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Research Detail

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D. sarker
Senior Scientific Officer
Entomology Division, BARI, Gazipur

M. Mahmudunnabi
Scientific Officer
Entomology Division, BARI, Gazipur

S. N. Alam
Chief Scientific Officer
Entomology Division, BARI, Gazipur

A field study was conducted to find out the cost-effective application rate of neem oil cake along with time of application against rhizome pests of ginger at Entomology Farm, BARI, Joydebpur, Gazipur during April to December 2011. Seven treatments viz., T1 = neem oil cake @ 200 kg ha-1 during sowing; T2 = neem oil cake @ 300 kg ha-1 during sowing; T3 = neem oil cake @ 200 kg ha-1 at 1st symptom expression occurs; T4 = neem oil cake @ 300 kg ha-1 at 1st symptom expression occurs; T5 = T1 + T3; T6 = T2 + T4 and T7 = untreated control were assigned in this study. Results indicated that T6 i.e. two times application of neem oil cake @ 300 kg ha-1, 1st at seed sowing and 2nd at 1st symptom expression gave the best results in respect to lowest percentage of pseudo-stem damage (7.38%) and highest yield (8.92 t/ha). The highest marginal Benefit Cost Ratio (7.48) was also obtained from T6.

  Ginger,pest, neem oil cake
  Gazipur
  10-04-2011
  17-12-2011
  Pest Management
  Ginger

To document the cost-effective application rate of neem oil cake along with time of application against rhizome pests of ginger.

The research was conducted at Entomology Farm, BARI, Joydebpur, Gazipur during April to December 2011 ginger crop season with 7 (seven) treatments and 3 (three) replications following RCB design. The treatments were as follows: T1 = neem oil cake @ 200 kg ha-1 during sowing; T2 = neem oil cake @ 300 kg ha-1 during sowing; T3 = neem oil cake @ 200 kg ha-1 at 1st symptom expression occurs; T4 = neem oil cake @ 300 kg ha-1 at 1st symptom expression occurs; T5 = T1 + T3; T6 = T2 + T4 and T7 = untreated control. The unit plot size was 3m x 1.5m with an inter-plot distance of 1m. Rhizomes were sown maintaining 50 cm x 25 cm spacing in each plot. Well drainage condition was ensured to overcome from water logging during heavy rain at rainy season. The number of healthy and damaged pseudo-stem was recorded at fortnightly intervals starting from the date of first expression of damage symptom. The ginger rhizomes were harvested when the crop reached its full maturity. The yield of healthy rhizomes of each treatment was recorded separately. The data on the yield were calculated in tones per hectare.

  Annual Report 2011-2012, Entomology Division, BARI, Gazipur
  
Funding Source:
1.   Budget:  35,000.00
   35,000.00

Two times application of neem oil cake @ 300 kg ha-1, 1st at seed sowing and 2nd at 1st symptom expression could be recommended for managing rhizome pests of zinger.

  Report/Proceedings
  

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