In total, 140 populations of the genus Meloidogyne collected from representative horticultural regions Spain and maintained at Department Agroecology, Institute Agrarian Sciences, Madrid were characterized using perineal morphology, sequenced amplified region polymerase chain reaction with species-specific primers, bioassay. Using a modified North Carolina differential host test as basis, 13 did not fit into published race scheme. These had very limited ranges, reproducing only on...

Fungal volatile organic compounds (VOCs) with biological activity produced by entomopathogenic fungi ( Beauveria bassiana and Metarhizium robertsii ) isolated from banana fields (Canary Islands) the nematophagous fungus Pochonia chlamydosporia , used in biocontrol of root-knot nematodes, repel weevil (BW), Cosmopolites sordidus (Germar, 1824) under laboratory conditions. BW is main pest Musa spp. (Linnaeus, 1753)). Its cryptic behavior makes it difficult to manage. Repellent VOCs alter can...

Semi‐quantitative data of peak intensities in infrared (IR) spectra humic acids (HAs) from semiarid soils under contrasting environmental conditions (vegetation type, geological substrate and local climate) were analysed by multivariate treatments. Resolution‐enhanced IR (applying a second derivative‐based subtractive operator) showed typical lignin pattern, which was coded to obtain an index used classify the degree diagenetic alteration moiety HA fraction. Partial least squares regression...

Abstract This laboratory study evaluates the biofumigant effect of different organic materials with aim developing non‐chemical alternatives for management Meloidogyne incognita (Kofoid & White) Chitwood populations. Sources material from production system were selected reducing agricultural residue accumulation problems as well decreasing costs due to use chemical fertilizers and pesticides. The residues pepper, strawberry, tomato cucumber crops, orange juice industry residues,...

Tecia solanivora is the most prevalent pest causing damage to potato crops in fields Canary Islands, but even more so postharvest storage period. However, currently, there are no authorised chemical insecticides for facilities. Analysis of viability predator mite Blattisocius tarsalis as a biological control agent this moth was carried out. A study temperature effect showed B. maintains predatory capacity range 10–27 °C. Though activity increases with temperature, differences mortality rates...

The Guatemalan potato moth (Tecia solanivora) is designated a quarantine pest by the European Union, causing severe production losses in crops. No effective chemical control alternatives are currently available, and cultural techniques unable to reduce harvest acceptable levels. With focus on biological control, two egg parasitoids (Trichogramma euproctidis Trichogramma achaeae) were selected evaluated for use under field storage conditions. Laboratory assays (choice no-choice) indicated...

Fifteen percent of harvested bananas are discarded daily in the Canary Islands at packing houses because marketing standards, mainly based on their appearance, or retired to avoid falls market price bananas. This fruit is an environmental issue, and green banana flour (GBF) interesting management alternative for it. In this paper, artisanal process obtaining GBF was optimized. The study physicochemical nutritional characteristics gluten-free indicated a high contribution starch, fiber,...

To study the characteristic N-forms of humic-type materials, samples sapric peat from Galicia (northern Spain) were heated at 350 °C for 60, 90, 120, 150 and 180 s, studied by Curie-point Py-GC/MS, solid-state CPMAS 13C-NMR 15N-NMR spectroscopies. NMR analysis in progressive heating stages showed concentration heterocyclic N-forms, maximum structural transition amide-to-heterocyclic forms being observed 120 s (56% N 34% aromatic C). Under more drastic conditions all depleted. Correlation...

Abstract Quantitative changes in soil organic matter (SOM) from undisturbed Mediterranean forests and neighbouring deforested sites were assessed by analysing lipids humic acids (HAs), total studying 80 variables. Changes the composition of free reflected vegetation types, whereas HAs analysed visible 13 C NMR spectroscopy, sodium perborate degradation Curie‐point pyrolysis indicated extent structural alteration lignin soil. The molecular fractions released techniques applied to showed that...

The golden twin-spot moth (Chrysodeixis chalcites) is one of the most important pests in banana production on Canary Islands (Spain). efficacy different biorational insecticides based bioenzyme complexes (Intruder®), plant extracts: Rutaceae and Piperaceae (Avenger®), Lauraceae (BioKnock®), cinnamon, citronella, Menta (Cinamite®), Alliaceae Solanacea (Garlitrol-Forte®), citrus (Prevam®), neem oil (Indasol®) was assessed against C. chalcites. Laboratory assays included: choice (repellent...

The complex molecular assemblages were analysed in the soil gas phase after applying pine forest wastes (PFW) or sugarbeet vinasses (SBV) for soil-borne crop pests' management. For this purpose, solid-phase micro-extraction (SPME) and chromatography (GC) used coupled with mass spectrometry (MS). organic applied either to Calcic Entisol Haplic Arenosol moistened at field capacity was covered polyethylene sheet 28-30 days retain volatiles. PFW-treated mainly released volatile terpene...

Phthorimaea operculella is one of the most important pests causing damage to stored potatoes. In this work, effect temperature (at 10, 20 and 30 °C) on predation pest eggs by Blattisocius tarsalis was studied in laboratory. addition, three predatory release rates two densities under microcosm conditions. The results showed that B. maintains its capacity at low temperatures (10 °C), obtaining an efficiency 49.66 ± 5.06% compared control. turn, °C, a maximum efficacy 78.17 4.77% achieved, very...