Root‐treatment
Effects on Growth and Uptake of Broad Beans (Vicia Fabae L.) by Root and Foliar Treatments of Plant With Lead and Cadmium
Tue, 2014-03-25 14:36 — Shukri Mohammed KhalafUptake of toxic metals by plants has been of great interest to environmental scientists because this might harm the growth of plant and cause health hazard to man and animal.
In this study, the effects of two elements (lead and cadmium) which cause high concern because of their cummulative nature have been studied on broad beans. Both elements have been found to affect the growth of broad beans and this effect increased with the increase of concentration of metal in solutions used for root‐treatment or for foliar‐treatment of plant. The effect of foliar‐treatment was very much higher than the effect of root‐treatment by lead or cadmium.
Cadmium was found more toxic to plant growth than lead. The effect of cadmium treatment was more on the growth of fruits while the effect of lead treatment was more on the roots of broad beans. The least affected part by lead or cadmium was the stem of plant.
Both the concentration and the whole content of metal in plants and its varoius parts (roots, stem, leaves and fruits) increased steadily with the increase of cadmium or lead concentration in solutions used for either root‐treatment or foliar‐treatment. Concentration of metal ions was higher in roots and leaves than in fruits and stems of treated plants.
The uptake of metal to plant was calculated to be a very small part of the total amount of metal added during treatment.
Some explanations have been suggested in this study to explain the results obtained.
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Effects of Several Factors on the Growth and On the Metal Uptake Distribution of Pepper Plants Treated With Cadmium
Tue, 2014-01-14 08:54 — Mohammed Al-Subu'Several factors affecting the growth and the metal uptake of pepper
plants treated with cadmium solutions have been studied. These include
concentration of cadmium, type of treatment, type of soil, plant
species, and some properties of solutions used for treatment such as
acidity, degree of salinity and temperature.
Cadmium
had an obvious effect on the growth of pepper plants. Foliar‐treated
plants were affected more than root‐treated plants. The least degree of
growth‐inhibition and of cadmium uptake was found in plants grown in
soils with high organic matter content. Various species of pepper plants
acted very differently towards cadmium treatment. Both
growth‐inhibition and cadmium uptake was increased in plants treated
with acidic, saline and hot solutions.
Effects of Several Factors on the Growth and On the Metal Uptake and Uptake Distribution of Okra Plant Treated With Cadmium
Sun, 2014-01-12 13:56 — Mohammed Al-Subu'Several factors affecting the growth and the uptake of cadmium by
okra plants were studied using both root ‐ treatment and foliar ‐
treatment. These factors were the concentration of cadmium , type of
treatment, soil composition, presence of foreign ions, salinity, acidity
and temperature.
Both growth of plant and cadmium
uptake by plant were affected highly by the concentration of cadmium,
type of treatment, soil composition, salinity and temperature. Acidity
of solutions has only a little and irregular effect. A synergistic
combined effect of lead, copper and zinc with cadmium was observed on
the growth of plant but not regular on the uptake of cadmium.
Effects of Root and Foliar Treatments of Carrot Plants with Lead and Cadmium on the Growth, Uptake and the Distribution of Uptake of Metals in Treated Plants
Sun, 2014-01-12 11:38 — Mohammed Al-Subu'Toxicity of cadmium and lead on the growth of carrot plants has been
studied. Cadmium has been found to be more toxic than lead especially on
the shoots of carrot plants.
Foliar treatment has been compared with root‐treatment for the two elements on carrots and on their roots and shoots.
Concentrations
and total contents of lead and cadmium in whole plant in roots and in
shoots have been determined for treated carrot plants and compared in
root‐treatment with foliar‐treatment. Explanations have been suggested
whenever possible to illucidate the results obtained.
Percentages
of the metals taken by plants from the whole amounts of metal added
during treatment have been calculated and related to type of metal used,
concentration of metal in solutions used for treatment and the way of
treatment.
Effects on Growth and Uptake of Broad Beans (Vicia Fabae L.) By Root and Foliar Treatments of Plant with Lead and Cadmium
Sun, 2014-01-12 10:55 — Mohammed Al-Subu'Uptake of toxic metals by plants has been of great interest to
environmental scientists because this might harm the growth of plant and
cause health hazard to man and animal.
In this study, the effects
of two elements (lead and cadmium) which cause high concern because of
their cummulative nature have been studied on broad beans. Both elements
have been found to affect the growth of broad beans and this effect
increased with the increase of concentration of metal in solutions used
for root‐treatment or for foliar‐treatment of plant. The effect of
foliar‐treatment was very much higher than the effect of root‐treatment
by lead or cadmium. Cadmium was found more toxic to plant growth
than lead. The effect of cadmium treatment was more on the growth of
fruits while the effect of lead treatment was more on the roots of broad
beans. The least affected part by lead or cadmium was the stem of
plant.
Both the concentration and the whole content of metal in
plants and its varoius parts (roots, stem, leaves and fruits) increased
steadily with the increase of cadmium or lead concentration in solutions
used for either root‐treatment or foliar‐treatment. Concentration of
metal ions was higher in roots and leaves than in fruits and stems of
treated plants.
The uptake of metal to plant was calculated to be a very small part of the total amount of metal added during treatment.
Some explanations have been suggested in this study to explain the results obtained.
Effects, on Growth and Uptake Distribution, of Root and Foliar Treatments of Marrow Plants with Cadmium and Lead Solutions
Sun, 2014-01-12 10:12 — Mohammed Al-Subu'In this study the effects of root and foliar treatments of marrow
plants with cadmium and lead solutions on the growth of the various
parts of plant (roots, stem, leaves and fruits) have been studied.
Growth inhibition of the various parts of treated plants has been
compared with each other and for the two types of treatment. The
toxicity of cadmium on the growth of plant has been compared with the
toxicity of lead on the various parts of plants treated by root or by
foliar‐treatment with metal ions.
Cadmium and lead uptake by
plants and the distribution of this uptake between the various parts of
treated plants have been determined and commented on.
Percentages of cadmium or lead taken by plant from the total amount of cadmium or
lead added during treatment have been calculated and found to be very
small. This percentage has been found to be higher in foliar‐treated
plants and from dilute solutions than in root‐treated plants and from
more concentrated cadmium or lead solutions.
Effect of Root‐Treatment of Cauliflower, Parsley and Spinach Plants with Copper and Zinc on the Plant‐Growth
Thu, 2014-01-09 14:34 — Mohammed Al-Subu'
