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| Farias,Marcelo S. de; Dagios,Ravel F.; Santi,Antônio L.; Cherubin,Maurício R.. |
| ABSTRACT The automatic control of section shut-off in seed drills minimizes seeding overlap and can reduce productivity losses, especially in responsive crops such as corn. In that context, this study evaluated the effect of sowing overlap on the grain yield and productivity of three corn hybrids. A DB-50 precision seed drill, with 33 rows equipped with a 16-row automatic section control, was used in this experiment. A randomized block design was applied to test three corn hybrids under two sowing conditions (without sowing overlap - WOSO; and with sowing overlap - WSO), with four replications. The analyzed variables were the number of plants per hectare, the number of cobs per hectare, cob length, the number of grains per cob, the thousand grain weight,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Precision agriculture; Section control; Plant population. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400489 |
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| Baron,Felipe A.; Corassa Junior,Geomar M.; Fioresi,Dejales; Santi,Antônio L.; Martini,Renan T.; Kulczynski,Stela M.. |
| ABSTRACT Yield potential of agricultural fields associated with plant spatial arrangement could determine the physiological quality of soybean (Glycine max L.) seeds. Thus, this study aimed to evaluate the physiological quality of soybean seeds from different yield environments and plant densities. Experiments were carried out in Boa Vista das Missões-RS, Brazil, during the 2014/2015 growing season. Yield environments were delineated by overlapping yield maps from the 2008, 2009/2010 and 2011/2012 growing seasons. The experimental design was a randomized complete block in a 2 x 5 factorial arrangement with two yield environments (low and high) and five plant densities, with four replicates. Two varieties were tested: Brasmax Ativa RR (10, 15, 20, 25 and 30... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.); Seed vigor; Yield maps; Optimization. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400237 |
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| Santi,Antônio L.; Corassa,Geomar M.; Gaviraghi,Ronei; Martin,Thomas N.; Bisognin,Mateus B.; Flora,Lisandra P. D.. |
| ABSTRACT The study aimed to evaluate different sowing densities and row spacings on grain yield and biomass in the white lupine crop, cv. ‘Comum’. The experimental design was a randomized block in a 4 x 4 factorial scheme, with four row spacings (20, 40, 60 and 80 cm) and four sowing densities in the row (10, 15, 20 and 25 plants m-1), with four replicates. The evaluated variables were: grain yield, hundred-grain weight, fresh and dry matter and the contents of nitrogen, phosphorus and potassium in the plant tissue. The highest grain yield was obtained with row spacing of 20 cm, regardless of plant density. The density of 25 plants m-1 and row spacing of 20 cm increased the fresh and dry matter yield. The adjustment of plant density and row spacing did not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lupinus albus L.; Management; Fresh matter; Dry matter. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000903 |
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| Damian,Júnior M.; Muraro,Dionei S.; Basso,Claudir J.; Silva,Alieze N. da; Pinto,Marlo A. B.; Santi,Antônio L.. |
| ABSTRACT This study aimed to evaluate the effect of different managements with pig slurry (PS) and cattle slurry (CS) on wheat dry matter and grain yields, and the potential to estimate this variation with the NDVI (normalized difference vegetation index) and NDRE (normalized difference red edge index) vegetation indices. The experiment was conducted in Frederico Westphalen-RS, Brazil, in a randomized block experimental design, in a 2 x 7 factorial scheme with four replicates and seven forms of surface and subsurface application, with and without the use of the dicyandiamide (DCD) nitrification inhibitor, distributed as follows: control without application of slurry and DCD; control without application of slurry and DCD, but scarified only with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triticum aestivum (L.); Organic waste; NDVI; NDRE. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400261 |
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