&lt;b&gt;Light interception, leaf area and biomass production as a function of the density of maize plants analyzed using mathematical models

Portes, Tomás de Aquino; Melo, Hyrandir Cabral de

doi:10.4025/actasciagron.v36i4.17892

Cited by 15 publications

(13 citation statements)

References 19 publications

(8 reference statements)

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“…It is known that LIR is related to biomass production—relatively high plant densities hasten canopy interception and increase yield (Portes and Melo, 2014), whereas solar radiation is not fully intercepted at relatively low plant densities (Atwell et al, 1999). Concurrently, relatively high plant densities do not allow light to reach lower shoot sections, triggering shoot elongation.…”

Section: Discussionmentioning

confidence: 99%

Optimization of Nitrogen Rate and Planting Density for Improving Yield, Nitrogen Use Efficiency, and Lodging Resistance in Oilseed Rape

et al. 2017

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Yield and lodging related traits are essential for improving rapeseed production. The objective of the present study was to investigate the influence of plant density (D) and nitrogen (N) rates on morphological and physiological traits related to yield and lodging in rapeseed. We evaluated Huayouza 9 for two consecutive growing seasons (2014–2016) under three plant densities (LD, 10 plants m−2; MD, 30 plants m−2; HD, 60 plants m−2) and four N rates (0, 60, 120, and 180 kg ha−1). Experiment was laid out in split plot design using density as a main factor and N as sub-plot factor with three replications each. Seed yield was increased by increasing density and N rate, reaching a peak at HD with 180 kg N ha−1. The effect of N rate was consistently positive in increasing the plant height, pod area index, 1,000 seed weight, shoot and root dry weights, and root neck diameter, reaching a peak at 180 kg N ha−1. Plant height was decreased by increasing D, whereas the maximum radiation interception (~80%) and net photosynthetic rate were recorded at MD at highest N. Lodging resistance and nitrogen use efficiency significantly increased with increasing D from 10 to 30 plants m−2, and N rate up to 120 kg ha−1, further increase of D and N decreased lodging resistance and NUE. Hence, our study implies that planting density 30 plants m−2 can improve yield, nitrogen use efficiency, and enhance lodging resistance by improving crop canopy.

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Section: Discussionmentioning

confidence: 99%

Optimization of Nitrogen Rate and Planting Density for Improving Yield, Nitrogen Use Efficiency, and Lodging Resistance in Oilseed Rape

et al. 2017

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“…The higher the LAI, the greater the IPAR, but from a certain increase in the leaf area the shading of the lower leaves of the plant can be intensified [13]. Thereby, there might be an energy imbalance in plants since the shaded structures spend energy in respiration, without producing through photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Grain Yield Differences of Soybean Cultivars Due to Solar Radiation Interception

Müller¹,

Rakocevic²,

Caverzan³

et al. 2017

AJPS

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Soybean [Glycine max (L.) Merr.] growth rate and grain yield are modified by the interception and solar radiation use efficiency. Thus, it is desirable that the most of plant photosynthetic structures intercepting solar radiation in order to have increment in carbon fixation and reflection on growth and yield. The goal of this study was to assess if soybean cultivars differ in grain yield in relation to solar radiation interception. Four soybean cultivars were evaluated at stages V6, V9, R2, R4, R6 and R8. To determine the photosynthetically active radiation interception by the canopy, the plants were divided into two parts (upper and lower strata). For grain yield components, the plants were divided into three parts (upper, middle and lower thirds). Of the photosynthetically active radiation intercepted by the vegetative canopy at the reproductive stages, the maximum observed intercept was 5.2% in the lower stratum of the plants. The number of infertile nodes increased in the lower third of plants due to low interception of solar radiation in this plant region. Thus, the soybean cultivars more efficient in intercepting photosynthetically active radiation inside the vegetative canopy showed higher grain yields.

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“…The short distance can induce the over population density so that the plant gets low light reception and has tight plant competition (Huang, Domec, Ward, Duman, Manoli, Parolari, & Katul, 2017;Fromme, Spivey, & Grichar, 2019). It can induce the low morphology trait, especially in corn as the C4 plant (Portes & Melo 2014). However, in this study, the planting distance has not the effect on all morphology traits.…”

Section: Resultsmentioning

confidence: 59%

Growth and Production of Corn in Various Planting Distances Systems

Padjung

Bdr

Nasaruddin

et al. 2020

ATJ

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Corn is one of the most important food commodities consumed by most people in various parts of the country. There is a real interaction between spacing varieties on the observed characters. There are one or more production chatacters that have a significant correlation with production. This research will be carried out at the Experimental Garden of the Bajeng Cereal Research Institute, Bajeng District, Gowa Regency, South Sulawesi, with a coordinate point of 5o18'21.5 "LS, 119o28'38.6" BT. The research was conducted from August to November 2020. This study used a separate plot experimental design. The main plot is a planting system legowo (S) which consists of 3 planting systems, namely the spacing of 75 x 20 cm = 66,667 pop / ha (J1), Legowo (50 + 100) x 20 cm = 66,667 population / ha (J2), and Legowo (50 + 100) x 18 cm = 74,074 population / ha (J3). Meanwhile, the subplots were maize varieties (V), namely NASA 29 (V1), Bisi 2 (V2), and Sinhas 1 (V3). From the research results, it can be concluded that the spacing has no effect on the character of the observation. the variety has a very significant effect on the observed character, except for rod diameter. As for the correlation, the observed characters that had an effect on production were ear length and weight of 1000 seeds

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<b>Light interception, leaf area and biomass production as a function of the density of maize plants analyzed using mathematical models

Cited by 15 publications

References 19 publications

Optimization of Nitrogen Rate and Planting Density for Improving Yield, Nitrogen Use Efficiency, and Lodging Resistance in Oilseed Rape

Optimization of Nitrogen Rate and Planting Density for Improving Yield, Nitrogen Use Efficiency, and Lodging Resistance in Oilseed Rape

Grain Yield Differences of Soybean Cultivars Due to Solar Radiation Interception

Growth and Production of Corn in Various Planting Distances Systems

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