M.i.l. I \lfl.l. ( ROPS. 



■or, 



high or more. After the appearance of these symptoms the plants seem to make 

 no progress, and any fruit produced i- of poa| type. The plant finally may 

 wilt and die off rapidly or persist in a diseased state for quite a long period. 



This disease is distinct from the Fusarium disease (Sleeping Sickness) 

 and from the bacterial wilt or blight. Its cause is unknown. Early crops 

 seem to be more badly affected than late crop-. 



Treatment. — Pull up and burn affected plants as soon as symptom> are 

 noticed. Do not allow old plants to remain alive in the field over the winter; 

 destroy them by fire as early as possible after removing the crop. No com- 

 mercial variety entirely resistant is known. 



Tomato Leaves (transmitted light , showing the markings of Spotted Wilt. 



Stem Rot in Tomato Seedlings. 



A disease associated with two fungi, Fusarium and Phytophthora, has been 

 noted in tomato seed beds. It may prevent the raising of seedlings, doing 

 great damage. The symptoms first noticed are a browning and discoloration 

 of the stem at or a little above the ground level. The plant wilts, and then 

 the top of the plant falls over, the stem being weakened at the affected point. 

 Progress of the disease is rapid, especially under moist, warm conditions. 



Control. — Obtain seed from clean sources; use soil known to be uncon- 

 taminated; remove and burn boxes of seedlings affected with the disease; 

 spray the remainder with Bordeaux mixture (6 — 4 — 100) as a preventive; soil 

 can be sterilised by flooding with formalin (2 per cent.) and covering it 

 with a clean sack for several hours to allow the vapours to penetrate. Sow 

 the seed only after the soil has ben turned over and aerated again to remove 

 the formalin vapours. Allow half a gallon to each square foot of the seed bed 

 surface. 



* 547 y7— Z 



