MISCELLANEOUS VEGETABLES 359 



small pots and then shifted to larger ones when the roots 

 become crowded. A common practice is to plant in 

 4-inch pots and then to shift to the beds or benches. 

 One plant of a pole bean in each place seems to produce 

 a larger crop than two plants. The pole varieties may 

 be supported by trellises, twine or light stakes. 



In general, greenhouse beans require about the same 

 cultural conditions as the cucumber. The soil must be 

 rich, but it should not contain an excessive supply of 

 quickly available nitrogen. Fresh stable manures should 

 never be employed and rotten manures should be well 

 mixed with the soil. Liquid cow manure is applied by 

 some growers after the pods are formed. 



A night temperature of 60 degrees will do, but 5 to 10 

 degrees higher will give better results, and the day tem- 

 perature should range between 70 and 80 degrees. 

 Careful ventilation is necessary. Sufficient water should 

 be applied to keep the soil moist, and a moist atmosphere 

 is also desirable. When the plants are flowering, a fairly 

 dry atmosphere will aid the self-fertile flowers to set a 

 good number of pods. 



The red spider, the aphis and the white fly are the 

 most serious pests of the bean when grown as a forcing 

 crop. 



Growers cannot count on more than two or three 

 pickings from greenhouse plants. The pods may be tied 

 in bundles of 25 to 50 for marketing, or the spring crop 

 can be sold in bulk. 



BEET 



The beet is grown in greenhouses, to a limited extent, 

 both for greens and for the roots. The soil should be 

 rich and friable. Temperatures which are suitable for 

 lettuce will meet the requirements of the beet, though it 

 grows more rapidly at higher temperatures. 



