Organic or conventional production system and nutrient rate affect the nematode community in carrot production

© 2021 Authors.

Bibliographische Detailangaben
Veröffentlicht in:Journal of nematology. - 1969. - 53(2021) vom: 14.
1. Verfasser: Grabau, Zane J (VerfasserIn)
Weitere Verfasser: Treadwell, Danielle D, Perez Orozco, Jose J, Campbell, David N, Hochmuth, Robert C
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Carrot Daucus carota Management Nematode community Nutrient rate Nutrient source Organic
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520 |a Organic and conventional production are common in horticulture crops and each system may exert a different influence on the soil ecosystem, particularly the nematode community. Crop nutrient rate is an important choice in both production systems. The objectives of this study were to assess the impacts of (i) organic and conventional production systems and (ii) nutrient rate in both systems on the nematode community in carrot production. To investigate these objectives, field studies in organic and conventional production - which included fumigation with 1,3-dichloropropene - were conducted in North-Central Florida. In both production systems, nutrient rate treatments were 168, 224, 280, 336, and 392 kg N/ha. Poultry litter was the nitrogen source in organic production whereas synthetic, inorganic fertilizer was used in conventional production. All nematode trophic groups were consistently more abundant in organic than conventional production. The nematode community was more diverse and had greater trophic structure in organic production. Greater rates of organic nutrients increased enrichment opportunists (bacterivores and fungivores), but inconsistently across years. Conventional production had similar results except that only moderate nutrient rates increased fungivore abundances. Extreme enrichment opportunists (Rhabditis spp.) drove bacterivore trends in organic production whereas moderate enrichment opportunists (Cephalobus spp.) drove trends in conventional production. Nutrient rates did not affect omnivore-predators, herbivores, nematode community diversity, or structure in either system. In summary, type of production system, organic or conventional, exerts a strong influence on the nematode community, but nutrient rate has less consistent effects in horticulture production 
650 4 |a Journal Article 
650 4 |a Carrot 
650 4 |a Daucus carota 
650 4 |a Management 
650 4 |a Nematode community 
650 4 |a Nutrient rate 
650 4 |a Nutrient source 
650 4 |a Organic 
700 1 |a Treadwell, Danielle D  |e verfasserin  |4 aut 
700 1 |a Perez Orozco, Jose J  |e verfasserin  |4 aut 
700 1 |a Campbell, David N  |e verfasserin  |4 aut 
700 1 |a Hochmuth, Robert C  |e verfasserin  |4 aut 
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