Does light determine the date of heading out in winter wheat and winter rye?

[1] BURR WW, 1923, 120 U NEB AGR COLL E

[2] DAVIDSON JD, 1922, J MIN AGR, V29, P465

[3] JARDINE WM, 1916, J AM SOC AGRON, V8, P163

[4] JOHNSTON ES, 1921, U MD AGR EXP STA B, V245

[5] SCHAFER EG, 1921, WASH AGR EXP STA B, V159

[6] THATCHER LE, 1922, MONTHLY B OHIO AGR E, V7, P139

[7] Photoperiodism of wheat - A determining factor in acclimatization [J]. SCIENCE, 1922, 56 : 313 - 315

[1] BURR WW, 1923, 120 U NEB AGR COLL E

[2] DAVIDSON JD, 1922, J MIN AGR, V29, P465

[3] JARDINE WM, 1916, J AM SOC AGRON, V8, P163

[4] JOHNSTON ES, 1921, U MD AGR EXP STA B, V245

[5] SCHAFER EG, 1921, WASH AGR EXP STA B, V159

[6] THATCHER LE, 1922, MONTHLY B OHIO AGR E, V7, P139

[7] Photoperiodism of wheat - A determining factor in acclimatization [J]. SCIENCE, 1922, 56 : 313 - 315