Suggestion: Chemical Defoliant

TL;DR Version for the impatient: mix together Plant Auxin (Extract a plantball), Grin Powder and Bronze Dust to get Agent Bronze. Can be manually applied (25 uses), sprayed (mix with water cell, lasts longer and behaves similar to spray foam), or put into a defoliant bomb (TNT with Agent Bronze in the corners, Gunpowder in the middle). All plants (crops, grass, long grass, flowers, trees, etc.) quickly wither, and plants have a much harder time spreading to affected areas.

Hello Sir/Madam/Pigman. Is the area around your industrial base cluttered with inconvenient trees, ugly flowers and useless crops? Do you often experience seizures related to contemplating the serene beauty of lush, grassy plains? Have you ever wanted to reenact the horrors of Operation Ranch Hand in your very own backyard?

SAY NO MORE.

We here at CreeperCo Inc. are pleased to present the solution for all your herbicidal fantasies, Agent Bronze. Simply set your Dejuicer-Device of Doom - D123 to the "Don't touch this button!" setting, let the Gibbl build up, and insert a regular old Plantball to receive some fancy-schmancy Plant Auxin. Mix the auxin thoroughly with our patented Grin Powder, and add a little bronze dust for a healthy orange glow!

How you apply Agent Bronze is up to YOU!

1. Manual Application: Agent Bronze is ready to use out of the box (or, rather, in your hand). Simply sprinkle it on any plant-based entity and watch it shrivel and die! Don't forget, Agent Bronze is quite powerful - you shouldn't expect anything to grow there for a long time. Maximum 25 uses per unit of powder.
2. Spray the Plants Away: Agent Bronze can be mixed with a household water cell and loaded up into any compatible sprayer pack (sold separately). This will leave a residual foam that eats away at anything touching it and dissipates in a matter of seconds. The resulting smell of lemon and sulfur is completely natural - it's the smell of SCIENCE. Oh yeah, did we mention it lasts longer than in dust form? Hayo!
3. Big-Bada-Boom!: No time to spray the lawn or play in the dirt? Just adjust our trusty TNT recipe to accommodate Agent Bronze and you'll have a low-yield explosion that results in maximum-yield plant death! It's a little more expensive, but that's to be expected when you're looking for INSTANT SATISFACTION.

Recipes:

Quote from GregoriusT

So its a Bronzeingot with a Detectivehat? Oh moment that was Agent P.!, or was that Perry Platipus?

Well, i like the style of your Suggestion, so keep up the good work.

What's that you say? Also, thanks!

Quote from CrafterOfMines57

I like that you took the time to create images for your suggested items, but what use would this have? Mass deforestation is all that I can think of and so what would stop the use of this in griefing?

The main practical application I had in mind was base-building. Sometimes I find really nice flat land for a new death-fortress covered in trees, long grass, etc. and just don't want to bother clearing it out. Could also help with Wasteland-style aesthetics (I remember the Rocket Science mod's thermonuke would, after a certain radius, just kill trees and grass - the end result was spectacular). Lastly, this might (at a future point) add a little depth to the Industrial Conflict update - as I see it, jungle warfare could get a lot more dangerous with defoliants.

Not to mention killing plants in style. Groovy

Griefing could become an issue, but it has very limited application. Since organic material is basically the most abundant thing in Minecraft, I don't see this as a really big issue. Perhaps there could be a config option for admins to set the rate of re-growth of plant life in affected areas?

Quote from GregoriusT

Of course he forgot, that the Gibbl goes down and not up. But since Gibbl is a Pressureunit, it can also measure Vacuum, and the Treetaps are using the Overpressure of the inserted Component/Rubbertree to suck it up. An internal Vacuum would help the Extractor very much at extracting.

And if the Wiki is wrong, then i dont know, how much Gibble a Compressor has.

Oh no, I've fudged up the fictional units D:

Mea culpa, mea culpa, mea maxima culpa