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Response of Different Levels of Nitrogen Fertilizer and Water Stress on the Growth and Yield of Japanese Mint (mentha Arvensis L.)

Tanjia Shormina
Department of Soil Science, University of Chittagong, Chittagong-4331

M. Akhter Hossain Khan
Department of Soil, Water and Environment, University of Dhaka,Dhaka- 1000, Bangladesh

M. Alamgir
Department of Soil, Water and Environment, University of Dhaka, Dhaka- 1000, Bangladesh

Abstract/ Executive Summary:

The response of mint (Mentha arvensis L.) to different levels of nitrogen and different levels of water stress were investigated. Relative performances of different growth and yield parameters such as plant height and fresh weight of shoot as influenced by N-fertilizer and water stress were investigated. Pot experiment was conducted with five levels of N treatments- 0, 60, 120, 180, and 240 kg N ha^-1 and four levels of water conditions 100, 75%, 50 and 25% field capacity. Plant growth (height and fresh herb (product) was affected by water stress and different N levels. At 100% field capacity, the highest dose of N- (240kg N/ha) Produced maximum plant height (46.33 cm) and fresh herb product. Lower dose of N treatment decreased the plant height and herb product. Compared to 100% field capacity the fresh herb product was drastically decreased from 103.54 -31.67 g pot^-1at 25% field capacity.

Keywords: Mentha arvensis, Water stress, N-fertilization, Yield of mint

Location: Department of Soil, Water and Environment, University of Dhaka.

Start Date: 11-03-2002

End Date: 28-07-2002

Program Area: Crop-Soil-Water Management

Commodity: Mint

Objectives:

1. To find out the effect of water stress and different rates of N application on the growth and yield of Japanese mint (Mentha arvensis L.).

Methodology:

The experiment was conducted in the net house in the premises of the Department of Soil, Water and Environment, University of Dhaka. Planting material - The planting material (suckers of CIMAP/Hybrid 77) was brought from the Research field of the Bangladesh Council of Scientific and Industrial Research (BCSIR), Chittagong and suckers were transplanted after proper soil preparation The crops were hervested at 140 days after transplantation when the plants were at full blossom. The experiment was carried out from March 11, 2002 to July 28, 2002. Experimental soil media - The soil samples collected for the study belong to the ‘‘Sonatala series’’. Bulk soil samples from 0-15 cm were collected from Unarpur in the District, of Mymensing. According to Reconnaissance Soil Survey Report of Mymensing district, Sonatala series textured, ridge soils developed in Brahmaputra alluvium. These soils have a mixed dark comprises intermittently and seasonally flooded, imperfectly to poorly drained, medium yellowish brown to olivebrown and grey, friable, silt loam subsoil with usually moderate prismatic structure and grey ped cutans. Physical and chemicals analysis of soil plant samples - Soil samples were air dried and sieved by a 2mm sieve and stored for physical and chemical analysis. Moisture at field capacity and wilting point were determined by pres sure membrane apparatus at 0.33 bar and 15 bar, respectively. The collected plant samples were dried at 65⁰C and dry weights were recorded. Then the samples were ground in a grinder and preserved in plastic bottle for analysis. Standard methods were followed to analyze the soil and plant samples. Experimental setup - The experiment was divided into two sections e.g. experiment-1 and experiment-2. In experiment-1, only one nitrogen level (60 kg N/ha) was used under 4 soil moisture levels W100 (100% field capacity), W75 (75% field capacity), W50 (50% field capacity) and W25 (25% field capacity). In experiment-2, five N level N0 (without nitrogen), N60 (60 kg N/ha), N120 (120 kg N/ha), N180 (180 kg N/ha) and N240 ( 240 kg N/ha) were used for only two soil moisture levels (100% and 50%). All treatments had three replications. The pots (18cm diameter and 15 cm depth) were arranged in a completely randomized design. Nitrogen was added in three installments based dose (during pot preparation), at 40 days after transplanting (DAT), 80 DAT. All the pots were kept at field capacity till 60 DAT and after that water status was maintained according to the treatments. 5 kg of air-dried soil samples was taken in each pot. During pot preparation, Triple Super Phosphate (TSP) at a rate of 40 kg P/ha and Muriate of Potash (MP) at a rate of 40 kg K/ha were applied as a source of P and K in the soil. Urea was applied as N-treatments and 1/3 amount of each N treatment was used as basal dose. About one litter (1L) of tap water was added in each pot during the pot preparation and then the pots were kept for over night. Every pot was marked in accordance with the treatments.There were different treatment combinations. Statistical analysis - Probability values were derived using type III sum of squares (SS) from a one way anova model with factors of nitrogen level, water stress and their interaction on plant height using SPSS for windows Version 11.

Source of Information: Bangladesh J. Sci. Ind. Res. 44(1), 137-145, 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Data shows that the detrimental effect of water stress on herb yield can not be compensated with high nitrogen doses. Data on this experiment may be helpful develop the cultivars to be cultivated under water stress conditions or water limiting areas. So further research is necessary in this direction.

Knowledge Management: Journal