-2- 



not uniform over the entire tree. Some fruits vdll be ripened much more than adjacent 

 fruits. 



2ih,$-'TA. - For Trial on Hclntosh . 



1. Apply when drop cominences. (Same timing as NM.) 



2. Apply at 20 ppm (read label) as a spray (may be made available on request 

 for airplane use ) . 



3. Will delay drop for more than 3 vreeks but not quite as effectively as 

 2,U,5-TP for the first 3 vfeeks. 



U. 2,l4,5-TA does not hasteniripening as much as 2,U,5-TP and perhaps not 

 appreciably more than NAA. Remember that the longer apples hang th e softer they be- 

 come even if no hormone is used. Don't let the fruit remain unharve sted too long if 

 a good storage apple is desired , 



5. At least one supplier will offer 2,U,5-TA with maleic hydrazide (MH) . 

 MH has been shown to be an anti-ripener and may tend to depress any ripening effect 

 of 2,U,5-TA, To date we have not been convinced that the anti-ripening action of 

 maleic hydrazide is great enough to justify the extra expense of this special formu- 

 lation. However, you may wish to try some to see if you can detect any difference. 

 The MH will not interfere with the drop control effectiveness of 2,l4,5-TA, 



6 2,U,5-TA is not suggested for other varieties since we have no experience 

 with it on anything but Mcintosh, 



7. 2,U,5-TA is a brush-killer at high concentrations so do not use it at 

 concentrations above those suggested and do not use repeated applications. 



General Comments ; 



No hormone is effective for drop control if the foliage is in an unhealthy 

 condition as a result of frost or mite injury. Also, trees suffering from magnesium 

 or potassium deficiencies will drop their fruit readily and hormones vfill not prevent 

 it. 



— F. 1(V, Southwick 



YANKEE INGENUITY CONTEST 



The Massachusetts Society for Promoting Agriculture willcconduct a "Yankee 

 Ingenuity Contest" in Bolton, Mass., on August ll; and IS at the Worcester County 

 Farmers Field Day, 



The purpose of this contest is to bring out the many labor ^^^^^^g f ^^^^[^^3 

 large and small, developed on farms in the northeast and to reward the most ingenious 

 and deserving of the men who developed them. 



The contest will be conducted under the supervision of the University of 

 Ifessachusetts and the Connecticut Valley Branch of the American Society of Agricul- 

 tural Engineers, 



