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Growth and Yield of Gimakalmi (ipomoea Acquatica) as Influenced by Combinations of Nitrogen and Cowdung

Most. Altaf-Un-Nahar
Dept. of Biotechnology, EXIM Bank Agricultural University, Bangladesh

Md. Rezaul Karim
Dept. of Horticulture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Mostafizur Rahman
Dept. of Horticulture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The effect of different doses of nitrogen in combination with cowdung (CD) on the growth and yield of Gimakalmi was investigated at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh. Single factor experiment consisted of four nitrogen-cowdung treatment combinations, i.e., 0 kg N + 0 ton CD ha^-1 (without nitrogen and CD), 25 kg N + 5 ton CD ha^-1, 50 kg N + 10 ton CD ha^-1 and 75 Kg N + 15 ton CD ha^-1. The experiment was laid out in a randomized complete block design with four replications. The results of the study revealed that higher doses of nitrogen with CD produced the tallest (30.22 cm), highest number of leaves and branches (160.64 and 21.81, respectively) plant^-1, fresh weight leaves and foliage (49.96 g and 58.39 g, respectively) plant^-1 as well as yield (6.92 t ha^-1).

Keywords: Nitrogen, Cowdung, Growth, Gimakalmi

Location: Horticulture Farm of Bangladesh Agricultural University, Mymensingh

Start Date: 00-05-2014

End Date: 00-08-2014

Program Area: Crop-Soil-Water Management

Commodity: Manures, Vegetables, Fertilizer

Objectives:

To investigate the combined effect of nitrogen and cowdung on growth and yield of Gimakalmi.

Methodology:

The experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh during the period from May to August, 2014 to investigate the influence of different levels of nitrogen in combination with different doses of cowdung (CD) on growth and yield of Gimakalmi. Seeds of Gimakalmi (variety Gimakalmi^-1) were collected from Olericulture Division of Bangladesh Agricultural Research Institute (BARI). Single factor experiment was laid out following randomized complete block design with four replications comprised of four different levels of nitrogen in combination with CD namely, 0 kg N + 0 ton CD, 25 kg N + 5 ton CD, 50 kg N + 10 ton CD and 75 kg N + 15 CD ha^-1. In addition, the crop was fertilized with triple super phosphate (TSP) and muriate of potash (MoP) @ 10 ton, 75 kg and 25 kg ha^-1( BARC, 2012), respectively. Nitrogen was applied in the form of urea and the quantity of urea for the relevant doses of nitrogen (0, 25, 50 and 75 kg ha^-1) was 0, 54.35, 135.86 and 195.65 kg ha^-1, respectively. The entire dose of CD, TSP, MoP and one third of urea were applied as basal dose during final land preparation. The remaining nitrogen was applied as top dressing after each harvest except final harvest. There were 16 experimental plots. The size of the unit plot was 1.5 m x 1.0 m. Seeds were sown in each planting hole at 1 cm depth maintained 30 cm x 25 cm spacing between row and plant, respectively. Then the seeds were covered with a thin layer of soil. Thinning was done seven days after sowing (DAS) and only one healthy seedling was allowed to grow in each hill. Weeding and mulching were done as and when necessary. The plots were irrigated with watering cane. The first harvesting was done at 30 DAS and the plants were cut leaving 2 cm from the base of the plants. Harvesting was done at 30, 45, 60, 75 and 90 DAS. Ten plants were selected from each unit plot for the collection of data. The data were recorded on several parameters such as plant height, the number of leaves and branches per plant, fresh weight of leaves (only leaves) and foliage (leaves + stem) per plant and yield per hectare. The collected data were statistically analyzed following MSTAT program. The analysis of variance for all the characters under study was performed by F (variance ratio) test. The mean differences were evaluated by least significant difference ( LSD) test ( Gomez and Gomez, 1984 ).

Source of Information: Journal of Bioscience and Agriculture Research, Vol. 05, Issue 01 (2015): 10-15, eISSN: 2312-7945

Article Link (Online Journal): http://www.journalbinet.com/uploads/2/1/0/0/21005390/growth_and_yield_of_gimakalmi_as_influenced_by_combinations_of_nitrogen_and_cowdung.pdf

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results of the experiment showed that four different levels of nitrogen in combination with cowdung had significant variations on yield and yield components of Gimakalmi. Among the treatments, application of nitrogen 75 kg N + 15 ton cowdung ha^-1 performed the best compared to other treatments in respect of all parameters studied.

Knowledge Management: Journal