Growth, yield and nutrient uptake of browntop millet (Brachiaria ramosa) under varying sowing dates and nitrogen levels

Q4 Agricultural and Biological Sciences Indian Journal of Agronomy Pub Date : 2024-05-05 DOI:10.59797/ija.v69i1.5490

A. SAI KISHORE, K BHANU REKHA, S.A. HUSSAIN, A. MADHAVI

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Abstract

A field experiment was conducted during rainy (kharif) season of 2019 at research farm of Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana to study the effect of sowing dates and nitrogen levels on growth, yield and nutrient uptake of browntop millet [Brachiaria ramosa (L.) Stapf]. The experiment was laid out in a randomized block design (RBD) on sandy loam soil with factorial concept consisting of 4 dates of sowing (June 15th, June 30th, July 15th and July 30th) and 4 nitrogen levels (0, 20, 40 and 60 kg/ha) with 3 replications. Results showed that leaf area (683, 1530 and 1412 cm2 /plant), dry-matter production (248, 540, 622 g/m2 ), number of panicles/m2 (6.52), panicle length (17.82 cm), grains/panicle (147.92), grain (2,003 kg/ha) and straw yield (3,930 kg/ha); and nutrient uptake (N, P and K) at tillering, flowering and harvest (grain and straw) were significantly higher with June 15th sowing. Among N levels, application of 60 kg N/ha recorded highest leaf area (735, 1,560 and 1,437 cm2/plant), dry-matter production (243, 523 and 619 g/m2 ), number of panicles/m2 (6.48), panicle length (19.08 cm), grains/panicle (152.42), grain (1,921 kg/ha) and straw yield (3,949 kg/ha), and nutrient uptake (N, P and K) at tillering, flowering and harvest (grain and straw) but was at par with 40 kg N/ha over 20 and 0 kg N/ha.

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不同播种期和氮素水平下褐顶黍（Brachiaria ramosa）的生长、产量和养分吸收情况

在 2019 年雨季（印度旱季），在特兰加那州海德拉巴市 Rajendranagar 的 Jayashankar 教授特兰加那州立农业大学的研究农场进行了一项田间试验，研究播种日期和氮素水平对褐顶黍 [Brachiaria ramosa (L.) Stapf] 的生长、产量和养分吸收的影响。实验采用随机区组设计（RBD），在沙质壤土上进行，因子概念包括 4 个播种日期（6 月 15 日、6 月 30 日、7 月 15 日和 7 月 30 日）和 4 个氮素水平（0、20、40 和 60 公斤/公顷），3 次重复。结果表明，在 6 月 15 日播种时，叶面积（683、1530 和 1412 平方厘米/株）、干物质产量（248、540 和 622 克/平方米）、圆锥花序数/平方米（6.52）、圆锥花序长度（17.82 厘米）、粒数/圆锥花序（147.92）、谷物产量（2,003 千克/公顷）和秸秆产量（3,930 千克/公顷）以及分蘖期、开花期和收获期（谷物和秸秆）的养分吸收量（氮、磷和钾）均显著增加。在氮水平中，施用 60 千克氮/公顷的叶面积（735、1,560 和 1,437 平方厘米/株）、干物质产量（243、523 和 619 克/平方米）、圆锥花序数/平方米（6.48）、圆锥花序长度（19.08 厘米）、谷粒/圆锥花序（152.42）、谷粒产量（1,921 千克/公顷）和秸秆产量（3,949 千克/公顷），以及分蘖期、开花期和收获期（谷粒和秸秆）的养分吸收量（氮、磷和钾），但 40 千克氮/公顷与 20 千克氮/公顷和 0 千克氮/公顷相比不相上下。

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来源期刊

Indian Journal of Agronomy Agricultural and Biological Sciences-Agronomy and Crop Science

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0.50

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期刊介绍： Indian Journal of Agronomy welcomes concise articles presenting original research data based on field experiments on all aspects of agronomy in different crops and related cropping systems. • The journal publishes only full length comprehensive articles based on new approaches/findings in English only. • Review articles are also considered but these are normally solicited by Editorial Board. However, the authors who wish to contribute a review on their own based on their standing in the relevant field may contact the Secretary or Chief Editor with a broad outline before submitting the manuscript.