Cukrinių runkelių kokybės rodiklių optimizavimas tręšiant juos per lapus

Abstract

The trials were carried out at the Didieji Šelviai location of Vilkaviškis district over the period 2012–2013. The research was on the effect of leaf spray fertilization through application of Nutrivant plus and Razormin, Aminocat, Kelik K, Boron sugar beet quality indicators. The trial field was treated with NPK 12:11:22 ARVI (780kg ha-1) + ammonium sulphate (N34) 150 kgha-1 (background treatment of the considered trial - control). Solution of the Nutrivant plus, Razormin, Aminocat, Kelik K, Boron were applied on sugar beet sprouts at the stage: 1)14 – 18 BBCH; 2) 22 – 25 BBCH; 3) 30–35 BBCH. Other agrotechnical measures were applied according to the sugar beet growing technology used on the farm. Sugar beet roots were harvested on the tenth October. Quality indicators in the roots was established at the Kėdainiai Sugar refinery. Appliecation of Nutrivant plus and Razormin, Aminocat, Kelik K, Boron fertilizer on sugar beet had a positiveimpact on the sugar beet quality indicators. The obtained results revaled that application of the the Nutrivant plus and Razormin, Aminocat, Kelik K, Boron solution reulted lower alpha-amino-nitrogen, boron deficiency. Meanwhile the higshest yield of sugar beet (2012year – 5,1 tha-1 and 2013 year – 8,12 tha-1) was determined in the test versions, where sugar beet were sprayed with the Nutrivant plus and Razormin, Aminocat, Kelik K, Boron together applying.