Egamberdieva Dilfuza, Shurigin Vyacheslav, Alaylar Burak, Ma Hua, Müller Marina E H, Wirth Stephan, Reckling Moritz, Bellingrath-Kimura Sonoko Dorothea
Leibniz Centre for Agricultural Landscape Research (ZALF), 15374 Müncheberg, Germany.
Faculty of Biology, National University of Uzbekistan, Tashkent 100174, Uzbekistan.
Microorganisms. 2020 Mar 31;8(4):496. doi: 10.3390/microorganisms8040496.
The effects of biochar on plant growth vary depending on the applied biochar type, study site environmental conditions, microbial species, and plant-microbial interactions. The objectives of the present study were therefore to assess 1) the response of growth parameters of lupin and root disease incidence to the application of three biochar types in a loamy sandy soil, and 2) the role of endophytic bacteria in biological control of root rot disease incidence in lupin after the amendment of soil with different biochar types. As biochar types we tested (i) hydrochar (HTC) from maize silage, (ii) pyrolysis char from maize (MBC), and (iii) pyrolysis char from wood (WBC) at three different concentrations (1%, 2%, and 3% of char as soil amendments). There were no significant effects in lupin shoot and root growth in soils amended with WBC at any of the concentrations. MBC did not affect plant growth except for root dry weight at 2% MBC. HTC char at 2% concentration, significantly increased the root dry weight of lupin by 54-75%, and shoot dry weight by 21-25%. Lupin plants grown in soil amended with 2% and 3% WBC and MBC chars showed 40-50% and 10-20% disease symptoms, respectively. Plants grown in soil without biochar and with HTC char were healthy, and no disease incidence occurred. L2 and L8 isolates demonstrated a disease reduction compared to un-inoculated plants under MBC and WBC amended soil that was infested with .
生物炭对植物生长的影响因所施用的生物炭类型、研究地点的环境条件、微生物种类以及植物与微生物的相互作用而异。因此，本研究的目的是评估：1）在壤质砂土中施用三种生物炭类型对羽扇豆生长参数和根病发病率的影响；2）在不同生物炭类型改良土壤后，内生细菌在控制羽扇豆根腐病发病率方面的作用。作为生物炭类型，我们测试了：（i）玉米青贮饲料制成的水热炭（HTC），（ii）玉米制成的热解炭（MBC），以及（iii）木材制成的热解炭（WBC），三种不同浓度（1%、2%和3%的炭作为土壤改良剂）。在任何浓度下，用WBC改良的土壤中羽扇豆地上部和根部生长均无显著影响。MBC除在2%浓度时对根干重有影响外，不影响植物生长。2%浓度的HTC炭显著增加了羽扇豆根干重54 - 75%，地上部干重21 - 25%。在添加2%和3% WBC和MBC炭的土壤中生长的羽扇豆植株分别表现出40 - 50%和10 - 20%的病害症状。在未添加生物炭和添加HTC炭的土壤中生长的植株健康，未发生病害。与未接种的植株相比，L2和L8分离株在添加MBC和WBC且感染了……的改良土壤中病害有所减轻。
