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Authors: mansour | Edit: lirui
In Algeria, July marks the end of the wheat and barley harvesting season. Sowing of the cereals that are grown during the winter months started in October. Depending on the crop and region, August served as the planting season for potatoes and certain vegetables.
The cumulative rainfall was 48 mm, which was lower than the 15YA by 48%. Rainfall was below the 15YA in all three dekades of October. The average temperature was 24.2°C. It was higher than the 15YA by 1.1°C, and the photosynthetically active radiation reached 1322 MJ/m2, which is 1% above average. Due to the significant rainfall deficit, the biomass production potential (BIOMSS) is estimated to have decreased by 8% at the national level compared to the 15-year average. This reduction is also partly reflected by the spatial distribution of maximum VCI (VCIx) across most of the country, which averaged 0.42.
Overall, below-average rainfall from mid-September to October caused a late start to the cereals season, while the CALF was 13%, significantly lower by 18%. The national Crop Production Index (CPI) was 0.89.
The national-scale NDVI development graph shows that the NDVI values were generally lower as compared to the 5YA, but close to that of the corresponding season in 2023 from September to October. The crop conditions were different from the 5-year average from July to September. The NDVI spatial distribution shows that from July to October, crop conditions in 41.1% of the cropped areas were below the 5-year average (marked in orange). However, 10.8% of the spatial NDVI distribution was in poor condition from the beginning of July to the end of August, but it exceeded the average from September until the end of this reporting period. Regions marked in blue (36.9% of the cropped areas), primarily located in the eastern and western regions, experienced below-average crop conditions."
Notably, by the end of this analysis, particularly for precipitation, CPI and CALF indicated similar crop conditions reported in 2023, highlighting severe anomalies and prolonged drought conditions.
Figure.1: Phenology map
Figure.2: Time series temperature pofile
Figure.3: Time series rainfall pofile
Figure.4: Crop condition development graph based on NDVI
Figure.5: CALF
Figure.6: Potential biomass departure from 5YA
Figure.7: Maximum VCI
Figure.8: Spatial distribution of NDVI profiles
Figure.9: CPI
Table.1: Country’s agroclimatic indicators by sub-national regions, current season's values and departure from 15YA, July 2024– Oct. 2024
Region | RAIN | TEMP | RADPAR | BIOMSS | ||||
Current (mm) | Departure from 15YA (%) | Current (°C) | Departure from 15YA (°C) | Current (MJ/m 2) | Departure from 15YA (%) | Current (gDM/m 2) | Departure from 15YA (%) | |
DZA Algeria | 48 | -48 | 24.2 | 1.1 | 1322 | 1 | 547 | -8 |
Table.2: Country’s agroclimatic indicators by sub-national regions, current season's values and departure from 15YA, July 2024– Oct. 2024
Region | CALF | MaximumVCI | CPI | |
Current(%) | Departure from 5YA (%) | Current | Current | |
DZA Algeria | 13 | -18 | 0.42 | 0.89 |