A modelling approach to evaluate the long-term effect of soil texture on spring wheat productivity under a rain-fed condition

He, Yong; Hou, Lingling; Wang, Hong; Hu, Kelin; McConkey, B.G.

doi:10.1038/srep05736

Cited by 38 publications

(22 citation statements)

References 35 publications

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“…Thus, the assessment of soil moisture and rainfall in semiarid regions is crucial to understanding the variability in these areas and to support actions to mitigate the effects of water scarcity. Various studies have been conducted evaluating different semiarid regions of the world (Small and Kurc, 2002;Aina et al, 2007;Fischer et al, 2009;Asare et al, 2011;Mupangwa et al, 2011;Pathak et al, 2011;Zhang et al, 2011;Badel et al, 2013;He et al, 2014;Barbosa et al, 2015;Paredes et al, 2015;Barbosa and Lakshmi Kumar, 2016).…”

Section: Introductionmentioning

confidence: 99%

Impact of Soil Moisture on Crop Yields over Brazilian Semiarid

Rossato

Alvalá

Marengo

et al. 2017

Front. Environ. Sci.

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The objective of this work was to investigate the relationship between soil water content and rainfall with rice, beans, cassava and corn yields in the semiarid region of Northeast Brazil. Precipitation and modeled soil water content were compared to yields recorded at the county levels in this region. The results were also integrated over the area of the nine States that lie within the officially recognized region of semiarid climate in Brazil. The influence of water balance components was quantified by calculating their correlation coefficient with yields of the different crop species over the municipalities of the region. It was found that rainfall had higher correlation to crop yields over most of the region, while soil water content had lower values of correlation. This result is consistent with the fact that average root depth is 40 cm, lower than the layer of soil used in the model used to estimate soil water content (100 cm). Plants respond better to the precipitation in the top layers of soil, while the water storage in the deep layer of soil might be important only in other temporal and spatial scales of the hydrological cycle.

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Section: Introductionmentioning

confidence: 99%

Impact of Soil Moisture on Crop Yields over Brazilian Semiarid

Rossato

Alvalá

Marengo

et al. 2017

Front. Environ. Sci.

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“…factor for land productivity and drought tolerance (He et al, 2014). At our study site, organic C and clay contents were correlated with many soil fertility parameters (Table 2a to c).…”

Section: General Soil Fertility Conditions Of Ondombesmentioning

confidence: 77%

Soil fertility status of seasonally closed wetland ecosystem (ondombe) in north-central Namibia

Watanabe¹,

Itanna²,

Fujioka³

et al. 2017

Afr. J. Agric. Res.

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In the Cuvelai Seasonal Wetland System (CSWS) of North-central Namibia, there are widespread manifestations of seasonally flooded river and seasonally closed wetland ecosystems (ponds). These wetlands are called oshana (seasonally flooded river wetland) and ondombe (seasonally closed wetland) according to the local language. This study was initiated to find out the soil fertility status of ondombes and whether they could be utilized for agricultural purposes unlike the present situation. Soil salinity and sodicity were determined to find out impact of such adverse conditions on possibility of food production. A total of 70 representative ondombes were identified from three selected villages. A total of 210 soil samples were collected from upper, middle and lower positions adjacent to ondombes, and 15 soil samples from each 5 upland fields in the three villages and 102 soil samples from different spots of the flood plain in the three oshanas for comparison. The results indicated that the mean soil pH (H 2 O) in ondombe was 6.3, the means of organic C and total N were 6.28 and 0.41 g kg -1; respectively, the mean of available P was 4.81 mg P kg , respectively. Most soil nutrients were higher in lower ondombe positions than on upper and middle positions. Organic C, exchangeable Mg, and clay at the ondombe soils were significantly higher than those at the croplands. The means of electrical conductivity of saturation extract (ECe) and sodium adsorption ratio (SAR) in ondombe soils were 0.62 ds m -1 and 7.32, respectively; even though most of the ondombe soils did not exhibit salinity and sodicity problems. Hence, one can conclude that an ondombe soil has an appropriate condition for agriculture, and may only be prone to sodicity whenever the sodium content is high, as sometimes observed.

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“…This phenomenon will appear reversed in a drier period. He et al (2014) calculated 40% cereal yield reductions: the simulated yields of wheat were very sensitive because of soil texture. Afzalinia and Zabihi (2014) raised the problem of when to carry out the soil physical measurements.…”

Section: Discussionmentioning

confidence: 99%

“…DSSAT Ceres-Wheat was calibrated and validated by He et al (2014), who investigated two soil types using 30-year data: silt loam and clay soils. The effectiveness of inaccurate wheat yield predictions has been caused by the soil texture (soil physical properties) and the model predicted -39% yield compared to the actual measured ones (Fig.…”

Section: Modelling Of Soil Compaction Impact On Yieldmentioning

confidence: 99%

“…Characteristics of selected plots Figure 7. Correlation of wheat yield and growing season precipitation in soil with clay content >50% (He et al 2014) Cereal Research Communications 45, 2017 These differences occur significantly in silt loam soil (sand content is 54.7%, clay content is 8.6%) and the lowest level in the loam zones (sand content is 30.6%, clay content is 16.8%) in both years. Lapen et al (2002) conducted some plant and draft force measurements in experiments: in the case of maize the highest correlation value was found.…”

Section: Modelling Of Soil Compaction Impact On Yieldmentioning

confidence: 99%

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Effects of soil compaction on cereal yield

Nyéki

Milics

Kovács

et al. 2017

Cereal Research Communications

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This paper reviews the works related to the effect of soil compaction on cereal yield and focuses on research of field experiments. The reasons for compaction formation are usually a combination of several types of interactions. Therefore one of the most researched topics all over the world is the changes in the soil's physical and chemical properties to achieve sustainable cereal production conditions. Whether we are talking about soil bulk density, physical soil properties, water conductivity or electrical conductivity, or based on the results of measurements of on-line or point of soil sampling resistance testing, the fact is more and more information is at our disposal to find answers to the challenges.Thanks to precision plant production technologies (PA) these challenges can be overcome in a much more efficient way than earlier as instruments are available (geospatial technologies such as GIS, remote sensing, GPS with integrated sensors and steering systems; plant physiological models, such Decision Support System for Agrotechnology Transfer (DSSAT), which includes models for cereals etc.). The tests were carried out first of all on alteration clay and sand content in loam, sandy loam and silt loam soils. In the study we examined especially the change in natural soil compaction conditions and its effect on cereal yields.Both the literature and our own investigations have shown that the soil moisture content changes have the opposite effect in natural compaction in clay and sand content related to cereal yield. These skills would contribute to the spreading of environmental, sustainable fertilizing devoid of nitrate leaching planning and cereal yield prediction within the framework of the PA to eliminate seasonal effects.

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A modelling approach to evaluate the long-term effect of soil texture on spring wheat productivity under a rain-fed condition

Cited by 38 publications

References 35 publications

Impact of Soil Moisture on Crop Yields over Brazilian Semiarid

Impact of Soil Moisture on Crop Yields over Brazilian Semiarid

Soil fertility status of seasonally closed wetland ecosystem (ondombe) in north-central Namibia

Effects of soil compaction on cereal yield

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