Opportunities of super high-density olive orchard to improve soil quality: Management guidelines for application of pruning residues.

Journal of Environmental Management
Encarnación V TaguasJosé L Quero

Abstract

Applying pruning residues in the lanes of olive groves has become a popular practice because it is economical and accrues benefits for soil and water management. This study presents an analysis of the impact of different rates of pruning residue on soil properties, in particular related with soil quality. Over 4 annual campaigns, chopped pruning residues used as a mulch were analyzed in terms of composition, coverage and moisture content to evaluate their effects on the amount of soil organic carbon (-10 cm and -20 cm) and CO2 emissions, temperature and moisture. The experiment was carried out in a super-intensive olive orchard in Cordoba (SE, Spain) and used four amounts of fresh pruning residue: 7.5 t ha⁻1(T1), 15.0 t ha⁻1 (T2) and 30.0 t ha⁻1 (T3), with a control T0 = 0.0 t ha1. Mulch mean leaf fraction was 46.0 ± 17.5% (±SD) and initial water content, 24.8 ± 8.6%. The mulching benefits for soil moisture were observed in amounts of pruning residue >7.5 t ha⁻1, which are only produced in super-intensive olive groves or in orchards with high tree densities. The low impact of the treatments on soil moisture was explained by the dramatic annual variations in residue moisture contents, caused by the regimes of high temperatures a...Continue Reading

References

Oct 16, 2007·Journal of Environmental Management·Cristos XiloyannisMariafara Favia
Nov 6, 2010·Journal of Environmental Management·Javier Calatrava, Juan Agustín Franco
Sep 8, 2016·Frontiers in Plant Science·Concepción M DíezDiego Barranco
Nov 7, 2019·Nature·Cameron HepburnCharlotte K Williams

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