Insufficient and excessive N fertilizer input reduces maize root mass across soil types

Ordóñez, Raziel A.; Castellano, Michael J.; Danalatos, Gerasimos; Wright, Emily E.; Hatfield, Jerry L.; Burras, Lee; Archontoulis, Sotirios

doi:10.1016/j.fcr.2021.108142

Cited by 35 publications

(22 citation statements)

References 82 publications

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“…It was found in this study that TSS, TSU, VC and LY showed a trend of increasing and then decreasing with the increase of fertilization When the fertilization rates increased from F1 to F2, soil fertilization increased the content of nitrogen, phosphorus and potassium in the root zones of tomatoes, prompted the growth of crop root, delayed fruit ripening, extended the time of photosynthesis, and increased the sugar content and mineral ion content of fruit [41]. When the fertilization rates increased from F2 to F3, on the one hand, the content of soil nitrogen [42], phosphorus [43] and potassium [44] was higher than the amount absorbed by plants, resulting in excess soil nutrients and higher ion concentration per unit volume and producing toxic effect on roots. On the other hand, excessive nutrient absorbed by tomato plants resulted in abnormal plant physiology and ecology, such as yellowing of tomato leaves and inhibition of photosynthetic capacity [45].…”

Section: Effects Of Different Treatments On Fruit Quality Of Tomato I...mentioning

confidence: 99%

Growth and Fruit Yields of Greenhouse Tomato under the Integrated Water and Fertilizer by Moistube Irrigation

Zhang

Xiao

et al. 2022

Agronomy

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The mechanism of greenhouse tomato growth and yield under the integrated water and fertilizer of moistube irrigation (MI) is not clear. Thus, to fill the research gap, a completely randomized trial design was used to study the effects of different irrigation amounts (I; to realize different I, the tube working pressure was 1 (I1), 2 (I2), 3 (I3) m) and fertilizer amounts (F, N-P-K: 20%-20%-20%; the F at a single time was 100 (F1), 200 (F2) and 300 (F3) kg/ha) on growth and yield of tomato. The results showed that with an increase in I, the photosynthetic rate (Pn) of leaves and total dry matter mass (TDM) first increased and then decreased, while the nutrition and the flavor indexes of fruit decreased. With an increase in F, the Pn of leaves, the TDM of tomato and the fruit quality increased at first and then decreased. The effects of I on the yield of tomato was higher than that of F. With an increase in I, the partial fertilizer productivity (PFP) increased at first and then decreased, and the water use efficiency (WUE) decreased by 13.96%. With an increase in F, the WUE increased at first and then decreased, and the PFP decreased by 148.97%. The conclusion based on a spatial analysis was consistent with the comprehensive evaluation of yield and water use efficiency, which showed that I2F2 was the best.

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Section: Effects Of Different Treatments On Fruit Quality Of Tomato I...mentioning

confidence: 99%

Growth and Fruit Yields of Greenhouse Tomato under the Integrated Water and Fertilizer by Moistube Irrigation

Zhang

Xiao

et al. 2022

Agronomy

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“…However, root biomass N and root N concentration did not decline. Roots are an important contributor to belowground soil C (Balasdent & Balabane, 1996); Ordóñez et al (2021) speculated that the reduction in root mass might account for reduced soil C storage at high N levels. Also, a high N concentration would lower the C/N ratio, which, at least in the short term, could alter root decomposition kinetics (Johnson et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Cover crop and nitrogen rate management practices influence corn NDVI and nitrogen content

2022

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Cover crops are rarely adopted in the northern Corn Belt because of short growing periods but could provide benefits when grown between wheat (Triticum aestivum L.) and corn (Zea mays L.). We evaluated corn normalized difference vegetation index (NDVI) and leaf N (at six leaf, ear leaf, 75% silk, and physiological maturity), over three growing seasons in response to factorial treatments of cover crop of annual ryegrass [Lolium perenne L. ssp. multiflorum (Lam.) Husnot], radish [Raphanus sativus L.], and no-cover control, and N rate (0×, 0.25×, 0.5×, and 1×) relative to the recommended rate based on pre-plant soil tests (157-190 kg N ha −1 ). Grain N was also measured in the last study year (2016) to evaluate if leaf N indicated grain N. Radish cover crop increased corn NDVI relative to the no-cover control, but annual ryegrass decreased NDVI relative to no-cover control. This response to cover crop treatment suggests that radish cover crop may improve corn nutritional status. Corn receiving 1× N rate had the slowest decrease in leaf N over the growing season, but 2016 data revealed that grain from all treatments receiving some level of N had similar N content. Root biomass was also highest in the 0.5× N rate treatment and could explain the previously reported result that 0.5× N rate results in highest corn yield. Taken together, these results suggest that half the recommended N fertilizer can be used with little effect on nutritional status of corn following spring wheat in the northern Corn Belt.

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“…Under the effects of the above comprehensive factors, the root distribution at the experimental site should be shallow. The study of Wang et al (2018) also proved that maize cultivated close to the experimental site (with less saline) exhibited around 70% root biomass at a 0-20 cm layer [53]. Some studies have demonstrated that nitrogen fertilizer significantly affected root traits only in the top 30 cm of the soil layer [54].…”

Section: Factors Affecting the Performance Of Soil-and Crop-based Rem...mentioning

confidence: 91%

“…Maize and sorghum were planted during May and October when maritime climate with abundant rainfall and warm temperature is prevalent. In addition, soil properties, such as texture, bulk density, fertility, and agronomic management (e.g., fertilizer placement and tillage) influence crop root traits [53]. The study area is formed by the Yellow River sediment, which has a short time of reclamation (≤2 years).…”

Section: Factors Affecting the Performance Of Soil-and Crop-based Rem...mentioning

confidence: 99%

Quick Detection of Field-Scale Soil Comprehensive Attributes via the Integration of UAV and Sentinel-2B Remote Sensing Data

et al. 2021

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Satellite and unmanned aerial vehicle (UAV) remote sensing can be used to estimate soil properties; however, little is known regarding the effects of UAV and satellite remote sensing data integration on the estimation of soil comprehensive attributes, or how to estimate quickly and robustly. In this study, we tackled those gaps by employing UAV multispectral and Sentinel-2B data to estimate soil salinity and chemical properties over a large agricultural farm (400 ha) covered by different crops and harvest areas at the coastal saline-alkali land of the Yellow River Delta of China in 2019. Spatial information of soil salinity, organic matter, available/total nitrogen content, and pH at 0–10 cm and 10–20 cm layers were obtained via ground sampling (n = 195) and two-dimensional spatial interpolation, aiming to overlap the soil information with remote sensing information. The exploratory factor analysis was conducted to generate latent variables, which represented the salinity and chemical characteristics of the soil. A machine learning algorithm (random forest) was applied to estimate soil attributes. Our results indicated that the integration of UAV texture and Sentinel-2B spectral data as random forest model inputs improved the accuracy of latent soil variable estimation. The remote sensing-based information from cropland (crop-based) had a higher accuracy compared to estimations performed on bare soil (soil-based). Therefore, the crop-based approach, along with the integration of UAV texture and Sentinel-2B data, is recommended for the quick assessment of soil comprehensive attributes.

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Insufficient and excessive N fertilizer input reduces maize root mass across soil types

Cited by 35 publications

References 82 publications

Growth and Fruit Yields of Greenhouse Tomato under the Integrated Water and Fertilizer by Moistube Irrigation

Growth and Fruit Yields of Greenhouse Tomato under the Integrated Water and Fertilizer by Moistube Irrigation

Cover crop and nitrogen rate management practices influence corn NDVI and nitrogen content

Quick Detection of Field-Scale Soil Comprehensive Attributes via the Integration of UAV and Sentinel-2B Remote Sensing Data

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