Emh...guarda che sono stato il primo su sto forum ad usare la bottiglia di rame come fertilizzante
Ed ad aggiungere l'acido citrico come stabilizzante,ti dirò...
Gli altri si sono sempre fatti bastare quella del mangime
E anche ad aggiungere il citrico...secondo zio Luca sarebbe stato meglio l'ascorbico o l'HCL
Fatto sta che nei micro che abbiamo fatto di rame ne metto molto più di te fidati....e quando cominciai a sperimentarlo lo feci apposta con le caridina
Che 0.03 ppm di rame sono tossici te lo do per certo
Traduzione solo della prima parte fatta con googlepubmed ha scritto:Effects of Copper on Gammarus pseudolimnaeus, Physa integra, and Campeloma decisum in Soft Water
Three invertebrate species were subjected to acute (96-hr), followed by long-term (6-week) copper exposures under continuous-flow bioassay conditions. Survival, growth, reproduction, and feeding were the responses used for measuring toxicant effects. The average 96-hr median tolerance limits (TLm) values for Campeloma decisum, Physa integra, and Gammarus pseudolimnaeus were 1.7, 0.039, and 0.020 mg/liter total copper, respectively. The total copper concentration having no effect after 6 weeks exposure for all three species was between 8.0 and 14.8 μg/liter. The newly hatched amphipods obtained from the second 6-week study were exposed to copper for 9 additional weeks, and grew to the adult stage only in copper concentrations ≤ 4.6 μg/liter. After 5 weeks exposure to a water system, survival of newly hatched Gammarus was markedly reduced when copper concentrations were between 12.9 and 6.2 μg/liter
Effects of copper on the egg development and hatching of a freshwater pulmonate snail Lymnaea luteola L.
A freshwater invertebrate egg development and hatching toxicity test with an Indian freshwater pulmonate snail, Lymnaea luteola, comprising the following developmental endpoints was described: mortality, development, formation of eyes and foot structure, heart rate, duration of different larval stages, and hatching time. Developmental stages were morula, and at third, fifth, and eighth days; the trochophore, veliger, and hippo larvae, respectively. At the age of about 9th to 11th days after egg laying; more than 95% young snail hatched in control laboratory conditions. To evaluate effects on embryonic development, the pulmonate snail eggs of 24-h old were exposed to a series of nominal copper concentrations. The percentage survival of embryos treated in 10–32 μg l−1 of Cu after 240 h of exposure drops sharply at veliger and hippo stages. All embryos died at 100–320 μg l−1 of Cu within 168 h of exposure at trochophore and early veliger stages. The detected abnormalities were malformation of foot, eyes, thinness and incomplete formation of shell, growth retardation, and slow rotation of embryo within the egg capsule as compared to control embryos. Lethal and sublethal effects in terms of mortality and significant delay in hatching could be found in the 3.2, 5.6 and 10 μg l−1 of Cu concentrations. This species is widely distributed in the Indian subcontinent freshwater reservoirs and more sensitive to Cu than other tested aquatic test organisms; therefore, could be used as a test model of Cu and possibly other pollutants for rapid risk assessment of environmental pollutants. The snail egg embryo bioassay is simple, rapid, highly sensitive, cost-effective, and easy to test under standardized laboratory conditions.
Benedetti chelanti in vasca ^:)^a a ingleseEffetti del rame su Gammarus pseudolimnaeus, Physa integra e Campeloma decisum in acqua dolce
Tre specie di invertebrati sono state sottoposte ad esposizione acuta (96 ore), seguita da esposizioni di rame a lungo termine (6 settimane) in condizioni di saggio biologico a flusso continuo. Sopravvivenza, crescita, riproduzione e alimentazione sono state le risposte utilizzate per misurare gli effetti tossici. I valori medi di tolleranza mediana di 96 ore (TLm) per Campeloma decisum, Physa integra e Gammarus pseudolimnaeus erano rispettivamente 1,7, 0,039 e 0,020 mg / litro di rame totale. La concentrazione totale di rame senza effetto dopo 6 settimane di esposizione per tutte e tre le specie era compresa tra 8,0 e 14,8 μg / litro. Gli anfipodi appena schiusi ottenuti dal secondo studio di 6 settimane sono stati esposti al rame per 9 settimane aggiuntive e sono cresciuti allo stadio adulto solo in concentrazioni di rame ≤ 4,6 μg / litro. Dopo 5 settimane di esposizione ad un sistema idrico, la sopravvivenza del Gammarus appena schiuso è stata nettamente ridotta quando le concentrazioni di rame erano comprese tra 12,9 e 6,2 μg / litro
