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The Yield Response of Brinjal to Nitrgen and Phosphorus Fertilizers

S. Razia
Division of Soil Science, Bangladesh Agricultural Research Institute, Joydebpur, Dhaka.

M. S. Islam
Division of Soil Science, Bangladesh Agricultural Research Institute, Joydebpur, Dhaka.

Abstract/ Executive Summary:

A fertilizer trial on brinjal (Var. Singnath) conducted during the rabi season of 1978-79 (October-April) with three rates each of nitrogen (@ 0, 22 and 44kg N/ha from urea) and phosphorus (@ 0, 22 and 44kg P₂O₅/ha from TSP) along with a basal dose of potassium (28 kg K₂O/ha) and cowdung (500 kg/ha) showed significant yield increase over control due to applied nitrogen and phosphorus. Nitrogen effects were more pronounced and distinct compared to that of phosphate effects. Applied nitrogen and phosphate also interacted positively to produce significant yield increases.

Keywords: Yield, Nitrogen, Phosphorus, Fertilizers, Brinjal

Location: Central Farm, BARI, Joydepur

Start Date: 00-10-1978

End Date: 00-04-1979

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

To find out the yield potentiality of brinjal (Solanum melongena cv. Singnath) as affected by varying levels of nitrogen and phosphorus- the two most important nutrient elements whose deficiencies are more commonly found in Bangladesh soils.

Methodology:

The experiment was conducted in the Grey Terrace soils of Central Farm of BARI, Joydepur, Dacca during the period from October 1978 to April 1979. The soil of the experimental field grow silt loam of pH 6.3, organic.C 1. 09 %, total nitrogen 0.095 %, available, P 8 µg per g and CEC 14 me per 100 g. The experiment was laid out in a randomised complete block design with three rates of nitrogen (@ 0, 22 and 44 kg N/ha from urea) and three rates of phosphorus (@ 0.22 and 45 kg P p)ha from TSP). Potassium (28 kg K₂0/ha from MP) and cowdung (500 kg/ha) were applied as basal doses. The treat merits were replicated three times. The unit plot size was 4.5 m X 3.5 m. The field was thoroughly prepared following six ploughings and twelve laddering. Potassium and cowdung were applied at the final preparation of the land. Nitrogen and phosphorus were applied in two instalments by broadcasting first instalment being applied after 20 days and the second one after two months of transplanting. The brinjal seedlings of Singnath variety of about 8-10cm in length were transplanted in the third week of October, 1978. Plant to plant and row to row distances were 75 and 90cm respectively. All intercultural operations such as weeding, mulching and watering were done uniformly. The crop was harvested first on 8.1.79 and subsequent harvestings were done once in a week till 13.4.79 when most of the leaves and plants were dried out.

Source of Information: Bangladesh Horticulture,8(1):06-09,1980

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the present investigation it may be concluded that the levels of nitrogen and phosphate used to find out the optimum yield of the variety under study were not probably the maximum. Therefore, further experiments with higher levels of nitrogen and phosphate need to be conducted under different soil condition before any specific recommendation could be made.

Knowledge Management: Journal