| 1. | By 1935 many plant diseases were thought to be caused by viruses.
|
| 2. | Third, researchers use the forest to learn about plant diseases and genetics.
|
| 3. | Diversity provides non-toxic, sustainable crop protection against plant diseases and insect pests.
|
| 4. | Proper pruning will increase air circulation and decrease the likelihood of plant diseases.
|
| 5. | He helped organize and publish results on the survey of agricultural plants diseases.
|
| 6. | Some are businesslike books on plant diseases, insects and propagation techniques.
|
| 7. | Biological control agents of plant diseases are most often referred to as antagonists.
|
| 8. | The origin of plant diseases was not known at that time.
|
| 9. | It includes the causal organisms of many economically important plant diseases.
|
| 10. | He came to the conclusion that bacteria, like fungi, could cause plant diseases.
|
