Orchard Weeds

I would like to share an excerpt from a publication to highlight the value of observation.

"Mr JLE Lauderdale made an interesting observation at Baton Rouge on March 19 1917 while examining roots of Coronopus didymus in a field of stock beets - Beta vulgaris. The beets were growing on ridges where the soil was less moist and less compact than that midway between the rows. Of 25 plants of C. didymus growing on the ridges, 24 were infested with Pemphigus populitransversus (type of aphid), whereas only 6 of 25 plants growing in the low ground between the rows had aphids present on their roots. This would indicate that either the compactness of the soil...".

Journal of Agricultural Research, Volume 14 LInk