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Prevalent root-knot nematode species, M. incognita
Prevalent root-knot nematode species, M. incognita, M. arenaria, and M. javanica on weeds popular in Florida production, Portulaca oleracea (purslane), Eleusine indica (goosegrass), Aeschynomene americana (American jointvetch), Solanum americanum (American black nightshade), Cyperus esculentus (yellow nutsedge), and Amaranthus retroflexus (redroot pigweed) have been evaluated. Even though advisable as a cover crop inside the southern U.S., A. americana was evaluated as a weed following a heavy volunteer infestation of an experimental field in southeastern Florida exactly where galling was observed on roots. Portulaca oleracea and a.Meeting Abstracts 473 americana roots supported the highest variety of juveniles (J2) of all 3 species of Meloidogyne, and had the highest variety of eggs/g root for all three species. Even so, while P. oleracea supported pretty higher numbers of PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/20061416 nematode J2 in roots, galling was moderate to low for all three Meloidogyne species. In contrast, galling on A. americana was greater than for P. oleracea for all three species, and more representative in the numbers of J2 isolated from roots. Low levels of apparent galling combined with high egg production, increases the potential for P. oleracea to affect populations of those three A-61827 tosylate hydrate chemical information rootknot nematode species to a degree that may not be instantly recognized. Also. A. americana could serve as an essential host from the 3 species of root-knot nematode tested in southern regions of Florida.Therefore, consideration is becoming given to discovering option techniques to offset nematode damage. Precision agriculture analysis has indicated that soil texture is connected to reniform nematode damage and response to nematicide application. Furthermore, low nutrient availability is associated with higher nematode pathogenicity and soil texture. This locating suggests the possibility that selective nutrient management could deliver an option to nematicide application to minimize reniform damage in cotton. Greenhouse and field studies were conducted to ascertain the effects of various nutrients on reniform nematode (Rotylenchulus reniformis) pathogenicity and reproduction on cotton. Within the greenhouse study, combinations of high and low phosphorus and potassium levels have been compared. Plant development was reduced in remedies containing low phosphorus levels when when compared with the handle. Nematode eggs and vermiform counts have been lowered 25 and 57 in remedies with higher levels of phosphorus, respectively. Inside the field study, sulfur and phosphorus have been made use of as the remedies, since the soil was pretty low in these nutrients. The remedy effects have been compared with a nematicide (1, 3-dichloropropene applied at 28.1 l/ha). Only therapies with all the nematicide lowered reniform pathogenicity and reproduction. Sulfur and phosphorus treatment options didn’t effect nematode reproduction at any from the three sampling occasions or result in enhanced yield. Both studies is going to be repeated this year for additional investigation. BIOCHAR INHIBITS HOST RECOGNITION BY GLOBODERA TABACUM. LaMondia, James A. The Connecticut Agricultural Experiment Station, Valley Laboratory, 153 Cook Hill Rd. Windsor CT 06095. Biochar is definitely an engineered charcoal soil amendment that sequesters carbon in soils and has been connected with increased plant growth and yield. Charcoal has high surface location and microporosity and can be a robust adsorber of dissolved organic compounds. We investigated biochar for potential to lessen the bioavailability of host-specific hatch si.

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Author: Interleukin Related