شنبه ۰۹ بهمن ۰۰ | ۱۰:۲۲ ۳۱ بازديد
The results of the analysis of about 1400 wells pistachio shell in the city of Rafsanjan
Shows that in most cases the ratio of calcium to magnesium is less than one.
However, the best ratio of calcium to magnesium is four to one.
Magnesium cation has a negative (antagonistic) interaction with calcium and potassium cations
. That is, if the amount of one of these elements in the soil solution increases, the absorption of two
The other element is reduced. In most pistachio orchards the ratio of calcium to magnesium in
The soil solution is so low that too much magnesium limits calcium absorption
Is. The occurrence of the complication of pistachio bone skin spot is probably related to this
Is the problem. The amount of calcium needed to form the bony shell of the fruit
Pistachios are much more than necessary for the growth of leaves and other organs of the plant,
Despite the fact that the parent substance of most of our soils is calcareous and the absolute amount of calcium in
Soil solution is sufficient and even higher than required, a lot of magnesium, places
Occupies calcium uptake on the root surface and prevents calcium uptake by
Is rooted.
Too much magnesium also directly affects the growth and development of the tree
Gives. To show the magnitude of the magnesium hazard in irrigation water from an indicator called
Magnesium hazard indicator is used. This index is obtained from the following relation:
Mg haz = Ca / Ca + Mg
In this regard . Mg haz magnesium risk index, Mg and Ca magnesium amount respectively
Calcium is in milliequivalents per liter of soil solution. If this
If the index is more than 50, the use of this water gradually some characteristics
Soil physics such as ventilation and permeability under operation familiarity and
Was adversely affected by pistachio extract.
The use of gypsum as an available source of calcium increases and corrects the ratio
Calcium is converted to magnesium. The problem is that the ratio of calcium to magnesium is disturbed in many
It can be seen from pistachio orchards.
Properties of dried fruit for stomach and intestines