March April 2017 – Writing about root zones for greenhouse crops has been an important subject for me and I have written a number of articles on this subject in Greenhouse Canada.
A grower recently sent me a pair of photos (1 and 2) of tomato plants.
Root zone management. Hmmm. Quick “Google” to see what’s out there. Oh. Apparently, the “Internet Assigned Numbers Authority (IANA) is responsible for management of the DNS [Domain Name System] root zone. This role means assigning the operators of top-level domains, such as ‘.uk’ and ‘.com,’ and maintaining their technical and administrative details.”1 So, root zone management is a bigger topic than first thought!
Do plants have a language that we can learn to understand?
March 10, 2016 — Coleus downy mildew can cause leaf spots, necrotic lesions, leaf twisting, leaf drop, and/or stunt. Management options include using less susceptible cultivars, good air movement, low humidity, and fungicides.
Feb. 25, 2016 — Scouting plug trays before use is critical to preventing financial losses down the production line.
Feb. 5, 2016, Frankfurt, Germany – In contrast to animals, plants form new organs throughout their entire life, i.e., roots, branches, flowers and fruits.
Nov. 23, 2015, Raleigh, NC – Christmas cacti are sensitive to low substrate pH conditions, which can lead to phylloclade chlorotic blotches and necrosis.
December 2015 — I have decided to write about the powdery mildews (PM) this month because I found very serious infections earlier this year both on tomatoes and cucumbers. As the name suggests, most growers recognize the symptoms easily by observing white, powdery stuff on the upper surface of leaves. The pictures accompanying this article adequately describe the symptoms.
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