喷灌条件下谷粒苋（Amaranthus hypochondriacus）对灌溉时间的反应

Q4 Agricultural and Biological Sciences

Indian Journal of Agronomy Pub Date : 2024-05-05 DOI:10.59797/ija.v69i1.5486

Ashok N. Chaudhary, N. N. Prajapati, Jigar Desai

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引用次数: 0

摘要

在 2019-20 年和 2020-21 年冬季（蕾期），在古吉拉特邦巴纳斯坎塔的萨达克鲁西纳加尔-丹提瓦达农业大学作物改良中心进行了一项田间试验，研究喷灌系统下谷粒苋（Amaranthus hypochondriacs L. ）对灌溉时间的响应。试验采用随机区组设计（RBD），包括 6 个灌溉处理，即 I0，地表灌溉；I1，对照（仅播种前灌溉）；I2，0.2 IW: CPE 的喷灌；I3，0.4 IW: CPE 的喷灌；I4，0.6 IW: CPE 的喷灌；以及 I5，0.8 IW:CPE 的喷灌，4 次重复。结果表明，与对照处理（地面灌溉）相比，IW：CPE 比率为 0.8 的灌溉对株高、花序长度（83.4 厘米）、谷物产量（1625 千克/公顷）和秸秆产量（7497 千克/公顷）有显著影响。0.8 IW: CPE 处理的谷物产量比对照高 28.15%。处理 I1（仅播前灌溉）的水利用效率（WUE）最高（12.8 千克/公顷-毫米）。从 I0 到 I5，耗水量（毫米）随着灌溉时间的增加而增加。在 IW：CPE 比值为 0.8 的处理中，耗水量最高，为 179.3 毫米。在综合分析中，0.8 IW: CPE 比率灌溉的净收益最高，为 54,701 `/公顷，两年的收益：成本（B:C）比为 3.06。

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Response of grain amaranth (Amaranthus hypochondriacus) to irrigation schedules under sprinkler irrigation

A field experiment was conducted during winter (rabi) seasons of 2019–20 and 2020–21 at the Centre for Crop Improvement, Sardarkrushinagar Dantiwada Agricultural University, Banaskantha, Gujarat to study the response of grain amaranth (Amaranthus hypochondriacs L.) to irrigation schedules under sprinkler irrigation system. The experiment was conducted in a randomised block design (RBD) comprised of 6 irrigation treatments, viz. I0 , Surface irrigation; I1 , Control (only pre-sowing irrigation); I2 , Sprinkler irrigation at 0.2 IW: CPE; I3 , Sprinkler irrigation at 0.4 IW: CPE; I4 ,Sprinkler irrigation at 0.6 IW: CPE; and I5 ,Sprinkler irrigation at 0.8 IW:CPE with 4 replications. The results revealed that application of irrigation at IW: CPE ratio of 0.8 had significant effect on plant height, inflorescence length (83.4 cm), grain yield (1,625 kg/ha) and straw yield (7,497 kg/ha) compared with control treatment (surface irrigation). Treatment 0.8 IW: CPE resulted in the 28.15% higher grain yield than the control. The highest water-use efficiency (WUE) (12.8 kg/ha-mm) was achieved by the treatment I1 (only pre-sowing irrigation). Consumptive use (mm) was found increased with increase in irrigation scheduling from I0 to I5 . The highest consumptive use of 179.3 mm was recorded under the treatment of 0.8 IW: CPE ratio. Irrigation at 0.8 IW: CPE ratio fetched highest net returns of `54,701/ha, with benefit: cost (B:C) ratio 3.06 during both the years in pooled analysis.

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来源期刊

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

CiteScore

0.50

自引率

0.00%

发文量

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.