NURSERY PRACTICE FOR PRAIRIE-PLAIXS PLANTING 125 



ROOT COLLAR. 



ALINING 



—-?■-% — i — ■ 



CRQIYN/NG OVER. 



Figure 51. — Steps in heeling in nursery stock: .1, A trench 3 feet wide with a 30° 

 to 45° slope from the vertical on the back wall; B, bundle of seedlings placed 

 with root collars 1-2 inches below ground line (indicated by twine binding ; C, 

 first row packed in and new back wall ready for second row; D, position of aline- 

 ment pole; E, trench filled with four seedling rows. 



In the southern and central parts of the plains region, where freezing 



and thawing alternate and drying winds commonly occur during the 

 winter months, the \)vd> can be covered with straw in Late fall to 

 protect the tops of stock from drying. The straw cover will also 

 prevent the ground from freezing and will give access to the stock at all 



