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| DOI: | 10.2134/agronj2015.0565 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/articles/108/4/1531
Last checked: 08/03/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/108/4/1531
Last checked: 08/03/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | da Silveira Pontes, Laíse;
Giostri, André Faé;
Baldissera, Tiago Celso;
Barro, Raquel Santiago;
Stafin, Giliardi;
Porfírio-da-Silva, Vanderley;
Moletta, José Luiz;
de Faccio Carvalho, Paulo César |
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| Author Affiliation: | da Silveira Pontes, Stafin, and Moletta: IAPAR - Agronomic Institute of Paraná, Ponta Grossa; Giostri: UFPR - Federal University of Paraná, Curitiba-PR; Baldissera: Epagri, Lages-SC; Barro, de Faccio Carvalho: UFRGS - Federal University of Rio Grande do Sul, Porto Alegre-RS; Porfírio-da-Silva: Embrapa Florestas, Colombo, Brazil |
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| Title: | Interactive effects of trees and nitrogen supply on the agronomic characteristics of warm-climate grasses |
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| Section: | Crop economics, production & management
Other records with the "Crop economics, production & management" Section
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| Source: | Agronomy Journal. Vol. 108, No. 4, July/August 2016, p. 1531-1541. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy |
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| # of Pages: | 11 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/108/4/1531
Last checked: 11/11/2016
Notes: Abstract only |
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| Keywords: | TIC Keywords: C-4 plant; Cynodon; Dry weight; Eucalyptus; Nitrogen fertility; Nitrogen level; Nutrient concentration; Paspalum notatum; Shade assessment; Shade stress; Urochloa
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| Abstract/Contents: | "Plant adaptations to cope with shade may vary according to the degree of shade tolerance and nutrient availability for each species. Studies of different understory species and their responses to combined shade and N effects are important to identify ways to optimize the quantity and quality of forage production. Our objective was to measure the dry matter yield (DMY) and nutritive value of six C4 grasses grown in two systems (full sunlight [FS] vs. a naturally shaded system composed of Eucalyptus dunnii Maiden trees) with two N levels (0 vs. 300 kg N ha-1yr-1) using the same target sward conditions (i.e., 50% depletion of the canopy height set by 95% light interception). Over 3 yr, the decreases in DMY under shade compared with FS ranged from 7% [Urochloa brizantha (Hochst. ex A. Rich) R.D. Webster] to 56% (Cynodon spp.) in fertilized treatments and between 11% (Paspalum notatum Fluegge) to 46% (Cynodon spp.) in treatments without N. The N effect was more important to the nutritive value of the forage than the shade effect, particularly for crude protein (CP, +46 g kg-1 with N supply), acid detergent fiber (ADF, -46 g kg-1) and leaf proportion (+11.2%). However, most of the species displayed higher leaf digestibility under shade due to decreases in ADF. Even with intense shading (light approximately 48% of unshaded), the digestible DMY and CP yield under trees were, on average, 70 and 71% of the 6.8 and 1.4 t ha-1 recorded in FS, respectively." |
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| Language: | English |
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| References: | 57 |
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| Note: | Pictures, color
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
da Silveira Pontes, L., A. F. Giostri, T. C. Baldissera, R. S. Barro, G. Stafin, V. Porfírio-da-Silva, et al. 2016. Interactive effects of trees and nitrogen supply on the agronomic characteristics of warm-climate grasses. Agron. J. 108(4):p. 1531-1541. |
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| DOI: 10.2134/agronj2015.0565 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/108/4/1531
Last checked: 08/03/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/108/4/1531
Last checked: 08/03/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2212646a |
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