Impacts of farmland size and benefit expectations on the utilization of straw resources: Evidence from crop straw incorporation in China

2021 ◽  
Author(s):  
Hua Lu ◽  
Yijing Chen ◽  
Peiwen Zhang ◽  
Haoting Huan ◽  
Hualin Xie ◽  
...  
Keyword(s):  
Crop Straw ◽  
Straw Incorporation

Crop straw incorporation interacts with N fertilizer on N2O emissions in an intensively cropped farmland

Geoderma ◽  
2019 ◽  
Vol 341 ◽  
pp. 129-137 ◽  
Author(s):  
Cong Xu ◽  
Xiao Han ◽  
Shuhua Ru ◽  
Laura Cardenas ◽  
Robert M. Rees ◽  
...  
Keyword(s):  
N Fertilizer ◽  
N2o Emissions ◽  
Crop Straw ◽  
Straw Incorporation

Crop straw incorporation mediates the impacts of soil aggregate size on greenhouse gas emissions

Geoderma ◽  
2021 ◽  
Vol 401 ◽  
pp. 115342
Author(s):  
Mengdie Jiang ◽  
Niping Yang ◽  
Jinsong Zhao ◽  
Muhammad Shaaban ◽  
Ronggui Hu
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Aggregate Size ◽  
Soil Aggregate ◽  
Gas Emissions ◽  
Crop Straw ◽  
Straw Incorporation

scholarly journals Effects of Long-Term Straw Management and Potassium Fertilization on Crop Yield, Soil Properties and Microbial Community in a Rice–Oilseed Rape Rotation

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1233
Author(s):  
Jifu Li ◽  
Guoyu Gan ◽  
Xi Chen ◽  
Jialong Zou
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Crop Yield ◽  
Oilseed Rape ◽  
Relative Abundance ◽  
Alpha Diversity ◽  
Crop Straw ◽  
K Fertilizer ◽  
Straw Incorporation

The present study aims to assess the influences of long-term crop straw returning and recommended potassium fertilization on the dynamic change in rice and oilseed rape yield, soil properties, bacterial and fungal alpha diversity, and community composition in a rice–oilseed rape system. A long-term (2011–2020) field experiment was carried out in a selected paddy soil farmland in Jianghan Plain, central China. There were four treatments with three replications: NP, NPK, NPS, and NPKS, where nitrogen (N), phosphate (P), potassium (K), and (S) denote N fertilizer, P fertilizer, K fertilizer, and crop straw, respectively. Results showed that long-term K fertilization and crop straw returning could increase the crop yield at varying degrees for ten years. Compared with the NP treatment, the long-term crop straw incorporation with K fertilizer (NPKS treatment) was found to have the best effect, and the yield rates increased by 23.0% and 20.5% for rice and oilseed rape, respectively. The application of NPK fertilizer for ten years decreased the bacterial and fungal alpha diversity and the relative abundance of dominant bacterial and fungal taxa, whereas continuous straw incorporation had a contradictory effect. NPKS treatment significantly increased the relative abundance of some copiotrophic bacteria (Firmicutes, Gemmatimonadetes, and Proteobacteria) and fungi (Ascomycota). Available K, soil organic matter, dissolved organic carbon, and easily oxidized organic carbon were closely related to alterations in the composition of the dominant bacterial community; easily oxidized organic carbon, dissolved organic carbon, and slowly available K were significantly correlated with the fungal community. We conclude that long-term crop straw returning to the field accompanied with K fertilizer should be employed in rice-growing regions to achieve not only higher crop yield but also the increase in soil active organic carbon and available K content and the improvement of the biological quality of farmland.

Lowland Rice Yield as Affected by Straw Incorporation and Inorganic Fertilizer Over Cropping Seasons in Fluvisol

2014 ◽  
Vol 3 (1) ◽  
pp. 129-141
Author(s):  
Brahima Koné ◽  
Zadi Florent ◽  
Gala bi Trazié Jeremie ◽  
Akassimadou Edja Fulgence ◽  
Konan Kouamé Firmin ◽  
...  
Keyword(s):  
Grain Yield ◽  
Rice Variety ◽  
Mineral Fertilizer ◽  
Lowland Rice ◽  
Inorganic Fertilizer ◽  
Cropping Season ◽  
Significant Difference ◽  
Straw Incorporation ◽  
Cropping Seasons ◽  
Fertilizer Effect

Grain yield stabilization of lowland rice over cropping seasons was explored using different compositions of inorganic fertilizers (NPK, NPKCa, NPKMg, NPKZn, NPKCaMg, NPKCaZn and NPKCaMgZn) and straw incorporation (3, 6, 9, 12 and 15 tha-1 ). No fertilizer and no straw amended plot was the control in a split-plot design with three replications laid in a Fluvisol of Guinea savanna in Centre Cote d’Ivoire. Three weeks old nursery rice variety NERICA L19 was transplanted. No significant difference of grain yield was observed between the different treatments excluding the highest yields recorded for treatments NPKMg (5.09 tha-1 ), NPKZn (5.15 tha-1 ) and NPKCaéMg (5.31 tha-1 ) compared with 12 (3.95 tha1 ) and 15 tha-1 (4.14 tha-1 ) as straw rates respectively. Grain yield declining trend was more pronounced for mineral fertilizer treatments showing twice greater depressive effect of cropping cycle compared with the straw especially, for treatments characterized by highest grain yield in the first cropping season and similar grain yields were recorded for both sources of nutrient in the third cropping cycle. Of slowness of nutrients releasing by straw, highest grain yield was expected for this soil amender within a longer period of cultivation whereas, unbalance soil micronutrients should be relevant to studious declining yield under inorganic fertilizer effect. Nevertheless, the straw rate of 12 tha-1 supplying 0.58% of NPK as mineral fertilizer equivalent can be recommended for sustaining lowland rice production in the studied agro-ecosystems unless for three cropping seasons.

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