released in Nepal. ICCV 6 is the first high-yielding kabuli cultivar which combines resistance to wilt, caused by Fusarium oxysporum Schlechtend.: Fr. f. sp. ciceri (Padwick) Matuo & K. Sato, and tolerance to Helicoverpa armigera (Hiibner) pod borer and soil salinity.ICCV 6 was developed by pedigree selection from the cross 'L 550' (ICC 4973) X 'L 2' (ICC 4965). Following singleplant selection in the F 2 to F 6 generations at the ICRISAT Center, Patancheru, the ICRISAT cooperative research station, Hisar, and in an offseaspn nursery in Lebanon, it was identified as resistant to fusarium wilt in a wilt-sick plot and was bulked in the F 7 generation as Selection no. ICCX 7385-15-1-1H-1P-BP. Its resistance to Race 1 of fusarium wilt was confirmed in pot screening.In 1980-1981 it was yield tested in a replicated trial at Hisar and ranked first out of 49 entries with a mean seed yield of 2630 kg ha" 1 , compared with 1170 kg ha" 1 for that of control cultivar L 550. In the irrigated trials in the Central Zone of India, its mean yield was 2040 kg ha-1 , compared with 1810 kg ha-1 for that of L 550 over 3 yr of testing. It was also tested in the North-West Plain Zone of India from 1981-1982 to 1984-1985 in the irrigated trials where its mean seed yield was 2050 kg ha-1 as compared to 1690 kg ha-' for that of L 550. ICCV 6 was evaluated in minikit trials in farmers' fields in India (70 locations) from 1984-1985 to 1987-1988, where it outyielded L 550 by 18%. Currently it is under on-farm tests in Madhya Pradesh and Maharashtra states in India.ICCV 6 also was tested in the nonirrigated replicated yield trials and farmers' field trials in Nepal from 1986Nepal from -1987Nepal from to 1989Nepal from -1990. Over four seasons and five locations in western Nepal, its mean seed yield was 1450 kg ha-1 which was comparable with the desi-type control cultivar Sita. As a kabuli type receiving a premium market price, ICCV 6 was released for general cultivation in western Nepal in 1990. It is the first released kabuli cultivar in that country.ICCV 6 is semierect, with plant height ranging from 45 to 80 cm, and with predominantly basal branching (up to five branches per plant). Plant parts are green without anthocyanin pigment; flowers are white. It has compound leaves, with leaflets of medium size. It flowers between 60 to 70 d after sowing in central India and between 75 to 85 d in northern India and in Nepal. It matures in 130 to 170 d, depending on the growing conditions. ICCV 6 is resistant to Races 1 and 4 of F. oxysporum f. sp. ciceri. It tolerates attack by Helicoverpa pod borer (4.2% borer damage, compared with 7.8% for that of L 550 in 1984-1985 and 1985-1986), and is relatively tolerant to soil salinity, frost, and lodging compared with L 550. It has a high nodulation capacity. It yields well under both irrigated and rainfed conditions and is adapted to late sowing, as indicated by its superior performance (980 kg ha-1 , compared with 620 kg ha-1 for L 550) in trials at Hisar, India.Seeds of ICCV 6 are salmon-white a...
The concentration of anthropogenic 137Cs and naturally occurring 226Ra, 232Th and 40K radionuclides were measured in the undisturbed soil at 0-5 cm depth and water collected from the natural reservoir in the Terrene of Goainghat and Jaintapur area of Sylhet district of Bangladesh near the Indian border area by gamma ray spectrometry, with the aim of evaluating the environmental radiation hazard. The activity concentration of 137Cs was observed in all the soil and water samples, ranging from 5.22 4 - 31.74 and 1.1 - 2.2 Bqkg-1respectively. The activity level of 137Cs in this area was lower than that of Cox’ s Bazar (27.38-45.51 Bq kg-1) and higher than that of Chittagong (2.66 Bq kg-1). Values of the natural radionuclides present in the samples were greatly influenced by the geomorphological conditions in the area. The average activity of 226Ra, 232Th and 40K in soil were 57.5, 167.6 and 1202.3 Bq kg-1 respectively. The average activities of 232Th and 40K in the soil samples of this area were higher than the world average value of 25.0 and 350.0 Bq kg-1 respectively. The average γ-ray dose rate due to naturally occurring radionuclides in soil samples was found 180 nGy h-1.
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