Next Article in Journal
Chemical Constituents, Antimicrobial Activity, and Food Preservative Characteristics of Aloe vera Gel
Previous Article in Journal
Factors Underlying Seed Yield in Red Clover: Review of Current Knowledge and Perspectives
Open AccessArticle

Small-Scale Mechanical Harvesting and Tractor-Caused Soil Compaction Reduce Early Growth in Sugarcane

by Peifang Zhao 1,2,3,†, Jiawen Guo 2,3,†, Xinxin Gao 2,3, Gaoyuan Liu 2,3, Yangrui Li 4,*, David M. Burner 2,3 and Litao Yang 1,*
1
College of Agriculture, Guangxi University, Nanning 53005, Guangxi, China
2
Yunnan Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Kaiyuan 661699, Yunnan, China
3
Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, Yunnan, China
4
Ministry of Agriculture and Rural Areas Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Guangxi Key laboratory of Sugarcane Genetic Improvement, Sugarcane Research Center, Chinese Academy of Agricultural Sciences–Guangxi Academy of Agricultural Sciences, Nanning 53007, Guangxi, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Agronomy 2019, 9(12), 830; https://doi.org/10.3390/agronomy9120830
Received: 26 September 2019 / Revised: 8 November 2019 / Accepted: 26 November 2019 / Published: 2 December 2019
Sugarcane is an important crop for sugar and biofuel production worldwide. It is mostly grown on hilly area by smallholders in China, which makes harvesting by a combine harvester impractical. Harvesting sugarcane by a small-scale harvester could be more practical. However, information about the impact of small-scale mechanical harvesting on soil compaction (SC), early growth and cane yield, and its yield components is still limited. The scarcity of quantitative information is equally true for the genotype and harvesting method interaction for traits describing early growth and final yield in sugarcane. Field experiments were conducted in a plant and two consequent ratoon crops (RCs) during 2016–2018 in Kaiyuan, Yunnan Province, China, to determine the impact of small-scale mechanical harvesting followed by tractor passages (SMH) on SC, sugarcane early growth and yield, and yield components, and to determine the genotype x treatment (harvesting methods, GT) interactions. The results indicated that, when compared to manual harvesting (MH), SMH significantly (p < 0.05) increased SC at 5, 10, and 20 cm depths by 0.6, 0.71, and 0.69 MPa for the first ratoon crop (RC), respectively; and increased by 1.4, 2.02, and 1.72 MPa at 10, 20, and 30 cm depths for the second RC, respectively. The amounts of underground bud bank (UBB) in RCs were nearly nine times the buds for establishing the plant crop (PC); positive correlations between the UBB and seedling counts were observed, with the highest correlations (r = 0.8453) occurring in May for the second RC. As compared with MH, stool damage and gaps were significantly higher in SMH; meanwhile, the UBB was lower in two RCs; the amount of seedlings, plant height, and height uniformity were significantly lower in SMH. Cane yield declined more in SMH, particularly declining by 20.59% from the first RC to the second RC. With respect to sugarcane production by SMH, the existence of significant GT interactions for stool damage, gaps, early seedling, millable stalks, and height uniformity at the maturing stage suggested that genotype selection trials should be conducted under the SMH rather than in MH. View Full-Text
Keywords: sugarcane; small-scale mechanical harvest; early growth; soil compaction; stool damage sugarcane; small-scale mechanical harvest; early growth; soil compaction; stool damage
Show Figures

Figure 1

MDPI and ACS Style

Zhao, P.; Guo, J.; Gao, X.; Liu, G.; Li, Y.; Burner, D.M.; Yang, L. Small-Scale Mechanical Harvesting and Tractor-Caused Soil Compaction Reduce Early Growth in Sugarcane. Agronomy 2019, 9, 830.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop