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Performance of Advanced Grasspea Genotypes/varieties Under Different Levels of Irrigation Water Salinities (2015--2016)

M. A. HOSSAIN
IWM Division, BARI, Gazipur

A. R. AKANDA
IWM Division, BARI, Gazipur

S. K. BISWAS
IWM Division, BARI, Gazipur

M. OMAR ALI
PRC, BARI, Gazipur.

Abstract/ Executive Summary:

This study was conducted in plastic pots in the polyhouse of Irrigation and Water Management (IWM) Division at Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh during 2014-2015. A total of 5 (five) grasspea genotypes and 1 (one) variety were considered for trial. Three (3) levels of salinities i.e. 4 dS/m, 8 dS/m, and 12 dS/m were considered in irrigation water. Among the six genotypes/varieties, 2 (two) of them i.e. SEL-1348 and BKX-002-4 performed well up to a salinity of 8 dS/m. Among the two genotypes, SEL-1348 performed very well (69.92 g/plant at 4 dS/m and 45.55 g/plant at 8 dS/m). The genotype, BKX-002-4 produced some less yield per plant (41.51 g/plant at 4 dS/m and 36.67 g/plant at 8 dS/m) than those of genotype, SEL-1348. These two genotypes can be tested in saline soils in the upcoming season.

Keywords: Salinity, Polyhouse, Irrigation, Grasspea

Location: Irrigation and Water Management (IWM) Division at Bangladesh Agricultural Research Institute (BARI), Gazipur

Start Date: 00-00-2013

End Date: 00-00-2016

Program Area: Crop-Soil-Water Management

Commodity: Grasspea, Water salinity

Objectives:

This study was undertaken with the following objectives:

To screen out the genotypes/cultivars/lines against different levels of soil salinity
To evaluate the effectiveness of saline water irrigation

Methodology:

The experiment was conducted in plastic pots in the polyhouse of Irrigation and Water Management (IWM) Division at Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh during 2014-2015. Six (6) genotypes/varieties (BKX-0002-4, SEL-1335, SEL-1345, SEL-1348, SEL-1351and BARI Khesari-3) were tested under different levels of irrigation water salinity during 2013-2014. Seeds of different khesari genotypes/varieties were sown in pots on 12 November 2014, with 3 seeds sown in a pot. Each pot was filled up with sandy loam fresh (Non-saline) soils. Irrigation was applied with fresh water for proper germination. Three gazi tanks were used for 3 levels of water salinity. Salinity was created artificially in irrigation water with a mixture of Cacl₂ and Nacl at a ratio of 1:2. Irrigation was applied through pipe systems. Recommended doses of fertilizers were used. Soil and water salinities were monitored at 7 days intervals. The crop was harvested on 10 March 2015. All physiological and yield contributing characters were recorded. The treatments were as follows:

Treatments

T₁= Saline water irrigation with the salinity of 4 dS/m

T₂= Saline water irrigation with salinity of 8 dS/m

T₃= Saline water irrigation with salinity of 12 dS/m

Each treatment was replicated four times during 2014-2015.

Source of Information: Annual Research Report 2015-2016, Irrigation and Water Management Division, BARI, Joydebpur, Gazipur

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The comparison of mortality of plants in khesari genotypes/varieties during 2014-15 in different dates from the growing season. It shows that the mortality percentage of plants increased with the increase of salinity levels. . It also showed that the mortality percentage of plants of grasspea varied from genotype/variety to genotype/variety. The highest existing plant was observed against a different level of salinity for the genotype of SEL-1348 followed by genotype DKX-002-4. After 15th January around10 mm rainfall occurred. The rainwater helped to increase the mortality of plants. The yield and yield contributing characters of different grasspea genotypes/varieties during 2014-15. The highest yield/plant was observed to be 69.92 gm, 41.00 gm and 3.22 gm for the salinity levels of 4 dS/m, 8 dS/m and 12 dS/m, respectively in genotype SEL-1348 followed by 45.55 gm and 36.67 gm for the salinity level of 4 ds/m and 8 ds/m in genotype BKX-002-4, respectively. For genotype BKX-002-4 there was no existing plant in the salinity level of 12 dS/m. The overall yield was low because of excess soil moisture due to rainfall in the middle of January and also to high temperature. The plant height, length of the pod, pod/plant, cull pod/plant, seed/pod, 1000 seed weight are also shown in Table 2 for different levels of salinity in different genotypes/variety of khesari. The genotypes, SEL-1348, and BKX-002-4 performed better among the six genotypes/varieties. So these genotypes can be used for a field trial in the saline soils next season. Seasonal soil salinity (dS/m) of the pot experiment in different treatments from sowing to the harvest of grasspea during 2014-15 are presented in Table 3. Table 3 shows that the soil salinity level in different treatments from sowing to harvest during 2014-15 was found to have a similar trend for different soil salinity levels. The two promising grasspea genotypes SEL-1348 and BKX-002-4 performed well against the irrigation water salinity up to 12 dS/m during the screening of 2014-15 in pot culture. These two genotypes will be tested in saline soils in the upcoming season.

Knowledge Management: Report/Proceedings