Nibbles: Hemp, Wheat, Wheat, Conservation, Liberia, Carnival, Climate change, Satoyama, Leafy greens

Nibbles: Agricultural landscapes, Seed banks, Maize genetics, Food diversity, Ancient food, Micronutrients status report, Seed systems, Punjab Agricultural University, Arable land, Dutch elm disease

Pest increases potato crop yields

Here’s a turn-up for the books. Potato plants in which a tuber is infested by the larva of the Gautemalan Potato Moth Tecia solanivora — “considered one of the most economically important potato pests in Latin America” — produce 2.5 times more marketable potatoes than uninfected plants. Something in the caterpillar’s saliva spreads through the plant and promotes tuber growth, giving a greater yield even when up to one in five of the tubers are infected.

Did indigenous Colombian potato farmers know of this? I couldn’t discover why the researchers had decided to investigate. In any case, the Guatemalan Potato Moth is clearly no pest. Researchers are now looking at “herbivore-derived chemical clues” and “induced compensatory plant responses to herbivory” as new ways to boost production.

Nibbles: Roses, Stripe Rust, Cuba, Carnival, India, GCARD, Urban ag, Genetic diversity and herbivory, Biocultural diversity