Comparison of Old and Modern Spring Barley Germplasm under Low and High Nitrogen Fertilisation

Author(s):  
J. A. Okeno ◽  
S. Schittenhelm
2007 ◽  
Vol 55 (4) ◽  
pp. 397-405 ◽  
Author(s):  
I. Karsai ◽  
K. Mészáros ◽  
B. Kőszegi ◽  
Z. Bedő ◽  
O. Veisz

In order to evaluate the effect of light intensity and photoperiod on heading and to establish the reaction types of barley, a set of barley germplasm of various geographical origin and growth habit was examined in a series of controlled growth chamber experiments combining two levels of light intensity with long and short photoperiod regimes. Low light intensity contributed only a limited portion to the total variance of heading and this originated to a large extent from the genotype × light intensity interaction for both photoperiods. Under the long photoperiod regime the effect of low light intensity was only apparent in a significant delay in heading. Under a short photoperiod the type of sensitivity depended on the growth habit. Low light intensity hastened plant development in 15% of the spring barley varieties, while the flowering of 44% of the winter barley varieties was significantly delayed. Establishing the reaction types for photoperiod and low light intensity in this range of barley germplasm made it possible to identify the typical reaction types of the two growth-habit groups. In addition, it also became possible to identify genotypes with contrasting or unusual combinations of these traits.


Crop Science ◽  
2002 ◽  
Vol 42 (6) ◽  
pp. 1891-1893 ◽  
Author(s):  
D. W. Mornhinweg ◽  
D. R. Porter ◽  
J. A. Webster

Agronomie ◽  
2000 ◽  
Vol 20 (7) ◽  
pp. 769-782 ◽  
Author(s):  
Rients E. Niks ◽  
Ursula Walther ◽  
Heidi Jaiser ◽  
Fernando Martinez ◽  
Diego Rubiales

2018 ◽  
Vol 131 (12) ◽  
pp. 2513-2528 ◽  
Author(s):  
Mark E. Looseley ◽  
Lucie L. Griffe ◽  
Bianca Büttner ◽  
Kathryn M. Wright ◽  
Jill Middlefell-Williams ◽  
...  

2010 ◽  
Vol 4 (3) ◽  
pp. 228-231 ◽  
Author(s):  
Phil Bregitzer ◽  
Victor Raboy ◽  
Donald E. Obert

2019 ◽  
Vol 121 (4) ◽  
pp. 102-112
Author(s):  
Anna Wirkijowska ◽  
Piotr Zarzycki ◽  
Kazimierz Noworolnik ◽  
Danuta Leszczyńska

The objective of the research study was to determine the effect of nitrogen fertilisation level on changes in the technological value of five spring barley cultivars intended for food production. A pot experiment with spring barley was performed in the greenhouse run by the Institute of Soil Science and Plant Cultivation. The barley cultivars studied were compared for the quantity and quality of grain yield including their response to three levels of nitrogen fertilisation (NH4NO3): 1, 2 and 3 g N/pot. The nitrogen fertilisation level proved to have a significant effect on the yield and quality of grains of the barley cultivars examined. With the increase in the nitrogen dose levels to 3 g/pot, a significant increase was reported in the grain yield and number of spikes per pot in all the spring barley cultivars, however there was a decrease in the weight of 1000 kernels. The levels of nitrogen fertilisation and the barley cultivars proved to have a significant impact on the contents of total dietary fibre (TDF) and (1,3)(1,4)-β-D-glucans but no interaction was found between the level of fertilisation and the cultivar. Significantly higher contents of TDF and (1,3)(1,4)-β-D-glucans were reported in the examined spring barley cultivars at a dose of 2 and 3 g N/pot compared to 1 g N/pot. With the increase in the nitrogen dose to 3 g N/pot, a significant increase was reported in the protein content in all the cultivars. Owing to the highest contents of dietary fibre and (1,3)(1,4)-β-D-glucans, and to a high protein content, the ‘Bordo’ and ‘Tocada’ varieties can be recommended as the best varieties to produce food.


2016 ◽  
Vol 62 (4) ◽  
pp. 155-158
Author(s):  
Ján Horák ◽  
Vladimír Šimanský

Abstract An experiment of different application rates of biochar and biochar combined with nitrogen fertiliser was conducted at experimental field on a Haplic Luvisol located in Nitra region of Slovakia during the growing season of spring barley (2014). The aim of this study was to evaluate the effects of biochar and biochar combined with nitrogen fertilisation on the soil organic carbon (SOC). The treatments consisted of 0, 10 and 20 t/ha of biochar application (B0, B10 and B20) combined with 0, 40 and 80 kg/ha N of nitrogen fertiliser applied (N0, N40 and N80). The results showed that SOC content at the beginning and end of the trial was always higher at the plots amended with biochar as compared to control plots (B0N0, B0N40 and B0N80); however, statistically significant effects were observed only at the beginning of the trial as well as at the end of trial in B20N40 treatments. Overall, the highest values of SOC contents were obtained at the beginning as well as at the end of the trial when 10 and 20 t/ha of biochar was applied together with 40 kg/ha N.


2013 ◽  
Vol 35 (2) ◽  
pp. 191-203
Author(s):  
U. Wojcieska ◽  
E. Wolska ◽  
M. Król

The aim of the present study was to obtain some informations on the productivity of four chosen barley varieties growing at low and high nitrogen level. Some parameters of the yield structure and nitrate reductase activity were taken into consideration. It was found that there exist some differences in the yield between the compared varieties and some differences in their reaction to a high N level in the soil. The grain yield increase of the plants treated with high nitrogen doses was above all the result of the increase in dry matter of the lateral shoots and in leaf area. Distinct increase in the number of grains per ear and 1000-grains weight was also observed. The amount of reduced nitrogen collected during the growth season depended, in part, on the nitrate reductase activity and in part on the amount of the enzyme present in the plant. A rise of the nitrogen level caused an increase in nitrate reductase activity, in all varieties. The different influence of nitrogen on the growth of green organs in the compared varieties caused differences in the amount of the enzyme present in the plants and in protein yields.


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