Soil properties and earthworm dynamics affected by land use systems in western Chitwan, Nepal

Chauhan, Ramprabesh Prasad; Pande, Keshab Raj; Shah, Shree Chandra; Dhakal, Dinesh

doi:10.3126/jiaas.v33i0.20694

Cited by 2 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An increase in the number and biomass of earthworms with the addition of superphosphate to pastures in Australia and New Zealand was reported [37]; however, the authors argued that P fertilizer led to an increase in plant production in these ecosystems and, hence, available food. In contrast, in other studies [34,38,39], a negative relationship between earthworm biomass and P content in soil was found. Some authors proved that inorganic fertilizers, including superphosphate, can be toxic to earthworms upon direct contact [12,13].…”

Section: Resultscontrasting

confidence: 72%

Phosphorus Fertilizers From Sewage Sludge Ash and Animal Blood Have No Effect on Earthworms

2020

View full text Add to dashboard Cite

Soil invertebrates are crucial for agroecosystem functioning yet sensitive to agricultural practices, including fertilization. Considering the postulates of circular phosphorus economy, the use of fertilizers from secondary raw materials is likely to return and increase and may even become obligatory. The effects of recycled fertilizers on soil fauna communities, however, remain poorly understood. In this paper, the effect of phosphorus fertilizer (RecF) and biofertilizer (RecB) from sewage sludge ash and dried animal (porcine) blood on earthworm’s occurrence in soil is discussed. RecB is RecF activated by phosphorus-solubilizing bacteria, Bacillus megaterium. Waste-based fertilizers were assessed in field experiments against commercial superphosphate and no P fertilization. Three levels of P doses were established (17.6, 26.4, and 35.2 kg P ha−1). Earthworms were collected after the test crop harvest (spring or winter wheat). In the experiments two earthworm species, Aporrectodea caliginosa and Aporrectodea rosea, were identified. A large proportion of juvenile individuals were recorded in 2017. The recycled fertilizers used in the experiments used in recommended doses, similarly to superphosphate, did not alter the density, biomass, species composition, and structure of earthworms. Further long-term field research is recommended.

show abstract

Section: Resultscontrasting

confidence: 72%

Phosphorus Fertilizers From Sewage Sludge Ash and Animal Blood Have No Effect on Earthworms

2020

View full text Add to dashboard Cite

show abstract

“…They form the major components of soil invertebrate fauna and constitute about 80% of the total soil invertebrate biomass (Lavelle and Spain, 2001). Earthworms are not uniformly distributed (Singh et al, 2016), their numbers usually differ relating to the kind of surface soil (Curry, 1998) and ecological aspects especially edaphic factors like moisture, temperature conditions (Kaleemurrahman and Ismail, 1981;Lalthanzara and Ramanujam, 2014), soil nutrients and rainfall patterns (Fragoso and Lavelle, 1995) and land-use systems (Chauhan et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Diversity and New Records of Earthworms in Arunachal Pradesh, Northeast India

Lalthanzara¹,

Zothansanga²,

Lalchhanhima³

et al. 2020

JEB

View full text Add to dashboard Cite

Arunachal Pradesh, one of the best tropical rain forest areas within Eastern Himalayan biodiversity hotspot is expected to have a rich earthworm diversity. Therefore, the present study was undertaken to document the diversity of earthworms in Arunachal Pradesh from field collection and existing literature. Earthworm specimens were collected by random sampling method by digging and hand sorting method from different habitat in Arunachal Pradesh, northeast India. Conventional methods of identification based on morpho-anatomical characters was performed. Molecular characterization, the genomic DNA was extracted followed by PCR amplification by mtDNA CO1 gene. The PCR product obtained was subjected to the Sanger sequencing by AB3500 Genetic Analyzers (ThermoFisher). Twelve earthworm taxa were identified using conventional and molecular methods of identification under eight families. Out of which, four families were previously recorded and two families viz., Rhinodrilidae and Eudrilidae are new to the existing record. Out of the 12 earthworm species, seven species are new record from the state, such as Amynthas corticis, A. gracilis, Bimastos parvus, Dichogaster modigliani, Eudrilus eugeniae, Octochaetona beatrix and Pontoscolex corethrurus. Among the identified species, A. gracilis was the most widely distributed species followed by A. corticis and Drawida nepalensis. With these seven new additions, the valid species of earthworms of Arunachal Pradesh comes to 46 species. The CO1 gene sequence of newly recorded species from Arunachal Pradesh was submitted to NCBI GenBank. Our findings enriched the diversity of earthworm species in Arunachal Pradesh by contributing two new families i.e. Rhinodrilidae and Eudrilidae and seven new species record such as Amynthas corticis, A. gracilis, Bimastos parvus, Dichogaster modigliani, Eudrilus eugeniae, Octochaetona beatrix and Pontoscolex corethrurus. Thus, the total earthworm diversity in Arunachal Pradesh has become 46, the second-highest record of all northeastern Indian states with a high potential of the new addition.

show abstract

Soil properties and earthworm dynamics affected by land use systems in western Chitwan, Nepal

Cited by 2 publications

References 16 publications

Phosphorus Fertilizers From Sewage Sludge Ash and Animal Blood Have No Effect on Earthworms

Phosphorus Fertilizers From Sewage Sludge Ash and Animal Blood Have No Effect on Earthworms

Diversity and New Records of Earthworms in Arunachal Pradesh, Northeast India

Contact Info

Product

Resources

About