In the mountains of Northern Vietnam, frequent and intense acid rain impacts the crops. This paper assesses the impacts of simulated acid rain (SAR) on the progress and the yield of soybeans (Glycine max (L.) Merr.) in Hoa Binh province. A subject research in the summer time–autumn seasons in 2017 (from May to August) in an space of 189 sq. meters was organized in keeping with a Randomized Complete Block Design (RCBD) with three repetitions together with six remedies and a management. The experimental space was shielded from ambient rain. Soybean crops have been uncovered 3 times every week to SAR at pH 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, and 6.0 (management). The outcomes present that the progress parameters comparable to germination price, stem size, and the quantity of fundamental branches of the crops dramatically decreased in a dose–impact experiment. Gradual declines in the chlorophyll content material (not directly decided by SPAD) and the leaf space index (LAI) have been noticed as the acidity elevated. The precise yield and yield elements additionally tended to lower when the pH of the rainwater fell, particularly in the experimental plots handled at pH 3.0. The progress and yield of soybean have been adversely affected when the crops have been uncovered to simulated acid rain, particularly from a pH worth of 3.5 and decrease. This is the first research to judge the results of acid rain on the progress and the yield of soybean grown in the mountains of Northern Vietnam.
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