ArticleFrontiers in plant science2026
Water and nitrogen application enhance eggplant productivity and nitrogen use efficiency in an arid environment.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Water scarcity and excessive nitrogen fertilizer application are bottlenecks constraining the sustainable development of agriculture in the cold and arid Hexi Corridor region of China. However, the interactive effects of deficit irrigation and nitrogen rate on eggplant physiology, yield, and resource efficiency remain insufficiently quantified for this region, and the optimal water-nitrogen combination for practical application is unclear. To address this gap, a two-year field experiment was conducted with three water deficit levels (W0, full irrigation; W1, mild water deficit; and W2, moderate water deficit) and three nitrogen application rates (N1, low nitrogen application; N2, medium nitrogen application; and N3, high nitrogen application). Full irrigation without nitrogen application served as the control. Plant height, stem diameter, leaf area index, and dry matter accumulation (DMA) increased with increasing nitrogen application rates under the W0 and W1 levels. Appropriate water-nitrogen management enhanced DMA in fruits and improved individual fruit number and weight. The W1N2 treatment (soil moisture content at 60-70% field capacity and nitrogen application rate of 270 kg·ha
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