Plant controlling biological behavior

Controlling Biological Behavior of Plants with Synthetic Plant Growth Regulating Chemicals... 

It is conceivable that changes in the (induced) volatile production in commercial crops could lead to the development of biological control packages in which biological control agents trained specifically for the modified crop are included. It will be exciting to see whether these approaches can lead to plants with altered (improved) predator behavior and to crops with improved biological control. 

Translocation in plant. The last step in elemental availability is translocation from roots to tops, a biological process that would seem outside the control of soil chemistry. A number of trace elements, especially those that take the form of cations in soils, do not readily translocate to plant tops. Therefore it is common for metals such as Cu, Pb, and Cd, after absorption from the soil, to accumulate in (or on) roots. Translocation behavior of plants is complex and not understood for many of the elements of environmental concern, but soil chemical factors (alkalinity, phosphate... 

Diquat and paraquat applied to aquatic systems were eflFective in controlling pond flora and did not directly aflFect pond fauna (45, 67). The absence of herbicidal activity to aquatic fauna was attributed to inactivation by adsorption on bottom muds and the subsequent lack of biological availability (45). The phytotoxic eflFects to pond flora probably occurred through absorption into the plant tissues of herbicides adsorbed on leaf surfaces. Other details concerning the behavior of diquat and... 

Hedin, P. A., F. G. Maxwell, and J. N. Jenkins, Insect plant attractants, feeding stimulants, repellents, deterrents, and other related factors affecting insect behavior, in Proceedings Summer Institute for Biological Control Plant Insects and Diseases (F. G. Maxwell and F. A. Harris, eds.), 494-527, University of Mississippi Press, Jackson, 1974. 

---