Potencial alelopático de plantas de cobertura verde de inverno sobre o crescimento do porta-enxerto VR043-43

Bettoni, Jean Carlos; Gardin, João Peterson Pereira; Feldberg, Nelson Pires; Dalbó, Marco Antônio

doi:10.1590/s0034-737x2012000100019

Cited by 3 publications

(3 citation statements)

References 4 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bianchi et al (2011) highlight the importance of R. sativus as weed species when competing with soybean varieties, and identified that some varieties are less affected by competition with this weed species than others. As a plant suppressor, Bettoni et al (2012) reported no allelopathy of extracts of R. sativus on the establishment of Vitis vinifera. On the other hand, Uygur et al (1990) reported that extracts of R. sativus completely inhibited the germination of 4 crop plants and 11 weed species; Inderjit & Mallik (2002) also highlight some allelopathic effects of this weed species.…”

Section: Resultsmentioning

confidence: 99%

Infestation of weed species in pre-planting of soybean in succession to winter crops

Concenço¹,

Silva²,

Tomazi³

et al. 2013

Planta daninha

View full text Add to dashboard Cite

-This study aimed to evaluate different crops and plant species planted after soybeans for one year, in terms of their potential to inhibit the occurrence of weed species. The following crops that were planted as second crop after soybeans were evaluated: (1) corn (Zea mays) planted at spacing of 90 cm between rows, intercropped with Brachiaria ruziziensis in the inter-rows; (2) sunflower (Helianthus annuus); (3) crambe (Crambe abyssinica); (4) radish (Raphanus sativus); (5) rapeseed (Brassica napus); and (6) winter fallow -no plantation after soybeans. Phytosociological characterization of weed species was carried out at the pre-planting of soybeans in the following cropping season. Estimations of relative abundance, relative frequence, relative dominance and Importance Value Index were made for each species present. Areas were also intra-characterized by the diversity coefficients of Simpson and modified Shannon-Weiner, and areas were compared using the Jaccard similarity coefficient for presence-only, by multivariate cluster analysis. In the short-term (a single cropping season), cultivation of winter crops do contribute for lower occurrence of weed species at the pre-planting of soybeans on the subsequent cropping season. The suppressive effects depend both on the species grown in the winter and in the amount of straw left on the soil by these winter crops. Radish was more efficient in inhibiting the occurrence of weed species and rapeseed showed composition of infestation similar to that observed at the area under fallow.Keywords: corn, sunflower, radish, crambe, rapeseed, phytosociology.RESUMO -Objetivou-se com este estudo avaliar distintas espécies vegetais cultivadas na segunda safra, quanto ao seu potencial de inibir a ocorrência de espécies daninhas. As seguintes culturas foram avaliadas na segunda safra após soja: (1) milho (Zea mays) com espaçamento entre linhas de 90 cm; (2) girassol (Helianthus annuus); (3) crambe (Crambe abyssinica); (4) nabo forrageiro (Raphanus sativus); (5) canola (Brassica napus); e (6) pousiosem plantio de inverno em sucessão à soja. A caracterização fitossociológica das espécies daninhas foi feita no pré-plantio da safra de soja subsequente. Estimativas de abundância, frequência e dominância relativas, bem como do valor de importância, foram obtidas para cada espécie em cada área. As áreas foram intracaracterizadas pelos coeficientes de diversidade de Simpson e de Shannon-Weiner modificado e comparadas pelo coeficiente binário de similaridade de Jaccard, por análise multivariada de agrupamento. No curto prazo (um ano de distintos cultivos), o uso de oleaginosas de inverno contribuiu para a menor infestação por plantas daninhas na soja em sucessão, e os efeitos supressivos dependem tanto da espécie cultivada no inverno quanto do volume de palhada residual deixada por essa cultura. O nabo forrageiro foi o mais eficiente em inibir a ocorrência de espécies daninhas, e a canola apresentou composição da infestação similar à observada na área de pousio.

show abstract

Section: Resultsmentioning

confidence: 99%

Infestation of weed species in pre-planting of soybean in succession to winter crops

Concenço¹,

Silva²,

Tomazi³

et al. 2013

Planta daninha

View full text Add to dashboard Cite

show abstract

“…No muchos de los ensayos de laboratorio prestan atención a los factores edáficos y climáticos, la ecología microbiana, la dinámica de nutrientes, la densidad y otras características bióti-cas de la planta agresiva (Inderjit & Weston, 2000), por lo que resulta difícil comprobar su incidencia bajo condiciones de campo. En algunos casos se han encontrado efectos alelopáticos de coberturas verdes sobre porta-injertos de vid, pero utilizando extractos vegetales obtenidos en laboratorio (Bettoni et al, 2012). Inderjit & del Moral (1997) afirman que es esencialmente imposible separar alelopatía de competencia por recursos en los sistemas naturales, y que cualquier esfuerzo por separarlos bajo condiciones experimentales creará condiciones que nunca ocurrirían naturalmente.…”

Section: Contenido De Sustancias Alelopáticas En Los Lixiviadosunclassified

Potencial alelopático de lixiviados de cultivos de cobertura y malezas sobre plantas jóvenes de vid

Uliarte

Parera

Monte

et al. 2016

AgriS

View full text Add to dashboard Cite

resumenLas interacciones entre la vid y especies herbáceas pueden involucrar competencia por recursos y alelopatía. Se presume que determinados cultivos de cobertura y malezas poseen efectos alelopáticos sobre el crecimiento de las cepas. Los objetivos del trabajo fueron: a) evaluar el efecto de los lixiviados de riego de diversas coberturas vegetales sobre plantas de vid y b) determinar su efecto inhibitorio sobre la germinación de semillas. Se efectuaron experimentaciones de campo e invernadero, con cultivos de cobertura y vides en macetas. Se utilizaron 11 lixiviados de diferentes cubiertas vegetales y un testigo con suelo descubierto, con un diseño completamente al azar y cinco repeticiones. Se evaluó expresión vegetativa y productiva de las vides. Se realizaron pruebas de germinación sobre semillas, utilizando lixiviados del riego y diferentes concentraciones de la solución acuosa. No se detectó efecto negativo en el crecimiento vegetativo ni en la producción de uva en plantas jóvenes de vid, ni tampoco en la germinación de otras especies vegetales. El ensayo en macetas evidenció que existe una interacción entre las coberturas y el suelo, mediante la cual el balance de nutrientes es alterado según la especie, y puede afectar positiva o negativamente el crecimiento de las vides. and b) to determine its inhibitory effect on seed germination. Greenhouse and field experiments were conducted with cover crops and potted vines. Eleven leachates from different green covers and a bare soil control were tested with a randomized design and five replicates. The vegetative and productive expression of the vines was evaluated. Seed germination tests were conducted using leachate from irrigation and different concentrations of the aqueous solution. Adverse effects were not detected in the vegetative growth, the grape production in young vines or the germination of other plant species. The pot trial showed that there is an interaction between cover crops and soil, whereby the balance of nutrients is altered depending on the species. This balance can positively or negatively affect the growth of the vines.

show abstract

“…The use of soil cover in the orchards reduces and even eliminates the use of herbicides. The effect of cover plants on weeds may be suppressant by means of plant mass deposition and even allopathic effect with the release of allele chemical that inhibit the growth of weeds (Bettoni et al, 2011;.…”

Section: Introductionmentioning

confidence: 99%

Vegetative, productive and qualitative performance of grapevine "Cabernet Sauvignon" according to the use of winter cover crops

et al. 2016

Self Cite

View full text Add to dashboard Cite

To study the effect of winter cover crops on the vegetative, productive and qualitative behavior of "Cabernet Sauvignon" grapevines, an experiment was conducted in two wine harvests by sowing different species of winter cover crops and additional treatments with manual weeding and mechanical mowing in an experimental vineyard located at the Experimental Station of Epagri in Videira, state of Santa Catarina, Brazil. Plant attributes of the grapevine, such as number of rods and weight of pruned material and number of branches per plant. At the time of skin color change, petioles of recently matured leaves were collected for analysis of the levels of N, P, K, Ca, Mg, Fe, Mn, Zn and B. Moments before harvest, 100 grape berries were collected randomly to determine the total soluble solids, titratable acidity and pH. At harvest, the number of bunches per branch, the number and mass of clusters per plant and the average mass of clusters per plot were determined. Fresh and dry matter yields of the cover crop and weed plants were also determined when coverage reached full bloom. The winter cover crops did not alter the yield and quality of "Cabernet Sauvignon" grapes and showed no differences from each other for the management of spontaneous vegetation by hand weeding or mechanical mowing. Rye and ryegrass are effective alternatives for weed control alternatives. The species of white and red clover present difficulty in initial establishment, producing a small amount of biomass.

show abstract

Potencial alelopático de plantas de cobertura verde de inverno sobre o crescimento do porta-enxerto VR043-43

Cited by 3 publications

References 4 publications

Infestation of weed species in pre-planting of soybean in succession to winter crops

Infestation of weed species in pre-planting of soybean in succession to winter crops

Potencial alelopático de lixiviados de cultivos de cobertura y malezas sobre plantas jóvenes de vid

Vegetative, productive and qualitative performance of grapevine "Cabernet Sauvignon" according to the use of winter cover crops

Contact Info

Product

Resources

About