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Research Detail

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Jubaidur Rahman
Agronomy Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Mukaddasul Islam Riad
Plant Genetic Resources Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Fouzia Sultana Shikha
Soil Science Division, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Refat Sultana
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Mohammad Monirul Hasan Tipu
Tuber Crops Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

An experiment was conducted at the Regional Agricultural Research Station, Jamalpur during the rabi season of 2014-2015 to find out suitable sowing date of sweet corn as an intercrop with potato, to grow easily two crops in the charland farmers and to find out agro-economic performance of potato + sweet corn intercropping. Six treatments viz., simultaneous sowing of potato and sweet corn, sweet corn sown at 10 days after potato planting (DAPP), sweet corn sown at 20 DAPP, sweet corn sown at 30 DAPP, sole potato and sole sweet corn were tested in this study. Highest potato yield was obtained from sole potato treatment (27.4 t ha-1) which was similar to simultaneous sowing of potato and sweet corn (26.7 t ha-1) and sweet corn sown after 20 days of potato planting (26.7t ha-1). Potato equivalent yield (PEY) (38.4 t ha-1)highest gross return Tk. 460350 ha-1, gross margin Tk. 351391 ha-1 and benefit cost ratio 4.23 was observed from simultaneous sowing of potato and sweet corn (T1). The result indicated that simultaneous sowing of potato with sweet corn (T1) best performed in potato yield, sweet corn yield, gross return BCR and PEY compared with the other treatments.

  Sowing date, Intercropping, Charland area, Potato, Sweet corn
  Regional Agricultural Research Station, BARI, Jamalpur
  00-00-2014
  00-00-2015
  Farming System
  Maize, Potato

To find out suitable sowing date of sweet corn to intercrop with potato for maximum yield and profit.

Experimental site- The experimental site was of medium high land belonging to the agro-ecological zone Old Brahmaputra Floodplain under Agro-Ecological Zone 9 (UNDP & FAO, 1988). Cultivation procedure and experimental design- The experiment was conducted at the Regional Agricultural Research Station, Jamalpur during the rabi season of 2014-2015 to find out the suitable sowing date of sweet corn as an intercrop with potato and to find out agro-economic performance of potato + sweet corn intercropping. The treatments were- T1= Simultaneous sowing of potato and sweet corn, T2=Sweet corn sown after 10 days of potato planting, T3=Sweet corn sown after 20 days of potato planting, T4=Sweet corn sown after 30 days of potato planting, T5=Sole potato and T6 = sole sweet corn. BARI sweet corn-1 and Diamant (potato) variety were used in the experiment. Sole sweet corn (T6), Sole potato (T5) and Simultaneous sowing of potato and sweet corn (T1) treatments planting were done on 16 November 2014 while the other planting were done according to the treatments in RCBD design with three replications. Unit plot size was 5m × 4.5m. For sole potato and sole sweet corn fertilizers were applied @  N180, P40,  K180, S20,  Zn6,  B1.2  and  N160 P50, K100, S40, Zn4, B2 kg ha-1, respectively (FRG, 2012).  For intercrop fertilizers were applied @ N320, P73, K170, S50, Zn6 and B2 kg ha-1. The source of N, P, K, S, Zn and B was urea, TSP, MoP, gypsum, zinc sulphate and boric acid, respectively. In case of sole potato, half amount of urea and MoP and the whole amount of TSP, gypsum, zinc sulphate and boric acid were applied at the time of final land preparation. Remaining 1/2 amount of urea and MoP were applied at 30 days after sowing (DAS). For sole sweet corn, one-third of urea and whole amount of other fertilizers were applied at the time of final land preparation. Remaining 2/3 amount of urea was applied in two equal splits as side dressing at 30 and 55 days after sowing (DAS). In case of intercrop, one- third urea and of all other fertilizers were applied as basal. One-third urea and rest of all other fertilizers were side dressed at 30 DAP of potato and rest of urea was side dressed just after potato harvest followed by irrigation. Irrigation and other intercultural operations were done as and when required. Fungicide (Dithane M-45) was sprayed at every 10- day intervals beginning from 25 to 70DAP for preventing disease of potato. All data were taken at harvesting. Potato was harvested at 90DAP. Sweet corn was harvested at 115-120 DAS.    Data collection and statistical analysis- Randomly five potato plants were recorded earlier to collect the yield and yield contributing data. Yield attributes of sweet corn were also recorded from five plants selected randomly earlier and yield data was recorded considering the whole plot basis in case of both crops. Economic analysis was done in terms of total cost of cultivation, gross return and BCR. Data recorded on yield and yield attributes were analyzed statistically following MSTAT-C Programme. Mean separation was done as per LSD test at 5% level of significance.

  International Journal of Agronomy and Agricultural Research, Vol. 12, No. 2, p. 9-14, 2018
  http://www.innspub.net
Funding Source:
1.   Budget:  
  

From the result, it indicated that cultivation of potato with sweet corn sown at simultaneous sowing of potato with sweet corn, 10 DAPP and 20 DAPP might be agronomically feasible and economically profitable for sweet corn and potato intercropping system as compared to sole sweet corn. Simultaneous sowing of potato with sweet corn (T1) best performed in potato yield, sweet corn yield, gross return BCR and PEY compared with the other treatments. In addition fodder yield could be possible from sweet corn plant to mitigate the livestock feed to some extent.

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