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Oh, I wasn't thinking orchards. I thought OP was talking about row crops which can't feasibly be irrigated with hoses.

krisoft 2y ago
> I thought OP was talking about row crops which can't feasibly be irrigated with hoses. Are we talking about irrigation pivots[1] here? Because those are a known technology. If we are thinking about robots driving up and down the rows and watering plants from a tank, and then returning to some central location to re-fill their tank that feels like a "carrying water for elephants" situation. I suspect the logistics won't work out. Could try to run some numbers on it of course. Is that how you are thinking about it? 1: https://www.youtube.com/watch?v=7j1lMs7fcIQ https://www.youtube.com/watch?v=7j1lMs7fcIQ
- HeyLaughingBoy 2y ago
  Yeah, and I think you're right. I hadn't even given any thought to the massive weight of the water tank you'd need to do this. I was thinking of it more like a sprayer, which requires a much smaller volume to be useful.
  - tomhoward 2y ago
    The other issue is the ability to respond to extreme heat quickly enough. We work with fruit growers in South Eastern Australia where temperatures routinely hit high 30s and even low-mid 40s (°C) a few days each year. Those growers want to see our soil moisture data readings updated every 15 minutes so they can turn the drippers on very quickly as soon as the soil starts drying out rapidly. It would just be too slow to rely on robots driving up and down the rows in those conditions.
unregistereddev 2y ago
Row crops can be (and already are) irrigated with hoses. In dry areas of the world, drip tape is buried throughout the entire field because it allows farmers to make more efficient use of the water available to them. It does require the machinery has auto-steer (which is standard practice now anyway), because tearing up the drip tape with a planter is an expensive mistake. https://whyfarmit.com/drip-tape-irrigation/ https://whyfarmit.com/drip-tape-irrigation/
- HeyLaughingBoy 2y ago
  Really? I didn't know that. Just didn't seem feasible to have irrigation lines running for that distance.

> I thought OP was talking about row crops which can't feasibly be irrigated with hoses. Are we talking about irrigation pivots[1] here? Because those are a known technology. If we are thinking about robots driving up and down the rows and watering plants from a tank, and then returning to some central location to re-fill their tank that feels like a "carrying water for elephants" situation. I suspect the logistics won't work out. Could try to run some numbers on it of course. Is that how you are thinking about it? 1: https://www.youtube.com/watch?v=7j1lMs7fcIQ https://www.youtube.com/watch?v=7j1lMs7fcIQ

HeyLaughingBoy 2y ago
Yeah, and I think you're right. I hadn't even given any thought to the massive weight of the water tank you'd need to do this. I was thinking of it more like a sprayer, which requires a much smaller volume to be useful.
- tomhoward 2y ago
  The other issue is the ability to respond to extreme heat quickly enough. We work with fruit growers in South Eastern Australia where temperatures routinely hit high 30s and even low-mid 40s (°C) a few days each year. Those growers want to see our soil moisture data readings updated every 15 minutes so they can turn the drippers on very quickly as soon as the soil starts drying out rapidly. It would just be too slow to rely on robots driving up and down the rows in those conditions.

unregistereddev 2y ago

Row crops can be (and already are) irrigated with hoses. In dry areas of the world, drip tape is buried throughout the entire field because it allows farmers to make more efficient use of the water available to them. It does require the machinery has auto-steer (which is standard practice now anyway), because tearing up the drip tape with a planter is an expensive mistake. https://whyfarmit.com/drip-tape-irrigation/ https://whyfarmit.com/drip-tape-irrigation/

HeyLaughingBoy 2y ago
Really? I didn't know that. Just didn't seem feasible to have irrigation lines running for that distance.