1S76 



ENCYCLOPEDIA OF PRACTICAL llOK TlCULTUliE 



Fig. 2. SliowinK Blossom Cluster Just After 

 Petals Have Fallen. This is the tiuie for 

 the most important sprajlns for codling 

 moth. Thoroughness of application at this 

 time is absolutely essential. 



(Turdue Experiment Station) 



Potato growers are advised to pay par- 

 ticular attention to the matter of pre- 

 ■ventin.? Rhizoctouia infection on pota- 

 toes. Scab should also be prevented. 



For Rhizoctonia, it will be noted that 

 the calendar advises the dipping of pota- 

 toes for three hours in a 1 to 2,000 water 

 solution of corrosive sublimate. This will 

 also prevent scab infection. 



Fig. 3. A Few Days After the Petals Fall, the 

 Calyx Lobes Close Vp, as They are BeRlnnlnp; 

 to do Here. The second spraying of the or- 

 chard should be finished before this time. 

 (Purdue Experiment Station) 



Fif. 4. A Little Too Late to Spray for Cod- 

 ling: Moth. 

 (Purdue Experiment Station) 



Treated potatoes should never be eaten 

 or fed to animals. Formalin is the regu- 

 lar treatment for scab, where Rhizoctonia 

 is not present. Prevention of these dis- 

 eases by dipping the tubers to be used 

 for planting is the only treatment outside 

 of rotation in crops, which is also advised. 



It must be understood that the calendar 

 does not contain all the information that 



Fig. 5. The Time for the Tliinl Spraying Three 

 or Four Weeks After Petals Fall. 

 (Purdue Experiment Station) 



