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.
|Published (Last):||11 June 2009|
|PDF File Size:||2.92 Mb|
|ePub File Size:||19.67 Mb|
|Price:||Free* [*Free Regsitration Required]|
D The objective of this study was to evaluate methods of asexual propagation with stem cuttings in the aromatic plant species Lippia origanoides accessions CA and CALippia alba accession CA and Tagetes zypaquirensis accession CA and determine the germination behavior of Tagetes caracasana accession CAin order to contribute to the establishment of these promising aromatics as potential new crops in Colombia.
Marigold (Tagetes erecta L.) as an attractive crop to natural enemies in onion fields
Establishing propagation methods for promising aromatic species is important because there may be some relationship between the propagation method and cultural practices used and the yield and composition of essential oils and other chemical compounds. The Interpretation of ecological data: 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.
Figure 2 compares the overall development cultkvo the evaluated accessions of L. Therefore it is important to know the richness, abundance and diversity of arthropod species found in this plant, and on the surroundings of a strip, for example, once it may lead to important differences in species composition of a culture crop near or far from the marigold strips.
Anyway the data of the association of marigold plants and onion crops will certainly help organic onion growers mainly in reducing the production costs. 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: Measurements were taken every week from germinated seeds in this study, germination was defined as radicle protrusion, according to Drewes and van Staden, 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.
This indicates a beneficial effect of marigold on the onion field, especially on the dynamics of the arthropod species, which varies as onion plants are collected from more distant marigold plants. For the entomophagous the similarities is bigger Table 2 ranging between 42 and So these low natural enemies’ similarities between marigold and onion indicate that not the same but different species were found on onion near attractive plants.
For its part, the seeds of T. In this field there is a positive effect of marigold rows on natural enemy abundance and negative effect on pest insect abundance. The three substrates tested were fine coconut fiber FCFfine coconut fiber: These percentages of germination are relatively high when compared with germination in other wild species of the genus, such as Tagetes lucida, which presents a large number of sterile seeds Acosta de la Luz et al.
Upon completion of two months in the study, three cuttings were sampled at random for each experimental unit, for a total of nine cuttings evaluated per treatment; size was subject to the availability of viable material in response to each treatment and species, after the mentioned period. O papel da biodiversidade no manejo de pragas.
IBA-induced changes in antioxidant enzymes during adventitious rooting in mung vean seedlings: This is an indication that few phytophagous species were found at both plant species, except for A. How to cite this article. Regarding marigold plants Table 1 we found more richness and abundance of parasitoids compared to onion plants, since those plants produce pollen and nectar that potentially can sustain parasitoid populations Baggen, This low competitiveness is due to various factors, one of which is the lack of technology for mass propagation and crop management, and the lack of knowledge of the potential of native species that offer better alternatives for production and marketing.
Mixtures of coal ash and compost as substrates for high bush blueberry. Estudios preliminares para el establecimiento del cultivo de Tagetes lucida Cav on line. The use of this plant may contribute to management of onion pests, mainly the thrips, because the increase of the number of predators would promote lowering costs in pest erect, thus, turning the organic onion crop more sustainable.
Besides these indices, collection curves were calculated for onion samples Magurran, Thiophene occurrence in different Tagetes species: The results of this study are similar to other cultuvo in other plant species such as the Atlantic white cedar Chamaecyparis thyoides [L.
Luteolin content and antioxidant activity in micropropagated plants of Poliomintha glabrescens Gray. It was verified that in the 5a. It is largely used for food and medicinal purposes and chemical free bulbs therefore have greater value Alonso, Silencing the flavonoid pathway in Medicago truncatula inhibits root nodule formation and prevents auxin erecfa regulation by rhizobia.
This is due to a higher number of T. For some Lippia species that are in danger of extinction such as L.
Coconut fiber is a substrate with good buffering and high water retention capacities, which are useful for reducing the frequency of irrigation; and has a low bulk density Quintero et al. Labiatae is a promising thrips repellent which could be used for further testing in a pushpull system. So, there would be less thrips near marigold strips because of its repellence, not by natural enemy predation. Stock plants were established from cuttings collected in the field. There is one study that suggests the use of seeds for propagation of several wild species of Lippia from Brazil where asexual propagation methods have proved inefficient Pimenta et al.
The variedade F1 showed to smallest plant height, although the plant height doesn’t have influences on the total weight of flowers This same variety also presented the largest diameter medium of flower 70,66mm. Cravo-de-defunto Tagetes erecta L. Geographic location and conditions of the experiment The propagation and evaluation were carried out in greenhouse conditions at the facilities of the Universidad Nacional de Colombia, Bogota, located at 2, m a.
Auxin effects on root regeneration of scarlet oak seedlings.
The role of H2O2. Arthropods were grouped in two main ecological groups: Verificou-se o efeito de linhas de cravo-de-defunto Tagetes erecta L. However, these plants, culgivo is characteristic of native species that are often found in the wild, lack methods of propagation and agronomic management, which limits their use as potential new crops.