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Effect of Organic Manures on Vegetable Crop Production and Carbon Accumulation in Soil (2016-17)

M. R. KHATUN
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. A. HAQUE
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

M. M. MASUD
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

R. A. BEGUM
Soil Science Division, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

A field experiment on effect of organic manure on Broccoli was conducted in the Grey Terrace Soil (AEZ 28) of Gazipur during the year of 2016-2017 with the objectives to enhance soil productivity through the use of integrated plant nutrition system (IPNS) of mineral fertilizers and organic sources of plant nutrients, improve the efficiency of plant nutrients thus limiting losses to the environment and to increase sustainable crop yield. There were six treatments viz. T₁: Native nutrient, T₂: 75% STB, T₃: 100% STB, T₄: 5 t ha^-1CD + IPNS, T₅: 3 t ha^-1 PM + IPNS, T₆: 3 t ha^-1 VC + IPNS. IPNS means releasing amount of nutrient of cowdung, poultry manure and vermicompost were subtracted from STB chemical fertilizers. The experiment was laid out in RCB design with four replications. Data revealed that the T₄ treatment produced the highest yield of broccoli 19.89 t ha^-1. This trend of influence was consistent for almost all the yield contributing characters of broccoli. The native nutrient treatment produced the lowest yield (10.41 t).

Keywords: Soil health, Organic fertilizer, IPNS, Broccoli, Environmental pollution

Location: Soil Sc. Division Lab., Gazipur

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Crop-Soil-Water Management

Commodity: Organic fertilizer, Broccoli

Objectives:

To improve the stock of organic carbon in the soil
To increase crop yield through integrated plant nutrition system (IPNS)
To improve the use efficiency of inputs like fertilizers and water thus helps maintain or restore the capacity of soil organic carbon

Methodology:

A field experiment on effect of organic manure on Broccoli was conducted in the Grey Terrace Soil (AEZ 28) of Gazipur during the year of 2016-2017. The initial soil samples collected from the depth of 0-15 cm were analyzed in the laboratory following standard methods. Initial values of some important chemical parameters of the experimental soil were recorded. From initial soil test results, the rate of different nutrients were calculated and documented. Chemical analysis of cowdung, poultry manure and vermicompost were done. The experiment was laid out in a randomized complete block design with four replications. Six different treatments viz. T₁: Native Nutrient, T₂: 75% STB from chemical fertilizers, T₃: 100% STB chemical fertilizer, T₄: 5 t ha^-1 CD + IPNS, T₅: 3 t ha^-1 PM + IPNS, T₆: 5 t ha^-1 VC + IPNS. IPNS means releasing amount of nutrients of cowdung, poultry manure and vermicompost were subtracted from STB basis chemical fertilizers. The unit plot size was 3m x 4m. The tested crop was broccoli and the hybrid variety of broccoli was Green Magic. Thirty one days seedlings of broccoli was transplanted in line with 50 cm row to row and 50 cm seedlings spacing in 28 November 2016 at Gazipur. Fertilizer N-P-K-S-Zn-B were supplied from urea, TSP, MP, Gypsum, Zinc sulphate, monohydrate and Boric acid respectively. All PKSZnB and ¹/₃ of N were applied at the time of final land preparation. The remaining two third of N were applied as top dress at 30 and 60 days after sowing. Three irrigation and other intercultural operations were done as and when required. The broccoli was harvested on 24 January 2017 at Gazipur. Data on yield and yield contributing characters were recorded and analyzed statistically using MSTATC. DMRT test was used to determine the significant differences between treatments. Plant samples and post harvest soil samples were collected from each plot for chemical analysis.

Source of Information: Annual Report 2016-2017, BARI, Gazipur, Banladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The experiment started in the year of 2016-2017. Broccoli is the first vegetable crop of the experiment. Soil Test Basis (STB) IPNS treatment through cowdung produced higher yields in the experiment. For improving the stock of organic carbon in the soil, further study is needed.

Knowledge Management: Report/Proceedings