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

Effect of Seed Rate, Nitrogen Fertilization and Time of Harvest on the Seed Yield of Wheat

Masood Ahmed
Department of Agronomy, Bangladesh Agricultural University, Mymensingh

S.M. Altaf Hossain
Department of Agronomy, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

An experiment consisting of five main plot treatments of seed rates (100, 110, 120. 130 and 140 kg/ha), three sub-plot treatments of N levels (45, 90 and 135 kg N/ha) and three sub-sub-plot treatments of harvesting time (4, 6 and 8 weeks after anthesis) was conducted at the Department of Agronomy, Bangladesh Agricultural University, Mymensingh during 1983- 84, 1984-85 and 1985-86. There existed a direct relationship between seed rate and seed yield in all 3 experiments. The rate of increase of seed yield due to difference in seed rate varied from year to year and was the highest (17 %) during 1984-85 obtained by using a seed rate of 130 to 140 kg/ha. An inverse relationship existed between seed rate and germination capacity of the seeds. The results from the three experiments showed that a seed rate between 120 to 130 kg/ha gave higher seed yield, while a seed rate of 100 kg/ha produced seeds with higher germination ability. Application of N @ 135 kg/ha produced the highest seed yield between (2.2 and 2.6 t/ha) depending on the year of experimentation and had a germination rate of 96.5 % after 7 months of storage. Lower N rates reduced seed yield, the reduction being between 32 and 38 % at 45 kg N/ha. Time of harvest had a direct effect on seed yield and harvest index. When harvested 8 weeks after anthesis. seed yield was the highest and this was 17 to 36% higher compared to that harvested 4 weeks after anthesis.

Keywords: Seed rate, Nitrogen fertlization, Time of harvest, Yield, Wheat

Location: Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-1983

End Date: 00-00-1985

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To identify suitable time of harvest at which higher seed yield of good quality could he achieved.

Methodology:

The experiment was conducted at the Agronomy field laboratory of Bangladesh Agricultural University, Mymensingh for three growing seasons. A split-split-plot design with four replication was used in the experiment. Five main plot treatments of seed rates such as 100, 110, 120, 130 and 140 kg/ha, three sub- plot treatments of N levels such as 45, 90 and 135 kg N /ha supplied in the form of 100, 200 and 300 kg urea/ha, and three sub-sub-plot treatments of harvest times such as harvesting 4, 6 and 8 weeks after anthesis were used in the experiment. Seeds of Sonalika wheat was sown at a standard row width of 20 cm and a depth of around 2-3 cm on November 13, 1983, November 25, 1984 and November 28, 1985. A basal dressing of the half of urea, and triple supper phosphate and muriate of potash @ 75 and 50 kg/ha, respectively were incorporated before sowing in all the experiments. The rest half of urea was top-dressed before irrigation at crown-root initiation stage i.e. third week after seeding (December 6, 1983, December 21. 1984 and December 19, 1985, respectively). Three plant counts were made per plot from an area of O. I m^-2at the end of second week after sowing in all the experiments. Each time their mean was taken to estimate plant establishment. The experiments were harvested as per treatments and final yield was recorded. The experiments were harvested as per treatments and final yield was recorded. The harvested seeds were stored treatments and final yield was recurred. The harvested seeds were stored treatment-wise in tin containers until the next planting season. The germination tests, before and after storage, were conducted from the seed samples of each of the treatments. Before harvesting 10 sample plants were randomly selected and uprooted from each experimental plot for observation. The collected data were analyzed statistically and significance of mean difference were adjudged by Duncan's New Multiple Range Test ( Steel and Torrie , 1960).

Source of Information: Bangladesh Agron.J. 4(1 & 2):1992, 35-43, ISSN 1013-1922

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

A seed rate between 120 to 130 kg/ha gave higher seed yield, while a seed rate of 100 kg/ha produced seeds with higher germination ability. Application of N @ 135 kg/ha produced the highest seed yield between (2.2 and 2.6 t/ha) depending on the year of experimentation and had a germination rate of 96.5 % after 7 months of storage. Lower N rates reduced seed yield, the reduction being between 32 and 38 % at 45 kg N/ha. Time of harvest had a direct effect on seed yield and harvest index. When harvested 8 weeks after anthesis. seed yield was the highest and this was 17 to 36% higher compared to that harvested 4 weeks after anthesis.

Knowledge Management: Journal