Cumulative Tree Trunk Diameter?

I need to get some systemic insecticide out to combat gall wasps.

This stuff gives the application per cumulative trunk diameter. Google confused me on that subject.

If i have one pin oak standing alone in the yard,how do I determine the cumulative trunk diameter? i have a grip on diameter and circumference, but they threw the word cumulative in on me now. Confused

Edited by Dave H - 29 Apr 2019 at 8:07pm

Volume Calculations

To calculate trunk volume, the tree is subdivided into a series of segments with the successive diameters being the bottom and top of each segment and segment length being equal to the difference in height between the lower and upper diameters, or if the trunk is not vertical, the segment length can be calculated using the limb length formula above. Whether using the aerial or ground based methods, the diameter or girth measurements do not need to be evenly spaced along the trunk of the tree, but a sufficient number of measurements need to be taken to adequately represent the changes in diameter of the trunk. Cumulative trunk volume is calculated by adding the volume of the measured segments of the tree together. Where segments are short, the volume of each segment is calculated as the volume of a frustum of a cone where volume is calculated by any of the three forms:

Volume= h(π/3)(r₁² + r₂² +r₁r₂)

Volume= h(π/12)(D₁² + D₂² +D₁D₂)

Volume= h/3(A₁ + A₂ +(A₁A₂)^1/2)

A similar, but more complex formula can be used where the trunk is significantly more elliptical in shape where the lengths of the major and minor axis of the ellipse are measured at the top and bottom of each segment.^[1]^[2]

https://en.wikipedia.org/wiki/Tree_volume_measurement

B:-) Dnoym

that is kinda what i was thinking Steve.

Think I will give the company a call tomorrow for grins.

I hate to admit it but I have a BS degree in Forestry, however the year on my ring says 1965. LOL

I think cumulative tree trunk diameter is same as diameter breast height(DBH). Every coupla years the pointy headed egg heads have to change terms, to make themselves appear smarter, and baffle the non-members of their club... Wink

Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!

I think Diy has the answer. For me google cannot get the answer.

I am throwing in the towel and going with DBH. Must be a cone head thing. Confused

I went through the packet of information attached to the container jand can't even get a tele number for information, that is unless you poison yourself with it. Tongue

This stuff gives the application per cumulative trunk diameter.

In the case where a tree has only one trunk then diameter can be measured at breast height (DBH) or root crown (DRC). From what i've read, the "cumulative" term applies when a tree has multiple trunks. Special rules apply in this case.

Lots of explanation here, starting in section 5.9

https://www.nrs.fs.fed.us/fia/data-collection/field-guides/ver6.0/5.0%20TREE_and_SAPLING6.pdf

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