insects and diseases are injurious to the apricot? 



61. What are the most popular varieties? 



