Viewing profile — lathyrus_long

Tissue culture is also used without genetic engineering. Orchid flasking is the classic example, since the seedlings require an external source of energy. A symbiotic fungus provid…

It's not fundamentally incompatible, but non-proprietary hybrids are extremely rare. The effort to maintain the two parents and do the cross is much greater than that of saving see…

You could say that a log scale is useful only when the variable can be usefully regarded as the exponential of something, and I think you'd be tautologically right. That exponentia…

Log scales are also widely used for physical quantities that humans can't directly perceive, like radio-frequency electric fields. The logarithmic nature of human perception provid…

That's a question of why Fourier transforms are important though, not just how they're defined and computed. The next-level answer is presumably that sinusoids (or complex exponent…

As others note, it's exactly a change in basis. In particular, it's an orthonormal basis, meaning that the dot product (correlation) between a basis function and itself is one, and…

This article doesn't say, but vertical farms almost always grow hydroponically, using sterilized inert media (like coir) or inherently sterile inert media (like rockwool). The wate…

It's more complicated than that, since the wavelength distribution matters--we can effectively transform green photons that the plant would have reflected into red or blue photons …

The objections are to vertical farms for grain, not vertical farms in general. Leafy greens are ideal candidates for indoor growing by artificial light, since they need relatively …

Tomatoes, peppers, lettuce, culinary herbs, and many other plant species are grown profitably under hydroponic conditions. This is especially common in colder climates, to maximize…

I'm not sure that's how I perceive capsaicin myself; but the guy who bred the Carolina Reaper is a recovering addict (in the usual sense, street drugs and alcohol), and he certainl…

I think that's seed potato production, where the consistency and lack of pathogens justifies the extra cost. Here's a manual: https://cipotato.org/wp-content/uploads/2014/08/005447…

What do you mean by "sludge"? Typical hydroponic solution just looks like water, thus the name. The fertilizers used are higher purity ("greenhouse grade", "ultra-soluble", etc.) t…

> High calorie and/or high fiber foods require complex rhizospheres which is currently only found in healthy soil. What is your source for this claim? Major grains (wheat, corn, ri…

Surely this relationship is noteworthy only to the extent it's potentially a causality? The authors are careful not to make explicit claims, but most discussion here is about that …

> 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 o…

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 …

Many American cities have "community gardens" equivalent to the European allotments. Mine will provide a few hundred square feet to any resident for a nominal fee, for the exclusiv…

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 physi…

I've heard of facilities with short crop cycles (greens, herbs, etc.) running totally bug-free with zero pesticides, with air showers at the entrance and careful segregation so tha…

The p values are small enough that the correlation seems likely to be real, even after lots of dredging through that dataset. I'm less sure about the causality, though. It's also p…

Other kinds of fruit have higher sugar content; jujube is reportedly highest, reaching thirties or even forties. For a strawberry 13-14 is quite good, though. Here's a sophisticate…

They applied "nutrient solution of 0.125× strength MS nutrient solution, pH 5.7 (Murashige and Skoog)". The salts in that make a typical complete hydroponic fertilizer. https://en.…

Huh, quoting: > While they're easily cultivated from seed and grown in nurseries both in the United States and in Asia, the large, old, wild-harvested Dudleya are considered luxury…

Maybe, but I've never heard of anyone buying a wild-collected orchid from a species where commercially tissue-cultured specimens were available. Beyond the ethical question, greenh…