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Integrated Nutrient Management for Sunflower in Coastal Char Land of Bangladesh

I.S.M. Farhad
Soil Science Division, BARI, Gazipur, Bangladesh

E. Jahan
Department of Agricultural Chemistry, SAU, Dhaka, Bangladesh

M.F.A. Anik
Soil Science Division, BARI, Gazipur, Bangladesh

M.M.U. Chowdhury
On-Farm Research Division, BARI, Noakhali, Bangladesh

S. Akhter
Soil Science Division, BARI, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at coastal charland of OFRD, BARI, Noakhali; MLT site, Amtoli, Barguna and ARS, Benarpota, Satkhira during Rabi season of 2018-19 to evaluate the effect of integrated nutrient management on growth,yield and economic performance of sunflower. Six treatment combinations viz. T₁= Soil test based fertilizer dose for HYG, T₂ = IPNS with 5 t ha^-1 cowdung, T₃= IPNS with 5 t ha^-1 compost, T₄= IPNS with 1.5 t ha^{- 1} vermicompost, T₅= Farmers’ practice and T₆= Absolute control were tested. The experiment was laid out in a randomized complete block design with 3 replications and BARI Sunflower^-2 was used as test crop.The IPNS treatment combinations are significantly different from rest of the treatments in terms of yield and economic return. Application of treatment IPNS with 1.5 t ha^-1 vermicompost significantly increased all of the parameters such as the plant height, head diameter, number of seed per head,1000 seed weight, seed yield and stover yield. The significantly highest seed yield (2.19, 2.23 and 2.06 t ha^-1 at Noakhali, Barguna and Satkhira, respectively) was recorded in IPNS with 1.5 t ha^-1 vermicompost treated plot (T₄) while the lowest seed yield (1.05, 1.10 and 1.02 t ha^-1 at Noakhali, Barguna and Satkhira, respectively) was observed in absolute control treatment (T₆). Salinity level increased at slower rate in T₂, T₃ and T₄, treatments where IPNS based nutrient management packages were imposed. During the crop growing period soil salinity ranged from 0.62 to 9.72dS m^-1, 0.58 to 9.23dS m^-1, 0.73 to 9.86dS m^-1 at Noakhali, Barguna and Satkhira, respectively from emergence to maturity stages of the crop. The highest net return (50790 Tk. ha^-1, 52765 Tk. ha^-1 and 43940 Tk. ha^-1 at Noakhali, Barguna and Satkhira, respectively) as well as BCR (1.75, 1.78 and 1.67 at Noakhali, Barguna and Satkhira, respectively) were obtained from T4 treatment (IPNS with 1.5 t ha^-1vermicompost) whereas the lowest net return (14900 Tk. ha^-1 ,15175 Tk. ha^-1 and 11570 Tk. ha^-1 at Noakhali, Barguna and Satkhira, respectively) and BCR (1.40, 1.33 and 1.26at Noakhali, Barguna and Satkhira, respectively) were obtained from control (T₆) treatment. The overall results indicated that IPNS with 1.5 t ha^-1 vermicompost is more effective than other fertilizer management packages in respect of yield as well as economic return for sunflower cultivation in the coastal charland of Bangladesh.

Keywords: Sunflower, Charland, Integrated nutrient management, BCR, Vermicompost

Location: OFRD, BARI, Noakhali

Start Date: 00-00-2018

End Date: 00-00-2019

Program Area: Crop-Soil-Water Management

Commodity: Sunflower, Fertilizer

Objectives:

1. To know the effect of integration of nutrients for cultivation of sunflower in coastal charland and

2. To find out the optimum and economic fertilizer dose for sunflower.

Methodology:

A field experiment was conducted at coastal charland of OFRD, BARI, Noakhali (AEZ-18);MLT site, Amtoli, Barguna (AEZ-13) and ARS, Benarpota, Satkhira (AEZ-13) during Rabi season of 2018-19 to evaluate the effect of integrated nutrient management for better yield of sunflower. Before conducting the experiment, initial composite soil samples (0-15 cm) were collected from the experimental plots and collected samples were analyzed in the laboratory following standard methods. Moreover, nutrient status of vermicompost, compost and cowdung used in the experimental field were also analyzed. The experiment was laid out in a RCB design with three (03) replicates. The unit plot size was 4m×3m and BARI Sunflower-2 was used as the test crop. Treatments were randomly distributed within the blocks as follows: T₁= Soil test based fertilizer dose for HYG, T₂ = IPNS with 5 t ha^-1cowdung, T₃= IPNS with 5 t ha^-1 compost, T₄= IPNS with 1.5 t ha^-1 vermicompost, T₅= Farmers’ practice and T₆= Absolute control. The seeds were sown @ 10 kg ha^-1 in line with the spacing of 50 cm x 25 cm on 18 December, 20 December and 17 December, 2018 at Noakhali, Barguna and Satkhira, respectively. Different intercultural operations and plant protection measures were taken as and when necessary to raise healthy crops. The crop was harvested on 28 March, 31 March and 25 March, 2019 at Noakhali, Barguna and Satkhira, respectively. Soil salinity level was measured by using Electrical Conductivity meter Adwa (AD 310) at different growth stages of the crop. Data were collected on an individual plant basis from ten (10) randomly selected plants of each plot in such a way that the border effect was avoided for high precision. Data on yield and yield contributing parameters were recorded and statistically analyzed with the help of statistical package statistix 10 (Analytical Software. Tallahassee, Fla, USA) and mean separation was tested by Duncan’s Multiple Range Test (DMRT) (Steel and Torrie, 1960). Soil pH was measured by a combined glass calomel electrode (Jackson, 1958). Organic carbon was determined by wet oxidation method (Walkley and Black, 1934). Total N was determined by modified Kjeldahl method. Ca and Mg were determined by NH₄OAc extraction method. K, Cu, Fe, Mn and Zn were determined by DTPA extraction followed by AAS reading. Boron was determined by CaCl₂ extraction method. Phosphorus was determined by Bray and Kurtz method (Acid soils) and Modified Olsen method (Neutral + Calcareous soils). S was determined by CaH₄ (PO₄)₂. H₂O extraction followed by turbidimetric method with BaCl_2.

Source of Information: Bangladesh Agron. J. 2019, 22(2): 151-159

Article Link (Online Journal): DOI: https://doi.org/10.3329/baj.v22i2.47643

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on the results, it may be concluded that IPNS with 1.5 t ha^-1vermicompost is superior to the other fertilizer management packages in respect of yield as well as economic return for sunflower cultivation in the coastal char land of Bangladesh.

Knowledge Management: Journal