Oryza glaberrima increase yield was the adoption of nerica cultivars, crossbred to specifications from local farmers using African rice varieties provided by local farmers. These were bred during the 1990s and released in the early 21st century. Results so far have been mixed; the nerica varieties are less hardy and more labour-intensive, and effects on real-world yields vary. Subsidies of nerica seeds have also been criticized for encouraging the loss of native varieties and reducing the independence of farmers. Multiple varieties of African rice are often grown so that the harvest is staggered. In this way, the harvest can be eaten fresh.
Earias cupreoviridis of costa suffused with pinkish yellow. There is a brownish irregular marginal band with a yellowish inner edge. Abdomen and hindwings pure white. The caterpillar is pale pinkish brown with olive-green speckles. Anterior tubercles are orange colored and the later are pinkish brown. There are jet-black spots above the spiracles. Larval food plants are "Abelmoschus esculentus", "Diospyros", "Gossypium", "Grewia tiliaefolia", "Corchorus", "Hibiscus", "Kydia calycina", "Malvastrum coromandelianum", "Oryza sativa" and "Sida cordifolia". Earias cupreoviridis Earias cupreoviridis, called the cupreous bollworm as a larva, is a moth of the family Nolidae. The species was first described by Francis Walker in 1862. It