This question actually made me smile because I was thinking about it about a week ago so I guess I can answer it well. Agriculture is that field of life (pun intended) that seems the least bit involved with technology but in truth is as intertwined with it as things like phones and cars.
Let's have a look
1) bio engineering and genetics: many of the crops that we see now are very much different from what they originally used to be when they grew wild. Some of them had so little edible parts that it would take a hundred to fill a grown man. Crops like corn have been cultured and engineered to become what they are today. And that's thanks to technological advances.
2) cultivation of bacteria : a bacteria called Bacillus Thuringiensis serves as a reservoir and it makes crops insect resistant. And this in turn allows the crops to grow without disturbance from pests.
3) drought resistance: it is possible to grow crops in the desert now. This is something that would have seemed next to impossible a few decades ago. But it is possible because with technology, man has been able to produce crops that are capable of resisting drought and growing even in the most arid of regions. And even if they weren't drought resistant, there's irrigation methods now that are better than ever so let's say options are plenty.
3) machines: with machines, man is able to plough his fields faster and better, transport them quicker, store them better and generally speed up all processes on the farm.
Honestly I could keep on going but I think you get the point. Technology is as important to agriculture as it is to any other sector.