issues and advances in postharvest disease management of mango · aslp mango supply chain...
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ASLP Mango Supply Chain Management Project
Issues and Advances in Postharvest Disease Management of Mango
under Pak-Australia Agri. Sector Linkages Program: Mango
Supply/Value Chain Management Projects
AMAN U. MALIK1, MUHAMMAD AMIN1, HABAT U. ASAD1, ABDUL REHMAN2 AND MUHAMMAD WAQAR ALAM2
1Postharvest Research and Training Centre (PRTC), Institute of Horticultural Sciences; UAF, Pakistan 2Department of Plant Pathology; UAF, Pakistan
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ASLP Mango Supply Chain Management Project
Top Ten Mango Producing & Exporting Countries in the World
(FAOSTAT, 2008)
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ASLP Mango Supply Chain Management Project
(MinFA, 2010)
Pakistan Mango Industry Outlook
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ASLP Mango Supply Chain Management Project
Pakistan Mango Industry Outlook (Cont’d)
• Mainly grown in two provinces (Sindh and Punjab)• Important Mango Cultivars
- *Sindhri- *Samar Bahisht Chaunsa- Sufaid Chaunsa- Kala Chaunsa- Dusehri- Anwar Ratole- Langra
*Samar Bahisht Chaunsa and Sindhri are major export varieties
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ASLP Mango Supply Chain Management Project
General Quality Issues in Mango
• Variation in Fruit Quality• Limited Shelflife• Postharvest diseases• No scientific data available on local cvs for
harvest & handling
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ASLP Mango Supply Chain Management Project
Major Postharvest Pathological Issues
• Anthracnose
• Body Rots- Stem End Rot (SER)- Side Rot
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ASLP Mango Supply Chain Management Project
(FAOSTAT, 2008)
Unit export value (US$/Ton) of top ten mango exporting countries
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ASLP Mango Supply Chain Management Project
Major Factors associated with disease development
• Environmental FactorsAbiotic
- Temperature- Humidity - Soil
Biotic- Vector pests population- Pathogen occurrence/
inoculums level
• Tree Factors-Tree health- Fruit maturity level at harvest
• Harvest & Handling Factors
- Harvest techniques (Sap)- Postharvest treatments- Handling conditions
a) Temperatureb) Relative Humidityc) Packaging
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ASLP Mango Supply Chain Management Project
ASLP Projects (Funding Agency: Australian Centre for International Agricultural Research-ACIAR)
Phase-I: Mango Supply Chain Management Project(2007-10)
Phase-II: Mango Value Chain Improvement Project(2011-15)
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ASLP Mango Supply Chain Management Project
Main Objective
To address key constraints currently limiting the competitiveness of supply/value chains for Pakistani mangoes
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ASLP Mango Supply Chain Management Project
Establishment of Postharvest Laboratory at UAF (2007)
Postharvest Lab was upgraded to Postharvest Research and Training Centre (PRTC) during March, 2011
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ASLP Mango Supply Chain Management Project
Progress made regarding Pathological Issues under the Project1. Evaluating the extent of different diseases at
postharvest level
2. Monitoring the losses caused by diseases in domestic and international/commercial supply chains
3. Identification of pathogens associated with fruit body rots
4. Management strategies for postharvest diseases in mango
- Precooling- Hot water treatment- Pre & Postharvest fungicidal applications- In vitro studies
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ASLP Mango Supply Chain Management Project
1. Extent of different postharvest diseases in mango
0.0
1.0
2.0
3.0
Anthracnose Stem End Rot Side Rot Distal End Rot Soft Rot
Mea
n Se
veri
ty (S
core
)
Disease ratings: 0= Nill, 1= 5-10%, 2= 10-25%, 3= >25% (P≤0.05)
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ASLP Mango Supply Chain Management Project
2. Monitoring of PH losses caused in domestic and commercial supply chains
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ASLP Mango Supply Chain Management Project
a) Domestic Supply Chains1. HYD-Sargodha: (cv. Sindhri)
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ASLP Mango Supply Chain Management Project
2. Multan-Karachi (cv. Chaunsa)
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ASLP Mango Supply Chain Management Project
Status of Postharvest Disease Development in Domestic Supply Chains
At Farm
At Retail
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ASLP Mango Supply Chain Management Project
b) Commercial Consignments1. Pakistan- Singapore (cv. Sindhri)
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ASLP Mango Supply Chain Management Project
Percentage of Different Categories of Air Freighted Chaunsa Mangoes at Retail Stores in UK
Blemishes, 38
Rots, 12
Normal, 50
Blemishes Rots Normal
2. Pakistan- UK (cv. SB Chaunsa)
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ASLP Mango Supply Chain Management Project
As a result, sales were poor and returns were low
3. Pakistan- Dubai (cv. SB Chaunsa)
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ASLP Mango Supply Chain Management Project
3. Pathogens isolated form SER infected fruits
Isolated pathogens/microbes Frequency (%)
Sindhri S.B. Chaunsa
Primary Pathogens
Alternaria alternata 49.27b 58.50a
Phomopsis mangiferae 19.97d 18.23d
Botryodiplodia Spp. 3.93e 2.73e
Secondary Pathogens
Others (Aspergillus sp., Penecillium sp., Xanthomonas sp. etc.)
26.80c 20.63d
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ASLP Mango Supply Chain Management Project
Phomopsis, Botryodiplodia & Alternaria alternataisolated from rotten mango tissues
Botryodiplodia Alternaria alternata colony
Phomosis mangiferae
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ASLP Mango Supply Chain Management Project
4. Management Strategiesa) Impact of precooling on postharvest disease development (cv. Sufaid Chaunsa)
Disease ratings: 0= Nill, 1= 5-10%, 2= 10-25%, 3= >25% (P≤0.05)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
Stem End Rot Side Rot
Seve
rity
(Sco
re)
Precooled Non-Precooled
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ASLP Mango Supply Chain Management Project
Precooled
Non-Precooled
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ASLP Mango Supply Chain Management Project
4. Management Strategiesb) Impact of hot water treatment on postharvest disease development in mangoes (cv. SB Chaunsa)
Disease ratings: 0= Nill, 1= 5-10%, 2= 10-25%, 3= >25% (P≤0.05)
0.000.200.400.600.801.001.201.401.601.80
HWT (52 C-5min)
HW Tecto-2000ppm (52 C-5min)
Dis
ease
Sev
erity
(Sco
re)
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ASLP Mango Supply Chain Management Project
HWT (52°C; 5 min dip)
2000ppm Tecto in HW (52°C, 5 min dip)
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ASLP Mango Supply Chain Management Project
T1 = Control (no fungicidal application)T2 = Carbendazim (@ 450mg/L)T3 = TECTO (@1.8ml/L) A.I. Thiabendazole (TBZ)T4 = Sportak (0.5 ml/L) A.I. ProchlorazT5 = TECTO (@1.8ml/L) + Sportak (0.5 ml/L)
4. Management Strategiesc) Impact of pre and postharvest fungicidal applications (cv. SB Chaunsa)
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ASLP Mango Supply Chain Management Project
Preharvest Application Postharvest Application
Grading , Packing, Precooling (10°C) and transport to PRTC
Harvesting
Storage (12°C; 80-85%RH) for 21 days
Ripening (30°C, 50-60%RH)
On tree application
(15 days prior to harvest)
Grading , Packing, Precooling (10°C) and transport to PRTC
Harvesting
Storage (12°C; 80-85%RH) for 21 days
Ripening (30°C, 50-60%RH)
HW Fungicidal dips (52°C- 5min dip)
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ASLP Mango Supply Chain Management Project
0.01.02.03.04.05.06.0
1
Seve
rity
(Sco
re)
Control Carbendazim Tecto Sportak Tecto + Sportak
0.0
1.0
2.0
3.0
4.0
5.0
6.0
1
Seve
rity
(Sco
re)
Control Carbendazim Tecto Sportak Tecto + Sportak
(a)
(b)
Effect of pre (a) and postharvest (b) fungicidal applications on postharvest disease development (severity)
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ASLP Mango Supply Chain Management Project
Postharvest Application of TBZ (900mg/L)+ Sportak (0.5ml/L)gave maximum Disease Control
Preharvest Application
Postharvest Application
Control
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ASLP Mango Supply Chain Management Project
3. Management Strategiesd) Impact of pre and postharvest fungicidal applications (cv. Sufaid Chaunsa) (2011)
Tested Chemicals
1. Nativo (0.3g/L)2. Cabriotop (3g/L)3. Scholar (0.6ml/L)4. Amistar (0.8ml/L)5. Sportak (0.5ml/L)
Findings:
• Preharvest application of Scholar better disease control at retail
• Postharvest application of Sportak (A.I. Prochloraz) affective against Anthracnose
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ASLP Mango Supply Chain Management Project
3. Management Strategiese) Impact of postharvest fungicidal applications (cv. SB Chaunsa)
At ripening after 4 weeks storage (11±1ºC; 80-85%RH)
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ASLP Mango Supply Chain Management Project
After 4 week storageControl HW Nativo-HW Scholar-HW Sportak-HW Amistar-HW
Control HW Nativo-HW Scholar-HW Sportak-HW Amistar-HW
At ripening
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ASLP Mango Supply Chain Management Project
4. Management Strategiesf) In Vitro Studies
Studies Chemicals CabriotopNativoScholarTectoAmistarProchloraz
Concentrations (ppm)50, 100, 150, 200, 250
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ASLP Mango Supply Chain Management Project
Mycelial appearance of Phomopsis mangiferae
250 ppm Nativo was most affective against P. mangiferae
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ASLP Mango Supply Chain Management Project
Mycelial Appearance of Colletotrichum gloeosporioides
200ppm Procholraz was most effective against C. gloeosporioides
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ASLP Mango Supply Chain Management Project
Mycelial Appearance of Botryodiplodia theobromae
200 and 250 ppm Prochloraz, Nativo and Tecto were equally affective against B. theobromae
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ASLP Mango Supply Chain Management Project
Mycelial appearance of Alternaria alternata
Nativo (200 & 250 ppm) was most affective followed by Tecto and Prochloraz against A. alternata
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ASLP Mango Supply Chain Management Project
Mycelial Appearance of Aspergillus niger
Prochloraz (200 & 250 ppm) was most affective followed by Scholar
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ASLP Mango Supply Chain Management Project
Mango Quality Improvement Workshops
Ms Jodie Campbell Training Workshop Participants at Ali Tareen Farm, Lodhran
Mango Quality Improvement Workshop Participants at Khakwani Fruit Farm, Shujaabad
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ASLP Mango Supply Chain Management Project
Conclusions• Post-harvest diseases (Anthracnose and Stem End Rot) are the
major causes of postharvest losses at wholesale and retail • Side rot is the major disease followed by SER and Anthracnose• Phomopsis mangiferae, Alternaria alternata and Botryodipodia Spp.
were isolated from rotten tissues
• Scholar, a potential new chemistry fungicide, gave better results atpreharvest level
• Prochloraz was affective against anthracnose• Nativo gave comparatively better management of SER in SB
Chaunsa mangoes
• Precooling coupled with HW fungicidal dips can give better diseasemanagement at postharvest level
• Diseases management at farm/pre-harvest stage is critical for disease control at postharvest/storage/shipping stage
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ASLP Mango Supply Chain Management Project
Ongoing Studies
• Orchard ratings• Irradiation• Temperature management• Exploring new chemistry fungicides
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ASLP Mango Supply Chain Management Project
Acknowledgements
AusAID/ACIAR & ASLP Supply Chain Project Team Postgraduate Students & Staff at Postharvest Research & Training
Centre, Institute of Horticultural Sciences (UAF) Dr. Abdul Rehman, Deptt. of Plant Pathology, UAF and his team Ali Khan Tareen Farm, Lodhran Lutfabad Mango Farm, Multan Bayer CropScience, Pakistan Syngenta Pakistan
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ASLP Mango Supply Chain Management Project