“…Many scientists in foreign countries have observed the ripeness dynamics of cereal plants and harvesting methods in their wax-ripeness period, they are F.M.Kanarev [1], Ya.A.Podiniesh [2], M.G.Penkin [3], A.Kuznetsov [4], Yu.N.Upkunov [5], E.V.Jalnin [6], A.A.Zangiyev [7], R.R.Allen [8], P.R.Philips [9], J.R.O'Callaghan [9], E.A.Smith, P.H.Bailey, G.W.Ingram [10], D.A.Pacey and M.D. Schrock [11].…”