Authors:Zoltán Sebestyén, Ferenc Lezsovits, Emma Jakab, and Gábor Várhegyi
method to find the correlations between the experimental data.
In this study, woody (black locust, poplar and willow) and non-woody (energy grass and wheat straw) biomass samples
Lu, C., Ma, J., Chen, X., Zhang, X., Shi, Y., Huang, B. (2010): Effect of nitrogen fertilizer and maize straw incorporation on NH 4 + - 15 N and NO 3 − - 15 N accumulation in black soil of north east China among three consecutive cropping cycles. J
Authors:M. Jayakumar, S. Khrisnasamy, and N. Thavaprakash
Sivakami (2000): Incorporation of combine harvested straw and stubble and time of application of nitrogen to lowland rice. M.Sc. (Ag.) Thesis, Tamil Nadu Agricultural University, Coimbatore, India.
Authors:János Kátai, Thomas Döring, Magdolna Tállai, Andrea Balla-Kovács, István Henzsel, Marianna Makádi, Zsolt Sándor, and Imre Vágó
, D. , Arlauskiene , A. , Maikteniene , S.
2013 . Soil mineral nitrogen and microbial parameters as influenced by catch crops and straw management . Zemdirbyste Agriculture , 100 ( 1 ) 9 – 18
Authors:E. Kovács, P. Merész, Z. Kristóf, and E. Németh-Szerdahelyi
Colour, texture, pectin autolysis, membrane permeability and microstructure (SEM, TEM), β-galactosidase and polygalacturonase were studied in apricots (cv. Magyar kajszi) harvested in mature green, straw yellow, bright orange and deep orange stages. The L* increased from mature green to straw yellow then decreased from straw yellow to deep orange state. The a* values increased with ripening. The bright and deep orange apricots were significantly softer than the mature green and straw yellow ones and the membrane permeability increased with ripening. The presence of β-galactosidase enzyme was proved by immunoblotting analysis using monoclonal anti-β-galactosidase clone GAL-13 (Sigma) in all ripening stages. The enzyme activity was very low in mature green stage and increased significantly (P>95%) with increasing ripeness and during storage. The PG activity was very low in the mature green apricot. A significant (P>95%) increase was observed in the straw yellow apricot and in the riper fruits. The mature green apricot showed a regular, the straw yellow and bright orange samples showed a moderately regular tissue structure, while the tissue of the deep orange apricot collapsed (SEM). The cell wall and the middle lamella of the green apricot (TEM) were intact. Generally, there were intact cytoplasm membranes with some damaged parts. In the straw yellow apricot, the cell wall started to loosen, the middle lamella lost pectic polysaccharides. The structure of the cytoplasm was not recognisable, the tonoplast and the cytoplasm membrane were injured. The cell wall of the bright orange apricot was similar to that of the straw yellow ones. The middle lamella dissolved and hairy, fibrillar structure of cell wall was found in the deep orange samples.
Authors:B. Gorjanović, M. Kraljević-Balalić, and S. Janković
Nitrogen use efficiency parameters of twelve bread wheat cultivars were studied in nine environments comprised of three nitrogen applications tested over three years. An environment-by-trait association biplot and a trait-association by environment biplot were applied to understand environmental effects on these traits and relationships among them. The following trait associations were relatively stable across environments: negative associations of straw nitrogen content vs. nitrogen remobilization efficiency, straw nitrogen content vs. nitrogen harvest index and a positive association of nitrogen remobilization efficiency vs. nitrogen harvest index. The selection of genotypes with a high nitrogen harvest index and nitrogen remobilization efficiency could be used in the development of cultivars with desired nitrogen use efficiency. A low straw nitrogen content can also be used as a reliable and cost-effective indicator in the selection of genotypes with high nitrogen use efficiency.