Two greenhouse experiments were conducted to examine the effect of Crotalaria juncea amendment on Meloidogyne incognita population levels and growth of yellow squash (Cucurbita pepo). In the first experiment, four soils with a long history of receiving yard waste compost (YWC+), no-yard-waste compost (YWC-), conventional tillage, or no-tillage treatments were used; in the second experiment, onl...

Both the root-knot nematode (Meloidogyne incognita) and the soilborne fungus that causes black root rot of seedling cotton (Thielaviopsis basicola) are widely distributed in cotton field soils in Arkansas. Both of these pathogens are capable of causing significant crop damage and yield loss, primarily through damage to the root systems of infected plants. When root-knot nematode or T. basicola ...

Plant-parasitic nematodes are present on maize but resistant genotypes have not been identified in Uganda. This study was aimed at determining the level of nematode resistance among F(1) hybrids, and to estimate grain yield, heterosis and yield losses associated with maize hybrids under nematode infestation. The 30 F(1) hybrids and two local checks were evaluated in a split plot design with nem...

Arthrobotrys musiformis is a nematophagous fungus with potential for the biological control of Haemonchus contortus larvae. This study aimed to identify and demonstrate the proteolytic activity of extracellular products from A musiformis cultured in a liquid medium against H contortus infective larvae. A musiformis was cultured on a solid medium and further grown in a liquid medium, which was t...

rhizosphere soil samples were collected from olive orchards of golestan, guilan, zanjan and qom provinces. fluorescent pseudomonad strains were isolated from the collected samples on king’s b medium and their phenotypic features characterized as based on the standard bacteriological methods. for all the tested strains oxidase reaction, fluorescent pigment, growth at 4?c and arginine dihydrolase...

Three damaging soybean diseases, Sclerotinia stem rot caused by a fungus sclerotiorum (Lid.) de Bary, Phytophthora root sojae, and cyst nematode (Heterodera glycines Ichinohe), are destructive to growth yield cause huge economic losses. Biocontrol is an effective way control diseases with the advantage of being environmentally friendly sustainable. To date, few reviews have reported these three...

The relationships between the structural variations of a fenisol and the plant parasitic nematode communities of sugarcane were studied along three transects. These transects, about 20 m long, started in horizon A and ended in a levelled area where horizon C began. Results were analysed with the Co-inertia analysis method, which allowed us to study simultaneously the soil and nematode data. Pro...

A wild type strain ofVerticillium lecanii and a mutant strain with increased tolerance to the fungicide benomyl were evaluated in greenhouse experiments for effects on Heterodera glycines populations. Nematodes were applied at 300 eggs and juveniles per 4,550-cm(3) pot (two soybean plants in 4,990 g loamy sand per pot) and at both 300 and 10,000 eggs and juveniles per 1,720-cm(3) pot (one soybe...

The nematophagous fungus Hirsutella rhossiliensis Minter and Brady parasitizes CriconemeUa xenoplax (Raski) Luc & Raski in many California stone fruit orchards (5). We assume that the nematode population density would be higher if the fungus were absent, but the suppressive effect of the fungus has not been quantified in the field. Biocides have been used to inhibit antagonists of pests and thu...

Aims: The aim of the study was to investigate effectiveness four isolates native Arbuscular Mycorrhizal Fungus (AMF) in improving pepper plant yield as well assess their potential for control nematodes.
 Study Design: experimental set up consisted a Completely Randomized Block Design with 5 treatments corresponding AMF– BEN10, GM142, 472, and WA330 – tested comparison untreated plants trea...