scholarly journals The Crop Residue Removal Threshold Ensures Sustainable Agriculture in the Purple Soil Region of Sichuan, China

2021 ◽  
Vol 13 (7) ◽  
pp. 3799
Author(s):  
Peng Zhang ◽  
Yuxin He ◽  
Tao Ren ◽  
Yang Wang ◽  
Chao Liu ◽  
...  

Sichuan, a hilly area in southwestern China, is recommended as a bioethanol production base because of its abundant crop residue resources. However, removing the crop straw for bioethanol may negatively affect soil fertility and productivity due to the local purple soil vulnerability. To explore the impact of crop residue removal on soil fertility and productivity and meet the needs of sustainable agriculture, we conducted a crop residue removal experiment by measuring the soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) contents, and crop yield in the purple soil region in southwest China. Soil erosion was also simulated by Revised Universal Soil Loss Equation version 2 (RUSLE 2). The results showed that soil erosion increased with the increase of the straw removal rate. Compared with 0% removal treatment, the SOC content reduced at other removal rate treatments, especially for long-term residue removal. The effect of residue removal on soil TN and TP was not consistent within one year. After two years, residue removal greater than 25% caused a decrease in TN by 1.6–3.7%, and straw removal greater than 50% caused a TP decrease by 8.5–9.3%. More than 25% of the residue removed reduced maize and canola yields, and TN and TP content. However, all crop residue removal treatments resulted in SOC content reduction and soil erosion deterioration. In conclusion, crop residue removal was not recommended due to agricultural sustainability in Sichuan, China.

2017 ◽  
Vol 72 (5) ◽  
pp. 97A-104A ◽  
Author(s):  
Humberto Blanco-Canqui ◽  
Charles Wortmann

2020 ◽  
Vol 55 (4) ◽  
pp. 462-468
Author(s):  
Hardev Sandhu ◽  
Ron Cherry ◽  
Mubashar Nadeem

Abstract A field trial was conducted to determine the effects of harvest method (green cane harvest versus preharvest burning) and different crop residue removal treatments on the populations of ground-inhabiting arthropod predators and Elasmopalpus lignosellus (Zeller) (Lepidoptera: Pyralidae) in the first ratoon crop. Neither preharvest burning nor percentage crop residue removal after green cane harvest had any significant effect on the numbers of ants (Hymenoptera: Formicidae) (F = 1.00; df = 4; P = 0.412) or spiders (Araneae) (F = 0.08; df = 4; P = 0.921) captured in pitfall traps. In contrast, crop residue levels remaining after green cane harvest significantly impacted E. lignosellus damage to the ratoon crop, with increased damage associated with lower levels of residue. Removal of ≥66% of the crop residue caused a significant (F = 132.68; df = 3; P < 0.001) increase in E. lignosellus damage that would likely reduce sugarcane yield, while 33% of the residue could be removed without increasing damage. Overall, our data indicate that green cane harvesting will not affect arthropod ground predators but may reduce the risk of E. lignosellus damage.


2006 ◽  
Vol 91 (1-2) ◽  
pp. 15-21 ◽  
Author(s):  
Stephen D. Sparrow ◽  
Carol E. Lewis ◽  
Charles W. Knight

2018 ◽  
Vol 622-623 ◽  
pp. 474-480 ◽  
Author(s):  
Agata Novara ◽  
Antonino Pisciotta ◽  
Mario Minacapilli ◽  
Antonino Maltese ◽  
Fulvio Capodici ◽  
...  

Author(s):  
May Zar Myint ◽  
Raihana Habib Kanth ◽  
F. A. Bahar ◽  
S. S. Mehdi ◽  
A. A. Saad ◽  
...  

Soil is the fundamental and necessary natural resource for the agricultural production system. Due to the increasing global population and the impact of climate changes, natural resources are the major limiting factor to use widely for food production. The major factors responsible for the deterioration of natural resources are extreme events caused by man-made activities and unexpected and unpredictable adverse natural forces of nature. Among the different degradation processes, soil erosion is one of the serious threatens to the deterioration of soil for the agricultural sector and healthy ecosystem conservation. Intensive agricultural practices are particularly caused by the acceleration of the soil erosion process. Therefore, the good and systematic management of soil resources is indispensable not only for sustainable agriculture or conservation agriculture but also for the protection and reduction of the natural ecosystem. Covering crop residues on soil enhances organic matter, protects the soil surfaces, maintains water and nutrients, improves soil biological activity and chemical composition, and contributes to pest management. Therefore, crop residue management is one of the conservation practices and is designed to leave sufficient residue on the soil surface to reduce wind and water erosion. It includes all field operations that affect the amount of residue, its an orientation to the soil surface and prevailing wind and rainfall patterns and the residue distribution throughout the period requiring protection. This paper especially highlights the status of soil erosion, crop residues, and management in crop residues in sustainable agriculture.


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