CHAPTER VIII 



THE LIVING ENEMIES OF CROPS 



Kinds of Plant Enemies. Almost all of the living 

 enemies of plants are insects or fungi. Besides these 

 there are birds which attack various crops, especially 

 rice ; bats, which eat fruit ; and wild hogs and monkeys. 

 The means of fighting these enemies are well known, 

 and do not need to be described here. There are also a 

 few diseases caused by bacteria, which have never been 

 studied at all in the Phil- \ 

 ippines; and a few dis- \v 

 eases caused by very 

 minute worms. These 

 live in the ground in 

 some localities and are Fl<: ' 36 - Locust 



very hard to kill. Where a plant has a disease caused 

 by something that lives in the ground, it is usually best 

 not to try to grow the plant. As a rule, each of the 

 living things which cause disease attacks a certain kind 

 of plants, and is harmless to all others. 



INSECT ENEMIES 



Locusts. The insect enemies of plants arc numerous 

 and some of them are very destructive. The most de- 

 structive of all in the Philippines is the locust. There 



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