Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Long Term Manuring and Fertilization Effect on Soil Properties in Terrace Soil

Firoz Ahmed
Field Service Wing, DAE, Khamarbari, Dhaka-1215, Bangladesh.

Majharul Islam
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

Md. Mahfujur Rahman
Cotton Development Board, Head Quarter, Khamarbari, Dhaka-1215, Bangladesh.

Md. Saikat Hossain Bhuiyan
Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh-2202, Bangladesh.

M. A. Kader
Soil Science Division, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

The study was carried out on the influence of long-term manuring and fertilization on soil properties. Soil samples were collected in 2016 from a highly weathered terrace soil with rice-wheat cropping pattern at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) experimental farm having five OM (control, cow dung, green manure, rice straw, and compost) treatments combined with three mineral N fertilizer (control, 155 kg ha^-1, 220 kg ha^-1) levels. Long-term (28 years) application of mineral fertilizers and manure resulted in significant differences in soil organic carbon, total N content, C:N ratio of soil, and soil pH_KCl between the treatments. The soil organic carbon content varied among the different treatments from 6.11 g OC kg^-1 (application of rice straw and no N) to 9.43 g OC kg^-1 (application of compost and 220 kg N ha^-1 yr^-1). The total soil N content varied among the different treatments from 0.41 g N kg^-1 (application of rice straw and no N) to 0.73 g N kg^-1 (application of compost and 220 kg N ha^-1 yr^-1). The C:N ratios of the soil varied among the different treatments from 13.3 (application of no exogenous OM and no N) to 15.1(application of green manure and no N). The soil pH varied among the different treatments from 4.42 (application of cow dung and 220 kg N ha^-1 yr^-) to 4.89 (application of compost/cow dung and no N). So, long-term fertilization and manuring undoubtedly bring some changes in the physiochemical soil properties of terrace soil.

Keywords: Long-term fertilization; Soil properties; Terrace soil.

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur district.

Start Date: 00-00-2016

End Date: 00-00-2016

Program Area: Crop-Soil-Water Management

Commodity: Terrace soil, Fertilizer and manures

Objectives:

To the effect of long-term fertilization and manuring on soil properties.

Methodology:

This experiment was established in 1989. The site of the experiment was the Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) farm located in salna, Gazipur district, 40 km north of Dhaka, and situated in the center of the Madhupur Tract(24°05´ N, 90°16´ E), at 8.4m above MSL. The experiment was laid out in a 5 x 3 factorial design with two replications. Five treatments of organic residues and three levels of nitrogen were arranged randomly in each replication. All treatments followed a yearly wheat-fallow-rice cropping pattern and involved 5 OM application treatments (1° no- application (M0), 2° cowdung at 25 Mg ha^-1 as fresh manure (CD), 3° compost at 25 Mg ha^-1 made from cowdung and rice straw (CP), 4° green manure at 7.5 Mg ha^-1 fresh biomass of Sesbania Rostrata (GM), and 5° rice straw at 2 Mg ha^-1(ML). These were combined with 3 levels of inorganic N fertilizer dressing (0, 75, and 100 kg N ha^-1 for rice and 0 (N0), 80 (N1), and 120 (N2) kg N ha^-1 for wheat). Organic residues were applied to the soil once (June) a year 20-25 days before rice transplanting. Organic residues and amendments were incorporated by a power tiller to a maximum depth of 10 cm. Every year a high-yielding variety of T. Aman 'BR 14' was transplanted in July and harvested in October. 'Akbar', a high-yielding variety of wheat, was sown between mid-November and December and harvested in March. Surface soil samples (0- 15 cm) were collected in 2016 from each replicated plot. The field moist soil was gently broken apart by hand and was air-dried and ground to pass a 2-mm sieve prior to soil incubations and determination of soil properties. The total carbon and nitrogen content of soil samples were analyzed with a Variomax CNS- analyzer (Elementar Analysesysteme, Germany). Sub-samples of 0.8 g were used for analysis. The CNS analyzer works according to the principle of catalytic tube combustion under excess oxygen supply and high temperatures (850°C to 1150°C). The combustion gases are transported by He as a carrier gas and the oxygen dozing amount is adjusted via a dozing parameter selected for the sample. As a general rule, each 350 mg organic substance with a medium carbon content requires approximately 0.30-0.35 L O₂ for combustion. In the CNS analyzer, the organic matter in the samples is converted to NO_x, CO₂, H₂O, and SO₂. Each gas is adsorbed by means of specific traps and then subsequently released by thermal desorption and measured quantitatively with a Thermo conductivity detector (TCD). The pH (KCl) was determined for all soils. To determine the pH, 10 g of air-dried and sieved (<2 mm) soil was weighed in a 50 ml glass vase, 25 ml KCl 1 M was added and the suspension was well-mixed with the aid of a glass bar. After waiting for 10 min, the suspension was mixed again. Afterward, pH-KCl was measured with a pH-electrode. Non-linear least-squares regression analysis was used to calculate parameters from cumulative C mineralization data in SPSS. Two-way ANOVA (with mineral N levels and OM application treatments as fixed factors) with Duncan’s multiple range posthoc test was used for statistical analysis of the BSMRAU experiment. All statistical analyses were carried out with SPSS 15.

Source of Information: Asian Research Journal of Agriculture - 13(2): 44-52, 2020

Article Link (Online Journal): DOI: 10.9734/ARJA/2020/v13i230101

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Long-term (28years) application of mineral fertilizers and manure to the BSMRAU terrace soil resulted in significant differences in soil organic carbon, total N content, C: N ratio of soil, and soil pH_KCl between the treatments. Organic carbon content was only significantly different between the rice straw and cow dung application treatments. N content was only significantly different between the rice straw, cowdung, and green manure application treatments. C: N ratios of rice straw and green manure applied soils were significantly higher than the compost, cowdung and control soil. The variation in organic carbon and total N accumulation with the C:N ratio of soils in different OM treated plots could have resulted from the variation in the quality of the applied exogenous OM. The pH of the soil was not significantly influenced by the application of different exogenous organic matter treatments instead of remarkable differences between the treatments. The highest soil pH was observed with the application of compost followed by rice straw, cowdung, control, and green manure. Irrespective of the OM application, the addition of N fertilizer (155 and 220 kg N ha^-1) resulted in a significant accumulation of SOC and total N and a decline in soil C:N ratios and soil pH compared to the control. Soil organic carbon and total N increase while the C:N ratio and soil pH decrease with the increase of N-fertilizer application. The reduction of soil pH in N fertilizer treatments was mainly attributed due to the release of hydrogen (H+) during the nitrification of NH4+ that comes from ammonical fertilizer to nitrate (NO3-). The result indicates that long-term fertilization and manuring undoubtedly bring some changes in SOC and total N; C:N ratios and soil pH as physiochemical soil properties of terrace soil.

Knowledge Management: Journal