Deep Roots
MANILA: Why study roots? Because the invisible half of the plant is as important as the visible part. Because "physiologically vigorous root systems are as essential as vigorous shoots for successful plant growth," PJ Kramer says, "because root and shoot growth are so interdependent that one cannot succeed without the other" ( dspace.udel.edu ). Because, DB Kell says, deeper roots give "much greater steady-state trapping of carbon, and also of nutrients and water, leading to improved drought and flooding tolerance, greater biomass yields, and better soil structure and steady-state carbon sequestration" (2011, nipccreport.org ). More biomass formed, more nutrients and water trapped, more tolerance to drought and flooding, higher yields, and better soils. Today I chanced upon Neil Palmer's 1.5-year old report of a high anticipation for a successful genetic modification of IRRI's rice variety IR64 that will produce deep roots and establish itself wel