No problems ! In english :
• Accept the Sherriff's quest ;
• Go to Jonny Westwood and accept his quest ;
• Go to Flint Westwood and accept his quest (Scare birds off the field ~ 5h) ;
• Go back to Flint Westwood and finish his quest ;
• Go to Jonny Westwood and finish his quest ;
• Finish the sheriff's quest ;
• John will give you another quest, finish it ;
• Open the two little bags ;
• Equip the Salt normally fount Scarying birds and finish the sheriff's quest ;
• Go to Flint Westwood to have a new quest (Build an irriguation system ~ 5h) ;
• Go back to Flint Westwood to finish his quest ;
• Flint Westwood will give you a new quest, to finish it you must have 3 fertilizer ;
• Go to mucking out the stables to have it.
• Go to Flint Westwood finish the precedent quest and accept the new (Felling trees ~ 2.30h)