Suppression Effects on Pineapple Soil-Borne Pathogens by Crotalaria juncea,Dolomitic Lime and Plastic Mulch Cover on MD-2 Hybrid Cultivar
作者机构：FitopatologíaColegio de PostgraduadosMontecillo-Texcoco56230México CONACyT-Universidad Autónoma de San Luis PotosíCIACYTSan Luis Potosí78000México EdafologíaColegio de PostgraduadosMontecillo-Texcoco56230México Instituto Nacional de Investigaciones ForestalesAgrícolas y PecuariasVeracruz94270México Rebouças São JoséA.UESB/DFZVitória da Conquista95Brasil
出 版 物：《Phyton-International Journal of Experimental Botany》 (国际实验植物学杂志（英文）)
年 卷 期：2021年第90卷第4期
页 面：1205-1216页
核心收录：
学科分类：0710[理学-生物学] 1002[医学-临床医学] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0904[农学-植物保护] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学]
主 题：Suppressive soil integrated pest management Phytophthora nicotiannae Phytoparasitic nematodes
摘 要：The development and implementation of sustainable and environmentally friendly agricultural practices are indispensable as alternatives to pesticide use and to keep populations of soil-borne plant pathogens at levels that do not affect crop productivity.The present research evaluates the incidence of soil-borne phytopathogens on the pineapple variety MD-2,which was subjected to different treatments:Incorporation of Crotalaria juncea into the soil(organic amendment),application of dolomitic lime to soil(inorganic amendment),and the use of plastic mulch covering the soil.During the crop cycle(15 months),the following variables were evaluated:plant height(cm),fruit weight(kg·plant^(−1)),crop yield(ton·ha^(−1)),the bud root disease incidence caused by Phytophthora nicotianae,number of soil phytoparasitic nematodes and colony-forming-units(CFUs)of soil fungi and oomycetes.The results indicate that Crotalaria juncea treatment reduced the pathogen population(nematode and oomycetes)at levels that did not affect crop development,so that yield increased(18–20%).The incorporation of C.juncea into the soil as an organic amendment favors the populations of fungi disease suppressors(Trichoderma-Aspergillus).The phytoparasitic nematodes(Meloidogyne sp.,Pratylenchus sp.,and Mesocriconema sp.)and oomycetes(Phytophthora spp.,and Pythium spp.)showed a reduction of their population levels by effects of organic amendment(C.juncea).The plastic mulch was also effective,probably due to the maintenance of optimal condition to crop growth and weed control.However,the dolomitic lime application had the poorest effect under the conditions of the study area on the variables analyzed.The described observations are characteristics of a system-based approach for the potential management of soil-borne pathogens of pineapple MD-2 in Veracruz,México.
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