MSIRI Sugar Cane Crop Report - End September 2008

> MSIRI Sugar Cane Crop Report - End September 2008

MAURITIUS SUGAR INDUSTRY RESEARCH INSTITUTE

 

                                                                                                                                                                   6 October 2008

 

 SUGAR CANE CROP 2008

 

Status:  End September

1.          CLIMATE

1.1        Rainfall

Rainfall recorded during the month of September 2008 over the cane areas of the island was 361 mm and represented 436% of the long term mean (83 mm) of the month.  It was 268 mm in the North, 444 mm in the East, 381 mm in the South, 243 mm in the West and 386 mm in the Centre.  These amounts represented 609%, 562%, 340%, 1215%, and 306% of the respective long term mean for the sectors.

Rainfall for the period October 2007 to September 2008 for the island amounted to 2 425 mm, i.e. 118% of the long-term mean of 2060 mm.  During the same period, 1 616 mm were recorded in the North, 2883 mm in the East, 2802 mm in the South, 1 112 mm in the West and 2 923 mm in the Centre.  These cumulated rainfall represented 121%, 140%, 110%, 121% and 105% of the respective long-term mean. Rainfall recorded in all sectors was excessive for proper ripening.

Table 1a. Rainfall (mm) of September for crops 2007, 2008 and the long term mean (LTM)

North

East

South

West

Centre

Island

2007

27 (61)

95 (120)

116 (104)

6 (30)

102 (81)

80 (96)

2008

268 (608)

111 (562)

381 (340)

243 (1 215)

386 (306)

361 (436)

LTM

44

79

112

20

126

83

* figures in brackets are % of  LTM

Table 1b. Cumulative rainfall (mm) from October 2007 to September 2008 for crop 2008 compared to that of crop 2007 and the long term mean (LTM)

North

East

South

West

Centre

Island

2007

1 080 (81)

2 372 (92)

986 (107)

6 (30)

2 730 (98)

1 992 (97)

2008

1 616 (121)

2 883  (140)

2 802 (110)

1 112 (121)

2 923 (105)

2 425  (118)

LTM

1 341

2 065

2 557

918

2 790

2 060

                                 * figures in brackets are % of  LTM                                 

[Source : raw provisional data from Meteorological Services]

1.2        Temperature

Data on maximum and minimum temperatures recorded during the month of September 2008 on MSIRI agro-meteorological stations are given below.

The mean maximum temperature was above normal at Réduit, Belle Rive and Union Park by 0.8oC , 1.4oC and 1.2oC respectively whereas at Pamplemousses it was below normal by 0.2oC.  Above normal mean minimum temperature was recorded at Pamplemoussess (1.5oC), Réduit (1.4oC), Belle Rive (1.9oC) and Union Park (1.9oC).  The resulting mean amplitude was below normal at all stations, namely by 1.7oC, 0.6oC, 0.5oC and 0.7oC at Pamplemoussess, Réduit, Belle Rive and Union Park respectively.  Lower temperature amplitudes and particularly above normal minimum temperatures are detrimental to ripening.

Table 2.  Maximum and minimum air temperature recorded on MSIRI agro-meteorological stations during September 2008

Station

Maximum (oC)

Minimum (oC)

Amplitude (oC)

Pamplemousses

26.7 (26.9) *

18.1 (16.6)

8.6 (10.3)

Réduit

24.1 (23.3)

17.1 (15.7)

7.0 (7.6)

Belle Rive

24.1 (22.7)

16.1 (14.2)

8.0 (8.5)

Union Park

23.4 (22.2)

17.2 (15.3)

6.2 (6.9)

* figures in brackets are the Normal (1971-00) 

1.3        Sunshine

Data from the MSIRI agro-meteorological stations showed that sunshine hours during September 2008 were below normal at all stations.  Recorded bright sunshine as a percentage of the normal amounted to 90 at Pamplemousses, 98 at Réduit, 97 at Belle Rive and 85 at Union Park.  Lack of solar radiation also does not favour ripening.

Table 3.  Sunshine duration recorded on MSIRI agro-meteorological stations during September 2008


Station

September 2008

Normal

% of Normal

Pamplemousses

203

224

90

Réduit

215

219

98

Belle Rive

191

196

97

Union Park

128

150

85

 

2.          Sucrose Accumulation (Tables 4a and 4b)

Cane samples from miller-planters’ land in all factory areas and covering the main cultivated varieties were analyzed for sucrose content.  The average pol % cane (richesse) was calculated on the basis of area under cultivation of each variety in the different factory areas of each sector.  The results are compared with those of last year and with those of the reference year 2001.

The richesse at end-September 2008 was 14.7% in the North, 15.1% in the East, 14.3% in the South, 15.2% in the West and 14.1% in the Centre compared to 16.0%, 15.3%, 14.8%, 15.2% and 14.4% respectively for the corresponding month in 2007.  In the West, richesse was similar to that of the corresponding period in 2007, whereas in the other sectors it was lower, the difference being 1.3o in the North, 0.2o in the East, 0.5o in the South and 0.3o in the Centre.  Compared with the corresponding period in 2001, the reference crop, richesse at the end of September 2008 was lagging behind in all sectors, by 0.9o in the North, East and Centre, 2.1o in the South and 0.5o in the West.

During the month of September, richesse for the present crop has increased by 1.0o in the North and 0.3o in sectors East, West and Centre.  In the South, no increase in sucrose content was recorded during the present month.  For the corresponding period last year, the increases were 1.4o in the North, 1.0o in the East and 0.7o in the South, West and Centre.

 

Island-wise, the richesse of 14.7% recorded at the end of September 2008 was lower than that of the corresponding period in 2007 and 2001 by 0.5o and 1.3o, respectively.  Compared to end-August 2008, sucrose content for the island had increased by 0.4o, which was below the gain of 0.9o recorded for the same period in 2001 and 2007.

3.          CROP 2008

As at 27 September 2008, about 52% (18 065 ha) of miller-planters’ land had been harvested compared with 59% (20 944 ha) at the corresponding period last year.  Sector-wise and again for miller-planters only, harvest reached 44% in the North, 55% in both the East and South, 45% in the West and 49% in the Centre.  An analysis of cane and sugar productivity based on harvest statistics for miller-planters is given below. 

However, it should be noted that following centralization of milling activities and the transfer of canes from one factory area to another, the comparisons made are not strictly comparable with those of 2007 except for the West and South sectors where data for the same factory areas are presented.  Since all the canes from the Centre sector is being sent to the East, harvest statistics in terms of extraction rate and sugar productivity have been combined for these two sectors.  In the case of the North sector, part of the cane is being channeled to FUEL.

3.1        Cane productivity

Cane productivity for the island as at 27 September 2008 amounted to 79.8 TCH compared to 72.2 TCH in 2007.  Sector-wise, to-date the best cane productivity has been recorded in the West with 88.9 TCH, followed by the South (83.6 TCH), the Centre (81.6 TCH), the East (76.7 TCH) and the North (68.6 TCH).  Cane productivity to-date had been higher in all sectors compared with the corresponding period in 2007, with an advantage of 8.0 TCH in the North, 10.0 TCH in the East, 3.6 TCH in the South, 6.6 TCH in the West and 10.9 TCH in the Centre.

Table 5.  Cane productivity (TCH) as at end August and September for the 2007 and 2008 crops

End

August

End

September
Sectors

2007

2008

2007

2008
North

58.9

67.8

60.6

68.6
East

67.7

76.1

66.7

76.7
South

81.3

83.9

80.0

83.6
West

84.7

86.7

82.3

88.9
Centre

70.6

80.1

70.7

81.6
Island

72.5

79.3

72.2

79.8

3.2        Extraction 

The recorded island extraction rate of 9.84% was lower than that of the corresponding period in 2007 (10.08%).  Sector-wise, extraction rates recorded until 27 September 2008 were 10.45% in the West followed by 10.09% in the East/Centre, 9.71% in the South and 9.21% in the North.  Compared with the corresponding period last year, extraction rate up to 27 September 2008 was inferior by 0.33o in the North, 0.22o in the East/Centre, 0.08o in the South and 0.27o in the West.

Since end August, 0.17o increase in extraction rate has been recorded for the island this year, an increment below that (0.37o) observed over the same period last year.

 

Table 6.  Extraction rate (%) as at end August and September for the 2007 and 2008 crops

End

August

End

September
Sectors

2007

2008

2007

2008
North

9.23

8.90

9.54

9.21
East/Centre

10.02

9.86

10.31

10.09
South

9.37

9.60

9.79

9.71
West

10.33

10.44

10.72

10.45

 

 

Island

9.71

9.67

10.08

9.84

 3.3        Sugar productivity 

Island-wise, the recorded sugar productivity of 7.85 TSH was higher than at the corresponding period in 2007 (7.28 TSH) by 0.57 tonne.  Sector-wise sugar productivity was 6.32 TSH in the North, 8.86 TSH in the East/Centre, 8.12 TSH in the South and 9.29 TSH in the West. Sugar productivity was higher than that of the corresponding period last year in all sectors with an increment of 0.54 TSH in the North, 1.90 TSH in the East/Centre, 0.29 TSH in the South, 0.47 TSH in the West and 0.57 TSH in the Centre.

Table 7. Sugar productivity (TSH) as at end August and September for the 2007 and 2008 crops

End

August

End

September
Sectors

2007

2008

2007

2008
North

5.44

6.03

5.78

6.32
East/Centre

6.85

7.60

6.96

8.86
South

7.62

8.05

7.83

8.12
West

8.75

9.054

8.82

9.29

 

 

Island

7.04

7.67

7.28

7.85
 

4.          CROP ESTIMATE

The better cane yield recorded since the start of the crop season has been maintained up to now.  However, extraction rates have not followed the expected trend and by end-September were lagging by 0.24o on last year’s performance at the same period.  The excessive rainfall of September 2008, while being detrimental to further ripening, will be beneficial in preventing cane desiccation during the usually dry months expected till the end of harvest.

Thus sugar productivity is expected to maintain itself at a higher level than last year with national production close to the crop estimates made.