Non-chemical Control of Root Parasitic Weeds with Biochar.

摘要: This study tested whether soil-applied biochar can impact the seed germination and attachment of root parasitic weeds. Three hypotheses were evaluated: (i) adsorbs host-exuded signaling molecules; (ii) activates plants’ innate system-wide defenses against invasion by parasite; (iii) has a systemic influence on amount stimulant produced or released host plant. types experiments performed: (I) pot trials with tomato (Solanum lycopersicum) infested Phelipanche aegyptiaca PERS. (Egyptian broomrape) three different at concentrations ranging from 0 to 1.5%, wherein plant biomass, P. number aegyptiaca-tomato attachments quantified; (II) split-root biochar/no-biochar under hydrophonic growing conditions performed in polyethylene bags rootings, percentage radicle numbers (III) trials, effect adsorption GR-24 (germination stimulant) was quantified. Addition soil (Experiment I) resulted lower levels infection plants, mainly through decrease attachments. led improved growth. In Experiment II, decreased biochar-treated zone as compared no-biochar control zone; accordingly. experiment showed that did not induce change activity molecules exuded roots, toxicity radicles, ability radicles penetrate roots. The major cause for physical molecule III). Adding reduce infections weeds is an innovative means potential become important strategy both non-chemical treatment this family pests, enhancing economic feasibility pyrolysis/biochar platform. platform often viewed one handful credible strategies helping mitigate climate change.