CONTROL OF GARDEN DIriEASKS AND INSECTS. 69 



I.ATE-HLIGHT. 



A rapid blighting of the leaves, accompanied by rotting of the 

 fruit, is due to the same fungus as that causing potato late-blight. 

 This is common in the Appalachian region. 



It is controlled by spraying with Bordeaux mixture as advised for 

 leaf-spot. 



LEAl'-SPOT. 



In leaf-spot, the leaves are covered with dark-brown spots (fig. 

 81) and shrivel and die, beginning at the base of the plant. This 

 is the worst disease 

 of the tomato. Spray 

 with Bordeaux mixture 

 and resin fish-oil soap 



before the disease ap- ^^^^^^^^^^h ^ ^ 



pears and repeat at ^^^^^^^B^bA 4 9%''^'"^ 



10-day intervals. Try .^^^^KKH ^m^^' 



to spray the lower ^ ' 



side of the leaves as 

 well as the upper side. 



MOSAIC DISEASE. 



% 



n-j 



«*^?--^ 



m^ 



aato leaf-spot. 



Mosaic disease cruni- \^*"% 



pies and distorts the ■'■ ^ 



leaves and produces 

 irregular, light - green 

 areas. The plants are 

 weak and unfruitful. 

 In the "fern-leaf " type 

 the leaves become very 

 narrow. 



Mosaic disease is com- pj,. 



municable from plant 

 to plant by insects, especially plant-lice, and by contact. AVhen it 

 appears in gardens it is best to destroy the affected plants and set 

 out others. 



BLOSSOM-END KOT. 



A decay of the fruit at the blossom end (fig. 82), though not im- 

 derstood clearly, appears to be connected with soil conditions, par- 

 ticularly with the water supply. To prevent it, try to make the soil 

 well drained but retentive of moisture. Water the plants if needed. 

 Plant the variety Bonny Best, which seems to resist blossom-end rot. 

 Tomatoes trained to stakes and pruned often are less attacked. 



