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Efeito do teor de água do solo e da carga aplicada pela roda compactadora na velocidade de emergência da soja - DOI: 10.4025/actasciagron.v29i5.713
| Content Provider | Semantic Scholar |
|---|---|
| Author | Modolo, Alcir José Fernandes, Haroldo Carlos Schaefer, Carlos Ernesto G. R. Santos, Nerilson Terra Silveira, João Cleber Modernel Da |
| Copyright Year | 2008 |
| Abstract | The aim of this work is to study the effects of soil water contents combined with press wheel loads of a seed drill on the emergence velocity index of soybean plants, in direct drilling systems. The experiment was a subdivided design where each unit corresponded to a different soil water content (U1, U2 e U3): 0.27; 0.31 and 0.36 kg kg -1 , and the sub-portions stood four charge levels applied by the press wheel (C1, C2, C3 e C4): 0, 50, 90 and 140 N, respectively, in a randomized block design with four repetitions. Parameters evaluated were: pondered medium diameter of the aggregates in the planted line, percentage of thin ones < 2.0 mm, plants velocity emergence index. The combination between the charges applied by the press wheel and the soil water contents did not influenced the thin percentage < 2.0 mm. The soybean plants emergence velocity was affected by the applied charges and the water contents. The maximum charge of 140 N applied by the press wheel on the seed caused a superficial incrusting of the soil. |
| Starting Page | 587 |
| Ending Page | 592 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.4025/actasciagron.v29i5.713 |
| Volume Number | 29 |
| Alternate Webpage(s) | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/download/713/335 |
| Alternate Webpage(s) | https://doi.org/10.4025/actasciagron.v29i5.713 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
