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Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization
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| Zeitschriftentitel: | Planta Daninha |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Planta Daninha, 37, 2019 |
| Format: | E-Article |
| Sprache: | Unbestimmt |
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FapUNIFESP (SciELO)
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| Schlagwörter: |
| author_facet |
KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. |
|---|---|
| author |
KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. |
| spellingShingle |
KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. Planta Daninha Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization Plant Science Agronomy and Crop Science Physiology Biochemistry |
| author_sort |
kruchelski, s. |
| spelling |
KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. 1806-9681 0100-8358 FapUNIFESP (SciELO) Plant Science Agronomy and Crop Science Physiology Biochemistry http://dx.doi.org/10.1590/s0100-83582019370100011 <jats:p>ABSTRACT: The aim of this study was to evaluate the establishment of the pasture of Panicum maximum cv. Aries in an environmentally protected area under levels of interspecific interaction with the weed community. The experiment started after sowing P. maximum, and it was carried out in a randomized block design with four replications and the following factors: 3 light interception levels, 2 nitrogen rates, and 7 weekly sampling dates along pasture establishment (3x2x7). The light interception treatments, determined by photosynthetically active radiation, were given by mowing weeds over the canopy of P. maximum at 40% and 70% light interception, and no mowing (uncontrolled growth of weeds and P. maximum). Topdressing application of nitrogen in the form of urea was performed or not (0 or 200 kg N ha-1). The plant community was evaluated by number of species, dry matter accumulation, and density, and phytosociological indices were determined. The relative importance and dry matter accumulation of P. maximum were greater after nitrogen fertilization, which favored the species against weed competition. In contrast, there was lower weed density without nitrogen fertilization. Mowing weeds at 40% of light interception enabled P. maximum to accumulate more dry matter, while there was no difference between mowing weeds at 70% light interception and growing the forage crop freely with weeds. Reducing weed light interception as well as nitrogen fertilization, and consequently reducing the competitive ability of the weed, favored the establishment of P. maximum in diversified agro-ecosystems.</jats:p> Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization Planta Daninha |
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10.1590/s0100-83582019370100011 |
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Biologie Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft Chemie und Pharmazie |
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FapUNIFESP (SciELO), 2019 |
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1806-9681 0100-8358 |
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Planta Daninha |
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| title |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_unstemmed |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_full |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_fullStr |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_full_unstemmed |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_short |
Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_sort |
panicum maximum cv. aries establishment under weed interference with levels of light interception and nitrogen fertilization |
| topic |
Plant Science Agronomy and Crop Science Physiology Biochemistry |
| url |
http://dx.doi.org/10.1590/s0100-83582019370100011 |
| publishDate |
2019 |
| physical |
|
| description |
<jats:p>ABSTRACT: The aim of this study was to evaluate the establishment of the pasture of Panicum maximum cv. Aries in an environmentally protected area under levels of interspecific interaction with the weed community. The experiment started after sowing P. maximum, and it was carried out in a randomized block design with four replications and the following factors: 3 light interception levels, 2 nitrogen rates, and 7 weekly sampling dates along pasture establishment (3x2x7). The light interception treatments, determined by photosynthetically active radiation, were given by mowing weeds over the canopy of P. maximum at 40% and 70% light interception, and no mowing (uncontrolled growth of weeds and P. maximum). Topdressing application of nitrogen in the form of urea was performed or not (0 or 200 kg N ha-1). The plant community was evaluated by number of species, dry matter accumulation, and density, and phytosociological indices were determined. The relative importance and dry matter accumulation of P. maximum were greater after nitrogen fertilization, which favored the species against weed competition. In contrast, there was lower weed density without nitrogen fertilization. Mowing weeds at 40% of light interception enabled P. maximum to accumulate more dry matter, while there was no difference between mowing weeds at 70% light interception and growing the forage crop freely with weeds. Reducing weed light interception as well as nitrogen fertilization, and consequently reducing the competitive ability of the weed, favored the establishment of P. maximum in diversified agro-ecosystems.</jats:p> |
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| author | KRUCHELSKI, S., SZYMCZAK, L.S., DEISS, L., MORAES, A. |
| author_facet | KRUCHELSKI, S., SZYMCZAK, L.S., DEISS, L., MORAES, A., KRUCHELSKI, S., SZYMCZAK, L.S., DEISS, L., MORAES, A. |
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| description | <jats:p>ABSTRACT: The aim of this study was to evaluate the establishment of the pasture of Panicum maximum cv. Aries in an environmentally protected area under levels of interspecific interaction with the weed community. The experiment started after sowing P. maximum, and it was carried out in a randomized block design with four replications and the following factors: 3 light interception levels, 2 nitrogen rates, and 7 weekly sampling dates along pasture establishment (3x2x7). The light interception treatments, determined by photosynthetically active radiation, were given by mowing weeds over the canopy of P. maximum at 40% and 70% light interception, and no mowing (uncontrolled growth of weeds and P. maximum). Topdressing application of nitrogen in the form of urea was performed or not (0 or 200 kg N ha-1). The plant community was evaluated by number of species, dry matter accumulation, and density, and phytosociological indices were determined. The relative importance and dry matter accumulation of P. maximum were greater after nitrogen fertilization, which favored the species against weed competition. In contrast, there was lower weed density without nitrogen fertilization. Mowing weeds at 40% of light interception enabled P. maximum to accumulate more dry matter, while there was no difference between mowing weeds at 70% light interception and growing the forage crop freely with weeds. Reducing weed light interception as well as nitrogen fertilization, and consequently reducing the competitive ability of the weed, favored the establishment of P. maximum in diversified agro-ecosystems.</jats:p> |
| doi_str_mv | 10.1590/s0100-83582019370100011 |
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| spelling | KRUCHELSKI, S. SZYMCZAK, L.S. DEISS, L. MORAES, A. 1806-9681 0100-8358 FapUNIFESP (SciELO) Plant Science Agronomy and Crop Science Physiology Biochemistry http://dx.doi.org/10.1590/s0100-83582019370100011 <jats:p>ABSTRACT: The aim of this study was to evaluate the establishment of the pasture of Panicum maximum cv. Aries in an environmentally protected area under levels of interspecific interaction with the weed community. The experiment started after sowing P. maximum, and it was carried out in a randomized block design with four replications and the following factors: 3 light interception levels, 2 nitrogen rates, and 7 weekly sampling dates along pasture establishment (3x2x7). The light interception treatments, determined by photosynthetically active radiation, were given by mowing weeds over the canopy of P. maximum at 40% and 70% light interception, and no mowing (uncontrolled growth of weeds and P. maximum). Topdressing application of nitrogen in the form of urea was performed or not (0 or 200 kg N ha-1). The plant community was evaluated by number of species, dry matter accumulation, and density, and phytosociological indices were determined. The relative importance and dry matter accumulation of P. maximum were greater after nitrogen fertilization, which favored the species against weed competition. In contrast, there was lower weed density without nitrogen fertilization. Mowing weeds at 40% of light interception enabled P. maximum to accumulate more dry matter, while there was no difference between mowing weeds at 70% light interception and growing the forage crop freely with weeds. Reducing weed light interception as well as nitrogen fertilization, and consequently reducing the competitive ability of the weed, favored the establishment of P. maximum in diversified agro-ecosystems.</jats:p> Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization Planta Daninha |
| spellingShingle | KRUCHELSKI, S., SZYMCZAK, L.S., DEISS, L., MORAES, A., Planta Daninha, Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization, Plant Science, Agronomy and Crop Science, Physiology, Biochemistry |
| title | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_full | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_fullStr | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_full_unstemmed | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_short | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| title_sort | panicum maximum cv. aries establishment under weed interference with levels of light interception and nitrogen fertilization |
| title_unstemmed | Panicum maximum cv. Aries Establishment under Weed Interference with Levels of Light Interception and Nitrogen Fertilization |
| topic | Plant Science, Agronomy and Crop Science, Physiology, Biochemistry |
| url | http://dx.doi.org/10.1590/s0100-83582019370100011 |