Nitrogen and density influences on silk emergence, endosperm development, and grain yield in maize (Zea mays L.)

Lemcoff, Jorge Hugo; Loomis, R. S.

doi:10.1016/0378-4290(94)90001-9

Cited by 72 publications

(63 citation statements)

References 23 publications

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“…Such cases represent intense interplant competition for incident photosynthetic photon flux density, soil nutrients and soil water. This results in limited supplies of carbon and nitrogen and consequent increases in barrenness and decreases in kernel number per plant and kernel size (LEMCOFF & LOOMIS, 1994).…”

Section: High Plant Populations Ear Development and Yield Restrictiomentioning

confidence: 99%

“…Plant population influences synchrony of flowering and hence grain yield. High plant densities may reduce the supply of nitrogen (LEMCOFF & LOOMIS, 1994), photosynthates (JACOBS & PEARSON, 1991) and water (WESTGATE, 1994) to the growing ear. Restrictions in carbon or nitrogen metabolism and drought stress may delay specific developmental events and reduce both spikelet number and silk extrusion, contributing to decrease the number of spikelets that can be fertilized through coincidence of pollen shed with silking of individual spikelets (JACOBS & PEARSON, 1991).…”

Section: Spikelet Fertilizationmentioning

confidence: 99%

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Understanding Plant Density Effects on Maize Growth and Development: An Important Issue to Maximize Grain Yield

2001

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Section: High Plant Populations Ear Development and Yield Restrictiomentioning

confidence: 99%

Section: Spikelet Fertilizationmentioning

confidence: 99%

Understanding Plant Density Effects on Maize Growth and Development: An Important Issue to Maximize Grain Yield

2001

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“…Among, the fertilized plots, plants at harvest was higher in plots where soil is amended with FYM as well as N compared to sole application of FYM. This difference could be related to the sufficient availability of both micro nutrients and N at early as well as latter stage of crop growth [21].…”

Section: Plant At Harvestmentioning

confidence: 99%

“…However, the gains per cob were greater in fertilized plots compared to control plot ( Figure 1). The availability of nutrient [21] and water [19] at critical stages, i.e., grain development in manure plots could be the possible reason for improve grains per cob in manure plots compared to control plots.…”

Section: Grains Per Cobmentioning

confidence: 99%

“…More specifically, the higher grain yield was obtained in plots having higher level of mixed FYM and N ( Figure 2). This increment due to increased levels of N could be associated with availability of optimum nutrient [19,21] or could be due to higher average leaf area index, crop growth indices, and yield attributes of cereal crops [26] in fertilized plots. The combined use of FYM and N might have increased the soil water content, improved nutrient availability, and more protection from erosion as compared with the control treatments [19,24] which could have improved growth and yield of maize.…”

Section: Grain Yieldmentioning

confidence: 99%

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A Sustainable Approach toward Maize Production: Effectiveness of Farm Yard Manure and Urea N

Khan¹,

Afridi²,

Airf³

et al. 2017

Ann Bio Sci

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Yield response of maize hybrids with different ear flex to nitrogen rate and plant density

DeBruin,

Hensley,

Underwood

et al. 2023

Agronomy Journal

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Maize (Zea mays L.) hybrids are frequently labeled as fixed or flex hybrid ear types by seed companies based on pre‐commercial trials or field observations during commercialization. However, the underlying physiological cause and the associated management with each hybrid ear type remains a question for growers. Experiments were conducted at multiple locations across three years to determine the yield and yield component response to combinations of plant density (4, 6, 8, 10, and 12 pl m−2) and N rate (0, 78, 159, 235, and 314 kg N ha−1) for three fixed and four flex hybrid ear types. Optimal plant density (OPD) to reach maximum yield was 1.7 pl m−2 greater for fixed hybrid ear type compared to the flex hybrid ear type for N rates greater than 78 kg N ha−1. Flex hybrid ear type achieved similar yield at lower OPD through increased kernel weight (KW) without reduced kernels per square meter. Potential kernel number at silk appearance and established kernels 15 days after silk appearance were similar between hybrid ear types, indicating that the flex component was driven by KW. Fixed hybrid ear type displayed a lower threshold value of total aboveground biomass per plant at physiological maturity to set kernels compared to a flex hybrid ear type. Selection of a flex hybrid ear type provides opportunity for reduced planting density with similar yield potential and N management practices.This article is protected by copyright. All rights reserved

show abstract

Nitrogen and density influences on silk emergence, endosperm development, and grain yield in maize (Zea mays L.)

Cited by 72 publications

References 23 publications

Understanding Plant Density Effects on Maize Growth and Development: An Important Issue to Maximize Grain Yield

Understanding Plant Density Effects on Maize Growth and Development: An Important Issue to Maximize Grain Yield

A Sustainable Approach toward Maize Production: Effectiveness of Farm Yard Manure and Urea N

Yield response of maize hybrids with different ear flex to nitrogen rate and plant density

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