Bulletin

wall bulletin
ArgentinaMain producing and exporting countries

Authors: 超级管理员 | Edit: zhuliang

The reporting period covers the main growing period of winter crops and the sowing of early maize and rice. In some parts, this is the fallow period between summer crops. Observed crop conditions in Argentina were poor for most of the country. Conditions were worst in the Humid Pampas which is the main agricultural area.

For the whole country, rainfall showed a strong negative anomaly (-24%), TEMP showed a slight positive anomaly (+0.1°), RADPAR showed a positive anomaly of +2% and BIOMSS, like RAIN, showed a negative anomaly (-12%).

CropWatch subdivides Argentina into eight agro-ecological zones (AEZ) based on cropping systems, climatic zones, and topography; they are identified by numbers on the NDVI departure cluster map. During this monitoring period, most crops were grown in the following four agro-ecological zones: Chaco (11), Mesopotamia (12), Humid Pampas (13), and Subtropical Highlands (17). The other agro-ecological zones are less relevant for this period. Wheat and maize are planted in the four AEZs, and rice is planted in Mesopotamia and East Chaco.

The following four AEZs showed negative anomalies in RAIN: Humid Pampas (-37%), Chaco (-30%), Subtropical Highlands (-23%) and Mesopotamia (-14%). TEMP showed positive anomaly for Humid Pampas (+0.6°) and negative anomalies of -0.3° for Chaco, Mesopotamia and Subtropical Highlands. RADPAR showed no anomaly for Humid Pampas and negative anomalies for Subtropical Highlands (-5%), Chaco (-3%) and Mesopotamia (-2%). Related to the poor conditions observed in RAIN, BIOMSS showed also negative anomalies in the four AEZs: Humid Pampas (-20%), Chaco (-14%), Subtropical Highlands (-7%) and Mesopotamia (-7%). Cropping intensity showed positive anomalies for Mesopotamia (+10%), Chaco (+7%) and Pampas (+1%), and negative anomalies for Subtropical Highlands (-4%).

CALF showed low values for Subtropical Highlands (48%), Humid Pampas (58%) and Chaco (68%). In  Mesopotamia, it was 97%. These values represent negative anomalies for Subtropical Highlands (-28%), Humid Pampas (-26%) and Chaco (-21%), and were also lower than those observed for November 2021 bulletin, suggesting a delay in the sowing date of summer crops or reduction in planted area of winter crops due to rainfall deficits. Maximum VCI showed quite low values for Humid Pampas (0.46), Chaco (0.58) and Subtropical Highlands (0.6), and good conditions in Mesopotamia (0.80). Crop condition index was quite low for whole Argentina (0.61), and particularly low for Chaco (0.47), Humid Pampas (0.54) and Subtropical Highlands (0.54). The index was near normal for Mesopotamia (0.89).

Spatial distribution of NDVI profiles allowed for the clustering of the area in five classes. Two profiles showed positive anomalies during part of the reporting period (blue and orange profiles) and three profiles showed negative anomalies during all the reporting period (dark green, light green and red profiles). A profile with positive anomalies during July and August and negative anomalies since September was observed in most of Mesopotamia, North East Chaco and West Subtropical Highlands (blue profile). Another profile with negative anomalies during July and positive anomalies since August was observed in a small area in South West Pampas. Dark green profile showed slight and stable negative anomalies during the reporting period and was located in the West and Center Pampas. Red profile showed stronger negative anomalies and was located mainly in South East and West Pampas, South Chaco and West Subtropical Highlands. Light green profile showed the strongest negative anomalies, in particular at the end of the reporting period, and was observed in North East Pampas and South Chaco.

For the whole country, crop condition development graph based on NDVI showed negative anomalies throughout the reporting period. Mesopotamia showed a profile with changes between negative anomalies (at beginning July and since the end of September) and positive anomalies (during August). Chaco and Subtropical Highlands showed almost no anomalies during July and August and negative anomalies since September. On the contrary, Pampas showed negative anomalies all along the reporting period.

Rainfall profile for Argentina showed negative anomalies since August. Differences were observed in rain profiles among the AEZs. Pampas and Chaco showed stronger negative anomalies than Subtropical Highlands and Mesopotamia. For Chaco, negative anomalies were observed in July, August and the beginning of September. In Pampas, stronger negative anomalies were observed during September and October. Temperature profile showed during most of the period no anomalies, excepting for the beginning and end of July with positive anomalies, and the end of September and mid-October with negative anomalies.

Maximum VCI showed in general poor conditions, with a dominance of cases with values lower than 0.5. Good conditions were only observed in North Mesopotamia, North East Chaco and a small area in South West Pampas. Crop condition classification based on Vegetation Health Index showed an increment in moderate and severe drought conditions at the end of the reporting period.

Several indicators showed below average conditions (RAIN, BIOMSS) for the whole country. VCIx showed a generalized pattern with low values in most of the Argentine agricultural area. Worst conditions with strong negative anomalies in RAIN and NDVI were observed in Humid Pampas, the main planting area for wheat. These conditions could have delayed the planting of summer crops and affected wheat yield, which at the end of the period was in heading stage. Cropped area of wheat could also have been reduced due to drought conditions observed already in the previous monitoring report. Normal conditions were observed in Mesopotamia and North East Chaco.


Figure 3.7 Argentina 's crop condition, July-October 2022

(a). Phenology of major crops


(b). Spatial distribution of NDVI profiles

(c). Crop condition development graph based on NDVI (Argentina)

(d). Crop condition development graph based on NDVI (Humid Pampas)

(e). Crop condition development graph based on NDVI (Chaco)

(f). Crop condition development graph based on NDVI (Mesopotamia)

(g). Crop condition development graph based on NDVI (Subtropical Highlands)


(h). Time series rainfall pofile (Argentina)

(i). Time series rainfall pofile (Humid Pampas)

(j). Time series rainfall pofile (Chaco)

(k).Time series rainfall pofile (Mesopotamia)

(l). Time series rainfall pofile (Subtropical Highlands)

(m). Time series temperature pofile (Argentina)


(n). Maximum VCI

(o). Crop condition classification based on Vegetation Health Index


Table 3.6. Argentina’s agroclimatic indicators by subnational regions, current season's values and departure from 15YA, July – October 2022


RAIN

TEMP

RADPAR

BIOMSS

Region

Current (mm)

Departure from 15YA (%)

Current (°C)

Departure from 15YA (°C)

Current (MJ/m2)

Departure from 15YA (%)

Current (gDM/m2)

Departure from 15YA (%)

Chaco

169

-30

17.5

-0.3

908

-3

539

-14

Mesopotamia

386

-14

15.5

-0.3

848

-2

768

-7

Humid Pampas

138

-37

13.2

0.6

894

0

442

-20

Subtropical Highlands

108

-23

15.5

-0.3

1065

-5

437

-7

Table 3.7. Argentina’s agronomic indicators by subnational regions, current season's values and departure from 5YA, July – October 2022


CALF

Maximum VCI

Cropping Intensity

Region

Current(%)

Departure from 5YA (%)

Current

Current(%)

Departure from 5YA (%)

Chaco

68

-21

0.58

117

7

Mesopotamia

97

-1

0.80

129

10

Humid Pampas

58

-26

0.46

114

1

Subtropical Highlands

48

-28

0.60

100

-4