Iain C. MacSwan

• Air pollution and how it affects plants
• Apple scab control in home gardens
• Bean rust
• Blossom-end rot of tomatoes
• Controlling moss on roofs
• Halo blight of beans
• Plant diseases in Oregon
• Preparation of tank-mix Bordeaux mixture
• Spray schedule for home orchards
• Suggestions for peppermint wilt control
• Sycamore anthracnose