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Response of Onion to Npks Fertilizers in Low Ganges River Flood Plain Soil

M. R. Amin
Farm Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh

M. K. Hasan
On-Farm Research Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh

Q. Naher
On-Farm Research Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh

M. A. Hossain
On-Farm Research Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh

Z. U. Noor
Farm Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

An investigation was conducted at farmers’ field of Baliakandi, Rajbari, during three consecutive Rabi seasons of 2001 to 2003 to find out the optimum fertilizer dose of onion for greater Faridpur region under AEZ-12. Four different levels of NPKS viz. control, medium yield goal (MYG), high yield goal (HYG) and HYG X 1.3 were tested with Taherpuri variety of onion. Average of three years study reveals that a considerable response of onion to NPKS was observed. However, the response to N and P was more distinct in comparison to K and S. From the average yield data, a response curve was drawn and the relationship was quadratic in nature. The nutrient dose that maximized yield (107-72-90-33 kg NPKS/ha) as well as profit (95-50-70-32 kg NPKS/ha) of onion cultivation was found out from the response curve.

Keywords: Onion, Response, NPKS, Low Ganges flood plain soil

Location: Farmer's field of multilocation testing site (MLT), Baliakandi under Rajbari district

Start Date: 00-00-2001

End Date: 00-00-2003

Program Area: Crop-Soil-Water Management

Commodity: Onion

Objectives:

To find out the optimum fertilizer dose of onion for greater Faridpur region under AEZ 12.

Methodology:

The experiment was conducted on farmer's field of multilocation testing site (MLT), Baliakandi under Rajbari district during Rabi seasons of 2001, 2002 and 2003. The experimental plot of onion was laid out in randomized complete block design with six dispersed replications. The variety was Taherpuri. Seed rate was 3-4 kg/ha. The unit plot size was 8 m x 6 m. The initial soil status was organic matter range from 1.86 to 3.27 %. The total N was 0.16%. P, K and S level were 1.84, 0.44 and 18.84 microgram/gm soils, respectively. Four different levels of N, P, K and S were tested. Fertilizer doses were calculated according to original soil status of the experimental plots using Fertilizer Recommendation Guide (FRG). The entire quantity of P, K, S with one half of N were applied as basal dose at the time of final land preparation and the remaining half N was applied as top dress. The source of NPK and S were Urea, TSP, MP and Gypsum, respectively. The 45 days old onion seedlings were transplanted in the 1^stweek of January with a spacing of 20 cm x 8 cm. The remaining half of N was applied as top dress during first (25 DAT) and second mulch (55 DAT) in two equal splits. Two irrigations were applied before the first and second top dressing of N application. The crop was harvested in 1^stweek of April. Data on plant parameters, bulb yield and local market price of fertilizers and fresh onion were collected properly. The optimum and economic dose of fertilizer nutrients were calculated using the formula.

Source of Information: Int. J. Sustain. Crop Prod. 2(1): 11-14, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Fertilizer dose that maximized yield was 107-72-90-33 kg NPKS/ha while 95-50-70-32 kg NPKS/ha was profitable for onion in respect of yield and economics. The present recommended dose is relatively lower but judicious that ensures higher yield than that of farmer’s traditional practices and will be helpful to improve soil health for sustainable higher yield. So, 95-50-70-32 kg NPKS/ha for onion could be proposed for recommendation in greater Faridpur.

Knowledge Management: Journal