Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping
The plant growth regulator EDAH, a combination of ethephon and diethyl aminoethyl hexanoate, has been shown to reduce maize lodging and increase crop yield under monoculture systems. However, its effectiveness under intercropping conditions remains uncertain. This study presents findings from a thre...
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2024-12-01
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| author | Xiaojin Zou Jiayi Xu Huasen Xu Liang Gong Lizhen Zhang Ying Wang Liangshan Feng Zhanxiang Sun |
| author_facet | Xiaojin Zou Jiayi Xu Huasen Xu Liang Gong Lizhen Zhang Ying Wang Liangshan Feng Zhanxiang Sun |
| author_sort | Xiaojin Zou |
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| description | The plant growth regulator EDAH, a combination of ethephon and diethyl aminoethyl hexanoate, has been shown to reduce maize lodging and increase crop yield under monoculture systems. However, its effectiveness under intercropping conditions remains uncertain. This study presents findings from a three-year (2020–2022) experiment that investigated the effects of EDAH application on maize and peanut yields, as well as lodging rates, within a maize/peanut intercropping system. The experimental setup included four treatments: sole maize without EDAH, sole peanut without EDAH, intercropped maize and peanut without EDAH, and intercropped maize and peanut with EDAH. Results across the three years revealed that foliar application of EDAH significantly increased maize yield by 13.6% and peanut yield by 28.3%, compared to the non-EDAH treatment in the intercropping system. Moreover, the land-equivalent ratio improved by 13.4%, indicating better land use efficiency. Maize lodging in the intercropping system with EDAH decreased by 48.7%. Additionally, EDAH-treated maize in the intercropping system exhibited a 12.1% reduction in plant height and a 27.7% reduction in ear height compared to untreated maize. The internodes 1–5 of EDAH-treated intercropped maize were 1.93–7.80 cm shorter, while the basal internode diameter increased by 3.30 to 4.90 cm. These morphological changes contributed to improved stalk strength, as evidenced by increases in stalk crush strength, rind penetration strength, and bending strength, which together improved maize lodging resistance. Collectively, these results suggest that the application of EDAH is a promising measure to reduce maize lodging and increase overall crop productivity in maize/peanut intercropping systems. |
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| language | English |
| publishDate | 2024-12-01 |
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| series | Agronomy |
| spelling | doaj-art-eacd94d5c6c84dfd861401ce4543bf022025-01-24T13:16:39ZengMDPI AGAgronomy2073-43952024-12-011518410.3390/agronomy15010084Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut IntercroppingXiaojin Zou0Jiayi Xu1Huasen Xu2Liang Gong3Lizhen Zhang4Ying Wang5Liangshan Feng6Zhanxiang Sun7Liaoning Academy of Agricultural Sciences, Shenyang 110161, ChinaLiaoning Academy of Agricultural Sciences, Shenyang 110161, ChinaCollege of Natural Resources and Environmental Sciences, Hebei Agricultural University, Baoding 071001, ChinaLiaoning Academy of Agricultural Sciences, Shenyang 110161, ChinaBeijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094, ChinaLiaoning Agricultural Development Service Center, Shenyang 110031, ChinaLiaoning Academy of Agricultural Sciences, Shenyang 110161, ChinaLiaoning Academy of Agricultural Sciences, Shenyang 110161, ChinaThe plant growth regulator EDAH, a combination of ethephon and diethyl aminoethyl hexanoate, has been shown to reduce maize lodging and increase crop yield under monoculture systems. However, its effectiveness under intercropping conditions remains uncertain. This study presents findings from a three-year (2020–2022) experiment that investigated the effects of EDAH application on maize and peanut yields, as well as lodging rates, within a maize/peanut intercropping system. The experimental setup included four treatments: sole maize without EDAH, sole peanut without EDAH, intercropped maize and peanut without EDAH, and intercropped maize and peanut with EDAH. Results across the three years revealed that foliar application of EDAH significantly increased maize yield by 13.6% and peanut yield by 28.3%, compared to the non-EDAH treatment in the intercropping system. Moreover, the land-equivalent ratio improved by 13.4%, indicating better land use efficiency. Maize lodging in the intercropping system with EDAH decreased by 48.7%. Additionally, EDAH-treated maize in the intercropping system exhibited a 12.1% reduction in plant height and a 27.7% reduction in ear height compared to untreated maize. The internodes 1–5 of EDAH-treated intercropped maize were 1.93–7.80 cm shorter, while the basal internode diameter increased by 3.30 to 4.90 cm. These morphological changes contributed to improved stalk strength, as evidenced by increases in stalk crush strength, rind penetration strength, and bending strength, which together improved maize lodging resistance. Collectively, these results suggest that the application of EDAH is a promising measure to reduce maize lodging and increase overall crop productivity in maize/peanut intercropping systems.https://www.mdpi.com/2073-4395/15/1/84intercroppinglodgingcrop yieldyield componentsinternode lengthmaize physiology |
| spellingShingle | Xiaojin Zou Jiayi Xu Huasen Xu Liang Gong Lizhen Zhang Ying Wang Liangshan Feng Zhanxiang Sun Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping Agronomy intercropping lodging crop yield yield components internode length maize physiology |
| title | Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping |
| title_full | Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping |
| title_fullStr | Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping |
| title_full_unstemmed | Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping |
| title_short | Ethephon and Diethyl Aminoethyl Mixture (EDAH) Reduces Maize Lodging and Enhances Overall Productivity in Maize/Peanut Intercropping |
| title_sort | ethephon and diethyl aminoethyl mixture edah reduces maize lodging and enhances overall productivity in maize peanut intercropping |
| topic | intercropping lodging crop yield yield components internode length maize physiology |
| url | https://www.mdpi.com/2073-4395/15/1/84 |
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