Effects of Different Cadmium Concentrations on Survival Reproduction and Adaptation of<i>Eisenia Fetida Californica</i>

Matusevičiūtė, Audronė; Eitminavičiūtė, Irena

doi:10.1080/13921657.2005.10512702

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The worms living in metal polluted soils reached the lower weight or needed more time to reach the maximum weight than in non-polluted sites (Spurgeon and Hopkin, 1996). Heavy metal concentration in the substrate significantly reduced the growth of E. fetida (Matuseviciute et al, 2005). The results of the present study are in agreement with the work of Zaltauskaite (2010) who reported that E. fetida exposed to different concentrations of lead in soil tended to lose more weight than those in control.…”

Section: Changes In Body Weightsupporting

confidence: 90%

Effect of heavy metals on the survival, growth and development of earthworm Eisenia fetida

Kaur

Hundal

2016

JANS

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The present laboratory study was carried out to determine the effect of the metal contaminated soil on the survival, growth and development of Eisenia fetida. Metal contaminated soil samples were collected from five different sites of Ludhiana city which is an industrial hub of Punjab. Maximum heavy metal concentrations were recorded in soil sample taken from hambran around the Buddha Nullah and minimum concentration of heavy metal from haibowal. The level of heavy metals chromium and nickel (347 ppm and 189 ppm) were higher than permissible limits according to CCME (2001), whereas lead (42.6 ppm) was within permissible limits. Adult E. fetida were exposed to different concentrations of heavy metals in artificial soil for 28 days. Significant effects were observed on growth and reproduction of the tested organisms. There was 100% survival of E. fetida in soil amended with lead, chromium and nickel along with morphological abnormalities such as extrusion of coelomic fluid. It was observed that the worms in the low and high doses of heavy metal treated substrate produced cocoons with a one week and two week delay, respectively, vis-a-vis the control group. Furthermore, the emergence of hatchlings started one week earlier in control than in soil treated with medium and high concentration of metals. It is safely concluded that presence of heavy metal in soils adversely affects the growth, reproduction and development of E. fetida. Results ofthe study indicated that reproduction was more sensitive to higher concentrations of heavy metal contaminated soil than survival or weight change.

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Section: Changes In Body Weightsupporting

confidence: 90%

Effect of heavy metals on the survival, growth and development of earthworm Eisenia fetida

Kaur

Hundal

2016

JANS

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Interaction of genotype-ecological type-plant spacing configuration in sorghum [Sorghum bicolor (L.) Moench] in China

Peng

Song²,

Zhang³

et al. 2023

Front. Plant Sci.

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Grain sorghum has been a significant contributor to global food security since the prehistoric period and may contribute even more to the security of both food and energy in the future. Globally, precise management techniques are crucial for increasing grain sorghum productivity. In China, with diverse ecological types, variety introduction occasionally occurs across ecological zones. However, few information is available on the effect of ecological type on genotype performance and how plant spacing configuration influences grain yield in various ecological zones. Hence, a series of two-year field experiments were conducted in 2020 and 2021 in four ecological zones of China, from the northeast to the southwest. The experiments included six widely adapted sorghum varieties under six plant spacing configurations (two row spacing modes: equidistant row spacing (60 cm) mode and wide (80 cm)-narrow (40 cm) row spacing mode; three in-row plant spacings: 10 cm, 15 cm, and 20 cm). Our results indicated that ecological type, variety, and plant spacing configuration had a significant effect on sorghum yield. Ecological type contributed the highest proportion to the yield variance (49.8%), followed by variety (8.3%), while plant spacing configuration contributed 1.8%. Sorghum growth duration was highly influenced by the ecological type, accounting for 87.2% of its total variance, whereas plant height was mainly affected by genotype, which contributed 81.6% of the total variance. All test varieties, developed in the south or north, can reach maturity within 94-108 d, just before fall sowing in central China. Generally, sorghum growth duration becomes longer when a variety is introduced from south to north. A late-maturing variety, developed in the spring sowing and late-maturing regions, possibly could not reach maturity in the early-maturing region. The row spacing modes had no significant affect on sorghum yield, but the equal-row spacing mode consistently caused higher yields with only one exception; this might imply that equal-row spacing mode was more advantageous for boosting sorghum yield potential. In contrast, decreasing in-row plant spacing showed significant positive linear associations with sorghum grain yield in most cases. In addition, these results demonstrated that sorghum is a widely adapted crop and enables success in variety introduction across ecological zones.

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Effects of Different Cadmium Concentrations on Survival Reproduction and Adaptation ofEisenia Fetida Californica

Cited by 2 publications

References 17 publications

Effect of heavy metals on the survival, growth and development of earthworm Eisenia fetida

Effect of heavy metals on the survival, growth and development of earthworm Eisenia fetida

Interaction of genotype-ecological type-plant spacing configuration in sorghum [Sorghum bicolor (L.) Moench] in China

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