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POPULATION DYNAMICS OF PLANT PARASITIC NEMATODES OF SUGARCANE ( Saccharum officinarum L.). Aamir Shahazad (Nematologist) Dr. Shahid Afghan (Director Research) Shakarganj Sugar Research Institute, Toba Road, Jhang. INTRODUCTION.

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POPULATION DYNAMICS OF PLANT PARASITIC NEMATODES OF SUGARCANE (Saccharum officinarum L.)

Aamir Shahazad (Nematologist)

Dr. Shahid Afghan (Director Research)

Shakarganj Sugar Research Institute,

Toba Road, Jhang

slide2

INTRODUCTION

  • A survey on frequency and abundance of plant-parasitic nematodes 2008-2009
  • Locations selected
  • Sample size
  • Population trends of nematodes on plant and ratoon crops
  • Population range of plant parasitic nematodes
  • Identification of Genera (Helicotylenchus and Tylenchorhynchus)
  • Prominence range (20 % to 45.9 %)
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The Nematode Community...

Tylenchorhynchus spp.

Meloidogyne Spp.

Ascaris lumbricoides

Helicotylenchus spp.

Hoplolaimus spp.

Pratylenchus spp.

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Materials and Methods

Survey of Plant Parasitic Nematodes

  • Soil Sampling
  • Sieving
  • Processing
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Genera Identification

Quantitative Analysis:

Nematodes Population in 5 ml of suspension:

1 2 3 Mean

1363 1332 1468 1388

5 ml of suspension contain Nematodes = 1388

1 ml _____________________ = 1388/5

100 ml ___________________ = 1388/5*100

= 27760

Total no. of Nematodes in 500gm of Soil= 27760

Qualitative Analysis:

Total no. Plant Parasitic Nematodes in 100 ml = 523

Helicotylenchus =202 Pratylenchus = 58

Hoplolaimus = 29 Hemicriconemoide = 234

523 no. plant parasitic nematodes contain Hemi.= 234

1 ______________________________ = 234/523

100 _____________________________ = 234/523*100

Hemicriconemoide in sample is = 45 %

Plant parasitic nematodes were identified up to genera level comparing their morphology with the coordination of “ National Nematological Research Centre”(NNRC), Karachi University. But Root knot nematodes were identified up to genera level by studying their morphology and perineal pattern (Taylor and Sasser1978).

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Results and Discussion

Results and Discussion

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Table-3 Distribution of Plant Parasitic Nematodes associated with sugarcane

0 = not recorded; + = Present in survey; ++ = Common; +++ = Widespread

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Discussion

  • Survey showed that Tylenchorhynchus, Helicotylenchus, Hemicriconemoide and Pratylenchus were the most frequently found genera of Nematodes in Central Punjab.
  • Problem was more severe in ratoon crop than plant crop.
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Conclusion

  • The results indicate Helicotylenchus, Pratylenchus, Meloidogyne, and Hemicriconemoidespp., were the most common nematodes in cane fields.
  • Nematode population was higher in sandy soil compared to Clay loam soil.
  • Previous studeis has shown that nematodes caused a significant reduction in yield and quality of sugarcane crop.
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Control Measures

Sanitation: Avoid introducing pests to new locations

Crop Rotation: Reducing population in a site by growing a poor

or non host

Heat Therapy: Pasturization and Solarization of soil

Biological Control: Use of Pasturia, Dactyleria brochophaga, Arthrobotrys oligospora

Use of Chemical: Methyl Bromide, Carbofuran @ 8 kg per acre. May be mixed with basal doze of fertilizer at planting time.

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References

  • Anonymous 2009. Economic Survey on Crop situation. Federal Bureau of stistics. Government of Pakistan, Islamabad. pp 10.
  • Anwar, S. A.; Kallu, M. A.; Javid, M.A. and Khan, S. H., 1986. Nematode parasites of sug­arcane J. Agri. Res., Lahore, 24: 123-127. Choice
  • Cueva, C. & Carbonell, E. (1979). Sugarcane nematodes in peru. Boll. Tech. Divn. Tech. Instt.Central invest Azuc., 8: 59-68.
  • Gul, F. and P. Khan (2005) Assessment of plant parasitic nematodes associated with sugarcane crop in district Charsadda, NWFP province. Pak. J. Nematol, 23(1): 51-56.