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Application of Biochar as a Soil Amendment for Quality Tuber Production of Potato and Soil Health Improvement (2019-2020)

M. A. Rahman
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh.

F. S. Shikha
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

M. Yasmin
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

S. Akhter
Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

Biochar, a carbon-rich pyrolysed material, has received much attention of the researchers recently for its positive effect on soil properties, carbon sequestration and crop yield. A 2-factor experiment was conducted at Regional Agricultural Research Station, Jamalpur in 2019-2020 to investigate the quality tuber production of potato where two methods of biochar application as factor A and factor B was biochar doses consisting of 5, 7 and 10 t ha^-1. Result of the field trials indicates that integrated use of chemical fertilizers coupled with 7 t ha^-1biochar applied as furrow method can be recommended for achieving higher and quality potato yield in the Old Brahmaputra Floodplain areas (AEZ-9). Further investigation is needed to fix-up the biochar dose for economic and sustainable potato production.

Keywords: Tuber production, Potato, Biochar, Nutrient, Sulphate

Location: The farm land of Regional Agricultural Research Station (RARS) under Jamalpur Sadar upazila, Jamalpur, Bangladesh

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Crop-Soil-Water Management

Commodity: Soil Health, Bio fertilizer, Potato

Objectives:

To investigate the quality tuber production of potato where two methods of biochar application as factor A and factor B was biochar doses consisting of 5, 7 and 10 t ha^-1.

Methodology:

Field trial was set up at farm land of Regional Agricultural Research Station (RARS) under Jamalpur Sadar upazila which lies at 24.94⁰ N latitude and 89.93⁰ E longitude at an altitude of 16.46 meter from sea level. The site belongs to AEZ-9 (Old Brahmaputra Floodplain Soil) and topographically high land. Before initiation the experiment, the soil samples were collected from a depth of 0-15cm and analyzed following standard methods. Nutrient status of the initial soil is presented. The experiment was laid out in a randomized complete block design with three replications. The unit plot size was 2m x 4m having inter-plot space 0.75m and inter-block space 1m. The plots were surrounded by 0.3m wide and 10cm high earthen bunds with 10 cm deep and 1.0m wide irrigation channel along one side of the plots. The tested crop was BARI Alu-7 (Diamond) that was sown on 4 December 2019 maintaining the spacing 60cm X 30cm and harvested on 9 March 2020. There were six treatments combinations having two application methods viz. broadcast and furrow, and three doses of biochar viz. 5, 7 and 10 t ha^-1 as factor A and B, respectively. Fertilizers such as urea, TSP, MoP, gypsum, zinc sulphate and boric acid were used as sources of N, P, K, S, Zn and B, respectively. Soil test based chemical fertilizers of urea 225 kg, TSP 120 kg, MoP 225 kg, Gypsum 110 kg, zinc sulphate 10 kg and boric acid 9 kg were applied. Full dose of all fertilizers and half dose of urea was mixed with the soil at the time of final land preparation and rest of the urea was applied at the time of earthing-up. All the intercultural operations such as irrigation, weeding, pesticides use were done as and when necessary. Data on plant height, total number of tubers, infested tubers, weight of grade A and B tubers per plot and yield were recorded and analyzed statistically using R version 3.4.3 software.

Source of Information: Annual Research Report 2019-2020, Soil Science Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Result of the field trials indicates that integrated use of chemical fertilizers coupled with 7 t ha^-1biochar applied as furrow method can be recommended for achieving higher and quality potato yield in the Old Brahmaputra Floodplain areas (AEZ-9). Further investigation is needed to fix-up the biochar dose for economic and sustainable potato production. It is difficult to draw conclusion based on one year trial. All biochar treatment showed statistically identical results. Repeated trial will be done next year.

Knowledge Management: Report/Proceedings