SHEFIK: ad 'Soybeans produce at least two times as much usable protein per acre than any other major vegetable or grain crop, except for hemp... They produce 5 to 10 times more protein per acre than land set aside for grazing animals to make milk, and up to 15 times more protein per acre than land set aside for meat production'

tohle muze bejt pravda, ale zaroven je to az prilis zjednoduseny tabulkovy uvazovani. protoze ty land-uses nejsou volne konvertibilni.



hezky to na vic mistech rozebira moje oblibena studie [fakt doporucuju, z hlediska zpusobu jak o tom celym premejslet]

2016 Carrying capacity of U.S. agricultural land: Ten diet scenarios
https://online.ucpress.edu/....elementa.000116/112904/Carrying-capacity-of-U-S-agricultural-land-Ten

While livestock production is the largest land user on Earth, simplistic thinking about dietary change must be avoided (Herrero and Thornton, 2013). Reviews of life cycle assessments of livestock systems and protein products show, definitively, that land use per unit of protein is generally lower with plant than animal sources (de Vries and de Boer, 2010; Nijdam et al., 2012). However, they also demonstrate a wide range among individual livestock products and among different systems producing the same livestock product. In addition to this variability in area of land required, the quality of land required differs as well. Modeling studies suggest that the largest fraction of land needs for ruminant animals are from forages and grazing lands (Wirsenius et al., 2010; Peters et al., 2014), which are often grown on non-arable land. Thus, reducing the most land-intensive products in the diet does not necessarily equate to freeing up land for cultivation.

btw treba soja je inspirativni v tom, ze pred 100 lety si nejaka mensi skupina farmaru rekla ze s tim neco udela a vyslechtila tuhle hyperplodinu.

z hlediska regenerace a agrolesnictvi maj podobnej potencial lisky :) ... za par dekad muzeme mit produktivitu jako soja z hektaru, ale v uplne jinejch ekosystemovejch meritkach, tj. trvala plantaz, rozmanita genetika [ne klony], agrolesnickej [resp. agrokerovej] system, odolny proti ohni, nezavisly na pocasi danyho roku.

Growing Hybrid Hazelnuts by Philip Rutter | Chelsea Green Publishing
https://www.chelseagreen.com/product/growing-hybrid-hazelnuts/

[par tejdnu jsme u nej byli pred nekolika lety]

LINKOS: ad 'Divočina se není sama schopna udržovat a proto tam potřebujem mít pastviny'

no je to o ty distribuci srazek, pokud je to extrem na jedny casti toho spektra, tj. destnej prales, pak ten se je schopnej udrzovat a travy a bylozravci tam hrajou malou roli. nemyslim, ze by nekdo soudnej argumentoval ekologicky/holisticky napr. za to, aby na sri lance udelali na stovkach tisic hektaru kesu plantaze, aby si mohli vegani delat "milk"shaky .] nebo aby tezari a pastevci kaceli amazonii. tj. aby se land use 'prales' zmenil na pastviny. ani ja to nedelam. tropickym agrolesnictvim se zabyva treba ernst gotsch.

pak mas k opacny strane spektra velky suchy oblasti s nepravidelnou distribuci srazek - ruzny nahorni plosiny, tibet, americkej stredozapad, stredni asie, ruzny oblasti afriky, australie, kde bez tech bylozravcu adekvatne managovanejch je ten system v limbu, resp. je daleko min produktivni nez by mohl byt. tam neni alternativa orna puda, ani prales. zaroven nefunguje to nechat bejt, napr. proto, ze tam ty stada nejsou, nebo ze jsou na ne nejaky tlaky, ktery jim znemoznujou fungovat volne a ve velkym.

a pak mas oblasti, ktery nejsou a nemuzou bejt destnym pralesem, treba stredni evropa, ale ktery maj celkem nenasilnou volbu mezi ruznejma land-usama. tzn. tady muzes mit taky nejaky agrolesnictvi, s vetsim podilem tech travnich ploch, ktery managujou bylozravci, a zaroven je to zkombinovany s jednoletou produkci za soucasny existence i tech stromu i toho naplno fungujiciho travniho ekosystemu. to je treba cesta, kterou se ja vydavam.


no a pak do toho vstupuje zmena klimatu a treba to tezarstvi a kaceni pralesu. muze se stat, ze ta amazonie se casem stane savanou, pak ji bude potreba managovat odpovidajicicm zpusobem, tj. skrz ty bylozravce, ktery uz tam stejne budou. jako je mi to lito a destrukce toho sinku se nam hrube nevyplati, ale neni vylouceny, ze se z toho zase v nejaky dlouhy epose ten sink nestane, akorat tentokrat biomasa nebude v hmote pralesa nad zemi, ale v hnmote pudy savan pod zemi. fight stromy/traviny bude drsnej .]

tady je ten split hezky rozepsanej. beef dela docela malo, resp. zanedbatelne malo

Soybean Myths — Truth or Drought
https://www.truthordrought.com/soybean-myths

now it's official
Red seaweed (Asparagopsis taxiformis) supplementation reduces enteric methane by over 80 percent in beef steers
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0247820

Red seaweed (Asparagopsis taxiformis) supplementation reduces enteric methane by over 80 percent in beef steers

wwf:
almost 80% of the world’s soybean crop is fed to livestock, especially for beef, chicken, egg and dairy production

ussoy:
Poultry and livestock feed make up 97 percent of soybean meal used in the U.S.

united soybean board:
According to a study funded by the soy checkoff, the soybean meal fed in the U.S. goes to several segments of animal agriculture.
Poultry eats about 64 percent.1
Pigs consume nearly 24 percent.1
Beef and dairy cattle use just over 10 percent.1