Dumbass, still talking about farms using nutes over years, not 4 months with a weed plant.
what about this?
"Eva Nylund. 2003. Cadmium uptake in willow (Salix viminalis L.) and spring wheat
(Triticum aestivum L.) in relation to plant growth and Cd concentration in soil solution.
Swedish University of Agriculture Sciences. Department of Soil Sciences.
The cadmium (Cd) concentration in agricultural soils has increased during the last decades.
This toxic heavy metal is allocated to edible plant parts and moves upwards in the food
chain, e.g. via cereals and vegetables. Plant uptake has been investigated in many species.
For wheat, most studies have focused on the concentration in the grain, not, as in this study,
on total uptake.
The aim of this project was to determine the uptake of cadmium (Cd) in clone 78183 of
willow (Salix viminalis L.) and two spring wheat (Triticum aestivum L.) cultivars, cv
Dragon and cv Vinjett, as a function of both crop growth parameters, and Cd concentration
in the growth medium. The correlation between Cd concentration in the soil and in the soil
solution was also investigated. The concentrations in the growth medium were within the
range of naturally occurring concentrations of Swedish agricultural land.
The experiment was carried out as a
pot experiment under controlled conditions in a
growth chamber. A blend of vermiculite, perlite, fine sand and fine gravel was used as
growth medium, which was applied with cadmium sulphate to the concentrations of 0.00,
0.10, 0.25 and 0.40 µg Cd g-1 dry soil respectively. Nutrients were supplied at an addition
rate of 0.15 day-1 (i.e. the amount increased with 15% per day) to maintain the crop growth
rate at steady state. Plant biomass above and below ground was measured by three harvests.
The time of the experiment was six weeks. The concentration of Cd in the plants, soil and
soil solution was analysed.
Cd uptake in plants was correlated to the Cd concentration in soil and in soil solution.
Both species increased their uptake with increasing soil concentrations, but there was no
significant difference in total uptake between the crops. Plant biomass production also
affected the Cd uptake. When plants were grown in soil with the same concentration of Cd,
the amount of Cd in the plant increased as the biomass increased. However, there was a
difference between species. S. viminalis showed to be more efficient in taking up Cd per
unit of biomass compared to the spring wheat cultivars. In S. viminalis, the amount of Cd in
the leaves was higher than that in the roots and stem."
hahahahaha. who doesnt think heavy metals are uptaken by plants? chucky does
now lets compare the cadmium levels in the study to levels found in advanced nutirents micro:
ADVANCED NUTRIENTS
MICRO 4-0-0 Date Sampled: 8 /9 /2012
Arsenic
0.2 µg
Cadmium
1.18 µg
Cobalt
0.4 µg
Lead
3 µg
Molybdenum
11.1 µg
Nickel
2.19 µg
Selenium
0.04 µg
Zinc
62.9 µg
Sample ID No: FT-07-0063-12
Mercury
0.073 µg
didnt you say you were done with me donkey? all youv accomplished is making your self look dumber than bag of hammers