Tillage and slurry over-fertilization affect oribatid mite communities in a semiarid Mediterranean environment
Padró i Caminal, Roc
MetadataShow full item record
Fertilization with animal residues together with no-tillage is being widely used in dryland Mediterranean agriculture. The aim of this work is to assess the potential impacts of these combined anagement practices on oribatid mite species, and to evaluate their potential use as bioindicators of soil disturbances. From an experiment established ten years ago, eight fertilization treatments (including minerals or pig slurries), all combined with minimum tillage (MT) and no-tillage (NT), were studied. Four of these combinations were sampled three times during the winter cereal cropping season. The rest, and a eighbouring oak forest, were only sampled close to the end of the season (May). In total, 34 oribatid species and 4140 individuals were recovered. Oribatid abundance responded positively (p < 0.05) to the reduction of tillage intensity (NT) and marginally (p < 0.1) to slurry fertilization at sowing (close to maximum legislation allowed rate: <210 kg N ha−1 yr−1). At this slurry rate, Shannon index of diversity varied through the season, and was higher in May in MT than in NT plots. The Berger–Parker index of abundance signals plots without slurries as the most disturbed (compared with the forest). Nitrogen slurry over-fertilization reduced abundance of Oribatula(Zygoribatula) connexa connexa , but the impact on the most relevant species depended on the tillage system: Epilohmannia cylindrica cylindrica dominated in MT plots; under NT it was balanced by Tectocepheus velatus sarekensis and Passalozetes (Passalozetes) africanus. Scutovertex sculptus is also very negatively affected by tillage.Oribatida are a good target for the biological indication of soil disturbances associated to agricultural management.
Is part ofApplied Soil Ecology, 2014, vol.34, p. 124-139
European research projects
Showing items related by title, author, creator and subject.
Pig slurry and mineral fertilization strategies' effects on soil quality: Macroaggregate stability and organic matter fractions Yagüe Carrasco, María Rosa; Bosch Serra, Àngela D.; Antúnez Pujol, Montserrat; Boixadera Llobet, Jaume (Elsevier, 2010)Applying pig slurry to the land as fertilizer at appropriate agronomic rates is important to close nutrient cycles and optimize the value of organic matter. However a long-term discussion has taken place about its effects ...
Bosch Serra, Àngela D.; Yagüe Carrasco, María Rosa; Poch, Rosa M.; Molner, M.; Junyent, B.; Boixadera Llobet, Jaume (British Society of Soil Science, 2017-07-13)Effects of applications of pig slurry on soil aggregate stability are not well understood in dryland agriculture. This research aims to (i) identify aggregate stability tests that give a reliable description of the soil's ...
Yagüe Carrasco, María Rosa; Bosch Serra, Àngela D. (John Wiley & Sons, 2013)In Spain, farmers are interested in applying pig (Sus scrofa domesticus) slurry (PS) to their fields throughout the year. During the spring and summer months, ammonia (NH3) volatilization may be high. We studied the potential ...