Premium
Collapse of Alfalfa Petioles Their Calcium Content 1
Author(s) -
Nightingale H. I.,
Smith R. L.
Publication year - 1968
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1968.00021962006000050010x
Subject(s) - petiole (insect anatomy) , medicago sativa , calcium , shoot , agronomy , dry weight , nutrient , biology , horticulture , chemistry , botany , ecology , hymenoptera , organic chemistry
Alfalfa ( Medicago sativa L.) plants were grown in a series of reduced calcium nutrient solutions which ranged from 1.9 to 80.0 mg Ca per liter after the plants were established using a complete nutrient solution. A sudden collapse of alfalfa petioles occurred most frequently when the calcium content of the shoots was between 11 and 16 meq per 100 g. Petiole collapse rarely occurred when the calcium content of the shoots was less than 11 meq or greater than 30 meq per 100 g dry weight. Chemical analysis of normal petiole sections showed an increase in calcium content as the leaf was approached. However, in abnormal (collapsed) petioles the reverse was found.