Efecto del Cultivo e Incorporacion de Tagetes erecta L. Sobre la Poblacion e Infeccion de Meloidogyne incognita (Kofoid & White) Chitwood en Chile ( Capsicum. Start Page: All titles: ” Cultivo del marigold: efecto en el control de nematodos “. ” Effect of nematode control when growing marigolds [Tagetes erecta, Chile]. Establecimiento de métodos de propagación para el cultivo de especies vegetales . The genus Tagetes is native to the New World and the species T. erecta.

Author: Meztizshura Samukree
Country: Paraguay
Language: English (Spanish)
Genre: Education
Published (Last): 25 April 2018
Pages: 295
PDF File Size: 5.47 Mb
ePub File Size: 6.21 Mb
ISBN: 442-8-48128-927-2
Downloads: 99927
Price: Free* [*Free Regsitration Required]
Uploader: JoJonris

Salud UIS 41, Seedlings were then transplanted to the field two months later to establish stock plants. In summary, erectta CA of L. Anyway the data of the association of marigold plants and onion crops will certainly help organic onion growers mainly in reducing the production costs.

Germination tests were performed for T.

Tagetes erecta

Organic onion farming is expected to increase in the state due to the increasing demand. Silencing the flavonoid pathway in Medicago truncatula inhibits cultiv nodule formation and prevents auxin transport regulation by rhizobia.

The analysis of similarity gagetes between marigold developmental stages Table 2 indicated that there is greater similarity between the onset and peak flowering periods for phytophagous Based on previous observations on the yield and composition of essential oils and bioactivity tests on plant pathogens unpublished datafive accessions of the four species under study were selected, namely, L.

It was verified that in the 5a.

Cultivo del marigold: efecto en el control de nematodos

Marigold seed was obtained directly from field collection on the organic farm selected and because the grower has cultivated it for years, there is no way to determine the cultivar. It is interesting to see that the accession CA of L. Despite the higher variation, the number of entomophagous arthopods m -2 may explain this result, as the number of natural enemies was lower in plants localized far from marigold row, therefore resulting in higher amounts of herbivores.


For the determination of these parameters, arthropods presenting very low occurrence one or two individuals during the entire sampling period were not included in analysis. Hence, we found higher diversity of both phytophagous and entomophagous species on onion plants close to marigold rows, but increased herbivore abundance and decreased natural enemy abundance on onion plants at greater distances from marigold.

Rev Cubana Plant Med. Plant odours with potential for a push-pull strategy to control the onion thrips, Thrips tabaci. De Oliveira Pierre, L. The rooting of cuttings of L.

Plant regeneration via organogenesis in marigold. Marigold Tagetes erecta L. Therefore, marigold rows next to onion fields resulted in higher number of entomophagous species, potentially enhancing the natural control of onion pests.

The propagation and evaluation were erectta out in greenhouse conditions at the facilities of the Universidad Nacional de Colombia, Bogota, located at 2, m a. Therefore, the main phytophagous species were more abundant in onion plants 30 m from marigold, while the main predators were more abundant in plants close to the attractive species.

The aim of this study was to determine the effect of marigold plants near or far from organic onion cultivation for maintenance of natural enemies, and study the arthropod composition and its abundance on onion and marigold fields.

Thiophene occurrence in different Tagetes species: We sampled onion plants at 5 m near 30 m far and in the marigold plant strip. The role of H2O2. Black and Zimmerman proposed that inorganic substrates with coal slag could be suitable for rooting cuttings.

Tagetes erecta – Wikispecies

Cuttings were taken from flowering stock plants. Among the promising culgivo plants for Colombia based on quality and bioactivity of essential oils are species of the Verbenaceae family such as Lippia alba Mill.

Seeds for germination tests were harvested two d before the tests from 4 month-old stock plants. Parasitoid dw, in general, was very low in onion plants, but much lower far from the marigold strip Table 1. Establishment of propagation methods for growing promising aromatic plant species of the Lippia Verbenaceae and Tagetes Asteraceae genera in Colombia.

The higher diversity index was observed in marigold during full bloom H’, Table 1when the predator Orius insidiosus was most abundant, as well as herbivore Aphis fabae Scopoli Hemiptera: This study, however, only included abundance of thrips nymphs and syrphid larvae, and there may have been differences in the abundance of other phytophagous and predatory species. Due to the low perceptibility and complexity of seed selection and management in these species, the propagation methods used for evaluation were vegetative asexual reproductionexcept for the species T.


Data from onion samples were taken at 5 m and 30 m from the marigold strip Figure 1.


For herbivores the values are similar in relation to the distance from marigold, but become lower as the flowering stage advance. The Interpretation of ecological data: Entomologia Experiementalis et Applicatav.

Some organic growers seed marigold for its pollen and nectar, which increase natural enemy fecundity and survival Baggen, In general, this species registered the highest values for root length, number of roots and root dry weight among all the species analyzed and in the FCF substrate Tab. The reports indicate that the seeds of L.

Lippia origanoides chemotype differentiation based on essential oil GC-MS and principal component analysis. Plants surrounding onion fields, and that are attractive to natural enemies, may be a good option to farmers, since they may lead to increased diversity of arthropod species and, consequently, the natural control of pest populations.

Moreover marigold plants host other phytophagous species that are alternative prey for entomophagous species. Both greater abundance and higher species richness of entomophagous species predators and parasitoids were found in plots near marigold than in plots far from marigold. Ediciones Mundi Prensa, Madrid. In the same way, longer roots were observed when the hormone was not applied.