scholarly journals Evaluation of light extinction coefficient, radiation use efficiency and grain yield of soybean genotypes

2014 ◽  
Vol 9 (2) ◽  
pp. 222-229 ◽  
Author(s):  
Ebadi Ali ◽  
Sajed Kamel ◽  
Gharib-Eshghi Amir
Keyword(s):  
Grain Yield ◽  
Extinction Coefficient ◽  
Radiation Use Efficiency ◽  
Light Extinction ◽  
Light Extinction Coefficient ◽  
Soybean Genotypes ◽  
Use Efficiency ◽  
Radiation Use

scholarly journals Determining the radiation use efficiency of potato using sunshine hour data: a simple and costless approach

2020 ◽  
Vol 18 (2) ◽  
pp. e0801
Author(s):  
Suman Samanta ◽  
Saon Banerjee ◽  
Asis Mukherjee ◽  
Pulak K. Patra ◽  
Pramiti K. Chakraborty
Keyword(s):  
Developing Countries ◽  
Field Experiments ◽  
Global Solar Radiation ◽  
Radiation Use Efficiency ◽  
Light Extinction ◽  
Study Region ◽  
Light Extinction Coefficient ◽  
Main Plot ◽  
Use Efficiency ◽  
Radiation Use

Aim of study: Radiation parameters and photoperiod influence potato biomass and tuber yield significantly. Lack of instrument facilities in developing countries is the main hindrance to estimate global solar radiation (GSR) and radiation use efficiency (RUE). Considering these facts, an experiment was conducted to estimate light extinction coefficient (K) and RUE using a simple but indirect approach that can be implied in any location lacking sophisticated instruments.Area of study: Field experiments were conducted in Kalyani, West Bengal, representing the Indo-Gangetic Plains.Material and methods: Angstrom-Prescott (A-P) equation was used to calculate GSR. The experiment was laid out in a split-plot design with three dates of planting (DOP), 15th Nov, 29th Nov and 13th Dec, as main plot treatment and three potato cultivars (ˈKufri Suryaˈ, ˈKufri Chandramukhiˈ and ˈKufri Jyotiˈ) as sub-plot treatment. Leaf area indices and K values were used to determine intercepted PAR (IPAR) as well as RUE.Main results: The cumulative IPAR from emergence to harvest ranged 246-429 MJ m-2 depending on planting time and varieties. Irrespective of DOPs, the highest mean RUE (4.19 g MJ-1) was calculated in ˈKufri Chandramukhiˈ, showing that it used the radiation more efficiently that the other two cultivars (ˈKufri Suryaˈ= 3.75 g MJ-1 and ˈKufri Jyotiˈ= 3.14 g MJ-1).Research highlights: Statistical indices confirmed that the A-P model can be reliably used in the study region for estimation of GSR. This simple way to estimating RUE using bright sunshine hours data can be used in developing countries, where costly radiation instruments are not available.

scholarly journals Tailoring parameter distributions to specific germplasm: impact on crop model-based ideotyping

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Livia Paleari ◽  
Ermes Movedi ◽  
Fosco Mattia Vesely ◽  
Roberto Confalonieri
Keyword(s):  
Radiation Use Efficiency ◽  
Light Extinction ◽  
Climate Change Scenarios ◽  
Rice Varieties ◽  
Light Extinction Coefficient ◽  
Crop Models ◽  
Use Efficiency ◽  
The Impact ◽  
Radiation Use

AbstractCrop models are increasingly used to identify promising ideotypes for given environmental and management conditions. However, uncertainty must be properly managed to maximize the in vivo realizability of ideotypes. We focused on the impact of adopting germplasm-specific distributions while exploring potential combinations of traits. A field experiment was conducted on 43 Italian rice varieties representative of the Italian rice germplasm, where the following traits were measured: light extinction coefficient, radiation use efficiency, specific leaf area at emergence and tillering. Data were used to derive germplasm-specific distributions, which were used to re-run a previous modelling experiment aimed at identifying optimal combinations of plant trait values. The analysis, performed using the rice model WARM and sensitivity analysis techniques, was conducted under current conditions and climate change scenarios. Results revealed that the adoption of germplasm-specific distributions may markedly affect ideotyping, especially for the identification of most promising traits. A re-ranking of some of the most relevant parameters was observed (radiation use efficiency shifted from 4th to 1st), without clear relationships between changes in rankings and differences in distributions for single traits. Ideotype profiles (i.e., values of the ideotype traits) were instead more consistent, although differences in trait values were found.

SEED-ORIENTED PLANTING IMPROVES LIGHT INTERCEPTION, RADIATION USE EFFICIENCY AND GRAIN YIELD OF MAIZE (Zea mays L.)

2016 ◽  
Vol 53 (2) ◽  
pp. 210-225 ◽  
Author(s):  
GUILHERME M. TORRES ◽  
ADRIAN KOLLER ◽  
RANDY TAYLOR ◽  
WILLIAM R. RAUN
Keyword(s):  
Grain Yield ◽  
Canopy Structure ◽  
Maize Yield ◽  
Light Interception ◽  
Plant Population ◽  
Radiation Use Efficiency ◽  
Seed Placement ◽  
Use Efficiency ◽  
The Difference ◽  
Radiation Use

SUMMARYSeed-oriented planting provides a manner to influence canopy structure. The purpose of this research was to improve maize light interception using seed-oriented planting to manipulate leaf azimuth across the row thereby minimizing leaf overlap. To achieve leaf azimuths oriented preferentially across the row, seeds were planted: (i) upright with caryopsis pointed down, parallel to the row (upright); and (ii) laying flat, embryo up, perpendicular to the row (flat). These treatments were compared to conventionally planted seeds with resulting random leaf azimuth distribution. Seed orientation effects were contrasted with three levels of plant population and two levels of hybrid specific canopy structures. Increased plant population resulted in greater light interception but yield tended to decrease as plant population increased. The planophile hybrid produced consistently greater yields than the erectophile hybrid. The difference between planophile and erectophile hybrids ranged from 283 to 903 kg ha−1. Overall, mean grain yield for upright and flat seed placement increased by 351 and 463 kg ha−1 compared to random seed placement. Greater cumulative intercepted photosynthetically active radiation (CIPAR) was found for oriented seeds rather than random-oriented seeds. At physiological maturity upright, flat and random-oriented seeds intercepted 555, 525 and 521 MJ m−2 of PAR, respectively. Maize yield responded positively to improved light interception and better radiation use efficiency. Under irrigated conditions, precision planting of maize increased yield by 9 to 14% compared to random-oriented seeds.

scholarly journals Higher Radiation Use Efficiency Produces Greater Biomass Before Heading and Grain Yield in Super Hybrid Rice

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 209
Author(s):  
Yonghui Pan ◽  
Shuai Gao ◽  
Kailiu Xie ◽  
Zhifeng Lu ◽  
Xusheng Meng ◽  
...  
Keyword(s):  
Grain Yield ◽  
Hybrid Rice ◽  
Rice Cultivar ◽  
Radiation Use Efficiency ◽  
Above Ground Biomass ◽  
Radiation Interception ◽  
Super Hybrid Rice ◽  
Use Efficiency ◽  
Fertilizer Rates ◽  
Radiation Use

To reveal the physiological mechanism underlying the yield advantage of super hybrid rice compared with inbred super rice, a super hybrid rice cultivar Yliangyou 3218 (YLY) and an inbred super rice cultivar Zhendao 11 (ZD) were field grown under five nitrogen (N) fertilizer rates in 2016 and 2017. The average grain yield of YLY across nitrogen fertilizer rates was 10.1 t ha−1 in 2016 and 9.7 t ha−1 in 2017, 29.6% and 21.3% higher than that of ZD in 2016 and 2017, respectively. YLY showed higher above-ground biomass accumulation, especially growth before heading, which was mainly due to its faster green leaf area index (GLAI) formation and greater maximum GLAI (GLAImax). The daily radiation interception (RIdaily) was 15.0% higher in YLY than ZD, but the accumulated radiation interception (RIacc) before heading showed little difference between them because ZD had a longer growth duration. The radiation use efficiency (RUE) of YLY before heading was 54.7% higher than that of ZD (YLY, 2.12 g MJ−1; ZD, 1.37 g MJ−1). Our result demonstrated that the yield advantage of YLY was due to its higher above-ground biomass before heading, which was mainly achieved by its improvement in RUE rather than radiation interception.

scholarly journals SEED-ORIENTED PLANTING IMRPROVES LIGHT INTERCEPTION, RADIATION USE EFFICIENCY AND GRAIN YIELD OF MAIZE (Zea mays L.) – CORRIGENDUM

2016 ◽  
Vol 53 (2) ◽  
pp. 226-226
Author(s):  
GUILHERME M. TORRES ◽  
ADRIAN KOLLER ◽  
RANDY TAYLOR ◽  
WILLIAM R. RAUN
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Light Interception ◽  
Radiation Use Efficiency ◽  
Use Efficiency ◽  
Radiation Use

This article was published with an incorrect Title. The correct title should read:‘SEED-ORIENTED PLANTING IMPROVES LIGHT INTERCEPTION, RADIATION USE EFFICIENCY AND GRAIN YIELD OF MAIZE (Zea mays L.)’The original article has been rectified with the correct title and a footnote detailing the error has been inserted in the online PDF and HTML copies.

scholarly journals Biomass accumulation and radiation use efficiency of winter wheat under deficit irrigation regimes

2009 ◽  
Vol 55 (No. 2) ◽  
pp. 85-91 ◽  
Author(s):  
Q. Li ◽  
M. Liu ◽  
J. Zhang ◽  
B. Dong ◽  
Q. Bai
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Deficit Irrigation ◽  
Biomass Accumulation ◽  
Growing Season ◽  
Radiation Use Efficiency ◽  
Area Index ◽  
Irrigation Regimes ◽  
Use Efficiency ◽  
Radiation Use

To better understand the potential for improving biomass accumulation and radiation use efficiency (RUE) of winter wheat under deficit irrigation regimes, in 2006–2007 and 2007–2008, an experiment was conducted at the Luancheng Experimental Station of Chinese Academy of Science to study the effects of deficit irrigation regimes on the photosynthetic active radiation (PAR), biomass accumulation, grain yield, and RUE of winter wheat. In this experiment, field experiment involving winter wheat with 1, 2 and 3 irrigation applications at sowing, jointing, or heading stages was conducted, and total irrigation water was all controlled at 120 mm. The results indicate that irrigation 2 or 3 times could help to increase the PAR capture ratio in the later growing season of winter wheat; this result was mainly due to the changes in the vertical distributions of leaf area index (LAI) and a significant increase of the LAI at 0–20 cm above the ground surface (LSD, <i>P</i> < 0.05). Compared with irrigation only once during the growing season of winter wheat, irrigation 2 times significantly (LSD, <i>P</i> < 0.05) increased aboveground dry matter at maturity; irrigation at sowing and heading or jointing and heading stages significantly (LSD, <i>P</i> < 0.05) improved the grain yield, and irrigation at jointing and heading stages provided the highest RUE (0.56 g/mol). Combining the grain yield and RUE, it can be concluded that irrigation at jointing and heading stages has higher grain yield and RUE, which will offer a sound measurement for developing deficit irrigation regimes in North China.

Radiation use efficiency, biomass production and grain yield of heat tolerant summer maize (Zea mays L.) hybrids in subtropical environment

2021 ◽  
Vol 50 (1) ◽  
pp. 171-177
Author(s):  
K Subrahmanyam ◽  
MR Umesh ◽  
N Ananda ◽  
Prakash H Kuchanur ◽  
MY Ajayakumar ◽  
...  
Keyword(s):  
Grain Yield ◽  
Biomass Production ◽  
Radiation Use Efficiency ◽  
Mild Stress ◽  
Summer Maize ◽  
Yield Attributes ◽  
Irrigation Regimes ◽  
Use Efficiency ◽  
Heat Tolerant ◽  
Radiation Use

Radiation use efficiency (RUE), heat use efficiency (HUE), biomass production and grain yield of contrasting heat tolerant summer maize hybrids and irrigation regimes during hot summer in subtropics of India were assessed. Experiment was conducted with RCRMH-1, RCRMH-2 and Arjun hybrids under well-watered based on 1.0 IW/CPE (I1), mild stress at 0.75 IW/CPE (I2) and severe stress at 0.5 IW/CPE (I3). Results indicated that RCRMH-2 outyielded 13.3 and 26.4% over RCRMH1 and Arjun, respectively. In well-watered (I1) plots all the hybrids performed better than other irrigation regimes I2 and I3. Among hybrids RCRMH-2 showed lower grain yield reduction under water stress condition. While RUE of RCRMH-2 under I1, I2 and I3 were 1.93, 1.72 and 1.53 g/MJ, respectively. It also showed higher biomass production, LAI and HUE over rest of the hybrids. Radiation, water and heat use efficiencies, yield attributes and yield were higher in January sown plants.

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