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Performance of Gima Kalmi (ipomomea Reptans) Under Multilayer Agroforestry Systems as Influenced by Fertilizer Application

S. M. Shafi
Department of Agroforestry,BAU,Mymensingh

G. M. M. Rahman
Department of Agroforestry,BAU,Mymensingh

M. A. Rahim
Department of Agroforestry,BAU,Mymensingh

M. S. Alam
Department of Agroforestry,BAU,Mymensingh

Abstract/ Executive Summary:

The experiment was conducted at the Germplasm Centre, Horticulture Farm, Bangladesh Agricultural University, Mymensingh during the period from April to May 2007 to study the effect of different levels of fertilizer and canopy on the growth and yield of Gima Kalmi (Kangkong).The experiment consisted of four fertilizer levels viz., no fertilizer, recommend fertilizer, 20% and 40% less fertilizer of recommended dose and three canopy structure viz. no canopy (open area), lemon canopy and guava canopy were included in this experiment. The result revealed that plant height, number of leaves per plant, number of branches per plant, fresh weight of foliage per plant, yield per plot and yield per hectare grown under lemon and guava canopy showed significantly reduction than those grown in no canopy. The ranked order of different canopy structure for better performance were no canopy>lemon canopy>guava canopy. The maximum plant height and number of leaves, number of branches, fresh weight of foliage per plant were observed in recommended dose of fertilizer. A total of 7.39 t/ha yield was obtained at recommended dose of fertilizer at 45 DAS, whereas the lowest yield (5.79 t/ha) was found from the control treatment (no fertilizer).

Keywords: Performance, Gima kalmi (Ipomomea reptans), Multilayer Agroforestry, Fertilizer application

Location: Germplasm Centre, Horticulture Farm, Bangladesh Agricultural University, Mymensingh

Start Date: 00-04-2007

End Date: 00-05-2007

Program Area: Farming System

Commodity: Lemon, Guava, Spinach

Objectives:

1. To evaluate the comparative performance of gimakalmi grown under three years old guava and lemon tree species

Methodology:

The experiment was conducted in the field laboratory of Germplasm Centre of Fruit Tree Improvement Project, Horticulture Farm of Bangladesh Agricultural University, Mymensingh during the period from 3rd April to 17th May, 2007 to investigate the effect of different levels of fertilizer, plant density and canopy structure on the growth and yield of Gima Kalmi. In this research work, Gima Kalmi seed was used as the planting material. Seeds were used @ 10 kg/ha for 108 m² of land (rate 1 gm/1 m² land). The present experiment comprised of two factors, which are as follows. Factor A: Three canopy orientations: Open (without tree) canopy, (C₀) Lemon canopy (C₁) and Guava canopy (C₂); Factor B: Four doses of mixed fertilizer: No fertilizer (T_o), Recommended (Optimum) dose (T₁ ), 20% less than the recommended dose (T₂), 40% less than the recommended dose(T₃) was laid out following Randomized Complete Block Design (RCBD) with three replications. The following doses of manure and fertilizers were applied to grow the experimental crop. Cowdung 1 kg/Plot, Triple Super Phosphate (TSP) 11 gm/plot, Muriate of potash (MP) 11 gm/plot, Urea (No top dressing) 37 gm/plot .The unit plot size was 1.0 m × 1.0 m. Two seeds were sown directly in each planting hole at one cm depth and covered with a thin layer of soil. Thinning was done seven days after emergence and only one seedling was allowed to grow in each hill. Intercultural operation was done as and when necessary. Data were recorded on plant height, number of leaves per plant, number of branches per plant, yield per plant, yield per plot, yield per hectare. The mean differences were evaluated by Least Significant Difference (LSD) test.

Source of Information: J. Agrofor. Environ. 1(1): 2007; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The result revealed that plant height, number of leaves per plant, number of branches per plant, fresh weight of foliage per plant, yield per plot and yield per hectare grown under lemon and guava canopy showed significantly reduction than those grown in no canopy. The ranked order of different canopy structure for better performance were no canopy>lemon canopy>guava canopy. The maximum plant height and number of leaves, number of branches, fresh weight of foliage per plant were observed in recommended dose of fertilizer. A total of 7.39 t/ha yield was obtained at recommended dose of fertilizer at 45 DAS, whereas the lowest yield (5.79 t/ha) was found from the control treatment (no fertilizer).

Knowledge Management: Journal