^Pretty sure Orange can self pollinate without the need for bees as they have perfect flowers ( male and female parts ) like tomato.
santosorganics.com.au/food-philosophy/organic/genetically-modified-crops-threaten-bees/Ed Pearce from the Coffs Harbour orchid society believes mosquito pollinate orchids
Wasps are another important insect, not only do they help pollinate but also damage pest populations in the process.
I plant Alyssum at the foot of various crops to draw in many biological bugs.
Almost Maintenance free and amazing fragrance , great example of build it and they will come.
I've identified 8 parasatoids and 2 hoverfly species. There are many more
The Hoverfly are most beautiful inquisitive drone-like creatures laying the best insect munching maggots you have ever seen
It's a brutal world the Insect kingdom and awesome to see it in action, watching baby wasps busting out of Aphid mummies is really satisfying stuff for farmers.
Not too sure but I imagine unpollinated citrus cease to develop then fall off later on ?
Unpollinated Avocado are marketed as seedless cocktail avocado and fetch a good price for elegant dining
Years ago I worked in a fruit shop and the Boss man sent me to pick up oranges from our local supplier, driving down the orchard driveway I noticed a row of orange trees much taller than the rest and assumed it was a wind break for violent weather. I asked the farmer ( Jim Wibberly ) what variety those taller trees were and he replied 'They are the same tree ( washington navel ) planted at the same time as the others.'
I was confused then he pointed out the power lines directly above had made the trees grow much faster and the fruit a lot bigger, so much bigger in fact that it made the fruit 2nd grade and he hated it but there was nothing he could do about it.
I wonder if other trees would perform similar or is it a citrus phenomena ?