Supaprastinto žemės dirbimo poveikis kukurūzų biometriniams ir produktyvumo rodikliams

Abstract

A field experiment was performed at the Experimental Station of the Aleksandras Stulginskis University in 2013. The soil of the experimental site was silty light loam Endohypogleyic-Eutric Planosol (PLe-gln-w). The aim of the experiment was to ascertain the influence of reduced different primary soil tillage on maize biometric and productivity parameters. The soil was: 1) conventionally (22–25 cm) ploughed with a mouldboard plough (IA), 2) shallowly (12–15 cm) ploughed with a mouldboard plough (SA), 3) deeply (25–30 cm) tilled with a chisel cultivator (GP), 4) shallowly (10–12 cm) tilled with a disc harrow (SP, 5) not-tilled (ND). In SP and ND soil maize stand was significantly higher (2.03 and 2.04 cm), than in IA plots; however the average length of cobs mostly was similar. Only in GP plots maize cob’s length reached 17.7 cm and was significantly higher tan in control treatment. Different primary soil tillage mostly did not major influence on maize productivity parameters. The significant increase of maize biomass (compared with control) was established in ND plots only