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Feasibility of Replacing Chemical Fertilizer by Using Organic Fertilizer in Wheat (triticum Aestivum) Considering Dry Matter Content and Estimatimation of Different Growth Parameters

Z. Akhter
Department of Agronomy, Sher-E-Bangla Agricultural University

M. H. Imam
Election Commission Secretariat, Dhaka

M. A. Razzak
Department of Agronomy, Sher-E-Bangla Agricultural University

A. H. M. M. R. AKhter
Agronomy Division, RARS, Jamalpur

M. AKhter
SRDI, District Office, Jamalpur.

Abstract/ Executive Summary:

An experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2010 to March 2011 to study the feasibility of replacing chemical fertilizer by using organic fertilizer in wheat. The experiment comprised of 10 treatments, such as T₀: Control condition; T₁: All chemical fertilizer as recommended dose; T₂: Cowdung as recommended dose; T₃: Compost as recommended dose; T₄: ½ Cowdung + ½ Compost; T₅: Cowdung + Compost; T₆: Cowdung + ½ Chemical fertilizer; T₇: Compost + ½ Chemical fertilizer; T₈: Cowdung + Compost +½ Chemical fertilizer and T₉: ½ Cowdung + ½ Compost + ½ Chemical fertilizer. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. At 30, 50, 70, 90 and 110 (Days After Sowing) DAS, the highest dry matter content plant^{- 1} was recorded from T₁ (0.30 g, 3.87 g, 8.84 g, 19.58 g and 30.18 g), whereas the lowest weight from T₀ (0.18 g, 2.49 g, 6.50 g, 11.80 g and 18.08 g). At 30-50 DAS, the highest (Crop Growth Rate) CGR was found from T₁ (5.35 g m^-2day^-1), while the lowest CGR from T0 (3.46 g m^-2day^-1). At 50-70 DAS, the highest CGR was found from T₇ (8.34 g m^-2day^-1), while the lowest CGR from T₀ (6.70 g m^-2day^-1). At 70-90 DAS, the highest CGR was found from T₁(17.89 g m^-2day^-1), while the lowest CGR from T₀ (8.83 g m^-2day^-1). At 90-110 DAS, the highest CGR was found from T₈ (18.69 g m^-2day^-1), while the lowest CGR from T₀ (10.47 g m^-²day^-1). At 30-50 DAS, the highest RGR was found from T₃ (0.134 g g^-1 day^-1) and the lowest RGR from T₅ and T₈ (0.127 g g^-1 day^-1). At 50-70 DAS, the highest RGR was found from T₃ (0.049 g g^-1 day^-1) and the lowest RGR from T₉ (0.041 g g^-1 day^-1). At 70-90 DAS, the highest RGR was found from T₃ (0.040 g g^-1 day^-1) and the lowest RGR from T₀ (0.030 g g^-1 day^-1). At 90-110 DAS, the highest (Relative Growth Rate) RGR was found from T₃ (0.026 g g^-1 day^-1) and the lowest RGR from T₀ (0.021 g g^-1 day^-1). The longest spike (19.86 cm), highest grain yield (3.71 t ha^-1) and highest straw yield (5.78 t ha^-1) was attained from T₁ and the shortest spike (14.33 cm), lowest grain yield (2.06 t ha^-1) and lowest straw yield (4.49 t ha^-1) from T₀.

Keywords: Wheat, Chemical fertilizer, Organic fertilizer, Dry matter and growth parameter

Location: The experimental field of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-10-2010

End Date: 00-03-2011

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

1. To study feasibility of replacing chemical fertilizer by using organic fertilizer in wheat (triticum aestivum) considering dry matter content, and estimation of different growth parameters.

Methodology:

The experiment was conducted to study the feasibility of replacing chemical fertilizer by using organic fertilizer in wheat during the period from October 2010 to March 2011. The experiment comprised the 10 treatments i.e., T₀: Control (without manure and fertilizer); T₁: All chemical fertilizers as recommended dose; T₂: Cowdung as recommended dose; T₃: Compost as recommended dose; T₄: ½ Cowdung + ½ Compost; T₅: Cowdung + Compost; T₆: Cowdung + ½ Chemical fertilizer; T₇: Compost + ½ Chemical fertilizer; T₈: Cowdung + Compost +½ Chemical fertilizer and T₉: ½ Cowdung + ½ Compost + ½ Chemical fertilizer. Recommended dose of chemical fertilizer, cowdung and compost for this experiment were Urea: 220 kg ha^-1, TSP: 180 kg ha^-1, MP: 50kg ha^-1, Gypsum: 120 kg ha^-1, Zinc oxide: 5 kg ha^-1, Boric acid: 6 kg ha^-1, Cowdung: 8 ton ha^-1 and compost: 8 ton ha^-1. CGR and RGR were calculated. The data obtained for different characters were statistically analyzed to observe the significant difference among the treatment. The mean values of all the characters were calculated and analyses of variance were performed. The significance of the difference among the treatment means was estimated by the Duncan Multiple Range Test (DMRT) at 5% level of probability.

Source of Information: J. Environ. Sci. & Natural Resources, 6(1) : 07 - 10, 2013; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Application of all chemical fertilizer in recommended doses gave the highest dry matter accumulation followed by the combination of cowdung, compost and chemical fertilizers half in recommended doses.

Knowledge Management: Journal