What are /r/viticulture's favorite Products & Services?

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Looks so different on grape! It’s obvious on my cucumbers and squashed. An actual powder. This looks like rust or fungus. Interesting.

This what i want ?

Bonide BND141 Sulfur Plant Fungicide Organically Controls Rust, Leaf Spot and Powdery Mildew, 1 lbs, Ready-to-Use https://www.amazon.com/dp/B000HA95W2/ref=cm_sw_r_cp_api_i_ZPCHEGKAE3DJET7TKFH6

Stephen Skelton is pretty much the expert for viticulture in the UK with his regular viticulture book a mainstay for WSET Diploma and MW students as well. Highly recommend checking his stuff out.

Weed whackers work well, but you'll want to have a vine shelter in place. Your vines are young and you can introduce trunk diseases by damaging the vine.

As mentioned by someone else, pre-emergents herbicides and contact herbicides are going to be the easiest solution. Vine shelters help protect your young vines with this as well. I'd also recommend a spray guard if you go this route. You can find one on amazon here: https://www.amazon.com/Solo-4900430-Sprayer-Drift-Nozzle/dp/B005C7H6VM