Drought is the main abiotic stress that severely reduces wheat yield across the globe. To cope up this situation, use of organic amendments is the best option. Biochar is an organic soil amendment that is used to improve soil carbon, organic contents, improve water holding capacity of soil, enhance soil fertility and maintain desired soil. Present study was carried out under semi-arid climatic conditions to mitigate the adverse effects of drought at critical wheat growth stages i.e., tillering (DTS), flowering (DFS) and grain filling stage (DGFS) by using three biochar treatments viz. B₀=Control, B₁= 27.88 g kg^-1 and B₂=37.18 g kg^-1. Results revealed that drought stress negatively affected the growth and yield attributes of wheat at all critical growth stages, while, grain filling stage was found the most sensitive stage resulted severe yield reduction. However, biochar application significantly mitigated the detrimental effects of drought by improving number of fertile tillers (19.50%), spike length (6.52%), number of grains per spike (3.07%), thousand grain weight (6.42%), biological (9.43%) and economic yield (13.92%) as compared to control treatment. Moreover, biochar significantly improved water use efficiency and physiological attributes of drought stressed wheat. Principal component analysis linked different scales of study and demonstrated the potential of physio-biochemical traits to explain the wheat yield variations under drought condition with response to biochar application. In crux, biochar application (37.18 g kg^-1) can be used as an effective stratagem to achieve improved wheat grain yield through mitigating the adverse effects of drought stress.

干旱是主要的非生物胁迫，会严重降低全球小麦的单产。为了应对这种情况，最好使用有机修订。生物炭是一种有机土壤改良剂，可用于改善土壤碳，有机物含量，提高土壤持水能力，增强土壤肥力并维持所需的土壤。目前的研究是在半干旱气候条件下进行的，通过使用三种生物炭处理来减轻干旱在小麦关键生长阶段（分till（DTS），开花（DFS）和籽粒充实阶段（DGFS））的不利影响。B ₀ =对照，B ₁ = 27.88 g kg ^-1和B ₂ = 37.18 g kg ^-1。结果表明，干旱胁迫在所有关键生长阶段均对小麦的生长和产量特性产生负面影响，而灌浆期被认为是最敏感的时期，导致产量严重下降。然而，生物炭的施用通过提高肥力分till数量（19.50％），穗长（6.52％），每穗粒数（3.07％），千粒重（6.42％），生物学（9.43），大大减轻了干旱的不利影响。与对照处理相比，％）和经济产率（13.92％）。此外，生物炭显着提高了干旱胁迫小麦的水分利用效率和生理特性。主成分分析联系了不同的研究规模，并证明了生理生化性状可以解释干旱条件下小麦对生物炭施用的影响。在关键部位使用生物炭（37.18 g千克^-1）可作为有效的策略，通过减轻干旱胁迫的不利影响来提高小麦的籽粒产量。