Irrigated corn yield and soil phosphorus response to long‐term phosphorus fertilization

IF 2 3区农林科学 Q2 AGRONOMY

Agronomy Journal Pub Date : 2024-07-24 DOI:10.1002/agj2.21650

Guillermo Raul Balboa, Richard Ferguson, Laila Puntel

{"title":"Irrigated corn yield and soil phosphorus response to long‐term phosphorus fertilization","authors":"Guillermo Raul Balboa, Richard Ferguson, Laila Puntel","doi":"10.1002/agj2.21650","DOIUrl":null,"url":null,"abstract":"Long‐term experiments can help to understand soil phosphorus (P) dynamics and improve nutrient management strategies. This research evaluated long‐term (2002–2021) soil P dynamics and yield response to a range of P fertilizer rates in a continuous high‐yielding irrigated corn (Zea mays L.) experiment with low initial soil phosphorus test (SPT, 10.5 mg kg−1). The experiment was established near Clay Center, NE, and five P rates (0, 10, 20, 39, and 59 kg P ha−1) were evaluated. Soil samples at 20‐cm depth were collected in eight cropping seasons. Yield response to P fertilizer increased after 20 years from 0.64 to 2.79 Mg ha−1. The application of 39 kg P ha−1 year−1 increased soil Bray‐1 P to 19.5 mg kg−1, outyielded all other P treatments, and resulted in a positive relative P balance. Over 20 years, 0 kg P ha−1 year−1 decreased Bray‐1 P from 10.5 to 5.5 mg kg−1. Annual P rates of 0, 10, and 20 kg P ha−1 produced a negative relative P balance and SPT below the critical soil test value (CSTV). The CSTV was 22.2 mg kg−1 for a continuous irrigated corn cropping system. A 53% increase in the P fertilizer rate (from 39 to 59 kg P ha−1 year−1) produced a threefold increment in the soil test P build‐up rate. High‐yielding irrigated continuous corn production systems (>14 Mg ha−1) are required to apply at least 39 kg P ha−1 year−1 to maintain SPT and a positive relative P balance over years.","PeriodicalId":7522,"journal":{"name":"Agronomy Journal","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agronomy Journal","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1002/agj2.21650","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}

引用次数: 0

Abstract

Long‐term experiments can help to understand soil phosphorus (P) dynamics and improve nutrient management strategies. This research evaluated long‐term (2002–2021) soil P dynamics and yield response to a range of P fertilizer rates in a continuous high‐yielding irrigated corn (Zea mays L.) experiment with low initial soil phosphorus test (SPT, 10.5 mg kg−1). The experiment was established near Clay Center, NE, and five P rates (0, 10, 20, 39, and 59 kg P ha−1) were evaluated. Soil samples at 20‐cm depth were collected in eight cropping seasons. Yield response to P fertilizer increased after 20 years from 0.64 to 2.79 Mg ha−1. The application of 39 kg P ha−1 year−1 increased soil Bray‐1 P to 19.5 mg kg−1, outyielded all other P treatments, and resulted in a positive relative P balance. Over 20 years, 0 kg P ha−1 year−1 decreased Bray‐1 P from 10.5 to 5.5 mg kg−1. Annual P rates of 0, 10, and 20 kg P ha−1 produced a negative relative P balance and SPT below the critical soil test value (CSTV). The CSTV was 22.2 mg kg−1 for a continuous irrigated corn cropping system. A 53% increase in the P fertilizer rate (from 39 to 59 kg P ha−1 year−1) produced a threefold increment in the soil test P build‐up rate. High‐yielding irrigated continuous corn production systems (>14 Mg ha−1) are required to apply at least 39 kg P ha−1 year−1 to maintain SPT and a positive relative P balance over years.

查看原文本刊更多论文

灌溉玉米产量和土壤磷对长期磷肥的响应

长期实验有助于了解土壤磷（P）的动态变化并改进养分管理策略。这项研究评估了初始土壤磷测试（SPT，10.5 mg kg-1）较低的连续高产灌溉玉米（Zea mays L.）试验中土壤磷的长期（2002-2021 年）动态以及产量对一系列磷肥施用量的响应。试验在东北部的克莱中心附近进行，评估了五种磷肥施用量（0、10、20、39 和 59 千克磷/公顷-1）。在八个耕种季节收集了 20 厘米深的土壤样本。20 年后，产量对磷肥的反应从 0.64 兆克/公顷增加到 2.79 兆克/公顷。施用 39 千克 P ha-1 年-1 的土壤 Bray-1 P 增加到 19.5 毫克 kg-1，产量超过所有其他 P 处理，并导致正的相对 P 平衡。在 20 年的时间里，每年每公顷施用 0 千克 P 会使 Bray-1 P 从 10.5 毫克 kg-1 降至 5.5 毫克 kg-1。每年每公顷 0、10 和 20 千克 P 的施肥量产生负的相对 P 平衡，SPT 低于临界土壤测试值 (CSTV)。连续灌溉玉米种植系统的临界土壤检测值为 22.2 毫克/千克。钾肥施用量增加 53%（从 39 千克钾/公顷-年-增加到 59 千克钾/公顷-年-1），土壤测试钾累积率增加三倍。高产灌溉连作玉米生产系统（>14 兆克/公顷-1）需要每年施用至少 39 千克 P，以维持 SPT 和多年的正相对 P 平衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Agronomy Journal 农林科学-农艺学

CiteScore

4.70

自引率

9.50%

发文量

265

审稿时长

4.8 months

期刊介绍： After critical review and approval by the editorial board, AJ publishes articles reporting research findings in soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture. Notes are published about apparatus, observations, and experimental techniques. Observations usually are limited to studies and reports of unrepeatable phenomena or other unique circumstances. Review and interpretation papers are also published, subject to standard review. Contributions to the Forum section deal with current agronomic issues and questions in brief, thought-provoking form. Such papers are reviewed by the editor in consultation with the editorial board.

文献相关原料

公司名称	产品信息	采购帮参考价格