Factorio Forums

Agricultural towers seem to behave oddly when their inventory is almost full and the crop they're harvesting yields multiple items.
After the harvest, the overflow items are dropped on the ground preventing the tower from planting further crops in the area.

The logic behind how agri towers deal with crops that yield multiple items should be adjusted so that they only harvest the plants when all their drops are able to fit in the output inventory.
This is a screenshot I got sent as a bug report in one of my mods showcasing the issue.
While I had already noticed this happening I never thought of reporting this, but now that I know it is a common issue I wanted to report the problem.
I know from a previous report that agri tower logic is being revamped for 2.1 so my apologies if this issue was already addressed.

How are the multiple products defined for your plants? The tower should be checking before it harvests that the results will fit so something seems to be going wrong with that.

Actually Boskid pointed out the issue on the engine side. This is now fixed for 2.1.

User mentioned in topic here.
Some detail to add is that, The item overflow is really due to the randomization of output.
e.g.
For some item with for 1-10 quantity of possible harvest item A.
When the last storage slot of that item A is at (hypothetically) 48/50 (50 is stack size) it will not harvest.
But when that item A is at (hypothetically) 43/50, and the harvest rolled a 10, the remaining 3 that does not fit will get left on the ground.

When there is roboport in the vicinity the items will be automatically tagged for removal, but when there isn't the items will just be left on the ground preventing harvest.