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Interaction Effect of Phosphorus and Boron on Yield and Quality of Lettuce

Sultana Zaman Chowdhury
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.

Muhammad Abdus Sobahan
School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh.

Abul Hasanat Md. Shamim
School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh.

Nasima Akter
Division of Agronomy, Bangladesh Rice Research Institute, Gazipur, Bangladesh.

Mohammad Mofazzal Hossain
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.

Abstract/ Executive Summary:

Proper nutrition is essential for satisfactory crop growth and production. A field experiment was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University, to evaluate yield and quality of Grand Rapids lettuce using various levels of phosphorus and boron. Treatment combination of 120 kg ha^-1 of phosphorus and 2 kg ha^-1 of boron has significantly increased plant height, leaf number, leaf length, plant canopy, capsules plant^-1, seeds capsule^-1, seeds number plant^-1, seed yield ha^-1, germination (%), planting value (%), moisture (%), purity (%), dry matter (%) and 1000 seed weight. Most of the treatment combinations performed better than control treatments in all parameter. The finding could be helpful to determine the precise levels of phosphorus and boron to improve the yield and quality of lettuce.

Keywords: Boron, Lettuce, Phosphorus, Quality, Yield

Location: The experiment was conducted at Horticulture Research Farm as well as in the Horticulture Laboratory and Seed Technology Laboratory of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU)

Start Date: 00-12-2009

End Date: 00-04-2010

Program Area: Crop-Soil-Water Management

Commodity: Lettuce

Objectives:

To see the interaction effect of P and B on the yield and quality of lettuce.

Methodology:

The experiment was laid out in randomized complete block design with three replications. The treatments were randomly allotted in each block. The treatments comprised four levels of P (0, 40, 80 and 120 kg ha^-1) supplied as triple super phosphate and five levels of boron (0, 0.5, 1, 1.5 and 2kg ha^-1) supplied as boric acid in combination made 20 treatments. Ten tones cow dung per hectare, 250Kg ha^-1 of urea, 200Kg ha^-1 of MOP fertilizers were used as a basal dose. In each plot there were four rows accommodating five plants per row. Block to block and plot to plot distance were 1 m and 0.5 m, respectively. The dimension of the unit plot was 1.2 m × 2 m = 2.4 m². The row to row and plant to plant spacing were 40 cm and 25 cm, respectively. Lettuce (Lactuca sativa L., cv. Grand Rapids) was chosen as the plant material. Lettuce seeds were soaked in water for 48 hours and then the seeds were mixed with soilless mixture (1/4 perlite + 1/2 fine grade horticultural vermiculite + 1/4 peat moss) and sown in lines seedbed. Complete germination of seeds took place within 8 days of sowing. Twenty two days old seedlings were transplanted to the plot. Transplantation was done in the afternoon followed by a light irrigation around each seedling for better survival. Irrigation was given at an interval of 15 days depending on the soil and moisture condition. Four weeding were done at 10 days interval after transplanting. Staking was done in each plot using bamboo sticks to keep the plant and flower stock erect and to protect them from the damage caused by storm and high winds. The seeds were harvested by cutting off the stalk when about 15-20% of the heads had black seeds at exposed condition. Seeds were separated by hand from the capsule after sufficiently drying. The dried seeds were sealed treatment wise in the polythene bags. All bag containing seeds were stored in refrigerator in the laboratory for evaluation of quality. Data on plant height, leaf number, leaf length and plant canopy were recorded from five randomly selected plants at 45 days after transplanting (DAT). Data on number of capsules per plant, seeds in capsule, number of seeds per plant and seed yield ha-1 were also calculated from five randomly selected plants. Seed Germination Percentage (SGP), Moisture content (%), Dry matter (%), Analytical purity (%), Planting value (%), 1000 seed weight was estimated by different standard methods. Collected data were subjected to analysis by MSTAT and the differences among treatment means were compared by Duncan’s Multiple Range Test (DMRT).

Source of Information: Azarian Journal of Agriculture, ISSN:2383-4420, AJA. VOL (2) ISSUE 6, 2015: 147-154.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Phosphorus and boron played an important role in increasing vegetative growth, yield and quality of lettuce seed. The fertilizer treatment combination of 120kg ha-1 of P and 2kg ha-1 of B was observed to be a suitable dose for better growth, yield and quality of lettuce in shallow red brown terrace soil of Madhupur Tract.

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