AND OTHER IXjrRIOUS INSECTS OF I907 AND I908. I37 



left as checks. These were repeated as applications to the plants on June 

 10th and again on June 24th, and again July 3rd. Radishes pulled and ex- 

 amined July 16th. None of the above treatments were distinctly success- 

 ful, although the hellebore showed some advantage over the others. 



EXPERIMENT NO. 8— MISCELLANEOUS. 



On July 24th sixteen rows of radishes planted: 



Four rows left untreated as check. 



Four rows treated with hellebore decoction on Aug. 1, 10 and 26. 



Four rows sulphur planted with seed. 



Four rows treated with milk of lime and carbolic acid on Aug. 1, 10 

 and 26. 



On September 8th radishes pulled and examined. Decidedly fewer 

 maggot marks on those treated with hellebore and those treated with car- 

 bolic-lime than on check plants, but the treatment in each case appeared 

 to afifect the growth of the plants. 



EXPERIMENT NO. 9.— MISCELLANEOUS. 



On July 24th twelve sixteen-foot rows planted. Treated on August 

 3rd, 10th and 26th as follows: 



Four rows with tobacco decoction. 



Four rows untreated as checks. 



Four rows with hellebore decoction. 



On September 8 radishes pulled. No definite results. 



EXPERIMENT NO. 10— HELLEBORE DECOCTION. 



Eighteen sixteen-foot rows planted July 24th. Four rows untreated; 

 four rows treated with hellebore decoction as follows: August 10th and 

 August 26th. On September 9th radishes pulled and examined. Treated 

 rows showed 50% gain in unmarked radishes over the untreated. In other 

 words, there were only half as many marked roots in the treated rows as 

 in the untreated. 



EXPERIMENT NO. 11— A COMPARISON OF VARIETIES TO TEST 

 THEIR SUSCEPTIBILITY TO MAGGOT ATTACK, 



Twenty-eight rows of radishes planted June 28th as follows: 



1 and 2 two rows — ^Early Golden Yellow. 



3 and 4 two rows — Early Round Deep Scarlet. 



5 and 6 two rows — Early Scarlet Turnip, White. 



7 and 8 two rows — California Main White China (winter). 



9 and 10 two rows — Improved Chaitrer. 

 11 and 12 two rows — Scarlet China. 

 13 and 14 two rows — Icicle. 

 15 and 16 two rows — Round Black Spanish. 

 17 and 18 two rows — Early White Giant. 

 19 and 20 two rows — Half Long Black Winter. 

 21 and 22 two rows — White Strasburg. 

 23 and 24 two rows — Early Scarlet Globe. 

 25 and 26 two rows — Early Scarlet Globe Turnip Root. 

 27 and 28 two rows — Long Red Ear, Short Top. \ 



