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Effects of Soil Moisture on Growth, Yield and Biochemical Attributes of Lentil Genotypes

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

R. Ferdousi
Former MS Student
Department of Crop Botany, BAU, Mymensingh

Abstract/ Executive Summary:

An experiment was conducted at the Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to assess the effects of three soil moist re levels of 80, 60 and 40% field capacity (FC) on four lentil genotypes BARImasur-4 E₅M-1018, LM-30-3 and LM-30-5. Plant height, number of branches, number of leaves, root, leaf, stem weight, total dry matter per plant total chlorophyll, total sugar, reducing sugar in leaves, number of pods per plant, 1000-seed wight and seed yield per plant were the highest at 60% FC followed by 80% FC and 40% FC. BARImasur-4 showed the best performance among the genotypes.

Keywords: Lentil, Water stress, Yield

Location: Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 01-11-2004

End Date: 28-02-2005

Program Area: Crop-Soil-Water Management

Commodity: Lentil

Objectives:

The objectives of the study were to assess the effects of moisture stress on lentil genotypes and to find out stress tolerant genotype.

Methodology:

The experiment was conducted in plastic pots at Bangladesh Institute of Nuclear Agriculture, Mymensingh during November 2004 to February 2005. The soil was sandy loam in texture having pH 6.8. The collected soil was dried in the sun. A total of 72 pots (3 moisture levels x 4 genotypes x 3 replications x 2 harvests) were prepared with 8 kg soils in each pot and were placed under polyethylene sheet. Urea, TSP and MP were applied as N-P₂0₅, K₂0 @ 30-90-40 kg h^-1, respectively. Urea was applied in three equal splits. One third of the urea, entire quantity of TSP and MP were added on the day of final pot preparation. Second dose of urea was applied as top dressing at 30 days after sowing (DAS) and third dose at 45 DAS. Seeds of four genotypes of lentil namely, BARlmasur-4, E₅M-1018, LM-30-3 and LM-30-5 were sown on 21 October 2004. The experiment consisted of four genotypes and three soil moisture levels. The soil moisture levels were T₁-80 FC, T₂ - 60 FC and T₃ -40 FC. The experiment was laid out in randomized complete block design (RCBD), where each treatment was replicated 3 times. Field capacity of the soils used in the experiment was measured following gravimetric method. These measured amount of water was multiplied by 0.80, 0.60 and 0.40 to determine the amount of water to maintain 80, 60 and 40 FC, respectively. The stress treatments were applied at 20 DAS and continued up to maturity. Data on morpho-physiological and biochemical attributes were recorded at 60 DAS and yield and yield attributes at maturity. Then those were analyzed statistically with the help of MSTAT computer packages. Duncan's Multiple Range Test (DMRT) compared the means at 5 level of significance.

Source of Information: Bangladesh J. Nuclear Agric. 21 & 22: 9-16, 2006

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

BARImasur-4 showed the best performance among the genotypes.

Knowledge Management: Journal