scholarly journals The role of organic amendments in wetland restorations

2020 ◽  
Vol 28 (4) ◽  
pp. 776-784 ◽  
Author(s):  
Brian Scott ◽  
Andrew H. Baldwin ◽  
Kate Ballantine ◽  
Margaret Palmer ◽  
Stephanie Yarwood
Keyword(s):  
Organic Amendments

scholarly journals Implication of O2 dynamics for both N2O and CH4 emissions from soil during biological soil disinfestation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen Wang ◽  
Xuehong Ma ◽  
Gang Wang ◽  
Guitong Li ◽  
Kun Zhu
Keyword(s):  
Wheat Straw ◽  
Crop Residues ◽  
Management Practice ◽  
Organic Amendments ◽  
Soil Disinfestation ◽  
Hypoxic Area ◽  
Hypoxic Fraction ◽  
Biological Soil Disinfestation ◽  
Straw Incorporation

AbstractSoil O2 dynamics have significant influences on greenhouse gas emissions during soil management practice. In this study, we deployed O2-specific planar optodes to visualize spatiotemporal distribution of O2 in soils treated with biological soil disinfestation (BSD). This study aimed to reveal the role of anoxia development on emissions of N2O and CH4 from soil amended with crop residues during BSD period. The incorporation of crop residues includes wheat straw only, wheat straw with biochar and early straw incorporation. The anoxia in soil developed very fast within 3 days, while the O2 in headspace decreased much slower and it became anaerobic after 5 days, which was significantly affected by straw and biochar additions. The N2O emissions were positively correlated with soil hypoxic fraction. The CH4 emissions were not significant until the anoxia dominated in both soil and headspace. The co-application of biochar with straw delayed the anoxia development and extended the hypoxic area in soil, resulting in lower emissions of N2O and CH4. Those results highlight that the soil O2 dynamic was the key variable triggering the N2O and CH4 productions. Therefore, detailed information of soil O2 availability could be highly beneficial for optimizing the strategies of organic amendments incorporation in the BSD technique.

Role of Organic Amendments in Sustainable Agriculture

2017 ◽  
pp. 111-124 ◽  
Author(s):  
K. Sankar Ganesh ◽  
P. Sundaramoorthy ◽  
M. Nagarajan ◽  
R. Lawrence Xavier
Keyword(s):  
Sustainable Agriculture ◽  
Organic Amendments

scholarly journals Role of organic amendments in reducing leaching of sulfosulfuron through wheat crop cultivated soil

2019 ◽  
Vol 5 ◽  
pp. 4-8 ◽  
Author(s):  
Varsha Joshi ◽  
Archana Suyal ◽  
Anjana Srivastava ◽  
Prakash Chandra Srivastava
Keyword(s):  
Organic Amendments ◽  
Wheat Crop ◽  
Cultivated Soil

The role of organic amendments in drylands restoration

2018 ◽  
Vol 5 ◽  
pp. 1-6 ◽  
Author(s):  
P. Hueso-González ◽  
M. Muñoz-Rojas ◽  
J.F. Martínez-Murillo
Keyword(s):  
Organic Amendments

scholarly journals Effect of organic amendments on the mobility of trace elements in phytoremediated techno-soils: role of the humic substances

2014 ◽  
Vol 21 (17) ◽  
pp. 10470-10480 ◽  
Author(s):  
N. Hattab ◽  
M. Soubrand ◽  
R. Guégan ◽  
M. Motelica-Heino ◽  
X. Bourrat ◽  
...  
Keyword(s):  
Trace Elements ◽  
Humic Substances ◽  
Organic Amendments

scholarly journals The role of different organic amendments to improve maize growth in wastewater irrigated soil

2021 ◽  
pp. 101583
Author(s):  
Saqib Bashir ◽  
Safdar Bashir ◽  
Allah Bakhsh Gulshan ◽  
Muhammad Jamal Khan ◽  
Javaid Iqbal ◽  
...  
Keyword(s):  
Organic Amendments ◽  
Maize Growth

scholarly journals Considerations for Unharvested Plant Potassium

2020 ◽  
pp. 147-162
Author(s):  
Ciro A. Rosolem ◽  
Antonio P. Mallarino ◽  
Thiago A. R. Nogueira
Keyword(s):  
Cover Crops ◽  
Crop Production ◽  
Organic Amendments ◽  
Crop Rotations ◽  
Exchangeable K ◽  
Rooting Zone ◽  
Weak Complexes ◽  
Fertilizer Recommendations ◽  
K Fertilizer

AbstractPotassium (K) is found in plants as a free ion or in weak complexes. It is easily released from living or decomposing tissues, and it should be considered in fertilization programs. Several factors affect K cycling in agroecosystems, including soil and fertilizer K contributions, plant K content and exports, mineralization rates from residues, soil chemical reactions, rainfall, and time. Soil K+ ions can be leached, remain as exchangeable K, or migrate to non-exchangeable forms. Crop rotations that include vigorous, deep-rooted cover crops capable of exploring non-exchangeable K in soil are an effective strategy for recycling K and can prevent leaching below the rooting zone in light-textured soils. The amount of K released by cover crops depends on biomass production. Potassium recycled with non-harvested components of crops also varies greatly. Research with maize, soybean, and wheat has shown that 50–60% of K accumulated in vegetative tissues is released within 40–45 days. A better understanding of K cycling would greatly improve the efficacy of K management for crop production. When studying K cycling in agricultural systems, it is important to consider: (1) K addition from fertilizers and organic amendments; (2) K left in residues; (3) K partitioning differences among species; (4) soil texture; (5) soil pools that act as temporary sources or sinks for K. In this chapter, the role of cash and cover crops and organic residues on K cycling are explored to better understand how these factors could be integrated into making K fertilizer recommendations.

scholarly journals The Role of Organic Amendments with Different Biodegradability in Ammonia Volatilization during Composting of Cattle Manure

2009 ◽  
Vol 28 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Sang-Sun Lim ◽  
Hyun-Jung Park ◽  
Sun-Il Lee ◽  
Dong-Suk Lee ◽  
Jin-Hyeob Kwak ◽  
...  
Keyword(s):  
Ammonia Volatilization ◽  
Organic Amendments ◽  
Cattle Manure
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