Redirigiendo al acceso original de articulo en 23 segundos...
Inicio  /  Agronomy  /  Vol: 14 Par: 2 (2024)  /  Artículo
ARTÍCULO
TITULO

Herbicide Applications Reduce Gaseous N Losses: A Field Study of Three Consecutive Wheat?Maize Rotation Cycles in the North China Plain

Xiangzhou Zheng    
Chenyi Zou    
Yasa Wang    
Shuping Qin    
Hong Ding and Yushu Zhang    

Resumen

Herbicide residues in farmland soils have attracted a great deal of attention in recent decades. Their accumulation potentially decreases the activity of microbes and related enzymes, as well as disturbs the nitrogen cycle in farmland soils. In previous studies, the influence of natural factors or nitrogen fertilization on the soil nitrogen cycle have frequently been examined, but the role of herbicides has been ignored. This study was conducted to examine the effects of herbicides on NH3 volatilization- and denitrification-related nitrogen loss through three rotation cycles from 2013 to 2016. The four treatments included no urea fertilizer (CK), urea (CN), urea+acetochlor-fenoxaprop-ethyl (AC-FE), and urea+2,4D-dicamba (2,4D-DI) approaches. The results showed that the application of nitrogen fertilizer significantly increased the nitrogen losses from ammonia volatilization and denitrification in the soil. Ammonia volatilization was the main reason for the gaseous loss of urea nitrogen in a wheat?maize rotation system in the North China Plain (NCP), which was significantly higher than the denitrification loss. In the CK treatment, the cumulative nitrogen losses from ammonia volatilization and denitrification during the three crop rotation cycles were 66.64 kg N hm-2 and 8.07 kg N hm-2, respectively. Compared with CK, the nitrogen losses from ammonia volatilization and denitrification under the CN treatment increased 52.62% and 152.88%, respectively. The application of AC-FE and 2,4D-DI significantly reduced the nitrogen gas losses from the ammonia volatilization and denitrification in the soil. Ammonia volatilization reduction mainly occurred during the maize season, and the inhibition rates of AC-FE and 2,4D-DI were 7.72% and 11.80%, respectively, when compared with CN. From the perspective of the entire wheat?maize rotation cycle, the inhibition rates were 5.41% and 7.23% over three years, respectively. Denitrification reduction also mainly occurred in the maize season, with the inhibition rates of AC-FE and 2,4D-DI being 34.12% and 30.94%, respectively, when compared with CN. From the perspective of the entire wheat?maize rotation cycle, the inhibition rates were 28.39% and 28.58% over three years, respectively. Overall, this study demonstrates that herbicides could impact the nitrogen cycle of farmland soil ecosystems via the suppression of ammonia volatilization and denitrification rates, thus reducing gaseous N losses and mitigating global climate change.

 Artículos similares

       
 
Renan Souza Silva, Ananda Scherner, Cristiane Jovelina Da-Silva, Edinalvo Rabaioli Camargo, Roque Mauricio Palacios-Zuñiga, Fabio Schreiber, Luciano do Amarante, José Maria Barbat Parfitt and Luis Antonio de Avila    
Minimum tillage in rice production is increasing in southern Brazil, reaching 60% of the total planted area. Compared to conventional tillage, in this system there is an increase in the occurrence of perennial weeds, such as Luziola peruviana and Leersia... ver más
Revista: Agriculture

 
Insa Kühling, Shohrukh Atoev and Dieter Trautz    
The Western Siberian grain belt is of global significance in terms of agricultural production as well as carbon sequestration and biodiversity preservation. Regional downscaling of general circulation models predict increasing drought risks and water sca... ver más
Revista: Agriculture

 
Jannis Machleb, Benjamin L. Kollenda, Gerassimos G. Peteinatos and Roland Gerhards    
Weed hoeing can be successfully performed in wide row crops, such as sugar beet, maize, soybean and wide spaced cereals. However, little experience is available for hoeing in narrow cereal row spaces below 200 mm. Yet, mechanical weed control can pose an... ver más
Revista: Agriculture

 
Fernando H. Oreja, Fernando Bastida, José L. Gonzalez-Andújar     Pág. 299 - 308
A bioeconomic model was developed for decision-making regarding large crabgrass (Digitaria sanguinalis) control in glyphosate-resistant soybeans in the Rolling Pampas of Argentina. The model was used to evaluate the economic returns of four different gly... ver más

 
Maria R. Rocha-Pereira, Antônio E. Klar, Dagoberto Martins, Guilherme S. Ferreira de Souza, Juana Villalba     Pág. 211 - 220
This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in... ver más