XIII, A, 4 Reinking: Philippine Economic-Plant Diseases 181 



pekinensis (Lour.) Skeels, where it produces a leaf spot similar 

 to the one described above. 



CANAVALIA GLADIATA DC., CANAVALIA ENSIFORMIS DC. HORSE 

 BEANS, SWORD BEANS 



These two beans may be attacked by Elsinoe canavaliae Rac, 

 Gloeosporium canavaliae Syd., Physalospora guignardioides 

 Sacc, and Cercospora canavaliae Syd. On decaying leaves of 

 Canavalia gladiata DC. may be found Didymium squamulosum 

 (Alb. et Schw.) Fr. 



CAPSICUM ANNUUM LINN. RED PEPPER 

 BACTERIAL WILT: BACILLUS SOLANACEARUM ERW. SMITH 



The bacterial wilt, which is so destructive on other solanaceous 

 plants, attacks the peppers also. This disease is similar to that 

 on tomato and tobacco, under which it is more fully described. 



FRUIT ROT : VERMICULARIA CAPSICI SYDOW 



Symptoms. — A spotting of the fruit characterized by the pro- 

 duction of soft, often circular, sunken spots. The center of 

 spots may dry, forming concentric rings within which small 

 black spore-bearing bodies are produced. The disease is com- 

 mon, causing rotting* of the fruit (Plate XVIII, fig. 2). 



Causal organism. — The minute black specks produced in the 

 depressed areas are the pycnidia of the fungus. They have 

 numerous slender pointed setse and produce elongated, hyaline 

 conidia. 



Control. — The collection and destruction of diseased pods 

 should be practiced to check the disease. Spraying with Bor- 

 deaux mixture is effective when practicable. 



On dried pods may be found the fungus Phomopsis capsici 

 (Magnaghi) Sacc. 



POWDERY mildew: erysiphaceae 



Symptoms. — A white powdery growth may be produced on the 

 surface of the leaves. At times the disease may be severe. 



Causal organism. — The conidia are somewhat more elongated 

 than the typical erysiphaceous spores, but they are produced in 

 chains on the typical conidiophores. 



Control — Badly diseased plants should be dusted with sulphur 

 or sprayed with a standard fungicide. Crop rotation should be 

 practiced. 



CAPSICUM FRUTESCENS LINN. RED PEPPER 

 FRUIT rot: VERMICULARIA CAPSICI SYDOW 



Symptoms. — A fruit rot similar to that found on Capsicum 

 annuum Linn. 



