Il centro di ricerca coreano mi ha risposto come segue:
Hello,
Thank you for inquiry. Yes I can ship sample for your test. I have a package consisting of 5 bottles of 100 ml. 100 ml is the rate for 500 m2 (0.2 ml/m2). Repeated app of 3 to 5 in 2 weeks intervals usually remove Poa out safely. I...