ASEANCOF (JJAS 2025) - Temperature - Chart Description

In JJA, many countries in ASEANCOF will be at planting (Indonesia,  Myanmar, Thailand, Vietnam), mid-term (Philippines, Thailand ) for the rice crop.

For rice crop at planting stage, above normal temperature will reduce seed germination and weaken the seedlings. 

For rice crop at mid-season stage, above normal temperature negatively affect rice plant growth.

For rice crop at harvest stage, above normal temperature will delay rice harvest time and reduce grain filling rate.

Please see the Methodology for documentation of crop calendar and hazard affecting crops in ASEANCOF members.

P: Planting
M: Mid-season
H: Harvest

Source: U.S. Department of Agriculture

In JJA, many countries in ASEANCOF will be at planting (Myanmar, Thailand), mid-season (Philippines) or harvest (Vietnam) season for the corn crop.

For corn crop at planting stage, above normal temperature can induce oxidative stress in corn seedlings and may cause abnormal crop growth.

For corn crop at mid-season stage, above normal temperature during corn flowering stage can affect pollination process and ultimately reduce the kernel number.

For corn crop at harvest stage, above normal temperature  can have negative affect by disrupting the plant’s phenology, reducing pollen viability, impacting the female component of the plant, altering biomass allocation, and reducing kernel number and weight.

Please see the Methodology for documentation of crop calendar and hazard affecting crops in ASEANCOF members.

P: Planting
M: Mid-season
H: Harvest

Source: U.S. Department of Agriculture