Nevertheless, suppressiveness to plant pathogens and reliability of composts are often inconsistent with unpredictable effects.
Anastasis Antoniou, Maria-Dimitra Tsolakidou, Ioannis A. Stringlis, Iakovos S. Pantelides 2017, 'Rhizosphere Microbiome Recruited from a Suppressive Compost Improves Plant Fitnessand Increases Protection against Vascular Wilt Pathogens of Tomato', Frontiers in Plant Sciencehttp://journal.frontiersin.org/article/10.3389/fpls.2017.02022/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The combination of microbial action and substrate properties of suppressiveness are discussed.
Carmen eVida, Nuria eBonilla, Antonio eDe Vicente, Francisco M. Cazorla 2016, 'Microbial profiling of a suppressiveness-induced agricultural soil amended with compostedalmond shells', Frontiers in Microbiologyhttp://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00004/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It has been found that single inoculation of the biopreparation increased suppressivenessby 1.4 times for up to 60 days.
L.R. Biktasheva, N.V. Belonogova, P.Y. Galitskaya 2016, 'On the efficiency of introduction of microbial strains used for adjusted changes ofthe compost properties', Učënye Zapiski Kazanskogo Universiteta. Seriâ Estestvennye Naukihttp://kpfu.ru/portal/docs/F1883841635/158_4_est_1.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The enhancement of soil suppressiveness using organic amendments has been widely described, especially for soil-borne diseases.
Francisco M. Cazorla, Antonio de Vicente, José A. Gutiérrez-Barranquero, Nuria Bonilla 2012, 'Enhancing Soil Quality and Plant Health Through Suppressive Organic Amendments', Diversityhttp://www.mdpi.com/1424-2818/4/4/475. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The results were encouraging, but further studies are still needed for producing compost with guaranteed suppressiveness properties.
Mauritz Vilhelm Vestberg, Sanna Kukkonen, Päivi Parikka, Dan Yu, Martin Romantschuk 2014, 'Reproducibility of suppression of Pythium wilt of cucumber by compost', Agricultural and Food Sciencehttps://journal.fi/afs/article/view/41471. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In parallel, pot tests characterized the level of soil suppressiveness and the fungal species growing from the eggs.
Ariadna eGiné, Marc eCarrasquilla, Maira eMartínez-Alonso, Núria eGaju, FranciscoJavier Sorribas 2016, 'Characterization of soil suppressiveness to root-knot nematodes in organic horticulturein plastic greenhouse', Frontiers in Plant Sciencehttp://journal.frontiersin.org/Journal/10.3389/fpls.2016.00164/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Many strategies have been taken to improve soil suppressiveness against this destructive disease, but limited success has been achieved.
Lijuan Liu, Chengliang Sun, Shuangri Liu, Rushan Chai, Weiqing Huang, Xingxing Liu,Caixian Tang, Yongsong Zhang 2015, 'Bioorganic fertilizer enhances soil suppressive capacity against bacterial wilt oftomato.', PLoS ONEhttp://europepmc.org/articles/PMC4382293?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This suggests that possibly other abiotic factors were responsible for either suppressiveness or conduciveness of these soils.
Fabrício de Ávila Rodrigues, Gilberto Fernandes Corrêa, Gaspar Henrique Korndörfer,Maria Amelia dos Santos, Lawrence Elliot Datnoff 1999, 'Efeito do silicato de cálcio e da autoclavagem na supressividade e na conducividadede dois solos à Rhizoctonia solani Influence of calcium silicate and sterilizationon the natural suppressiveness and on the conduciveness of two soils to Rhizoctoniasolani', Pesquisa Agropecuária Brasileirahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000800007. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)