When I got my first allotment (6 years ago) I was talking to the resident allotment old-timer who was chuckling at the people walking back and forth to the tap with watering cans, watering their veg plants. "You don't need to water 'em once they're planted out" he said. So I'm thinking, 'That flies in the face of my understanding of irrigation and what everyone else on this allotment is doing!', so I duly ignored him and carried on watering everything. Come harvest time, he was right and I was wrong. His harvest was fine.
In years 2-6 I have followed his advice and never bother watering anything once it has been planted outside - bar the initial soak as young plants are transplanted out. As of yet, there have been no detrimental effects on my harvest - I still manage to keep me & my family, parents, neighbours and 1.5 freezers in veg.
As I was harvesting some parsnips, potatoes and beetroot today I was thinking about his advice and a few other things that I've read I should be doing, that I actually rarely or never do. I've listed a few things below that I don't do and was wondering whether anyone has any other tips for activities that are commonly advised as good-practice, but in your experience have little or no effect on yield.
So here's a few from me to start. I don't:
1. Water anything that is not in a pot or the poly tunnel.
2. Do regular weeding. I may weed between the onions once or twice a season, but generally I just leave them, harvest the crops at the end of the season, then Glycophosphate the remaining weeds. I recognise there are aesthetic reasons to remove weeds, and removal of them before they produce seeds is good if you have close neighbours (which I now do not have), but I'm considering effect on harvest.
3. Earth-up potatoes.
4. Plant potatoes in trenches (advice from same 'old-timer' who dispelled the watering myth). Just dig a hole with a trowel and drop the seed potato in.
5. 'Chit' sweetcorn.