Straw return increases crop grain yields and K-use efficiency under a maize-rice cropping system

Han, Yuling; Ma, Wenqi; Zhou, Baoyuan; Salah, Akram; Geng, Meiyu; Cao, Cougui; Zhan, Mei; Zhao, Ming

doi:10.1016/j.cj.2020.04.003

Cited by 23 publications

(14 citation statements)

References 56 publications

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“…Different fertilization treatments changed the physical and chemical soil properties of farmland, affecting the community diversity of soil microorganisms. Consistent with the previous results reported in the paddy-upland rotation system [53,54], alpha diversity analysis showed different effects of long-term straw incorporation and fertilization on the richness and diversity of the microbial com-munity. The PCoA plot showed significant differences (p < 0.05) in bacterial and fungal community structure under different treatments (Figure 4), which was consistent with the results of Bai et al [11], who documented clear separation of bacterial and fungal community composition between the straw utilization with no straw utilization and K fertilizer application with no K fertilizer.…”

Section: Effects Of Long-term Straw Returning and K Fertilizer On The Soil Microbial Alpha Diversitysupporting

confidence: 91%

“…As can be seen from Table 2, after 10 years of fertilization management, the soil organic C resource and the available K content changed significantly among treatments; in particular, the available K content in the NP and NPK treatments decreased significantly, which was mainly because crop harvest took away a large amount of K, leading to the imbalance of K in farmlands [53]. However, straw incorporation could clearly increase active organic C, as EOC and DOC.…”

Section: Effects Of Long-term Straw Returning and K Fertilizer On The Soil Microbial Communitymentioning

confidence: 97%

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

Gan

Chen

et al. 2021

Agriculture

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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.

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Section: Effects Of Long-term Straw Returning and K Fertilizer On The Soil Microbial Alpha Diversitysupporting

confidence: 91%

Section: Effects Of Long-term Straw Returning and K Fertilizer On The Soil Microbial Communitymentioning

confidence: 97%

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

Gan

Chen

et al. 2021

Agriculture

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“…Consistent with the results from our study, Yang et al 10 also observed that soil available potassium is significantly improved after straw return 10 . Han et al 17 study showed straw return could improve the potential capacity of soil K supplies, straw could be a potential economical K source for crops, and its replenishment efficiency was estimated to be 47% for inorganic K fertilizer under conventional management practices in maize–rice cropping system 17 . Under the condition of surplus potassium, fixation of applied straw K as K nsa and K ne were an important progress of soil potassium cycling (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Yin et al 5 reported that straw return to farmlands may counterbalance all of the K 2 O, the majority of the P 2 O 5 , and a portion of the N in chemical fertilizers 5 . K released from maize and rice straw replaces approximately half of the chemical K fertilizer, depending on the available K content in the maize–rice cropping system production 17 . In a rice-rapeseed rotation system, the return straw from the rapeseed season replaces 1/3–2/3 of potash without reducing the yield of rapeseed, and straw return with potassium fertilizer is beneficial to reduce the soil potassium deficiency 18 .…”

Section: Introductionmentioning

confidence: 99%

Long-term straw returning improve soil K balance and potassium supplying ability under rice and wheat cultivation

Zhang

Liu

et al. 2021

Sci Rep

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The aims of the present study were to provide scientific bases for rational use of crop straw to substitute chemical potassium (K) input. The effects of potassium fertilization and straw incorporation on soil K balance and K supplying in a long-term (14 years) field experiment. Five treatments were examined: (1) no fertilization (CK); (2) mineral fertilizing (NPK); (3) straw 6000 kg h m−2 (S); (4) NPK with straw 3000 kg h m−2 (NPK1/2S); and (5) NPK with straw 6000 kg h m−2 (NPKS). K composition, K balance and quantity-intensity (Q/I) relationship were studied. Under no fertilization or low straw returned conditions, soil K was unbalanced and deficienct seriously. Straw return at 6000 kg h m−2 per season with fertilization improved the soil potassium supply and K balance. Long-term K surplus (4 or 5 years), compared with NPK, the NPKS significantly increased non-special K adsorption (Knsa) and non-exchangeable K (Kne) by 5.7–11.2 mg kg−1 and 65.7–128.1 mg kg−1, respectively. Q/I relationship showed cropping without straw K or without fertilizer K resulted in lower quantity (nonspecifically and specifically held K i.e. – ∆K0 and Kx) and intensity (equilibrium activity ratio i.e. CR0K) of K in tested soils. K-fertilization with straw maintain higher exchangeable K (EK0) and a higher difference between EK0 and minimum exchangeable K(EKmin), and would help to prevent depletion in non-exchangeable pool of soil K under intensive cropping. Additionally, The straw return mainly decreased potential buffering capacity for exchangeable pool (PBCKn), 43.92–48.22% of added K in soil might be converted to exchangeable pool while it was 25.67–29.19% be converted to non-exchangeable pool. The contribution of exchangeable K towards plant K uptake would be higher in the soil with straw than the soil without straw and the non-exchangeable K would be the long-term fixed K as a supplement to the potassium pool. K fertilizer with 6000 kg h m−2 straw return in each crop season increased soil available K and slowly available K. The findings underlined importance of the straw return and contribution for sustain K supplying ability of soils.

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“…Jørgensen et al, (2020) applied 300 kg per ha N per ha under various fractionation and reported the largest corn kernel yield. Han et al, (2020) used different nitrogen partitioning methods for maize and reported that fertilizer treatment did not significantly affect the number of plants and ears but had a significant impact on grain and straw yield. Chisanga et al, (2020) reported that there were significant differences in grain yields under different levels of NPK and application, i.e., the arrangement of fractional applications had a significant impact on crop index.…”

Section: Discussionmentioning

confidence: 99%

Effect of Nitrogen Levels and Application Scheduling on the Growth and Yield of Maize

Baloch

Kaleri

Laghari

et al. 2020

JOARPS

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A field trial was conducted to assess the effect of Nitrogen (N) levels and application scheduling on the growth and grain yield of maize. The results revealed that growth and grain yield traits of maize were influenced significantly (P<0.01) due to different Nitrogen (N) levels and application schedule. Crop fertilized with the highest Nitrogen (N) level of 180 kg per ha resulted from 185.07 cm plant height, 11.94 leaves per plant, 473.92 cm leaf area per plant, 1.73 cobs per plant, 347.91 grains per cob, 15650.33 kg biomass yield and 3030.28 kg grain yield per ha. The crop receiving Nitrogen (N) at the rate of 120 kg per ha gave 177.67 cm plant height, 10.91 leaves per plant, 464.44 cm leaf area per plant, 1.60 cobs per plant, 237.04 grains per cob, 14241.80 kg biomass yield and 2762.30 kg grain yield per ha; while lowest Nitrogen (N) rate of 60 kg per ha resulted from 170.26 cm plant height, 9.89 leaves per plant, 455.15 cm leaf area per plant, 1.47 cobs per plant, 307.41 grains per cob, 13672.13 kg biomass yield and 2541.32 kg grain yield per ha. The effect of the scheduling of Nitrogen (N) application suggested that Nitrogen (N) applied in four equal splits, 25% each, 14, 28 and 42 days after emergence (DAE) ranked 1st.

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Straw return increases crop grain yields and K-use efficiency under a maize-rice cropping system

Cited by 23 publications

References 56 publications

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

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

Long-term straw returning improve soil K balance and potassium supplying ability under rice and wheat cultivation

Effect of Nitrogen Levels and Application Scheduling on the Growth and Yield of Maize

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