Improving crop yield and N uptake with long-term straw retention in two contrasting soil types

Malhi, S. S.; Nyborg, M.; Solberg, E. D.; Dyck, Miles; Puurveen, D.

doi:10.1016/j.fcr.2011.07.009

Cited by 87 publications

(54 citation statements)

References 47 publications

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“…These changes provide good opportunities to enhance soil fertility, store more carbon in the soil and boost crop yields (Huang and Sun, 2006). As shown in our study, straw return slightly increased winter wheat and summer maize yields (Table 3) and might increase the yields significantly as the experiment continues over the longer term (Malhi et al, 2011).…”

Section: Effects Of N Application and Straw Return On Grain Yieldsmentioning

confidence: 48%

Net global warming potential and greenhouse gas intensity in a double-cropping cereal rotation as affected by nitrogen and straw management

et al. 2013

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Abstract. The effects of nitrogen and straw management on global warming potential (GWP) and greenhouse gas intensity (GHGI) in a winter wheat-summer maize doublecropping system on the North China Plain were investigated. We measured nitrous oxide (N 2 O) emissions and studied net GWP (NGWP) and GHGI by calculating the net exchange of CO 2 equivalent (CO 2 -eq) from greenhouse gas emissions, agricultural inputs and management practices, as well as changes in soil organic carbon (SOC), based on a long-term field experiment established in 2006. The field experiment includes six treatments with three fertilizer N levels (zero N (control), optimum and conventional N) and straw removal (i.e. N 0 , N opt and N con ) or return (i.e. SN 0 , SN opt and SN con ). Optimum N management (N opt , SN opt ) saved roughly half of the fertilizer N compared to conventional agricultural practice (N con , SN con ), with no significant effect on grain yields. Annual mean N 2 O emissions reached 3.90 kg N 2 O-N ha −1 in N con and SN con , and N 2 O emissions were reduced by 46.9 % by optimizing N management of N opt and SN opt . Straw return increased annual mean N 2 O emissions by 27.9 %. Annual SOC sequestration was 0.40-1.44 Mg C ha −1 yr −1 in plots with N application and/or straw return. Compared to the conventional N treatments the optimum N treatments reduced NGWP by 51 %, comprising 25 % from decreasing N 2 O emissions and 75 % from reducing N fertilizer application rates. Straw return treatments reduced NGWP by 30 % compared to no straw return because the GWP from increments of SOC offset the GWP from higher emissions of N 2 O, N fertilizer and fuel after straw return. The GHGI trends from the different nitrogen and straw management practices were similar to the NGWP. In conclusion, optimum N and straw return significantly reduced NGWP and GHGI and concomitantly achieved relatively high grain yields in this important winter wheat-summer maize double-cropping system.

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Section: Effects Of N Application and Straw Return On Grain Yieldsmentioning

confidence: 48%

Net global warming potential and greenhouse gas intensity in a double-cropping cereal rotation as affected by nitrogen and straw management

et al. 2013

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“…Plastic mulch (Liu et al, 2016; Zhao et al, 2014) and straw return measures (Jalota et al, 2001; Yan et al, 2017) are applied to crop production for increasing soil moisture conservation and boosting crop productivity in the arid regions. In particular, straw return is regarded as a key agronomic measure for the sustainable development of agriculture (Chen et al, 2015; Malhi et al, 2011). However, most of the plastic used for crop cultivation is nonbiodegradable.…”

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confidence: 99%

Straw and Plastic Mulching Enhances Crop Productivity via Optimizing Interspecific Interactions of Wheat–Maize Intercropping in Arid Areas

Yin

Fan

et al. 2019

Crop Science

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Intercropping is considered as a promising system for improving crop productivity. In arid environments, it is unknown whether the coordinated interspecific interaction can be improved via optimizing agronomic management measures. In this study, we quantified the competitiveness of the intercrops in response to straw and plastic management during both co‐growth periods, and the compensation effect of each intercrop. A late‐maturing maize (Zea mays L.) was alternately planted in field strips with an early‐maturing wheat (Triticum aestivum L.) under four straw and plastic management patterns in northwestern China from 2014 to 2016. Intercropped wheat was the dominant species, and the average index of competitiveness of wheat to maize (AWM) was 0.403. Integration of straw and plastic mulching application in wheat–maize intercropping reduced the interspecific competition and improved the compensation effect of intercropped maize. On average, no tillage with straw covering the soil in wheat strip combined with 2‐yr plastic mulching in maize strip (i.e., NTSI2) decreased the AWM by 30.9%, increased the growth rate of the intercropped maize by 23.4%, boosted grain yield of intercropped wheat and maize by 9.7 and 17.6%, and boosted total grain yields by 14.9% compared with the conventional intercropping treatment (i.e., CTI). The grain yields of intercrops are a quadratic regression with AWM, and AWM values of 0.354 to 0.375 are the most beneficial to boost the grain yields of the intercropped components. The NTSI2 treatment provided the greatest benefits for weakening the relative competitiveness of the intercrops while strengthening the compensation effect, and boosting the productivity of a wheat–maize intercropping pattern.

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“…The magnitude and frequency of reduction *Corresponding author. Email: simont@vurv.vz in yield depend upon the amount of straw retained, the actual C:N ratio of straw, rate of applied N and soil type and climatic conditions (Malhi et al 2011). Cereal straw has a very wide C:N ratio which needs to be adjusted by adding mineral nitrogen fertilizers for successful straw decomposition in the soil.…”

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confidence: 99%

Long-term effect of straw and farmyard manure on soil organic matter in field experiment in the Czech Republic

Šimon

Mikanová

Cerhanová

2013

Archives of Agronomy and Soil Science

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The effect of long-term (45 years) mineral and organic fertilization on soil organic matter (SOM) quantity (organic C and N content) and quality (hot-water-soluble C content, microbial biomass C content, hydrophobic organic components of SOM, soil enzyme activities) was determined in a field experiment established in Trutnov (North Bohemia, sandy loam, Eutric Cambisol). Six treatments were chosen for investigation: unfertilized control, mineral fertilization (NPK), straw N, farmyard manure (FYM) and straw and FYM completed with mineral NPK. Soil samples were taken from the arable layer (0-20 cm) in spring over the period of 2004-2010. The positive effect of FYM on the total organic C and N content, hot-water-soluble C content and hydrophobic organic components of SOM was more than 50% higher than that of straw and mineral N fertilization. Application of straw N increased microbial biomass C content in soil and generated invertase activity above the level of FYM. Hot-water-soluble C content, hydrophobic organic components of SOM and urease activity were positively correlated with total organic C and N content (R ¼ 0.58-0.98; p 5 0.05). Addition of mineral NPK to both the straw and FYM emphasized the effect of organic fertilization in most of monitored characteristics.

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Improving crop yield and N uptake with long-term straw retention in two contrasting soil types

Cited by 87 publications

References 47 publications

Net global warming potential and greenhouse gas intensity in a double-cropping cereal rotation as affected by nitrogen and straw management

Net global warming potential and greenhouse gas intensity in a double-cropping cereal rotation as affected by nitrogen and straw management

Straw and Plastic Mulching Enhances Crop Productivity via Optimizing Interspecific Interactions of Wheat–Maize Intercropping in Arid Areas

Long-term effect of straw and farmyard manure on soil organic matter in field experiment in the Czech Republic

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