Jacobs Journal of Plant Biology

Influence of Nitrogen Fertilization on Biomass Accumulation of the Brewer’s Spring Barley

*Elzbieta Wolejko
Department Of Plant Biology, Poland

*Corresponding Author:
Elzbieta Wolejko
Department Of Plant Biology, Poland
Email:e.wolejko@pb.edu.pl

Published on: 2019-02-19

Abstract

The objective of this study was to analyses the nitrogen fertilization effect on biomass accumulation and grain quality of the brewer’s barley. The study was conducted in randomized blocks with 4 replicates in Warsaw Agriculture University Experimental Field in Chylice. The experimental factors were: three cultivars of spring barley (Maresi, Poldek and Rasbet of chaffy grain) and nitrogen doses (0, 30, 60, 90 kg N/ha). The size of grain yield and protein content in the grain of brewer’s spring barley is closely dependent on nitrogen fertilization. The highest nitrogen fertilization used in the experiment (90 kg/ha) increases the protein content in the grain above the allowed norm, making it incompetent raw material for the brewing industry. The condition to produce high dry matter by the plants of brewer’s spring barley is constant and high relative growth rate since the beginning of the growing season, so the growing of barley should be focused on obtaining fast-growing form.

Keywords

Nitrogen Fertilization; Hordeum Vulgare; Grain Quality; Biomass Accumulation; Cgr; H

Introduction

Barley (Hordeum vulgare L.) is the most produced cereal of great economic importance. It is grown in a wide geographic range under different conditions [1, 2]. Barley was and still is very important feed grain, not only in Poland but also throughout Europe. However, in the structure of seeding, the share of spring barleys is small and its cultivation aims mainly to acquire raw material for barley malt production, required to produce beer. Taking into account the use of barley for feed, the main emphasis is placed on the cultivation of winter barley. It is commonly known that the potential of winter cultivars of this species exceeds that of spring form by at least 1 t/ha. However, in Poland, due to low winter hardiness of winter, spring forms dominate it the cultivation [3].Nitrogen is one of the main factors modifying the growth, development and productivity of crops [4]. It affects the quality parameters of grain, hence the need to respect the principles of the proper allocation of the total dose of that component planned for barley. It is applied in proportion to the current food needs of crops, especially in the late stages of development [2]. It should be emphasized that the specific protein is associated not only with reduced nitrogen fertilization, but also with relatively large yields obtained under normal conditions of fertilization with phosphorus, potassium and magnesium. In the cultivation of malting barley, the ratio of N : P : K, should be 1 : 2 : 3. Determining the optimal dose of nitrogen is quite difficult and depends on the accurate determination of nitrogen in the soil. Incorrect determining the dose and increasing the amount of nitrogen can affect significantly the leaves size, their durability and, a large extent, processes determining biomass and yielding [5].