Nematicidal Amendments and Soil Remediation

Abstract

The intensification of agriculture has created concerns about soil degradation and toxicity of agricultural chemicals to non-target organisms. As a result, there is great urgency for discovering new ecofriendly tools for pest management and plant nutrition. Botanical matrices and their extracts and purified secondary metabolites have received much research interest, but time-consuming registration issues have slowed their adoption. In contrast, cultural practices such as use of plant matrices as soil amendments could be immediately used as plant protectants or organic fertilizers. Herein, we focus on some types of soil amendments of botanical origin and their utilization for nematicidal activity and enhancement of plant nutrition. The mode of action is discussed in terms of parasite control as well as plant growth stimulation.

Biodisinfestation With Agricultural By-Products Developed Long-Term Suppressive Soils Against Meloidogyne incognita in Lettuce Crop

“…Although no statistical difference was observed in PPI one year after biodisinfestation, PPN represented <5% of total population identified in the treated soils (Figure 6). In concordance with previous studies, biodisinfestation effects on PPN remained longer periods by favoring antagonist microorganisms on detrimental of PPN (Ntalli et al, 2020). Conversely, bacterivorous nematodes were favored by the new conditions via enhancing the food source.…”

“…These biodisinfestation practices have shown positive results against different soilborne pathogens (Ntalli et al, 2020;Rosskopf et al, 2020), plant-parasitic nematodes (PPN) among them, which are important pests of a wide range of crops (Avato et al, 2013;Fourie et al, 2016;Dutta et al, 2019;Talavera et al, 2019). PPNs are very diverse and can cause different damage to host plants.…”

Optimizing Safe Approaches to Manage Plant-Parasitic Nematodes

“…Soil amended with chicken manure and broccoli at ≥25 °C was superior to the same at 20 °C in reducing M. incognita galls on tomato roots [ 78 ]. Ntalli et al [ 79 ] reviewed various soil amendments and their specific nematicidal activities. They categorized amendments as Brassicaceae and Asteraceae species (for cover-crop, biofumigation, rotation, and incorporation), biochars, composts, and vermicomposts (applied as recycling wastes), and other self-made products, such as canola or orange peel meals, dried leaves of Canabis sativa , and marigold or pennycress seed powder.…”

Sustainable Use of Bioactive Compounds from Solanum Tuberosum and Brassicaceae Wastes and by-Products for Crop Protection—A Review

“…The obtained meal, or pellet, can be formulated by a patented procedure able to modulate ITCs release [ 155 , 156 ]. Brassica crops or seed meal amendments incorporated into soil may have the potential to control soil-borne plant pathogens, by changing soil pH, microbial populations, and enhancing enzymatic activities concurrently with the release of ITCs [ 157 ]. These processes may trigger a new microbial balance manifested as soil suppressiveness, that is “soil’s ability to delay pathogen infection and disease progress in a susceptible host, even in the presence of virulent pathogens”.…”