of the ear and kernel which have a marked influence upon the yield. This is so universal that we have score cards which set forth the ideal type of ear and give certain values to the different characters. In general, the score cards are alike and all agree...

After summarizing previous experiments pertaining to soil texture, water supply, and nutrient supply on various plants, specifically grains, he details his own experiments on these effects on the root development of maize. The best growth of plant...