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Research Detail

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SHAMIMA NASREEN
Chief Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701, Bangladesh.

R. AHMED
Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701, Bangladesh.

M. A. ULLAH
Principal Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701, Bangladesh.

M. A. HOQUE
Director
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Gazipur 1701, Bangladesh.

The study was carried out at the farmer's field of Juri Upazilla, Maulavibazar District during 2008-2009, 2009-2010, and 2011-2012 to find out the proper combination of fertilizer nutrients that promotes better fruit yield and quality of mandarin (cv. Khashi Kamla). The treatments were Native nutrient i.e., control (T1), N150P50K150Mg30 (T2), N200P75KI75Mg40 (T3), N250P100 K2ooMg50 (T4), N300P125K225Mg6o (T5), and N200P75KI75Mgo (T6) g/plant/year. In addition, 20 kg cowdung/plant was used as blanket dose. Yield components, yield, and TSS content (%) of mandarin varied significantly due to variation of nutrients in all the test years. Fruit yield/plant was improved significantly with increase in NPK and Mg dose irrespective of years. Application of Mg in combination with NPK increased 17-157% mean fruit yield over magnesium control. Significantly the highest yield and yield attributes were recorded under treatment N300 Pl25 K225 Mg60 g/plant (T5) along with 20 kg cow dung/plant in all the years. Total soluble sugar (%) content was also maximum in trees receiving N300P125K225Mg30 g/plant. The highest gross margin and marginal rate of return were achieved by the same treatment (T 5)' The lowest fruit yield/plant was obtained from untreated control plot (native nutrient). Three years' study revealed that application of N300P125K225Mg6o along with 20 kg cowdung/plant would be economically optimum for achieving higher yield and better fruit quality in mandarin grown under piedmont plain soil.

  Effects of N, P, K, and Mg, Yeld of mandarin, Fruit quality
  Juri Upazilla, Maulavibazar District
  00-00-2008
  00-00-2012
  Crop-Soil-Water Management
  Fertilizer

To find out the proper combination of fertilizer nutrients in presence of organic manure for maximizing yield and better quality fruits of mandarin.

The studies were conducted at the farmer's field of Juri Upazilla, Moilovibazar district during 2008-2009,2009-2010, and 2011-2012. The soil of the experiment field is silty clay in texture belonging to the piedmont plain. Soil samples were collected from the experimental field from a depth of 0-20 cm prior to application of fertilizers in all the years. Organic matter content of the soil was very low. The soil was acidic in nature. Total N, exchangeable K, Ca, Mg, and available Zn were found to be below the critical level. Six treatments consisted of T1: native nutrient i.e., control, T2:N150P50K150Mg30, T3:N2ooP75KI75Mg4o. T4:N250P100K2ooMg50, T5:N300P125k225 Mg6o, and T6:N2ooP75KI75 Mg0 g/plant/year. In addition, 20 kg cowdung was used to each plant as blanket dose. The experiment was laid out in a randomized complete block design with three replications. Fertilizers N, P, K, and Mg were applied to the field of 15 plants out of total 18 plants and doses were made constant after 10-year age of the plant as urea, triple super phosphate, muriate of potash, and magnesium sulphate, respectively. Full quantity of cowdung was applied to all plants during October. Nitrogen was applied in three splits during October, March, and May. Phosphorus, potassium, and magnesium were applied together after harvesting (during March). The test variety was Khashi Kamla (local). Intercultural operations were done as and when required. Mature fruits were harvested from 1st week of October to end of October 2009, 2010, and 2011. Ten fruits of different sizes and shapes from each tree were randomly selected treatment-wise for data collection. All the collected data on different parameters were analyzed through MSTAT programme. The Least Significant Difference (LSD) test was used for mean separations of the studied parameters.

  Bangladesh J. Agril. Res. 38(3): 425-433, September 2013, ISSN 0258-7122
  
Funding Source:
  

Three years' study revealed that application of fertilizers at the rate of N300PI25K225 Mg60 g/plant along with 20 kg cowdung/plant would be economically optimum for achieving higher yield and better fruit quality of mandarin in piedmont plain soil of Juri Upazilla, Moluvibazar.

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