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Effect of Calcium and Bradyrhizobium Inoculation of the Growth, Yield and Quality of Groundnut (a. Hypogaea L.)

M. Ataur Rahman
Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dinajpur-5200, Bangladesh

Abstract/ Executive Summary:

The study was aimed at determining the effect of fertilizer element calcium and Bradyrhizobium inoculation in improving the yield and quality of groundnut seed. The experiment was conducted in 1997-78 and 1998-99 in the clay loam soil. The fertilizing element calcium significantly affected all the yield attributes and quality up to 150kg/ha and then decline. There was also an increasing trend in qualitative characteristics like percentage of oil and protein content of groundnut with the increase in the level of calcium from 0-150 kg/ha. Bradyrhizobium fertilization affected the yield significantly but most of the yield attributes was not affected significantly.

Keywords: Calcium and Bradyrhizobium, Inoculation, Growth, Yield, Quality, Groundnut

Location: Hajee Mohammad Danesh Science and Technology University, Dinajpur

Start Date: 00-00-1979

End Date: 00-00-1999

Program Area: Crop-Soil-Water Management

Commodity: Ground nut

Objectives:

The objectives of the study was

To find out the effect of calcium under different level of Bradyrhizobium inoculation on the growth and yield of groundnut.
To see the effect of calcium and Bradyrhizobium inoculation on seed quality.

Methodology:

The study was conducted with the groundnut cultivar ‘Jhingabadam’ known as ACC-12. It is an erect and early bunch type spreading variety. The life cycle of the crop was about 4-5 months and grown in char lands in rabi (winter) and kharif (summer) seasons of Bangladesh. The pod usually contains three seeds and sometimes even more. The yield of the variety ranges from 1700 to 2250 kg/ha. The experimental field was a piece of well drained high land with moderately even topography. The soil type was clay loam in texture having low organic matter, moderately slow permeability and deficient in nitrogen, phosphorous, potassium and calcium in comparison with the standard nutrition status. The soil was acidic in nature with pH range between 5.9 to 6.1. The crop was grown in rabi season. Calcium oxide (contains 60 % calcium) was used for calcium fertilization and BAU-700 was used as inoculant in the study. There were 5 (five) treatments of calcium and 2 (two) treatments of inoculation. The calcium treatments were 0,50,100,150 and 200 kg/ha and the inoculation treatments were 0 and 50g/kg of seed. Design of the experiment was Randomized complete block design. The data was analyzed through a statistical computer programme MSTAT-C. The number of replication 3 and plot size was 4m x 2.5m. Plants were harvested from a 10 square meter of each unit plot. The pods were separated from plants. was cleaned, dried and weighed separately. The pod weight was recorded in kg/ha and adjusted at 12% moisture content. Five plants were taken from each plot to measure the yield attributes. Plant height was measured with meter scale of each plot from ground level to top of main shoot and mean height was expressed in cm and number of branches was recorded from each plot and mean number was expressed as per unit basis. In order to determine crude protein in seeds Kjeldahl's digestion and distillation procedure was followed to determine total nitrogen in seeds. The percentage of protein in seed was calculated by multiplying the nitrogen percentage with 6.25. Oil contents of the seed was determined by the solvent extraction method using petroleum ether by Soxhlet apparatus.

Source of Information: Bangladesh J. Sci. Ind. Res. 41(3-4), 181-188, 2006

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results indicated the seed protein content increased with the rate of calcium application.Inoculation had a positive effect on the percentage of protein content of groundnut seed and increased the protein percentage of seed in 1997-98 and 1998-99 but the effect was not significant.

Knowledge Management: Journal