TY  - PRO
AU  - Lolishvili,R.T.
AU  - Bedoshvili,D.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT)
ED  - 
TI  - Biological absorption of chemical elements by cereal crops under the conditions of Shiraki
U1  - 633.1147 
PY  - 2004///
CY  - Tbilisi (Georgia)
PB  - CIMMYT
KW  - Barley
KW  - Biological analysis
KW  - Cereal crops
KW  - Chemical control
KW  - Maize
KW  - AGROVOC
KW  - Nitrogen
KW  - Nutritive value
KW  - Phosphorus
KW  - Protein content
KW  - Wheat
KW  - CIMMYT
N1  - Abstract only
N2  - Plants are characterized by selective bio- logical consumption of chemical elements. The more intensive is the process, the higher is productivity of agricultural plants. Intensiveness of biological con- sumption of the chemical elements was studied under the condition ordinary chemozems of Shiraki. The crops targeted by research included winter wheat, winter barley and maize. The analysis of the obtained data suggests that wheat and barley are the most intensive consumers and accumulators of nitrogen (K6= 5.0110-5.3160) and phosphorus (K6 =3.0630- 2.7500). They also consume in relatively large quantities potassium (K6=0.5790-0.5330), calciurn K6=0.2500-0.2460, sodium and manganese (K6<1 ). Magnesium 6=0.0880 and silicon K6=0.0330-0.0035 are less consumed. Iron and aluminum are absorbed at a very low rate, K6=0.0050-0.0060 and K6= 0.0020, respectively. Differences in absorption of the chemical elements among the winter cereals are not observed and based on the absorption rates for the cereal crops, the chemical elements can be put in the following descending order: N>P>K>Ca>Na> Mn>Mg>Si>Fe> Al. However, the difference is ob- served in depostion of the elements in grain. Maize is characterized by higher level of nutritive element absorption. The descending order for chemical elements based on absorption rates in maize is partly different from that of the other cereals included in the study: N>P>Ca>K>Na>Mg>Mn> Si>Fe>AI. Nitrogen and phosphorus are accumulated in grain (K6=8.2750 and 3.4125). Potassium at the highest rate is consumed by stems and roots (K6=0.6714 and 0.5455, respectively). Magnesium, sodium and iron is highly consumed by roots (K6=0.1167 ,0.200 and 0.0049, respectively), while silicon is absorbed mostly by stems (K6= 0.0403), and aluminum by leaves and corn ears (K6=0.00404 and 0.0 110, respectively). Apparently, plants firstly absorb deficient nutrients, which lack in the soil and are necessary for protein synthesis. Intensiveness of chemical element consumption depends not only on subst- ratum content, but mainly on biological characteristics of a plant
ER  -