Use of Homeophatic preparations for red spider mite, Tetranychus urticae (Acari: Tetranychidae) control in strawberry plants.
Ramírez-Rodríguez, L.A., Chavarria-Vega, F.D.M., Mena-Violante, H.G., Oyoque-Salcedo, G. & Angoa- Pérez, M.V. (2022)
...the objective of this work was the evaluation of the effect of commercial homeopathic preparations of Árnica [Arnica montana L. (Asterales: Asteraceae)] (Árni), Belladonna [Atropa belladonna) (Solanales: Solanaceae) (Bellad), Ferrum sulphuricum (it is a mineral) (FS), Bovista (Bovista sp.) (Agaricales: Agaricaceae) (Bov) and a homeopathic based on leaves infested with T.urticae (Agroh) at 6 and 30 CH, on the incidence and severity control of the damage caused by T. urticae in strawberry plants.
The work was performed in the greenhouses of the Universidad de Costa Rica located in San Pedro, Montes de Oca (latitude 9° 56′ 09′′ N and longitude 84° 03′ 07′′ W, 1200 m a.s.l.). The breeding of mites was performed on Camino Real strawberry variety 22 days after transplanting (DAT) in pots with inceptisol soil.
Regarding the incidence of T. urticae mites in strawberry plants, after 30 days, the treatments: 30 CH Agroh (15.238 %), 6 CH Árni (19.940 %) and 6 CH Bellad (19.805 %), promoted a lower incidence, 0.5 to 0.7 times less than that retrieved from the control treatment (Fig. 1a), highlighting the treatment with 6 CH FS that surpassed 1.14 times the incidence of the control. The incidence after 60 days in plants treated with 30 CH Agroh was 30.4 %, which was the lowest incidence observed in all of the treatments and 1.8 lower than that retrieved from the control. The plants with 6 CH FS treatment had the highiest percentage of incidence (63.3 %) of all the treatments, surpassing the control treatment (55.05%) 0.86 times (Fig. 1a).
Most of the homeopathics used herein accomplished T. urticae control in strawberry plants, except for FS, whose 6 CH treatment, after 30 days, allowed a damage degree even greater than the control, whose severity was surpassed. However, this same treatment at 30 CH allowed a reduction of the damage severity in the plants after 30 days.