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Nitrogen Fertilization on Growth and Yield Response of Oat (avena Sativa L.)

M.M. Islam
Agrotechnology Discipline, Khulna University, Khulna-9208, Bangladesh

A.A. Mamun
Agrotechnology Discipline, Khulna University, Khulna-9208, Bangladesh

S.K. Ghosh
Agrotechnology Discipline, Khulna University, Khulna-9208, Bangladesh

D. Mondal
Agrotechnology Discipline, Khulna University, Khulna-9208, Bangladesh

Abstract/ Executive Summary:

Nitrogen is one of the main inputs of oat cultivation and its efficient management is basic for harvesting the maximum potentiality of the crop. An investigation was conducted at the field laboratory of Agrotechnology Discipline, Khulna University, Bangladesh to find out the effect of nitrogen fertilizer on growth, yield, and yield contributing characters of oat during 2017-2018. The experiment was designed in the randomized complete block with seven N rates (0, 30, 45, 60, 75, 90, and 105 kg ha^-1) in the triplicate run. The application of N nitrogen significantly increased the growth and yield of oat. The results showed that 105 kg ha^-1 N was supreme in all growth parameters and straw yield but 90 kg ha^-1 N was better for main yield parameters and grain yield. The maximum plant height (101.27 cm), leaf number (11.90), tillers plant^-1 (9.93), plant density (41.33 m^-2), and straw yield (4.70 t ha^-1) were recorded with 105 kg ha^-1 N application, whereas the highest grain yield (1.76 t ha^-1) was found with 90 kg ha^-1 N. From the results of the present research, it may be concluded that application of 90 kg N ha^-1 could be used for oat production in soils of AEZ 13, Bangladesh.

Keywords: Oat, N fertilization, Growth, Productivity

Location: Agrotechnology Discipline, Khulna University, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Crop-Soil-Water Management

Commodity: Nitrogen, Oat

Objectives:

To find out the response of yield and yield components of oat to different doses of N fertilizer.

Methodology:

Site and soil description: The study to investigate the effect of varying doses of nitrogenous fertilizer on the growth and yield of oat was executed at the Professor Dr. Purnendu Gain Field Laboratory of Agrotechnology Discipline, Khulna University, Khulna during the Rabi season of 2017-18. The area was located in the agro-ecological zone of the Ganges Tidal Floodplain (AEZ 13). The experimental site was situated by latitude 22°79′88″ E, longitude 89°53′44″ N and elevation of 18 m above mean sea level with a sub-tropical climate. Before sowing the crop, the soil of the experimental field was analyzed in the laboratory for its Physico-chemical properties. The soil was well-drained, non-saline, and non-sodic clay loam type with pH 6.8, total N 0.060%, available P₂O₅ 38.0 kg ha^-1, and available K₂O 265.0 kg ha^-1. Treatments and experimental design: The experiment was arranged in a randomized complete block design (RCBD) with seven treatments (Table 1) each replicated thrice. A net plot size of 3.0 m ´ 2.0 m was maintained for each treatment. A distance of block to block 0.5 m and that of a plot to plot 0.25 m was maintained. The recommended dose of fertilizers, except N, was applied. Crop husbandry: Seeds of an Indian oat cultivar Kent, collected from Central Cattle Breeding and Dairy Farm (CCBDF), Dhaka, were used as the planting material in this experiment. Seeds were treated with Vitavax-200 at the rate of 3 g kg^-1 seed for 24 hours, were sown along the open furrow spaced 25 cm apart at 4-5 cm depth at a seed rate of 60 kg ha^-1. The full dose of organic manure (cow dung) was added three weeks before sowing. Recommended full quantity of phosphorus and potash and half dose of nitrogen as per treatment details were applied during final land preparation and thoroughly mixed in the soil. The remaining half dose of nitrogen was top-dressed after 30 days of seed sowing. The other intercultural operations were kept normal and uniform for all the treatment plots. Ten plants from each plot were selected randomly and data on plant height, leaves plant^-1, tiller plant^-1, and numbers of filled and unfilled grains spike^-1 were recorded. Plant height was measured from the soil level to the highest leaf tip with the help of a meter tape. Three rows from each plot were randomly selected and then numbers of plants were counted from a one-meter length of each row. Ten randomly selected plants from each plot of each replication were taken into account and numbers of tillers plant^-1 were counted and their averages were worked out. All the plants of each plot of each replication were harvested and tied into bundles. After threshing and cleaning by winnowing, grain yield and total stover plot^-1 were measured separately with electric balance and digital scale balance, respectively. The yield was converted on a hectare basis intones. Grain yield was calculated based on a cleaned sample with a moisture level adjusted to 14%. Data analysis: The data were analyzed for Analysis of Variance (ANOVA) at an error rate of 5% to determine the impact of each treatment by using the computer package program STAR (Statistical Tools for Agricultural Research). Construction of graphs, calculation of means, and standard errors was carried out by using Microsoft Office Excel 2012 program. The differences among the treatment means were compared by Duncan’s New Multiple Range Test (DMRT) at a 95% confidence level. Functional relationships were developed between yield attributes and yield, and between treatments and yield by using simple regression analysis.

Source of Information: Bangladesh Agron. J. 2020, 23(2): 35-43

Article Link (Online Journal): DOI: https://doi.org/10.3329/baj.v23i2.52450

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Yield and yield contributing characters of oat were responsive to the increased amount of nitrogen up to 105 kg N ha^-1. However, 90 kg N ha^-1 was the best for grain yield in oat cultivation in soils of AEZ-13 region.

Knowledge Management: Journal