Developing a dynamic yield and growth model for maize under various water and nitrogen regimes

Bagheri, Somayeh; Sepaskhah, Ali Reza; Razzaghi, Fatemeh; Zand‐Parsa, Shahrokh

doi:10.1080/03650340.2013.873121

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…The logistic function was originally proposed by ecologists to describe the laws of biological population growth and has subsequently been used in modeling plant height growth, leaf area expansion, and grain filling (Zahedi and Jenner, 2003 ; Bagheri et al, 2014 ; Liu Y. H. et al, 2020 ). The logistic growth function was used here to analyze the change in plant height, basal diameter, new shoot length, and crown width:

where, H, D, S, and C represent plant height (cm), basal diameter (mm), new shoot length (cm), and crown width (cm 2 ) respectively; H m , D m , S m , and C m represent maximum plant height (cm), maximum basal diameter (mm), maximum new shoot length (cm), and maximum crown width (cm 2 ), respectively; a 1 , a 2 , b 1 , b 2 , c 1 , c 2 , d 1 , and d 2 are empirical parameters, and t is the number of days after planting (day).…”

Section: Methodsmentioning

confidence: 99%

“…The logistic function was originally proposed by ecologists to describe the laws of biological population growth and has subsequently been used in modeling plant height growth, leaf area expansion, and grain filling (Zahedi and Jenner, 2003;Bagheri et al, 2014;Liu Y. H. et al, 2020). The logistic growth function was used here to analyze the change in plant height, .…”

Section: Description Of the Logistic Functionmentioning

confidence: 99%

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Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

et al. 2022

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Freshwater resources in arid areas are scarce, while there are abundant brackish water reserves that have great application potential for the irrigation of desert plants. However, brackish water irrigation will lead to soil salinization, which will inhibit plant growth. Magnetized water is a new technology that makes the use of brackish water feasible. The present study assessed the effects of irrigation using three water types (fresh, brackish, and magnetized brackish water) and five irrigation amounts (W1, 81 mm; W2, 108 mm; W3, 135 mm; W4, 162mm; and W5, 189 mm) on soil salinity and Haloxylon ammodendron seedling growth. Compared with fresh water, brackish water irrigation inhibited the growth of H. ammodendron and reduced water consumption. Irrigation with magnetized brackish water effectively improved the effect of soil salt leaching, promoted the growth and water absorption of H. ammodendron roots, and stimulated the growth of plant height, basal diameter, shoot length, and crown width. Based on the principal component analysis, the first three treatments of H. ammodendron comprehensive growth state were FW4, FW3, and MBW4, respectively. This showed that magnetized brackish water combined with an appropriate irrigation amount was helpful to optimize the growth of H. ammodendron seedlings on the basis of fresh water saving. Therefore, magnetized brackish water irrigation is an effective strategy for ensuring the establishment and growth of H. ammodendron seedlings in arid and water-deficient areas.

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Section: Methodsmentioning

confidence: 99%

“…The logistic function was originally proposed by ecologists to describe the laws of biological population growth and has subsequently been used in modeling plant height growth, leaf area expansion, and grain filling (Zahedi and Jenner, 2003;Bagheri et al, 2014;Liu Y. H. et al, 2020). The logistic growth function was used here to analyze the change in plant height, .…”

Section: Description Of the Logistic Functionmentioning

confidence: 99%

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

et al. 2022

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“…Although GlnLux glutamine was demonstrated in this study to reflect N status at various points in the growing season, integration with other measures/models [34][35][36][37][38][39][40][41][42] is required to generate an estimation of N requirement, and prescribe a mid-season application rate. The results of this study displayed consistent correlation of GlnLux glutamine with end-season yield, but in the future it may be interesting to test the leaf lamina instead of the midrib.…”

Section: Potential Of Leaf Gln and Glnlux As Tools For Field Researchmentioning

confidence: 99%

Mid-Season Leaf Glutamine Predicts End-Season Maize Grain Yield and Nitrogen Content in Response to Nitrogen Fertilization under Field Conditions

et al. 2017

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Abstract:After uptake in cereal crops, nitrogen (N) is rapidly assimilated into glutamine (Gln) and other amino acids for transport to sinks. Therefore Gln has potential as an improved indicator of soil N availability compared to plant N demand. Gln has primarily been assayed to understand basic plant physiology, rather than to measure plant/soil-N under field conditions. It was hypothesized that leaf Gln at early-to-mid season could report the N application rate and predict end-season grain yield in field-grown maize. A three-year maize field experiment was conducted with N application rates ranging from 30 to 218 kg ha −1 . Relative leaf Gln was assayed from leaf disk tissue using a whole-cell biosensor for Gln (GlnLux) at the V3-V14 growth stages. SPAD (Soil Plant Analysis Development) and NDVI (Normalized Difference Vegetation Index) measurements were also performed. When sampled at V6 or later, GlnLux glutamine output consistently correlated with the N application rate, end-season yield, and grain N content. Yield correlation outperformed GreenSeeker TM NDVI, and was equivalent to SPAD chlorophyll, indicating the potential for yield prediction. Additionally, depleting soil N via overplanting increased GlnLux resolution to the earlier V5 stage. The results of the study are discussed in the context of luxury N consumption, leaf N remobilization, senescence, and grain fill. The potential and challenges of leaf Gln and GlnLux for the study of crop N physiology, and future N management are also discussed.

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Nitrogen uptake kinetics of key staple cereal crops in different agro-ecological regions of the world

Agyin‐Birikorang

Fugice

Singh

et al. 2017

Journal of Plant Nutrition

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Developing a dynamic yield and growth model for maize under various water and nitrogen regimes

Cited by 3 publications

References 18 publications

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

Field irrigation using magnetized brackish water affects the growth and water consumption of Haloxylon ammodendron seedlings in an arid area

Mid-Season Leaf Glutamine Predicts End-Season Maize Grain Yield and Nitrogen Content in Response to Nitrogen Fertilization under Field Conditions

Nitrogen uptake kinetics of key staple cereal crops in different agro-ecological regions of the world

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