ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Nutrition
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1604427
This article is part of the Research TopicOptimizing Fertilizer and Irrigation for Specialty Crops Using Precision Agriculture TechnologiesView all 14 articles
Optimal fertilizer rate and sowing density can improve oat quality, yield and N and P comprehensive efficiency in the Loess Plateau of China
Provisionally accepted
- 1Lanzhou University, Lanzhou, China
- 2Gansu Agricultural University, Lanzhou, Gansu Province, China
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Oat is a nutritious native species in Loess Plateau for forage and animal husbandry.By focusing on the sowing density and fertilizer rate, oats can achieve better productivity performance while maximizing nutrients use efficiency. However, the information on the responses of oats yield, quality and nutrients use efficiency to fertilization and sowing density is limited. In this study, from 2022 to 2023, a two-factor randomized block design field trial was conducted in Loess Plateau. The three sowing densities (SD, L: 75 kg/ha; M: 150 kg/ha; H: 225 kg/ha) were coupled with six fertilizer rates (FR, N0P0: no fertilization; N2: 100 N kg/ha; P2: 90 P kg/ha; N1P2: 50 N kg/ha, 90 P kg/ha; N2P1: 100 N kg/ha, 45 P kg/ha; N2P2: 100 N kg/ha, 90 P kg/ha). The effects of FR and SD on oat forage yield, quality, agronomic efficiency (AE), N/P content, uptake and its uptake efficiency and recover efficiency were investigated. In order to compare N/P efficiency more intuitively, we combined N/P content, N/P uptake, N/P uptake efficiency and N/P recover efficiency to calculate N/P comprehensive efficiency.Overall, the M-N1P2 treatment promoted the oat growth and achieved the maximum oat forage yield and quality. In the M treatment, the average crude protein (CP) content, relative feed value (RFV), forage yield, CP yield, N content, P content, N uptake and P uptake increased by 20.2 %, 4.9 %, 73.2 %, 100 %, 30.4 %, 26.3 %, 128.5 % and 118.4 %, respectively, compared with those under the no fertilization treatment; while the average neutral detergent fiber (NDF) decreased by 2.6 % in the N1P2 treatment
Keywords: oat, Sowing density, Fertilizer rate, yield, quality, Nutrients use efficiency
Received: 02 Apr 2025; Accepted: 29 May 2025.
Copyright: © 2025 Zhang, Wang, Malik, Wang, Zhao and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Chunjie Li, Lanzhou University, Lanzhou, China
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