Korelaciona zavisnost prinosa zrna i komponenti prinosa prolećnog ječma gajenog na kiselom zemljištu

Milomirka Madić,Dragan Đurović,Aleksandar Paunović,Dalibor Tomić,Desimir Knežević,Vladeta Stevović,Vera Đekić

doi:10.5937/aaser1947041m

Abstract

A field trial was conducted in 2016-2017 to determine the effect of different rates of mineral fertilisers, especially phosphorus, and lime on grain yield, yield components and their correlation in the spring barley cultivars 'Dunavac' and 'Novosadski 456' under dryland farming conditions at the experimental field of the Secondary School of Agriculture, Kraljevo. The experiment was performed on a very acidic soil (pHH2O 4.5), in a randomised block design with three replications. Grain yield, stem length, number of spikes m-2, spike length, number of grains per spike and grain weight per spike increased in response to mineral fertilisers and lime. Both cultivars performed better under mineral fertilisation and liming treatment than under increased phosphorus fertilisation, as the availability of macro- and micronutrients increased with increasing soil pH i.e. due to phosphorus immobilisation in the highly acidic environment. In general, significant positive correlations were observed among yield components, and between grain yield and its components. Grain yield was significantly positively correlated with number of spikes m-2, spike length, number of grains per spike and stem length. Correlations between grain yield and its components under diverse agroenvironmental conditions can guide the selection of cultural practices as well as the choice of cultivars for unfavourable growing conditions.

Highlights

As one of the oldest plant species, barley has undergone substantial genetic change during its domestication
In the Republic of Serbia, according to the data from the Statistical Office of the Republic of Serbia for the period 2005– 2015, barley was grown on 86,000 ha of land, with the total annual production of about 362,000 t and the average annual yield of 3.8 t ha-1; in the last five years of the period, about 50% of the barley produced was used for livestock feed production and 50% for malting
The aim of this research was to determine the correlation between grain yield and its components, and the effect of mineral fertilisation and liming on grain yield and its components in two cultivars of spring barley grown on an acidic pseudogley

Summary

Introduction

As one of the oldest plant species, barley has undergone substantial genetic change during its domestication. In the Republic of Serbia, according to the data from the Statistical Office of the Republic of Serbia for the period 2005– 2015 (average values), barley was grown on 86,000 ha of land, with the total annual production of about 362,000 t and the average annual yield of 3.8 t ha-1; in the last five years of the period, about 50% of the barley produced was used for livestock feed production and 50% for malting. According to the report on the status of soils (Ministry of the Environment and Urban Planning, 2009), Serbia is dominated by acidic soils i.e. 13% extremely acidic soils (pH 6.5) These data indicate that acidic soils account for 82% of the total agricultural land area in the Republic of Serbia. Pseudogleys cover 500,000 ha of land (Dugalić and Gajić, 2012)

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