Responses of canopy characteristics and water use efficiency to ammoniated straw incorporation for summer maize (Zea mays L.) in the Loess Plateau, China

Feng, Huijun; Chen, Ji; Feng, Hao; Dong, Qianli; Siddique, Kadambot H. M.

doi:10.1016/j.agwat.2021.106948

Cited by 18 publications

(6 citation statements)

References 49 publications

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“…The study area is classi ed as a monsoon climate, with an annual mean temperature of 12.9℃, annual mean pan evaporation of 1500 mm, 2196 h total sunshine hours, 220 d frost-free period, and about 550 mm mean annual rainfall, which mainly occurs from July to September (early spring and winter are always dry and cold, and summer is moist and hot). The basic physicochemical properties (Li et al, 2021 and2022) of the soil (0-20 cm) at the experimental site across the ve growing seasons are in Table S1.…”

Section: Site Descriptionmentioning

confidence: 99%

Ammoniated Straw Incorporation Improves Soil Structure with Increasing Grain Productivity in Dryland Areas

Li¹,

Li²,

Feng³

et al. 2022

Preprint

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To meet the increasing challenges for food security, agricultural management should aim to maximize grain yield and export from the field while improving soil fertility. However, the effects of different straw incorporation on soil aggregates, grain yield and soil C and N contents as well as their potential linkages remain poorly understood. In this study in China, we simultaneously investigated soil aggregates, SOC and TN and grain yield. The three treatments: (i) no straw (CK, the local traditional practice), (ii) straw plowed into the soil (SP), and (iii) ammoniated straw plowed into the soil (ASP, straw with low C/N ratios). The SOC content in the macro-aggregates (> 5 mm) and the micro-aggregates (≤ 0.25 mm) differed among the CK, SP, and ASP plots after 5 growing years, i.e., ASP > SP > CK. In addition, the ASP treatment had the highest grain yield, 5-year mean grain yield and aboveground biomass compared with CK and SP treatments. The ASP treatment significantly increased SOC and TN content in topsoil layers, relative to CK and SP treatments. These results suggest that we could potentially shape soil structure, increase yield stability, soil C and N content under ASP treatment. Our results highlight the importance of optimal crop straw returning on soil structure, grain yield and SOC and TN content, whereas long-term continuous measurements and observations are still required to have a good understanding of sustainable agriculture.

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Section: Site Descriptionmentioning

confidence: 99%

Ammoniated Straw Incorporation Improves Soil Structure with Increasing Grain Productivity in Dryland Areas

Li¹,

Li²,

Feng³

et al. 2022

Preprint

Self Cite

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“…China produces approximately 700–900 million tons of straw annually, which is the largest amount in the world. In recent years, returning straw to the soil has emerged as an effective agricultural strategy to improve the soil physical properties and increase crop yields (Li et al, 2021; Wang, Shen, et al, 2019). Returning straw to the field can reduce the risk of loss of nitrate nitrogen (NO 3 − ‐N) by leaching, improve the retention of N in the soil and effectively alleviate the degradation of soil quality caused by the sole application of chemical fertilizer (Meng et al, 2017; Zhang, Bai, et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Straw addition promotes the nitrification process and the wheat yield linked to trophic interactions among microbes

Jia,

Zhou,

Qiu

et al. 2024

European J Soil Science

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Straw return with nitrogen (N) fertilizer can generally regulate soil N cycling by affecting the microbial community, thereby influencing crop productivity. Bacteria and fungi play a key role in nitrification, while the effects of soil microbial interactions that include protists under the condition of straw return and N fertilizer remain uncertain. Here, we evaluated the importance of the soil microbiome, particularly protists and ammonia‐oxidizing bacteria (AOB), in regulating the soil N transformation potential and wheat yields under different fertilization practices. The results showed that the activity of β‐1,4‐N‐acetylglucosaminidase (NAG) and the potential nitrification rate (PNR) increased significantly by 156.4% ~ 312.3% and 183.1% ~ 402.6% with the addition of N fertilizer and straw, respectively. The effect on PNR was greater for straw than fertilizer addition. The fertilization practices changed the microbial community structure, and there were stronger responses from the protists and AOB. The soil microbiome formed three closely co‐occurring modules (Modules 0, 1 and 2). Among them, Module 0 showed strong positive correlations with the soil total N, NAG, PNR and crop yield and may be the key ecological cluster. Moreover, the predatory protists Cercozoa, Conosa and Ochrophyta in Module 0 were significantly positively associated with the activity of NAG and the PNR, yields and AOB. The predatory protists in Module 0 may change the soil potential nitrification rate and enhance the yield of wheat by preying on the competitors of AOB. The results suggest that the incorporation of straw promotes the N transformation potential and wheat yields linked to trophic interactions between predatory protists and AOB in fluvo‐aquic soil.

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“…4 This good population structure is conducive to the formation of a canopy microclimate suitable for crop growth and development, which not only greatly increases crop yield but also improves crop quality. 5,6 The canopy microclimate refers to the special microclimate formed by the crop canopy in farmland, which mainly includes the comprehensive status of agrometeorological elements such as light, temperature, relative humidity, and wind speed in the crop canopy. These are affected strongly by planting methods, cultivation and management measures, climate, and density of crops, and they affect crop growth and yield to a great extent.…”

Section: Introductionmentioning

confidence: 99%

“…Intercropping is the rational allocation of crops with various spatial niches in the same season to achieve complementarity of time or space in the utilization of resources; it helps to form an efficient plant community that can make full use of all types of natural resources 4 . This good population structure is conducive to the formation of a canopy microclimate suitable for crop growth and development, which not only greatly increases crop yield but also improves crop quality 5,6 …”

Section: Introductionmentioning

confidence: 99%

Changes in canopy microclimate of faba bean under intercropping at controlled nitrogen levels and their correlation with crop yield

et al. 2023

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Background The relationship between the microclimate of the intercropping faba bean canopy and yield, and its response to nitrogen application, was studied in the crop canopy to clarify that intercropping and nitrogen application changed the microclimate of the faba bean canopy and affected the yield. Results In field experiments in Eshan and Xundian, the growth index, light transmittance, interception rate of photosynthetic effective radiation, temperature, relative humidity, and yield of the faba bean were determined using three planting methods (wheat monoculture, faba bean monoculture, and wheat‐faba bean intercropping) and four nitrogen application levels, N0 (0 kg/hm2), N1 (45 kg/hm2), N2 (90 kg/hm2), and N3 (180 kg/hm2). The results showed that the application of nitrogen improved the growth index of monoculture and intercropping broad beans significantly, reduced the canopy light transmittance and temperature significantly, and increased the interception rate and relative humidity of photosynthetic effective radiation significantly. Compared with N0, the yield of broad bean in both places was the highest in N1, which increased by 14% (Eshan) and 15% (Xundian). Conclusion Multiple linear stepwise regression and path analysis showed that the decrease in canopy light transmittance during the faba bean pod‐setting stage and the interception rate of photosynthetic effective radiation during pod‐bulging stage, caused by excessive nitrogen application, were the main climatic and ecological factors limiting the increase in the intercropping faba bean yield in Eshan and Xundian respectively. The optimum nitrogen application rate recommended in production is 45 kg/hm2, to reduce the nitrogen application rate and maximize the productivity of the wheat and faba bean system. © 2023 Society of Chemical Industry.

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Responses of canopy characteristics and water use efficiency to ammoniated straw incorporation for summer maize (Zea mays L.) in the Loess Plateau, China

Cited by 18 publications

References 49 publications

Ammoniated Straw Incorporation Improves Soil Structure with Increasing Grain Productivity in Dryland Areas

Ammoniated Straw Incorporation Improves Soil Structure with Increasing Grain Productivity in Dryland Areas

Straw addition promotes the nitrification process and the wheat yield linked to trophic interactions among microbes

Changes in canopy microclimate of faba bean under intercropping at controlled nitrogen levels and their correlation with crop yield

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