At the time I don't recall using any chemicals too often. In Portugal we used cow excrement mix with some dried hay on plantation and that would give them enough power during winter time. Then once summer warm weather kicks in, you would have most of your crop already ready to harvest.
But I recall using some chemicals on stuff like tomatoes and beans, because those plants where too sensible.
It would depend a lot on the year. But I recall my dad saying that spacing things a bit more would help, because these would spread easily with water. Although the best would be to pay attention to the conditions of any imminent disease and spray them as soon as you can before it escalates.
Small fields were much harder to control compared with bigger ones. Because the spread was inevitable. So for large plantations, you might be able to monitor and catch these faster... small things once you get it, you are already too late.
At the time I don't recall using any chemicals too often. In Portugal we used cow excrement mix with some dried hay on plantation and that would give them enough power during winter time. Then once summer warm weather kicks in, you would have most of your crop already ready to harvest.
But I recall using some chemicals on stuff like tomatoes and beans, because those plants where too sensible.
It would depend a lot on the year. But I recall my dad saying that spacing things a bit more would help, because these would spread easily with water. Although the best would be to pay attention to the conditions of any imminent disease and spray them as soon as you can before it escalates.
Small fields were much harder to control compared with bigger ones. Because the spread was inevitable. So for large plantations, you might be able to monitor and catch these faster... small things once you get it, you are already too late.