Optimum date of sowing depends on type of variey, weather, soil, irrigation facility etc. However, most appropriate time of sowing is when the daily ambient temperature drops to 20-22 0C.
Soaking seeds in water overnight before sowing, using higher seed rate, closer spacing, shallow sowing (2-3 cm) and spreading thin covering of FYM soon after sowing, can reduce loss caused by late sowing.
Higher carbon dioxide concentrations and warmer temperatures predicted for the end of this century will about double the amount of methane emitted per kilo of rice produced.
As more carbon dioxide enters the atmosphere, rice plants grow faster, the experimental data showed. This growth, in turn, pumps up the metabolism of methane-producing microscopic organisms that live in the soil beneath rice paddies.
IRRI has developed a flood-tolerant rice that is now widely grown across Asia where it is ensuring farmers can harvest a good crop even if they e
Hymenoptera include the honey bees, bumble bees, stingless bees, and carpenter bees. Members of these four bee groups are all social except the carpenter bees, which often make nests close together in wooden structures. The majority of bees are, however, solitary and each fertile female constructs her own nest.