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Standardization of Soil Media for Roof Top Gardening of Dragon Fruit (2019–2020)

M. S. Rahman
Fruit Research Farm of Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

A. Akter
Fruit Research Farm of Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

R. Sultana
Fruit Research Farm of Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

M. Yasmin
Fruit Research Farm of Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the RARS, Jamalpur during 2019-20 to standardize the soil media interms of plant growth, fruit retention as well as yield and quality of dragon fruit for roof top gardening. There were seven treatments i. e. T₁ = 50 % soil + 50 % cowdung, T₂ = 75 % soil + 25 % cowdung, T₃ = 50 % soil + 25 % sand+ 25 % cowdung T₄ = 50 % soil + 50 % vermicompost, T₅ = 75 % soil + 25 % vermicompost, T₆ = 50 % soil + 25 % sand + 25 % vermicompost, T₇ = 100% soil.The highest plant height (2.38 m) was observed in 50 % soil + 50 % vermicompost followed by 50 % soil + 50 % cowdung (2.36 m), 75 % soil + 25 % vermicompost (2.19 m), 75 % soil + 25 % cowdung (2.17 m) and the lowest plant height (1.75 m) was observed in 100% soil (control). The highest tree volume (4.28 m³) was found in 50 % soil + 50 % vermicompost and the lowest tree volume (1.91 m³) was obtained from 100% soil (control). The maximum number of fruits plant^-1 (8.66) was observed in 50 % soil + 50 % vermicompost and 50 % soil + 50 % cowdung whereas the minimum number of fruits plant-1 (2.0) was observed in 100% soil (control).

Keywords: Soil media, Plant growth, Fruit retention, Dragon fruit, Rooftop gardening.

Location: Fruit Research Farm of Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Farming System

Commodity: Dragon fruit

Objectives:

To standardize the soil media in terms of plant growth, fruit retention as well as yield and quality of dragon fruit for rooftop gardening.

Methodology:

The experiment was conducted at the rooftop of SA building, RARS, Jamalpur during 2019-20. The initial collected soil sample, vermicompost and cowdung before establishing the experiment were analyzed in the laboratory. BARI Dragon fruit-1 was used as variety in the experiment. Cuttings of dragon fruit were planted on 6th March 2019 with a spacing of 1.5 x 1.5 m. The aluminum drum was used as planting pot. There was water passing pathway and bricks pieces were placed at the bottom of the drum. Then mixed growth media were placed with the designed ratio in the drum. There were 7 treatments i.e. T₁ = 50 % soil + 50 % cowdung, T₂ = 75 % soil + 25 % cowdung, T₃ = 50 % soil + 25 % sand+ 25 % cowdung T₄ = 50 % soil + 50 % vermicompost, T₅ = 75 % soil + 25 % vermicompost, T₆ = 50 % soil + 25 % sand + 25 % vermicompost, T₇ = 100% soil. The trees were fertilized with 100 g urea, 100 g TSP, 50 g MoP, 50 g gypsum and 50 g zinc sulphate in two split doses within 6 months and another two split applications of the same doses of fertilizers for the next 6 months i.e. 4 times applications of fertilizer doses with 3 months interval. Adequate care and management of the plants in the experiment were taken as per need. Intercultural operations such as weeding, spading, irrigation and plant protection measures were done as and when required. The data on the following parameters such as plant height, canopy spread, tree volume and number of fruits were recorded. The collected data were calculated. The soil used in the rooftop garden is sandy loam in texture having pH 6.4, organic matter was low (1.32%) and total N content was very low (0.041%). Available P, K, S & B) were low, medium, medium and low respectively but available Ca, Mg and Zn were at a satisfactory level.

Source of Information: Annual Research Report 2019-2020, Horticulture Research Centre, BARI, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering plant growth, the treatment T₄that is 50 % soil + 50 % vermicompost gave a better performance than other treatments. The experiment will be continued for confirming the result.

Knowledge Management: Report/Proceedings