Comparative Evaluation of Nano Urea Versus Conventional Urea for Nitrogen Management in Rainfed Sunflower (Helianthus annuus L.) Cultivation in Acid Sandy Loam Soils of Assam.

Asian Research Journal of Agriculture Pub Date : 2024-02-03 DOI:10.9734/arja/2024/v17i1407

Shriya Devi, Jayanta Kalita, B. Borkotoki, Nikhilesh Baruah, Hemendra Choudhury

{"title":"Comparative Evaluation of Nano Urea Versus Conventional Urea for Nitrogen Management in Rainfed Sunflower (Helianthus annuus L.) Cultivation in Acid Sandy Loam Soils of Assam.","authors":"Shriya Devi, Jayanta Kalita, B. Borkotoki, Nikhilesh Baruah, Hemendra Choudhury","doi":"10.9734/arja/2024/v17i1407","DOIUrl":null,"url":null,"abstract":"A field experiment was conducted during rabi, 2021-22 at the experimental plot of the Department of Agronomy, Biswanath College of Agriculture (BNCA), Assam Agricultural University (AAU), Biswanath Chariali, Assam having geographic coordinates 26°43'30'' N and 93°08'08'' E to assess nitrogen management in Sunflower (Helianthus annuus L.) with conventional and nano urea under rainfed farming situations in the North Bank Plain Zone of Assam. The experiment confined to 10 treatments in Randomized Block Design (RBD) viz., T1: Control (No Nitrogen), T2: Soil application of 50% N, T3: Soil application of 100% N (RD), T4: 3 foliar applications of 0.6% nano urea, T5: Soil application of 50% N + 2 foliar application of 1% conventional urea, T6: Soil application of 50% N + 2 foliar application of 2% conventional urea, T7: Soil application of 50% N + 2 foliar application of 3% conventional urea, T8: Soil application of 50% N + 2 foliar application of 0.2% nano urea, T9: Soil application of 50% N + 2 foliar application of 0.4% nano urea, T10: Soil application of 50% N + 2 foliar application of 0.6% nano urea. Results revealed that there was no significant effect on the seedling emergence percentage due to different nitrogen management treatments. The highest plant height (84 cm) and maximum number of leaves (33) were found in T10. T9 showed the maximum values of Relative Leaf Water Content (RLWC) (71%), leaf area index (LAI) (3.2 and 4.2 at 60 and 90 DAS), chlorophyll content index (30 DAS) and head diameter (16.70 cm). For most of the growth and phenological parameters, T9 and T10 were at par with each other. T1 (no nitrogen) was the earliest to complete its life cycle which is reflected in 50% heading (65 days) and days to maturity (97 days). Dry matter accumulation varied at different time intervals, initially, it was highest in T3 but later T9 and T10 showed the maximum values. In terms of seed yield, test weight and chaffy grain percentage (%), T9 showed the best results: (1505 kg/ha), (54 g/1000 seeds) and (20%) respectively, followed by T10. Whereas the highest stover yield was recorded in T10. The highest Benefit to Cost ratio (B:C ratio of 1.60) was obtained in the T9.","PeriodicalId":505475,"journal":{"name":"Asian Research Journal of Agriculture","volume":"560 2","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Research Journal of Agriculture","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9734/arja/2024/v17i1407","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

A field experiment was conducted during rabi, 2021-22 at the experimental plot of the Department of Agronomy, Biswanath College of Agriculture (BNCA), Assam Agricultural University (AAU), Biswanath Chariali, Assam having geographic coordinates 26°43'30'' N and 93°08'08'' E to assess nitrogen management in Sunflower (Helianthus annuus L.) with conventional and nano urea under rainfed farming situations in the North Bank Plain Zone of Assam. The experiment confined to 10 treatments in Randomized Block Design (RBD) viz., T1: Control (No Nitrogen), T2: Soil application of 50% N, T3: Soil application of 100% N (RD), T4: 3 foliar applications of 0.6% nano urea, T5: Soil application of 50% N + 2 foliar application of 1% conventional urea, T6: Soil application of 50% N + 2 foliar application of 2% conventional urea, T7: Soil application of 50% N + 2 foliar application of 3% conventional urea, T8: Soil application of 50% N + 2 foliar application of 0.2% nano urea, T9: Soil application of 50% N + 2 foliar application of 0.4% nano urea, T10: Soil application of 50% N + 2 foliar application of 0.6% nano urea. Results revealed that there was no significant effect on the seedling emergence percentage due to different nitrogen management treatments. The highest plant height (84 cm) and maximum number of leaves (33) were found in T10. T9 showed the maximum values of Relative Leaf Water Content (RLWC) (71%), leaf area index (LAI) (3.2 and 4.2 at 60 and 90 DAS), chlorophyll content index (30 DAS) and head diameter (16.70 cm). For most of the growth and phenological parameters, T9 and T10 were at par with each other. T1 (no nitrogen) was the earliest to complete its life cycle which is reflected in 50% heading (65 days) and days to maturity (97 days). Dry matter accumulation varied at different time intervals, initially, it was highest in T3 but later T9 and T10 showed the maximum values. In terms of seed yield, test weight and chaffy grain percentage (%), T9 showed the best results: (1505 kg/ha), (54 g/1000 seeds) and (20%) respectively, followed by T10. Whereas the highest stover yield was recorded in T10. The highest Benefit to Cost ratio (B:C ratio of 1.60) was obtained in the T9.

查看原文本刊更多论文

纳米尿素与传统尿素在阿萨姆邦酸性砂质壤土向日葵（Helianthus annuus L.）雨养栽培中的氮管理比较评价。

阿萨姆邦北岸平原区，地理坐标为北纬 26°43'30''，东经 93°08'08''，阿萨姆邦农业大学比斯瓦纳特农业学院（BNCA）农学系在该实验区进行了一项田间试验，以评估在雨水灌溉条件下，在阿萨姆邦北岸平原区向日葵（Helianthus annuus L.）中使用传统尿素和纳米尿素的氮素管理情况。试验采用随机区组设计（RBD），共设 10 个处理，即 T1：对照（无氮），T2：土壤施用 50%的氮，T3：土壤施用 100%的氮：T4：3 次叶面喷施 0.6%的纳米尿素；T5：土壤施 50%的氮+2 次叶面喷施 1%的常规尿素；T6：土壤施 50%的氮+2 次叶面喷施 2%的常规尿素；T7：土壤施 50%的氮+2 次叶面喷施 3%的常规尿素；T8：土壤施 50%的氮+2 次叶面喷施 0.2%的纳米尿素；T9：土壤施氮 50%+叶面喷施 2 次 0.4%的纳米尿素；T10：土壤施氮 50%+叶面喷施 2 次 0.6%的纳米尿素。结果表明，不同氮肥管理处理对出苗率没有显著影响。T10 的株高最高（84 厘米），叶片数最多（33 片）。T9 的叶片相对含水量（RLWC）（71%）、叶面积指数（LAI）（60 DAS 和 90 DAS 时分别为 3.2 和 4.2）、叶绿素含量指数（30 DAS）和头径（16.70 厘米）均为最大值。在大多数生长和物候参数方面，T9 和 T10 的表现不相上下。T1（无氮）最早完成其生命周期，这体现在 50%的头状花序（65 天）和成熟天数（97 天）上。干物质积累在不同的时间间隔有所变化，最初，T3 的干物质积累最高，但随后的 T9 和 T10 显示出最大值。在种子产量、测试重量和糠秕粒百分比（%）方面，T9 的结果最好：分别为（1505 公斤/公顷）、（54 克/1000 粒）和（20%），其次是 T10。而 T10 的秸秆产量最高。T9 的效益成本比（B:C 比为 1.60）最高。

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

Asian Research Journal of Agriculture

自引率

0.00%

发文量