Emergência e crescimento de plantas de cobertura em função da profundidade de semeadura

Pacheco, Leandro Pereira; Pires, Fábio Ribeiro; Monteiro, Fernando Pereira; Procópio, S. de O.; Assis, Renato Lara de; Silva, Gilson Pereira; Filho, Alberto Cargnelutti; Carmo, M.L.; Petter, Fabiano André

doi:10.5433/1679-0359.2009v30n2p305

Cited by 9 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This result can be attributed to the physical effect of the mulch on the survival of the seedlings, especially for species with small levels of reserves in the seeds that may not be sufficient to guarantee the survival of the seedling in the space travelled within the mulch until it has access to light and starts the photosynthesis process (MONQUERO et al, 2012). These results corroborate those of Pacheco et al (2009), in which Indian goosegrass plants sown at depths of 10 and 15 cm did not germinate; this finding was justified by the small seed size of this species. For the Indian goosegrass, the increase in the amount of straw and the sowing depth also had a negative impact on the emergence of the plants (Figure 2).…”

Section: And E Indica (Indian Goosegrass)supporting

confidence: 81%

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

Malardo

Monquero

Santos

et al. 2017

SCA

View full text Add to dashboard Cite

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence Influência da profundidade de semeadura e da quantidade de palha de cana-de-açúcar na emergência de Chloris polydactyla e Eleusine indica e controle por herbicidas aplicados em pré-emergência AbstractThe objective of this study was to evaluate the effect of the sowing depth and amount of sugarcane straw on the soil on the emergence of Chloris polydactyla ('capim-branco') and Eleusine indica (Indian goosegrass) and to determine the efficacy of herbicides applied pre-emergence in the control of these species under different straw amount and rainfall regime conditions. The experiments were conducted in a completely randomized design with four replications. In the first experiment, the effects of six sowing depths (0.5, 1, 2, 4, 8, and 10 cm) and six sugarcane straw amounts (0, 1, 2, 4, 8 and 10 t ha -1 ) were assessed on the emergence of Indian goosegrass and 'capim-branco' in a 6 x 6 factorial arrangement. In the second experiment, the efficacy in the control of these species was evaluated for one control without herbicide and five treatments (indaziflam, metribuzin, tebuthiuron, indaziflam + metribuzin, and indaziflam + tebuthiuron) applied pre-emergence over four straw amounts (0, 1, 2, and 4 t ha -1 ) in a 6 x 4 factorial arrangement. This experiment was evaluated under two rainfall regimes in separate experiments (simulation of 20 mm of rainfall 1 or 10 days after herbicide application). The 'capim-branco' showed a marked reduction in emergence beginning at 2 t ha -1 of straw and a 2 cm sowing depth. For the Indian goosegrass, the decline in emergence mainly occurred beginning at 4 t ha -1 of straw and a 4 cm sowing depth. Only some of the Indian goosegrass plants emerged at the greater sowing depths (8 and 10 cm) and straw amounts (8 and 10 t ha -1 ), whereas no emergence of the 'capimbranco' was observed under these conditions. The treatments with sowing at a 1 cm depth and with 0, 1, 2, and 4 t ha -1 of straw provided the highest emergence percentage for the species. Application of the herbicide indaziflam alone was the only ineffective treatment for the control of the weeds regardless of the amount of straw and the water regime used. We concluded that the increase in the sowing depth and the amount of straw significantly reduced the emergence of the species and that the presence of straw and the dry period interfered with the herbicide efficacy. Key words: Indian goosegrass. 'Capim-branco'. Sugarcane. Straw. ResumoObjetivou-se com esse trabalho avaliar o efeito da profundidade de semeadura e da quantidade de palha de cana-de-açúcar sobre o solo na emergência de Chloris polydactyla (capim-branco) e Eleusine indica (capim pé-de-galinha), assim como determinar a eficácia de herbicidas aplicados em pré-emergência no controle dessas espécies, sob diferentes quantidades de palha e regimes de precipitação pluvial. Os experimentos foram real...

show abstract

Section: And E Indica (Indian Goosegrass)supporting

confidence: 81%

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

Malardo

Monquero

Santos

et al. 2017

SCA

View full text Add to dashboard Cite

show abstract

“…Pearl millet seed should be planted into moist soil with soil temperatures between 18 to 24 ° C (Pereira Filho et al ., 2016). Recommended planting depth is between 2 and 4 cm, depending upon the soil type and soil water content at the time of planting (Kichel and Miranda, 2000; Pacheco et al , 2009a; 2009b; Pereira Filho et al ., 2016). Planting depth is usually greater in sandy soils with low water-holding capacity, and shallower in heavier textured soils with greater water-holding capacity.…”

Section: Pearl Millet Production Practicesmentioning

confidence: 99%

Pearl Millet Production Practices in Brazil: A Review

2017

View full text Add to dashboard Cite

SUMMARYPearl millet [Pennisetum glaucum (L.) R. Br.] is grown as a forage, cover and grain crop in Brazil. Historically, forage production has the most important use, but during the last 30 years, the use as a cover crop in no-till soybean [Glycine max (L.) Merrill] production systems has expanded greatly and is currently used on over 5 million ha. Grain production as livestock feed is presently of minor importance but expanding. This review cites 125 references and documents pearl millet research conducted in Brazil which is largely published in Portuguese. The review addresses recommended pearl millet production practices for different uses, including stand establishment, row spacing and plant population, fertiliser and pest management, and the use of pearl millet in rotation and as a cover crop between soybean or maize (Zea mays L.) production to reduce crop losses from nematode infestation. It is concluded that greater research investment in crop improvement, fertiliser and pest management, nematode management, and forage/grain utilisation is needed to fully take advantage of pearl millet to meet feed, food and soil improvement needs in Brazil. In addition, creation of a database on pearl millet production, marketing and utilisation to assist farmers and grain merchandisers, and increased extension programming on pearl millet production is needed.

show abstract

“…Porém, em nova avaliação aos 40 DAS, com exceção da semeadura com 8 cm de profundidade que não obteve plântulas emergidas, não houve diferença significativa entre os resultados obtidos para as profundidades de semeadura (Tabela 2). Em partes, os resultados podem ser verificado no trabalho de Pacheco et al (2009), que encontrou aos 20 dias após a semeadura valores semelhantes em algumas espécies de plantas de cobertura, onde constatou que o aumento da profundidade de semeadura a partir de 8 cm resultou na diminuição dos valores em mais de 50% das plantas, comparadas a 1 cm de profundidade. Já aos 40 dias essa porcentagem sofreu uma tendência a diminuir, tornando mais equilibrado os valores.…”

Section: Resultsunclassified

Diagnóstico Da Cafeicultura Dos Municipios De Alfenas, Campestre, Paraguaçu E Serrania

Gomes¹,

Franco²,

Silva³

et al. 2019

Agronomia: Elo Da Cadeia Produtiva 5

View full text Add to dashboard Cite

Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

show abstract

Emergência e crescimento de plantas de cobertura em função da profundidade de semeadura

Cited by 9 publications

References 10 publications

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

Influence of the sowing depth and amount of sugarcane straw on the emergence of Chloris polydactyla and Eleusine indica and their control by herbicides applied pre-emergence

Pearl Millet Production Practices in Brazil: A Review

Diagnóstico Da Cafeicultura Dos Municipios De Alfenas, Campestre, Paraguaçu E Serrania

Contact Info

Product

Resources

About