Effects of urea formulations, application rates and crop residue retention on N2O emissions from sugarcane fields in Australia

2016 ◽  
Vol 216 ◽  
pp. 137-146 ◽  
Author(s):  
W.J. Wang ◽  
S.H. Reeves ◽  
B. Salter ◽  
P.W. Moody ◽  
R.C. Dalal
Keyword(s):  
Crop Residue ◽  
N2o Emissions ◽  
Application Rates ◽  
Residue Retention

scholarly journals Exploring Suitable Biochar Application Rates with Compost to Improve Upland Field Environment

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1136
Author(s):  
Se-Won Kang ◽  
Jin-Ju Yun ◽  
Jae-Hyuk Park ◽  
Ju-Sik Cho
Keyword(s):  
Soil Quality ◽  
Chinese Cabbage ◽  
Early Period ◽  
Crop Productivity ◽  
Application Rate ◽  
Control Treatment ◽  
N2o Emissions ◽  
Treatment Area ◽  
Application Rates ◽  
Upland Field

A field experiment was carried out to investigate crop productivity, emissions of carbon dioxide (CO2) and nitrous oxide (N2O), and soil quality of an upland field treated with compost and varying rates of biochar (BC) derived from soybean stalks during crop growing periods in a corn and Chinese cabbage rotation system. Compost was supplemented with BC derived from soybean stalks at varying rates of 5, 10, 15, and 20 t ha−1 (BC5, BC10, BC15, and BC20, respectively); the control (BC0) area was untreated. Our results reveal that crop productivity and emissions of CO2 and N2O varied significantly with the biochar application rate. Moreover, irrespective of the biochar application rate, crop productivity was improved after BC application as compared to the control treatment area, by 11.2–29.3% (average 17.0 ± 8.3%) for corn cultivation and 10.3–39.7% (average 27.8 ± 12.7%) for Chinese cabbage cultivation. Peak emissions of CO2 and N2O were mainly observed in the early period of crop cultivation, whereas low CO2 and N2O emissions were determined during the fallow period. Compared to the control area, significant differences were obtained for CO2 emissions produced by the different biochar application rates for both crops. During the two cropping periods, the overall N2O emission was significantly decreased with BC5, BC10, BC15, and BC20 applications as compared to the control, ranging from 11.1 to 13.6%, 8.7 to 15.4%, 23.1 to 26.0%, and 15.0 to 19.6%, respectively (average 16.9% decrease in the corn crop period and 16.3% in the Chinese cabbage crop period). Soil quality results after the final crop harvest show that bulk density, soil organic carbon (SOC), pH, and cation exchange capacity (CEC) were significantly improved by biochar application, as compared to the control. Taken together, our results indicate that compost application supplemented with biochar is potentially an appropriate strategy for achieving high crop productivity and improving soil quality in upland field conditions. In conclusion, appropriate application of biochar with compost has the concomitant advantages of enriching soil quality for long-term sustainable agriculture and reducing the use of inorganic fertilizers.

Effect of crop residue retention on rice yield in China: A meta-analysis

2013 ◽  
Vol 154 ◽  
pp. 188-194 ◽  
Author(s):  
Shan Huang ◽  
Yongjun Zeng ◽  
Jianfu Wu ◽  
Qinghua Shi ◽  
Xiaohua Pan
Keyword(s):  
Crop Residue ◽  
Rice Yield ◽  
Meta Analysis ◽  
Residue Retention

scholarly journals Soil Organic Carbon and Labile Carbon Pools Attributed by Tillage, Crop Residue and Crop Rotation Management in Sweet Sorghum Cropping System

2020 ◽  
Vol 12 (22) ◽  
pp. 9782
Author(s):  
Mashapa Elvis Malobane ◽  
Adornis Dakarai Nciizah ◽  
Fhatuwani Nixwell Mudau ◽  
Isaiah Iguna Chabaari Wakindiki
Keyword(s):  
South Africa ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Quality ◽  
Sweet Sorghum ◽  
Crop Residue ◽  
Cropping System ◽  
Water Extractable Organic Carbon ◽  
Water Extractable ◽  
Residue Retention

Labile organic carbon (LOC) fractions are considered as sensitive indicators of change in soil quality and can serve as proxies for soil organic carbon (SOC). Although the impact of tillage, crop rotation and crop residue management on soil quality is well known, less is known about LOC and SOC dynamics in the sweet sorghum production systems in South Africa. This short-term study tested two tillage levels: no-till and conventional-tillage, two crop rotations: sweet-sorghum/winter grazing vetch/sweet sorghum and sweet-sorghum/winter fallow/sweet sorghum rotations and three crop residue retention levels: 30%, 15% and 0%. Tillage was the main factor to influence SOC and LOC fractions under the sweet sorghum cropping system in South Africa. NT increased SOC and all LOC fractions compared to CT, which concurs with previous findings. Cold water extractable organic carbon (CWEOC) and hot water extractable organic carbon (HWEOC) were found to be more sensitive to tillage and strongly positively correlated to SOC. An increase in residue retention led to an increase in microbial biomass carbon (MBC). This study concludes that CWEOC and HWEOC can serve as sensitive early indicators of change in soil quality and are an ideal proxy for SOC in the sweet-sorghum cropping system in South Africa.

scholarly journals Effect of Different Tillage Options and Residue Retention for Sustainable Crop Production in Wheatmungbean- Rice Cropping Pattern in Dry Areas

2020 ◽  
Vol 22 (2) ◽  
pp. 67-75
Author(s):  
MI Hossain ◽  
MI Hossain ◽  
MA Ohab ◽  
MHR Sheikh ◽  
BL Nag
Keyword(s):  
Crop Production ◽  
Crop Residue ◽  
Conventional Tillage ◽  
Cropping Pattern ◽  
System Productivity ◽  
Retention System ◽  
Straw Retention ◽  
Raised Bed ◽  
Conventional Practice ◽  
Residue Retention

The study was conducted to know the productivity and soil fertility status of intensified rice-wheat (RW) systems by adding a third pre-rice crop mungbeani.ewheat-mungbeanrice cropping pattern. The trial comprises five packages of practices including crop residue retention, seeding methods with tillage options imposed on the component crops in the same cropping pattern. The results indicated that keeping standing 30% crop residue in the field with minimum disturbance of soil had significant contribution on grain yield of wheat-mungbean-rice sequence compare to conventional practice of well-till without crop residue retention. System productivity and fertility were evaluated under five levels of tillage options (zero, strip, raised bed, minimum tillage by power tiller operated system (PTOS) and conventional tillage practice (CTP) in a RWM cropping pattern. Both permanent raised bed and strip till with 30% straw retention produced the highest productivity in all years and the lowest yield was also found from conventional practice with 30% straw retention.Soil organic matter in surface soil had increased by 0.12% after 3years crop cycles with 30% SR from rice and wheat and full residue retention from mungbean crop. Straw retention is an important component of soil management and may have long term positive impacts on soil quality. The combination of raised bedsystems and strip tillage with 30% residues retained appears to be a very promising technology for sustainable intensification of wheat-mungbean-rice croppingpattern in dry zone areas. Bangladesh Agron. J. 2019, 22(2): 67-75

Impact of mineral N fertilizer application rates on N2O emissions from arable soils under winter wheat

2014 ◽  
Vol 100 (1) ◽  
pp. 111-120 ◽  
Author(s):  
Ulrike Lebender ◽  
Mehmet Senbayram ◽  
Joachim Lammel ◽  
Hermann Kuhlmann
Keyword(s):  
Winter Wheat ◽  
Fertilizer Application ◽  
N Fertilizer ◽  
N2o Emissions ◽  
Arable Soils ◽  
Mineral N ◽  
Application Rates

scholarly journals Comparison of Wheat Production under Different Paddy Residue Management Methods

2020 ◽  
pp. 1-9
Author(s):  
Jagjot Singh Gill ◽  
Maninder Singh
Keyword(s):  
Crop Residue ◽  
Growth Parameters ◽  
Residue Management ◽  
Wheat Growth ◽  
Yield Attributes ◽  
Wheat Production ◽  
Wheat Cultivation ◽  
Paddy Crop ◽  
The Cost ◽  
Residue Retention

A study was conducted to compare wheat production under two previous paddy crop residue management systems by taking into account wheat growth parameters, yield attributes and economics of both systems. Farm testing of wheat production in two methods of management of paddy residue viz: sowing of wheat with happy seeder in previous paddy crop residue (paddy residue retention) and sowing of wheat with normal drill after burning of previous paddy residue (paddy residue burning: farmer practice) done in Ferozepur and Jalandhar districts on 10 farmers’ fields locations in each district during rabi season of 2016-17 and 2017-18. Dataset was analyzed using unpaired T test. Both paddy residue retention and paddy residue burning methods resulted in non-significant effect on growth parameters and yield attributes which resulted similar mean grain yields (5.48 t/ha) and (5.35 t/ha), respectively in both districts during two years of study. Paddy residue retention method reduced the cost of wheat cultivation and put a check on air pollution from burning of paddy residue in the field. It saved fertilizers by adding nutrients to the field.

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