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Comment by symby | Hacker News Reader

Organic FV are low in pesticide residue. Conventional FV are high.

Lot of comments here mention pesticide use in organic FV as well, just not synthetic pesticides. Are there any distinctions within organic and conventional of fruits and vegetables that have low pesticide use regardless of organic or not?

I've seen fruit marked as "IPM" in my local grocery store. That refers to integrated pest management, a general philosophy of controlling pests through understanding of their physiology, behavior, and interaction with the artificially-managed ecosystem, sometimes using synthetic chemical pesticides but in the smallest quantities that achieve the desired effect.

http://ipm.ucanr.edu/

I don't believe use of the term is regulated, though. So in practice that may just be a nicer-sounding synonym for "conventional".

Unless the farmer is a moron, IPM is how most farmers try to use pesticides. Pesticides and chemical applications can be very expensive. Farmers try to use the least possible amount they can for purely economic reasons. My wife's grandfather was using IPM back in the 70s. Farming is competitive. If your costs are too high, you eventually go bankrupt during bad years. For the most part IPM is the rule, not the exception. Purely limited by the farmer's ability to understand pest cycles.

A matter of degree, maybe. Certainly there's a degree of understanding that's cheaper than just blind heavy spraying, and that any grower would thus be foolish not to obtain. I've often seen "IPM" used to refer to systems that went beyond that though, incurring higher cost for lower ecological impact. For example, the guidelines linked below note explicitly that

> Practices contained in this protocol are considerably more expensive than conventional programs that rely on highly toxic pesticides.

https://ipminstitute.org/wp-content/uploads/2022/04/Red-Toma...

I think my supermarket apples were just plain "IPM" though, not a specific set of guidelines like that. Those guidelines seem like a tough sell overall, hard to succinctly explain the benefits to the average consumer.

Conventional IPM programs use more toxic, but muuuch less volume of pesticides.

Organic programs user "better" pesticides, but much much more.

Which is better? We'll, it depends on how fast those pesticides break down and what those degraded molecules are. It depends on how much volume is applied to the produce. It depends on if it accumulates in the flesh of the produce.

What if a pesticide outrageously lethal to humans, but breaks down in 2 days and you only apply it in the first 25% of the produce growing window?

Which is worse? 400 lbs of feathers accumulating on your chest at 100 lbs/week for 4 weeks or 400 lbs of steel on your chest applied once.

Silly metaphor, but the answer to incredibly difficult system problems is really "it depends". Conventional vs organic is not clear cut.

> Conventional vs organic is not clear cut.

Certainly agreed. Note that the guidelines I linked above do permit certain synthetic pesticides, despite their somewhat confusing use of the word "conventional" in the text that I quoted. For example, cyflumetofen is synthetic, and it's in their lowest-risk category. Copper hydroxide products are permitted under OMRI organic guidelines, but forbidden or restricted here.

I generally like the idea of more restrictive voluntary guidelines based only on safety to the ecosystem and consumer, and not on naturalness like for "organic". I haven't seen much commercial uptake, though.

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