The common advice is to water in the morning and not at night because watering at night keeps leaves wet all night and allows fungal spores to infect leaves. This seems to make sense, but is this really true? Do leaves stay wet a long time if watered at night?
What do farmers do? If they have to irrigate 100 acres, do they stop watering in the afternoon to reduce fungal infection?
Another common piece of advice is to water the soil only. Don’t get the leaves wet and you will have less fungal problems. I have always felt that water evaporates fairly quickly so is this really a concern?