SEED MASS AND LIGHT-DEMAND - THE NEED TO CONTROL FOR SOIL-TYPE AND PLANT STATURE

Studies on whether or not species which need more light for establishm ent have smaller seeds should be made between plants of similar mature height living in the same soil and macroclimate. Salisbury's classic comparisons confused differences in light-requirement during establish ment with differences in mature height and in the supply of soil resou rces.