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Scientific Bulletin of Namangan State University

Abstract

In the current article the data is given about impact of fertilizer rate on the leaf surface and index of Columbus grass in experimental field in the condition of Samarkand region. It is found out that Columbus grass being relatively sensitive to nitrogen, phosphorus and potassium fertilizers changes its leaf surface and index depending on the fertilizer rate. Relatively increasing of leaf surface and index is observed at a phase of panicle formation and flowering with fertilizer application at a rate of N200 P140 K100 kg/ha

First Page

81

Last Page

85

References

1. Avutxanov B.S.,Safarov A.K. Safarov K.S. Vliyanie usloviy mineralnogo pitaniya na chistuyu produktivnost fotosinteza i urojaynost travi Kolumba //Uzbekskiy biologicheskiy jurnal.2013 g. №1. s. 25-26 2.Dala tajribalarini o‘tkazish uslublari – Toshkent: O‘zPITI, 2007. – 147 b. 3.Rajbxandari B.P.Osnovi kulturi travi Kolumba(Sorghum almum Parodi)v suxix subtropikax SSSR: Avtoref. diss… kand. sel-xoz nauk. –M,1984.-16 s. 4.Tretyakov N.N., Karnauxova T.V., Panichkin L.A. Praktikum po fiziologii rasteniy. - M.: Agropromizdat, 1990. -S. 116-119. 5.Uteush YU.A. Novie perspektivnie kormovie kulturi. – Kiev: Naukova Dumka, 1991. – 120 s.

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