1. On what does it depends if I get the first or the second reward?

2. What is the different between alternative and non-alternative seeds?

thank you professor manor >.<

Ah there is also two more questions
Is it able to use the manor system if there is no castle owner?
And for example: Can I sell crops I farmed from gludio territory only in gludio or everywhere?

1. No
2. You can sell every crop to a town which buys it.Aka - you buy a gludio seed ,make 1000 crops and go to the manor in giran . if the castle is buying your crop ,you can sell it

1-The castle owner decides.
2-Alternatives are more expensive, its harder to sown them (less land rate), but the crop worths much more than the normal seeds. And mobs still drop items.