LOVE THIS SO MUCH!!!
for the person asking how Shizuku knows a lot when she's "only" studying agriculture, Agriculture has 20 branches, it isn't just about farming. Plus lets Consider that Shizuku came from a family who are experts in agriculture and she's also hardcore at it. For the things that you've mentioned that she made, all she did was provide her knowledge and left it all to the craftsman to make and it was said that it took a lot of trial and error to make those things. Also from what i remember, she had this book when she got transported back in time.
Sengoku Komachi Kurou Tan!