Ethylene is the fruit ripening hormone which helps turn starch into sugar.
But it also helps ripen methoxypyrazines like in Sauvignon Blanc & many other species other than Vitis vinifera.
2-isopropyl-3-methoxypyrazine
2‐Alkyl‐3‐methoxypyrazines
2-sec-Butyl-3-methoxypyrazine...
Seeds from Peaceful Heritage of Kentucky is what is recommended by Director Kirk Pomper of KSU Asimina triloba land grant programs.
The seeds are of superior quality & are hybrids of superior select cultivars.
It also the cheapest place to bulk purchase quality Asimina triloba seeds.
Best time...
Happen when root hairs damaged by Ferric Oxide, aka red Iron rust. When Iron unchelates Ferric Oxide chemically reacts with proteins in the cell walls roots all at once. Balancing soil pH with Citric acid can restore healing & functionality.