66 VEGETABLE GROWING PROJECTS 



7. Should you use phosphorus ? nitrogen ? potassium ? 



W-VG : 459-460, 59-62. C : 438-439. Tra: 43-45. 



Sp: 155-161. 



8. How and when should the fertilizer be applied ? 



W-VG : 499, 67-68. C : 438-439. Tra : 43-45. 



9. Estimate the fertiUzer materials you will need and determine 



their cost. 



10. Will home mixing payf How is it done? 



W-VG : 69. V : 215-218, 240-241. 



11. Give the most important reasons for the rotation of crops. 



12. Discuss the time of plowing and harrowing in relation to soil 



moisture problems. 



15. Planting in the garden. — We must not be too ambitious in 

 regard to the early planting of tomatoes. We should never lose 

 sight of the fact that this is a tender vegetable and that frost and 

 cold weather may kill the plants or at least seriously injure them. 

 The safer plan is to be patient and wait until there is little danger 

 of frost before risking the plants in the open ground. In most 

 sections of the North, it is unsafe to set out the plants before May 

 20 ; even June 1 is not too late in some localities. If the plants 

 are in the field or garden and there is danger of frost, a simple and 

 effective method of protection is to cover them with soil. At first 

 thought this may seem like rough treatment, but when we note 

 the splendid condition of the uncovered plants the method appeals 

 to us very strongly. It consists in drawing a mound of soil with a 

 hilling hoe against the stem of the plant, carefully bending the 

 plant over the mound and covering it with an inch or two of soil. 

 The whole operation requires only a few moments to each plant. 

 If the weather continues cool, the plants may be left covered for 

 two or three days. 



