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Productivity and Profitability of Rice Cultivation as Affected by Different Nitrogenous Fertilizer and Weed Control Method

K P Halder
Chief Scientific Officer
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur

M R Manir
Senior Scientific Officer
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur

M S Islam
Principle Scientific Officer
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur

M M Rashid
Scientific Officer
Farm Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur

Abstract/ Executive Summary:

This experiment was conducted at the Bangladesh Rice Research Institute (BRRI) Gazipur Farm during T. aman 2007 season to determine the relative profitability of different types of N- fertilizer and weed control method. The treatments were use of three types N- fertilizer (PU= Prilled urea as per recommended rate of N and applied in 3 equal splits; USG₁= Broadcasting urea super granules as basal as per recommended rate of N; USG₂= Deep placement of USG as per recommended rate of N and applied as single dose and USG₃= Deep placement of USG as per recommended rate of N and applied in 2 equal splits) and three weed control methods (M₁= REFIT at 4 DAT + One hand weeding at 40 DAT ; M₂= Hand weeding at 20 and 40 DAT; and M₃= Weeding by weeder at 20 and 40 DAT). BRRI dhan41 was used for experimental purpose. It was observed that the interaction effect of method of weed control and application of N-fertilizer were significant on the production of tiller number, panicle number and grain yield. Two times deep placement of USG and application of refit produced the highest grain yield followed by hand weeding and weeder weeding. There was no significant difference among different weed control methods in prilled urea, broadcasting USG and deep placement of USG. Refit gave profit of Tk.6473 ha^-1 and Tk.3148 ha^-1 over hand weeding and weeder weeding, respectively. Weeder weeding gave a profit of Tk.3325 ha^-1 over hand weeding. If USG was deep placed in one time and two times instead of PU, the profit was Tk.4913 ha^-1 and Tk.3017 ha^-1, respectively. The loss of Tk.4162 ha^-1 was observed when USG was broadcasted instead of prilled urea application. It was also observed that two times deep placement instead of one time deep placement of USG gave a loss of Tk.1896 ha^-1.

Keywords: PU, USG, Weed control, Yield, Cost, Return, Rice. Fertilizer

Location: Bangladesh Rice Research Institute (BRRI) Gazipur Farm

Start Date: 00-00-2007

End Date: 00-00-2007

Program Area: Crop-Soil-Water Management

Non-commodity: Performance

Objectives:

The present study was conducted to determine the productivity and profitability of rice cultivation as affected by application of different nitrogenous fertilizer and method of weed control.

Methodology:

The experiment was conducted at the West Byde of BRRI farm, Gazipur during T. aman 2007 season. The treatments were different nitrogenous fertilizer and weed control method arranged in a Randomized Complete Block (Factorial) design with three replications. Factor A: Nitrogenous fertilizer- PU=Application of prilled urea (PU) as per recommended rate of N and applies 3 equal splits; USG₁=Broadcasting the urea super granules (USG) as basal as per recommended rate of N; USG₂= Deep placement of USG as per recommended rate of N and applies one time USG₃= Deep placement of USG as per recommended rate of N and applies 2 equal splits; Factor B: Weed control method- M₁= REFIT at 4 DAT + One hand weeding at 40 DAT; M₂= Hand weeding at 20 and 40 DAT; M₃= Weeding by weeder at 20 and 40 DAT. The unit plot size was 10m X 10m. BRRI dhan41 was used for experimental purpose. Fertilizer was applied at 80-60-40-20-10 kg of N, P₂O₅, K₂O, S and Zn per ha, respectively. Except urea other fertilizers were applied as basal. Urea was applied as per treatment. Thirty days old seedling @ 3 seedlings hill^-1 was transplanted. Data on labour requirement for different weeding methods, PU and USG application, yield and yield components were collected. Cost and return were worked out and partial budgeting was calculated. Yield and yield components data were analyzed by following a standard statistical procedure (Crop Stat) and the mean differences were adjusted by LSD method.

Source of Information: Eco-friendly Agril. J. 10 (01):01-06, 2017 (January)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that USG deep-placement appeared to be economically most viable treatment which produced higher yield than that of USG broad cast and prilled urea application. One time deep placement of USG gave the highest profit than application of PU and two times deep placement of USG. The application of refit at 4 DAT followed by one hand weeding at 40 DAT gave the highest profit than hand weeding and use of weeder.

Knowledge Management: Journal