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     For students in search of Hydroponic Gardening
 Guides - Basics to Experts level
 Growing fruit and vegetables hydroponically
 Practical daily questions or queries of hydroponics lovers
 Current Hydroponics and Indoor Gardening Market Growth as well as Trends
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                | 121. | Wilt of arhar is caused by: |  
                | 
			 
				
					
				| A. | Verticillium | B. | Fusarium |  
				 				 | C. | Xanthomonas | D. | Meloidogyne |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 122. | Some ______ varieties of apple exude toxic wax on leaf surface to prevent germination of conidia of Podosphaera leucotricha: |  
                | 
			 
				
					
				| A. | Scab resistant | B. | Leaf blight resistant |  
				 				 | C. | Powdery mildew resistant | D. | Rust resistant |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 123. | Some varieties of _____ are resistant to wilt due to the presence of hydrocyanidies (HCN) in root exudates: |  
                | 
			 
				
					
				| A. | Sunflower | B. | Safflower |  
				 				 | C. | Castor | D. | Linseed |  
                        
                        
                            Answer: Option D Explanation:    |  
 
            
            
                | 124. | Species Plantarum is the greatest contribution of: |  
                | 
			 
				
					
				| A. | Linnaeus | B. | P.A. Micheli |  
				 				 | C. | Saccardo | D. | Anton de Bary |  
                        
                        
                            Answer: Option A Explanation:    |  
 
            
            
                | 125. | Sporangium on germination produce vesicle in genera: |  
                | 
			 
				
					
				| A. | Phytophyhora | B. | Pythium |  
				 				 | C. | Sclerospora | D. | Personospora |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 126. | Stipe disease of barley is caused by: |  
                | 
			 
				
					
				| A. | Drechalera gramineum | B. | Drechalera oryzae |  
				 				 | C. | Puccinia striiformis | D. | None of the above |  
                        
                        
                            Answer: Option A Explanation:    |  
 
            
            
                | 127. | Strawbery plants infected with P. penetrans (nematode) have been successfully treated with exposure in hot water at: |  
                | 
			 
				
					
				| A. | 49.4?C for 17.5 min. | B. | 52.8?C for 6 min. |  
				 				 | C. | 54.5?C for 4 min. | D. | 56?C for 2 min. |  
                        
                        
                            Answer: Option A Explanation:    |  
 
            
            
                | 128. | Striga is plant parasite included in: |  
                | 
			 
				
					
				| A. | Fungi | B. | Mycoplasma like organisms |  
				 				 | C. | Phanerogamic plant parasites | D. | Bacteria |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 129. | Sugar beet cyst nematode was reported by: |  
                | 
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 130. | Systemic fungicides was discovered by: |  
                | 
			 
				
					
				| A. | Van Schleming and Kulka | B. | Millardet |  
				 				 | C. | Tillet | D. | Prevost |  
                        
                        
                            Answer: Option A Explanation:    |  
 
 
			
			
 
 
 
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