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Effect of Nitrogen and Phosphorus on Growth and Seed Yield of French Bean

S. S. Kakon
Senior Scientific Officer
Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701

M. S. U. Bhuiya
Professor
Bangladesh Agricultural University (BAU), Mymensingh-2200

S. M. A. Hossain
Professor
Bangladesh Agricultural University (BAU), Mymensingh-2200

Q. Naher
Senior Scientific Officer
On farm Research Division, Bangladesh Agricultural Research Institute (BARI), Gazipur-1701

Md. D. H. Bhuiyan
District Monitoring Officer
Narsingdi, Bangladesh

Abstract/ Executive Summary:

Field experiments were conducted during rabi (winter) seasons of 2010-11 and 2011-12 at the Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur to study the effects of nitrogen and phosphorus on growth, dry matter production and yield of French bean. A randomized complete block design was followed with 10 combinations of N (0,50, 100, 150 and 200) and P (0,22, 33, 44 and 55) kg ha^-1 along with a blanket dose of control. All the treatments showed the maximum leaf area index (LAI) at 65 days after sowing (DAS). All the treatments showed the maximum total dry matter production, crop growth rate and net assimilation rate at harvest and at 55-65 DAS, respectively in both the years. LAI, dry matter production, CGR, NAR and seed yield significantly increased with the increase in nitrogen and phosphorus level up to 150 kg N and 44 P kg ha^-1 , respectively. Similar trend was followed in maximum number of pods (9.45) and seed yield (1563.33 kg ha^-1). The treatment comprises with 150 kg N and 44 P Kg ha^-1 gave the highest seed yield which was 51.40 and 54.30 % higher than control plots.

Keywords: French bean, Growth, Dry matter production, Nitrogen, Phosphorus, Seed yield

Location: Agronomy research field of Bangladesh Agricultural Research Institute (BARI), Joydebpur under Gazipur district of Bangladesh

Start Date: 00-00-2010

End Date: 00-00-2012

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer, French bean

Objectives:

To find out the optimum level of nitrogen and phosphorus fertilizer for exploiting the yield potential of French bean.

Methodology:

The experiment was conducted on Agronomy research field of Bangladesh Agricultural Research Institute (BARI), Joydebpur under Gazipur district of Bangladesh during the period from November to March in 2010-11 and 2011-12. The experiment site was located Chhiata Series under Agro-Ecological Zone-28 (AEZ-28) latitude 23⁰59/ N and longitude 90⁰24/ E. The rainfall during the experimental period was 42.0 mm in first year and 189 mm in second year, respectively. Before opening the land, the soil samples were taken from the spots of the experimental area and analyzed from the Soil Science Division, BARI. The soil analysis showed that the soil of the experimental field was loam in texture and low in organic matter (1.27 %). The soil was acidic in nature with pH (6.1) and contained very low amount of total nitrogen (0.067%), phosphorus (9.6 %), sulphur (12 %), zinc (2 meq/100 g) and medium amount of potassium (0.18 meq/100 g). The experiment was laid out in a randomized complete block design (RCBD) with three replications. There were ten treatment combinations such as N0P0, N0 P44, N50 P44, N100 P44, N150 P44 , N200 P44, N150P0, N150P22, N150P33 and N150P55. The sources of N was urea and that of P was triple super phosphate. Each plot was uniformly fertilized with @ 60-20-2 K-S-Zn through muriate of potash, gypsum and zinc sulphate and the total amount of TSP and 50% of urea were mixed with the soil during final land preparation and the rest urea was top dressed at 35 days after sowing (DAS). The seeds of French bean var. BARI Jharsheem-1 were sown in the field on 25 November, 2010 and 24 November, 2011. Seeds were treated with vitavax and sown continuously in 30 cm apart rows and plant to plant distance 15 cm. Weeding was done with hand at 25 and 40 DAS. For uniform germination, a light irrigation was given by sprinkler method after sowing of seeds. Three irrigations were given at 25, 40 and 60 DAS. The crops were attacked by cutworm (Agrotis ipsilon) and hairy caterpillar (Spilarctia obliqua) at early growth (vegetative) stage. The cutworm was controlled through hand picking and hairy caterpillar by spraying Perfecthion 40EC @ 2.0 ml L^-1 of water at an interval of 7-10 days for two to three times. Five plants from each replication were randomly tagged for daily count of opened flowers. Flower counts began from the date of opening of the first flower and were continued daily until flowering ceased. Total flower production and mature pods were counted at harvest. Data on leaf area and dry matter accumulation were recorded every 15 day intervals starting from 20 to 80 DAS and dried at 70 ⁰C for 72 hours to a constant weight and dry weight was taken. Different growth parameters such as LAI, CGR NAR also measured using methods as suggested by Gardner et al. (1985). The yield component data was collected from 10 randomly selected plants prior to harvest from each plot. At harvest, the yield data was recorded, analyzed statistically and means were separated using DMRT and r value were done following the Microsoft EXCEL 2003.

Source of Information: Bangladesh J. Agril. Res. 41(4): 759-772, December 2016 ISSN 0258-7122 (Print), 2408-8293 (Online)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Two years result revealed that the application of N and P fertilizer up to 150 and 44 kg ha^-1exerted positive effects on French bean in terms of growth and seed yield in Joydebpur area.

Knowledge Management: Journal