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Research Detail

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M.S.A. Khan
SO
Agronomy Division, Gazipur

K. Islam
SO
ARS, Munsigong

A field experiment was conducted at the farmers’ field of Munshigaonj and On-farm research station, Rangpur, BARI during rabi season of 2005-06 to find out the optimum rate of herbicide and time of application against Bathua (Chenopodium album) weed in potato fields. Herbicide Ronstar 25 EC were evaluated through post planting pre-emergence and post emergence (9 days after planting) spraying with different rates on weed management in potato fields. Post planting post emergence spraying of Ronstar 25 EC @ 1.0 upto 3.0 liter/ha controlled all Bathua (Chenopodium album) weed. Among the different rates of herbicide Ronstar 25 EC @1.0 upto 3.0 liter/ha showed similar results in controlling other broad leaf weeds particularly of Amaranthus viridis (Shaknotey), Alternanthera philoxeroides (Maloncho), Lindernia anagallis (Panigas), Gnaphalium affine (Bonocopy), Oxalis europea (Amrul) and Glinus lotoides (Carpet agacha) in both the locations.  The highest tuber yield (23.39 t/ha) recorded from mulching plus herbicide spraying followed by one time uprooting of weeds by hand at 25 DAP, mulching plus herbicide spraying (22.93 t/ha), mulching plus two times uprooting by hand (22.89 t/ha), weed free plots (22.46 t/ha), mulching plus one time uprooting by hand (22.26 t/ha) and only mulching (21.07 t/ha) treatment.

  Efficacy, Herbicide Ronstar 25 EC, Bathua weed, Potato
  Munshigaon and Rangpur Munsigong and ARS, Rangpur Munshigaon, Rangpur
  26-11-2005
  00-00-2006
  Pest Management
  Potato

To find out the optimum rate of Ronstar 25 EC and time of application against Bathua weed in potato fields.

The experiment was conducted at the farmers’ field, Munshigaonj and On-farm research station, Rangpur, BARI during rabi season of 2005-06. Herbicide Ronstar 25 EC were evaluated through post planting pre-emergence (Just after planting) and post emergence (9 days after planting) spraying with different rates on weed management in potato fields. The treatments were i) Control (no weed management), ii) pre- emergence Ronstar 25 EC 3.0 l/ha, iii) post- emergence Ronstar 25 EC 3.0 l/ha, iv) pre- emergence Ronstar 25 EC 2.0 l/ha, v) post- emergence Ronstar 25 EC 2.0 l/ha, vi) pre- emergence Ronstar 25 EC 1.0 l/ha, vii) post- emergence Ronstar 25 EC 1.0 l/ha, viii) pre- emergence Ronstar 25 EC 0.5 l/ha, ix) post- emergence Ronstar 25 EC 0.5 l/ha, and x) weed free. The unit plots size was 3m x 4m. The potato variety diamant was used as the test crop. The crop was planted on November 26, 2005 at Munshigaonj and December 4, 2005 at Rangpur maintaining spacing of 60 cm x 15 cm. The crop was fertilized with 150-43-140-22 kg N-P-K and S/ha. The experiment was conducted in RCB design with three replications. Data on weed population and their biomass were taken at 35 days of planting.

  Annual Report, Agronomy Division 2005-2006
  
Funding Source:
1.  Asian Development Bank Budget:  15,000/-
   15,000/-

Yield of potato tubers were significantly increased up to 38 and 42% over control by spraying Ronstar 25 EC @ 1.0 liter /ha at Munshigaonj and Rangpur, respectively.

  Report/Proceedings
  

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