Improved yields and essential oil composition of ajowan (Trachyspermum ammi L.) and soil fertility properties in intercropping systems

IF 1.4 4区 农林科学 Q3 AGRONOMY
Monireh Zandi, S. Khalesro, Z. Sharifi
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引用次数: 2

Abstract

ABSTRACT Legume-based intercropping systems have been proposed as sustainable and eco-friendly systems with potential to improve crop production and soil fertility. A field experiment was conducted in two growing seasons (2017 and 2018) to determine optimal intercropping patterns of ajowan (Trachyspermum ammi L.) and fenugreek (Trigonella foenum-graecum L.) to increase yield and quality of the ajowan and to improve soil properties. The treatments evaluated in this study were sole cropping of ajowan (A) and fenugreek (F), replacement intercropping series of A:F (1:1, 4:4, 3:1, and 1:3 ratios) and additive intercropping series of A:F (100:12.5, 100:25, 100:37.5, 100:50, 100:62.5, 100:75, and 100:87.5 ratios). The results showed that the highest biological yield (4172.7 kg ha−1), seed yield (1009.7 kg ha−1), and essential oil yield (42.0 kg ha−1) of ajowan were obtained in the additive pattern A:F 100:25. The highest concentrations of thymol and γ-terpinene, the major chemical components of ajowan essential oil, were recorded for the A:F 100:25 intercropping pattern. Total LER and ATER indices were above one in all of the intercropping patterns. The concentrations of soil total organic carbon (TOC) and nitrogen (TON), available forms of NO3 − and NH4 +, Mg2+, K+, as well as basal respiration (BR) and substrate-induced respiration (SIR) in the A:F 100:25 intercropping pattern were greater than for the fenugreek and ajowan sole crops. Overall, the analysis showed that the A:F 100:25 additive intercropping pattern had positive and strong effects in terms of increased yield and quality of ajowan and improvement of soil fertility.
间作系统中提高ajowan(Trachyspermum ammi L.)产量和精油成分及土壤肥力特性
摘要:以豆类为基础的间作系统被认为是一种可持续的、生态友好的系统,有可能提高作物产量和土壤肥力。在两个生长季节(2017年和2018年)进行了田间试验,以确定胡芦巴(Trigonella foenum graecum L.)和阿骨丸(Trachyspermum ammi L.)的最佳间作模式,以提高阿骨丸的产量和质量,改善土壤性质。本研究中评估的处理是阿霍湾(A)和胡芦巴(F)的单作,A:F的替代间作系列(1:1、4:4、3:1和1:3比例)和A:F(100:12.5、100:25、100:37.5、100:50、100:62.5、100:75和100:87.5比例)的附加间作系列。结果表明,在添加模式A:F100:25下,阿和湾的生物产量(4172.7 kg ha−1)、种子产量(1009.7 kg ha−2)和精油产量(42.0 kg ha−3)最高。阿和湾精油的主要化学成分百里酚和γ-萜品烯的最高浓度记录在A:F100:25间作模式下。所有间作模式的LER和ATER总指数均在1以上。A:F100:25间作模式的土壤总有机碳(TOC)和氮(TON)、有效态NO3−和NH4+、Mg2+、K+以及基础呼吸(BR)和基质诱导呼吸(SIR)的浓度高于胡芦巴和阿霍湾单一作物。综合分析表明,A:F100:25加性间作模式对阿霍湾的增产、提质和提高土壤肥力具有积极而有力的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Biological Agriculture & Horticulture
Biological Agriculture & Horticulture 农林科学-农艺学
CiteScore
3.30
自引率
6.70%
发文量
18
审稿时长
>36 weeks
期刊介绍: Biological Agriculture & Horticulture aims to act as the central focus for a wide range of studies into alternative systems of husbandry, and particularly the biological or organic approach to food production. The Journal publishes work of a sound scientific or economic nature related to any aspect of biological husbandry in agriculture, horticulture and forestry in both temperate and tropical conditions, including energy and water utilization, and environmental impact.
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