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

Growth and Yield Difference Due to Application of Various Levels of Gibberelic Acid in Local and BARI Falon-1

AJMN Nabi
Accelareting Agricultural Productivity Improvement, International Fertilizer Development Center

MHK Hawlader
Department of Agricultural Botany, Patuakhali Science and Technology University, Dumki, Patuakhali-8602

MM Hasan
Department of Agricultural Botany, Patuakhali Science and Technology University, Dumki, Patuakhali-8602

MZ Haque
Department of Agricultural Botany, Patuakhali Science and Technology University, Dumki, Patuakhali-8602

ML Rahaman
Office of the controller of examinations, Patuakhali Science and Technology University, Dumki, Patuakhali-8602

Abstract/ Executive Summary:

An experiment was carried out at the research farm of Patuakhali Science and Technology University (PSTU) during the period from November 2010 to April 2011 to study on growth and yield performance of cowpea (BARI Falon-1 and local Falon) with different concentration of GA₃ (control, 25.00, 33.33, 50.00 and 100.00 ppm) to find out the suitable variety and optimum level of gibberelic acid (GA₃) application which would be also suitable to cultivate under coastal region of Patuakhali. Among the treatments, GA₃ at 33.33 ppm treated plant of BARI Falon1 showed the better performance on growth and yield contributing characters. As a result, the tallest plant (62.53 cm), number of leaves and branches plant¹ (28.67 and 20.07, respectively), TDM (83.99 g), CGR (1.68 cm² day^-1), RGR (0.729 cm²day^-1) and NAR (1.275 cm² day^-1) were exhibited from the variety BARI Falon-1 with the spraying of GA₃ at 33.33 ppm at harvest. Yield contributing characters had also higher such as pods plant¹ (11.67), length of pod (17.20 cm), seeds pod¹ (16.80), 100-seed weight (12.49 g), seed yield (20.16 g plant^-1 and 3139.93 kg ha^-1) and harvest index (24.04%) with the variety BARI Falon1 whily it was treated by 33.33 ppm GA₃. Hence, it can be concluded that the application of GA₃ up to 33.33 ppm than other GA₃ levels and BARI Falon-1 than Local Falon would be the most suitable for obtaining the greater yield of cowpea under the coastal area of Patuakhali region. So, considering the above observation, BARI Falon-1 therefore is suggested to cultivate in Patuakhali region while 33.33 ppm GA₃ would be also optimum level for the better production of cowpea.

Keywords: Growth, Yield difference, Gibberelic acid, Falon

Location: Patuakhali Science and Technology University (PSTU), Patuakhali

Start Date: 00-11-2010

End Date: 00-04-2011

Program Area: Crop-Soil-Water Management

Commodity: Cowpea, Hormone

Objectives:

To evaluate the effect of various concentrations of GA₃ on growth and yield of Cowpea and to find out the most appropriate doses of GA₃.

Methodology:

A field experiment was conducted at the research farm of Patuakhali Science and Technology University (PSTU), Patuakhali during the period from November 2010 to April 2011. Geographically, the research farm is located at 22⁰37´ N latitude and 89⁰10´ E longitudes. The area is named as Gangetic Tidal Floodplains and falls under Agroecological Zone “AEZ- 13”. The area lies at 1.5 meter above mean sea level. The soil of the experimental field was silty caly loam having pH value of 7.00. The OM content found 1.53% in most cases. Deficiency of nitrogen is acute and widespread. Status of exchangeable potasium is almost satisfactory. Phosphorus, sulphur and other characterstics of soil status are also optimum for its cultivation. Climatic conditions are also favourable for its cultivation. Two varieties of cowpea such as BARI Falon–1 and Local Falon as planting materials and five different levels of Gibberelic Acid (GA₃) including control (without GA₃) as treatment viz. T₀ = Control (without GA₃), T₁ = 25 ppm, T₂ = 33.33 ppm (recommended dose by Yon Longping high-tech. Agriculture Company Ltd.), T₃ = 50 ppm and T₄ = 100 ppm were used for the present study. A 100 ppm solution of GA₃ was prepared by dissolving 100 mg of GA₃ in 1 L of distilled water. The distilled water was added to make the volume 1 liter to get 100 ppm solution which was used as treatment T₄. Similarly another volume (T₁, T₂ and T₃) of GA₃ was prepared. Two factors experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The size of each unit plot was 2.0 m × 2.0 m where line to line and seed to seed distances were 30 and 15 cm, respectively, in each plot. The land of the experimental site was first opened on December 20, 2010 with a tractor and then the land was ploughed and cross-ploughed to obtain good tilth. All the weeds and stubbles were removed from the experimental field. The soil was treated with insecticides at the time of final ploughing. Insecticides Furadan 5G was used @ 8 kg ha^-1 to protect young plants from the invasion of mole cricket, ants, and cutworms. Fertilizers such as urea @ 8 kg, TSP @ 6 g and MoP 20 g were applied for each plot during final plot preparation. The seeds of Falon (cowpea) were sown in the research field on January 3, 2011. The distances between row to row and seed to seeds were 40 and 15 cm, respectively. Matured and viable 2 seeds were placed in each hole at 2-3 cm depth from the soil surface. Thinning out, gap filling, weeding, irrigation and disease and pest management operation were also done as intercultural operation for maximizing the yield. Continuous monitoring of growing seedlings and GA₃ spraying was also done as per treatment. The first crop sampling was done on 30 days after sowing (DAS) and it was continued up to physiological maturity on 90 DAS at an interval of 30 days. Harvesting of the cowpea was done after 110 days of sowing. Data were collected when the foliage turned pale yellow. Data were recorded for 5 individual plants per plots in each replication. Yield data were also collected after harvest. The plants were separated into leaf, stem and roots and then their dry weight were recorded after drying them in an oven at 80±2^°C for 72 hours. The data obtained from the experiment on various parameters were statistically analyzed by MSTAT-C computer program and the mean were adjusted by DMRT where at 5 % levels of probability.

Source of Information: Progressive Agriculture 27 (2): 94-100, 2016

Article Link (Online Journal): DOI: https://doi.org/10.3329/pa.v27i2.29317

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In view of the above results (all morphological parameters, yield and yield contributing parameters) and discussion, it was concluded that BARI Falon-1 than Local Falon and foliar spray of GA₃ at 33.33 ppm than other levels showed better response on growth and yield attributing characters. Considering the overall performance, it could be also suggested that the variety BARI Falon–1 is more suitable than Local Falon and 33.33 ppm GA₃ than other levels to cultivate in coastal areas of Patuakhali region for getting the higher yield of cowpea.

Knowledge Management: Journal