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Mitigation of Arsenic Stress by Vermicompost and Inorganic Fertilizers in BRRI Dhan47

Mohammad Ashik Elahi Shohel
Agro-Environmental Chemistry laboratory, Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Md. Abdur Razzaque
Agro-Environmental Chemistry laboratory, Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Mominul Haque Rabin*
Agro-Environmental Chemistry laboratory, Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Mahbuba Siddika
Agro-Environmental Chemistry laboratory, Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Sheikh Shawkat Zamil*
Agro-Environmental Chemistry laboratory, Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Abstract/ Executive Summary:

This experiment was done to evaluate the influence of vermicompost and inorganic fertilizers for the mitigation of arsenic stress in BRRI dhan47. Five different doses of vermicompost and inorganic fertilizers i.e. To= Recommended doses of vermicompost without inorganic fertilizers, T1= Recommended doses of inorganic fertilizers without vermicompost, T2= Recommended doses of vermicompost + inorganic fertilizers, T3 = Reduction of 40% of recommended doses of inorganic fertilizers + Addition of vermicompost to supplement the reduction of inorganic fertilizers, T4= Reduction of 60% of recommended doses of inorganic fertilizers + Addition of vermicompost to supplement the reduction of inorganic fertilizers were applied under four levels of arsenic [As0=No arsenic applied, As1= 10 ppm arsenic, As2= 20 ppm arsenic, As3= 30 ppm arsenic] to observe the mitigation of arsenic. As0T2 gave maximum result in almost all the yield contributing parameters and grain yield of rice whereas As3T1 gave minimum results. The maximum N, P and K content in grain, straw and root were found in As0T2 and the minimum were observed from As3T1 treatment; whereas, highest As by As3T1 and lowest by As0T0.

Keywords: Mitigation; Vermicompost; Inorganic Fertilizer; Arsenic; Yield.

Location: Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka-1207

Start Date:

End Date:

Program Area: Risk Management in Agriculture

Commodity: Rice, Soil Arsenic, Fertilizer, Vermicompost and vermiculture

Objectives:

Management practices also can help for horizontal expansion of rice area and yield unit-1 area. Considering the above facts, the present study was under taken with the following objective:

To find out the suitable combination of vermicompost and inorganic fertilizers to mitigate the detrimental effects of arsenic stress in BRRI dhan47 with reference to yield and nutrient content of rice.

Methodology:

Experimental site The experiment was conducted under pot-culture at the net house and the agro-environmental chemistry laboratory of the Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University, Dhaka-1207 during the Boro season. Collection and preparation of soil A bulk volume of soil was collected at a depth of 0-l5 cm from the experimental field of Sher-e-Bangla Agricultural University. After collection, the soils were made free from the plant roots and unnecessary materials and dried under sunlight for 2 weeks. Then the soil sieved and mixed up thoroughly and ready for potting.

Pot preparation An amount of 8 kg soil was taken in a series of pots. The required number of plastic pots having 24 cm top, 18 cm bottom diameter and 22 cm depth were collected from the local market and cleaned before use. There were altogether 60 pots comprising 4 different treatments of arsenic to 5 different treatments of vermicompost and inorganic fertilizers with 3 replications. Water was added to the pot to bring the soil up to saturation. Treatments of the experiment The source of arsenic was Sodium Arsenate (Na2HAsO4.7H2O). Design: CRD with two factorials Factor A: Different doses of arsenic: 04 As0= (No arsenic applied), As1= (10 ppm arsenic on soil weight basis), As2= (20 ppm arsenic on soil weight basis), As3= (30 ppm arsenic on soil weight basis) Factor B: Different doses of vermicompost and inorganic fertilizers: 05 To = Recommended doses of vermicompost without inorganic fertilizers, T1 = Recommended doses of inorganic fertilizers without vermicompost, T2 = Recommended doses of vermicompost + inorganic fertilizers, T3 = Reduction of 40% of recommended doses of inorganic fertilizers + Addition of vermicompost to supplement the reduction of inorganic fertilizers, T4 = Reduction of 60% of recommended doses of inorganic fertilizers + Addition of vermicompost to supplement the reduction of inorganic fertilizers Treatment combinations = 4 x 5 = 20, Replications: 3 Collection of seed Seeds of BRRI dhan47 was collected from BRRI (Bangladesh Rice Research Institute), Joydebpur, Gazipur-1701, Dhaka.

Statistical Analysis The data were compiled and tabulated in proper form and were subjected to statistical analysis. Analysis of variance was done following the computer package MSTAT-C program developed by Russel (1986). The mean differences among the treatments were adjusted by least significant difference (LSD) test at 5% level of significance.

Source of Information: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) e-ISSN: 2319-2380, p-ISSN: 2319-2372. Volume 13, Issue 2 Ser. I (February 2020), PP 07-14

Article Link (Online Journal): DOI: 10.9790/2380-1302010714

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Arsenic toxicity adversely affects all the yield related attributes of BRRI dhan47. Use of vermicompost with inorganic fertilizers decreased the adverse effects of high arsenic toxicity on rice plant and improved all the traits mentioned above.

Knowledge Management: Journal