Thk Oliv]^ IX Arizona 



505 



be varied slightly in different soils, because the lighter soils do not 

 produce as strong growth as the heavier soils. Differences in the 

 growth of varieties influence the distance of planting ; for example, 

 the Manzanillo variety is much less vigorous than the Mission, and 

 consequently may be planted closer together. 



Pl.ANTINC. TIlK TREF. 



A wide, deep hole is necessary to insure sufficient loose soil for 

 strong, rapid root development. If hardpan exists it should be blasted. 

 The trees should be set two to three inches deeper than they grew in 



i3;a:' 



FiL'. 10. Kisht ye:irolri nlivp orfhard, showing eood spacing. 



the nursery. After the soil is thoroughly settled, the tree will be at 

 the proper level. When the tree is set the roots are spread out hori- 

 zontally, with the tips pointing slightly downward, and soil is packed 

 around them by hand. Irrigation should follow inimerliately, which 

 will settle the soil about the roots in a way that is impossible to ac- 

 complish by packing. If not convenient to irrigate soon after plant- 

 ing, one or two bucketfuls of water should be poured arounrl the roots 

 of each tree during planting. The orchard should be cultivated in 

 order to form a loose soil mulch around the trees, as soon after plant- 

 ing as the condition of the ground will permit. 



