A pot experiment was conducted in the net house of the Agronomy department, Sher-e-Bangla Agricultural University, Dhaka during the period from November, 2018 to March, 2019 to evaluate the suitable organic source to mitigate the drought stress impact on wheat. The experiment comprised two factors viz. factor A: Three levels of organic manures, i) O 0 = Control (Without organic manure), ii) O 1 = Cowdung (10 t/ha), iii) O 2 = Poultry litter (5 t/ha), and factor B: four levels of drought i) D 0 = Control (without drought), ii) D 1 = Crown root initiation stage (at 20-29 DAS), iii) D 2 = Booting stage (at 45-54 DAS), iv) D 3 = Anthesis stage (at 55-64 DAS). The experiment was laid out in a completely randomized design (factorial) with three replications. Organic manure showed positive impact on yield and cowdung (O 1 ) gave the highest grain yield (4.06 g plant -1 ). This may be attributed to the highest number of effective tillers plant -1 (3.21), spike length (9.53 cm), spikelet spike -1 (17.31), grains spikelet -1 (2.31) and 1000-grain weight (44.61 g) of wheat in this treatment. In respect of drought imposition treatments, grain yield was found higher in control treatment (without imposition of drought) which was statistically similar with drought imposition at booting stage treatment (D 2 ). These two treatments also showed highest number of effective tillers plant -1 , spikelets spike -1 , grains spike -1 and 1000-grain weight. Regarding the interaction of organic manure and drought, cowdung without drought imposition (O 1 D 0 ) and cowdung with drought imposition at booting stage (O 1 D 2 ) were highest yielder among the other interactions which was attributed to higher 1000-seed weight, number of effective tillers plant -1 , spikelets spike -1 and grains spike -1 . Results revealed that application of organic manure could reduce the impact of drought on wheat irrespective of growth stages. However, application of cowdung (10 t ha -1 ) was found more effective to combat drought impact at booting stage of wheat compared to other growth stages.
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机译：在2019年11月到2019年11月至2019年3月的达卡，达卡在农学系，达卡进行了一家盆栽试验，评价合适的有机源，减轻对小麦的干旱压力影响。实验包括两个因素viz。因子A：三级有机粪便，i）o 0 =对照（无有机粪），ii 1 = Cowdung（10t / ha），iii）o 2 =家禽凋落物（5 t / ha）和因子B：四个水平的干旱i）D 0 =控制（无干旱），ii）d 1 =冠根发起阶段（20-29 das），iii）d 2 =引导阶段（在45-54 das），iv ）D 3 =开花阶段（55-64 das）。该实验在完全随机设计（因子）中布置有三种复制。有机粪便对产量和牛角（O 1）显示出最高籽粒产量（4.06g植物-1）。这可能归因于最高数量的有效分蘖工厂-1（3.21），穗长度（9.53cm），小穗穗-1（17.31），晶粒穗-1（2.31）和1000粒重量（44.61g）在这种治疗中的小麦。关于干旱诱导治疗，对照治疗（不施加干旱）发现谷物产量较高，其在引导阶段治疗时与干旱突出有统计学上类似的（D 2）。这两种治疗也显示出最多有效的分蘖工厂-1，小穗穗-1，谷物尖峰-1和1000粒重量。关于有机粪肥和干旱的相互作用，在没有干旱拼版的情况下进行牛角和在引导阶段（o 1 d 2）的干旱诱导的牛角突出（o 1 d 2）是最高的其他相互作用，归因于较高的1000种种子重量，有效分蘖器数量-1，小穗尖峰-1和谷物尖峰-1。结果表明，无论生长阶段如何，有机肥料的应用都可以减少干旱对小麦的影响。然而，与其他生长阶段相比，发现Cowdung（10 T HA -1）的应用更有效地对抗小麦引导阶段的干旱影响。
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