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Phyto-toxicity Study of Organic Fertilizers

M Nazim Uddin
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

Ferdouse Islam
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

M Azamt Ullah
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

G M A Halim
Horticulture Research Centre, BARI, Joydebpur, Garizpur-1701, Bangladesh

Abstract/ Executive Summary:

A study has been carried out at the organic waste management laboratory of olericulture division, HRC, BARI, Gazipur 2017-18 to assess the phytotoxicity of compost prepared for amending the organic field A germination test was conducted on vegetables on okra using a mixture of sand and composts. Fifty seeds of okra were planted in a mixture of sand and compost. Olericulture division of HRC, BARI, develops BAOFER a modified version of Japanese Bokhashi and vegetable waste-based vermin-compost. A 2 kg amount of 30, 40 and 50 days old composts were collected from 30 cm composting pile during the composting process in each stage. The Compost and sand were mixed (volume basis) at mixing ratios of 75 to 25 and 50 to 50 compost and sand. The treatment are as BAOFER-30 (100:0, 75:25, 50:50) , BAOFER-40 (100:0, 75:25, 50:50), BAOFER-50 (100:0, 75:25, 50:50), BAOFER (c) (50:50), VC-30 (100:0, 75:25, 50:50) , VC-40 (100:0, 75:25, 50:50), VC-50 (100:0, 75:25, 50:50), VC (c) (50:50), and Sand (100 :00) was taken for absolutely control. Compost maturity and stability strongly influence crop growth and development. Considering the root growth and GI for the BAOFER 40 to 50 days require for maturity and VC requires 30 days and need to mixing with soil at least 3: 1 both the fertilizers. However, this type of study requires repeating with other crops to develop a model of predicting the compost maturity and stability.

Keywords: Vegetables, Organic fertilizer, Horticulture, Soil, Fertilizer

Location: Olericulture division, HRC, BARI, Gazipur, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Organic fertilizer, Vegetables

Objectives:

To assess the phytotoxicity of compost prepared for amending the organic field a germination of vegetables on okra using a mixture of sand and composts.

Methodology:

A study has been carried out at organic waste management laboratory of the olericulture division, HRC, BARI, Gazipur 2017-18 to assess the phytotoxicity of compost prepared for amending the organic field and finally suggest the stakeholder to practice. A germination test was conducted on vegetables on okra using a mixture of sand and composts. Fifty seeds of okra were planted in a mixture of sand and compost. Olericulture division of HRC, BARI, develops BAOFER a modified version of Japanese Bokhashi and vegetable waste-based vermin-compost. A 2 kg amount of 30, 40 and 50 days old composts were collected from 30 cm composting pile during the composting process in each stage. The Compost and sand were mixed (volume basis) at mixing ratios of 75 to 25 and 50 to 50 compost and sand. The treatment are as BAOFER-30 (100:0, 75:25, 50:50) , BAOFER-40 (100:0, 75:25, 50:50), BAOFER-50 (100:0, 75:25, 50:50), BAOFER (c) (50:50), VC-30 (100:0, 75:25, 50:50) , VC-40 (100:0, 75:25, 50:50), VC-50 (100:0, 75:25, 50:50), VC (c) (50:50), and Sand (100 :00) was taken for absolutely control. The experimental design used in this study was a completely randomized design with six replications. Six containers filled with sand were tested as a control. The containers kept saturated by regular watering. After 48, 72 and 96 h, the numbers of emerged seeds were counted. Then, seedlings were harvested and GI and length of the radicle were measured.

Seed germination (%) : (No. of seeds germinated in compost / No. of seeds germinated in control) x 100

Root elongation (%) : (Mean root length in compost / mean root length in control) x 100

Germination index : (seed germination (%) x root elongation (%))/100

Source of Information: Annual Research Report-2017-2017, Olericulture Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Compost maturity and stability strongly influence crop growth and development. Considering the root growth and GI for the BAOFER 40 to 50 days require for maturity and VC requires 30 days and need to mixing with soil at least 3: 1 both the fertilizers. Moreover, this type of study requires repeat with other crops as to develop a model of predicting the compost maturity and stability.

Knowledge Management: Report/Proceedings