Evaluation of Physiological and Quality Parameters of Green Asparagus Spears Subjected to Three Treatments against the Decline Syndrome
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AuthorLópez Moreno, Francisco Javier; Atero Calvo, Santiago; Navarro León, Eloy; Blasco León, Begoña; Ruiz Sáez, Juan Manuel; Soriano Vallejo, Maria Teresa
AllelopathyGreen asparagusChicken manure pelletsBrassica manure pelletsDazometDecline syndrome
López-Moreno, F.J.; Atero-Calvo, S.; Navarro-León, E.; Blasco, B.; Soriano, T.; Ruiz, J.M. Evaluation of Physiological and Quality Parameters of Green Asparagus Spears Subjected to Three Treatments against the Decline Syndrome. Agronomy 2021, 11, 937. https://doi.org/10.3390/ agronomy11050937
SponsorshipINIA and ERDF 2014-2020; Project RTA2015-00008-C02,; State Training Subprogram of the State Program for the Promotion of Talent and its Employability, at the IFAPA. Grant number [BES-2017-080123].; ESF
Green asparagus (Asparagus officinalis L.) is a widely grown and consumed crop which provides high-level nutritional interest. In recent years, the decline syndrome in asparagus plantations has been rapidly augmenting. This syndrome causes the early death of whole plants, also negatively affecting the new replanting. Decline causes notable economic losses in the sector. The objective of this work was to verify the effect of different treatments against asparagus decline syndrome on the physiological parameters and nutritional quality of the spears. To meet the objective, four different treatments were applied to asparagus plots strongly affected by decline syndrome: (T1) untreated control soil, (T2) biofumigation with Brassica pellets, (T3) biofumigation with chicken manure pellets, and (T4) disinfestation of the soil with Dazomet. The cumulative yield and physiological and quality parameters of green asparagus spears were studied. Thus, malondialdehyde (MDA), photosynthetic pigments, glutathione (GSH), ascorbate (AsA), total phenols, flavonoids, anthocyanin, antioxidant test, mineral nutrients, and the amino acid profile were measured on asparagus spears. The results showed that the Brassica pellets and Dazomet treatments were the most effective against the damage caused by the decline syndrome. However, it would be necessary to monitor the evolution in the following years.