Water and nitrate dynamics in baby corn ( Zea mays L.) under different fertigation frequencies and operating pressures in semi-arid region of India

2016 ◽  
Vol 163 ◽  
pp. 263-274 ◽  
Author(s):  
Mukesh Kumar ◽  
T.B.S. Rajput ◽  
Rohitashw Kumar ◽  
Neelam Patel
Keyword(s):  
Zea Mays ◽  
Arid Region ◽  
Zea Mays L ◽  
Semi Arid Region ◽  
Semi Arid

Applications of organic manure increased maize (Zea mays L.) yield and water productivity in a semi-arid region

2017 ◽  
Vol 187 ◽  
pp. 88-98 ◽  
Author(s):  
Xiaolin Wang ◽  
Yuanyuan Ren ◽  
Suiqi Zhang ◽  
Yinglong Chen ◽  
Nan Wang
Keyword(s):  
Zea Mays ◽  
Arid Region ◽  
Zea Mays L ◽  
Water Productivity ◽  
Organic Manure ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals VARIABILIDADE DA PRECIPITAÇÃO PLUVIAL E PRODUTIVIDADE DO MILHO NO SEMIÁRIDO BRASILEIRO ATRAVÉS DA ANÁLISE MULTIVARIADA

Nativa ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 77
Author(s):  
José Ricardo Ferreira Lopes ◽  
Milena Pereira Dantas ◽  
Francisco Edson Paulo Ferreira
Keyword(s):  
Zea Mays ◽  
Arid Region ◽  
Production Efficiency ◽  
Zea Mays L ◽  
Climatic Variability ◽  
Spatial Behavior ◽  
Corn Yield ◽  
Dry Land ◽  
Semi Arid Region ◽  
Semi Arid

A produtividade de diversas culturas agrícolas é intensamente dependente da oferta pluvial, bem como de sua frequência e intensidade, por isso, objetivou-se avaliar o comportamento espacial da precipitação e da produtividade do milho no semiárido brasileiro. Para isso foram utilizadas as técnicas da análise dos componentes principais (ACP) e a análise de correlação de Pearson das variáveis para o período de 1990 a 2014. Através dessas técnicas constatou-se a alta variabilidade dos dados em escala interanual, revelando as áreas mais propícias ao cultivo do milho, como também, as áreas com as menores produtividades e assim, mais afetadas pelo estresse hídrico. Na maior parte do território a produtividade do milho é inferior a 1000 kg ha-1. A variabilidade do rendimento do milho, nas últimas décadas, está intimamente relacionada com a variabilidade climática, haja vista que se trata de uma agricultura de subsistência e em sistema sequeiro. O efeito das chuvas sobre a produtividade do milho foi estatisticamente positivo, ou seja, na maior parte da região semiárida brasileira, a eficiência da produção do grão é dependente das precipitações pluviais locais.Palavras-chave: ACP, rendimento agrícola, Zea mays L. VARIABILITY OF RAINFALL AND YIELD OF MAIZE AT THE BRAZILIAN SEMIARID THROUGH MULTIVARIATE ANALYSIS ABSTRACT: The productivity of several agricultural crops is highly dependent on the rainfall supply, as well as their frequency and intensity. Therefore, the objective was to evaluate the spatial behavior of maize precipitation and yield in the Brazilian semi-arid region. The main components analysis (PCA) and Pearson's correlation analysis of the variables for the period from 1990 to 2014 were used. Through these techniques, the high variability of the data on a year-to-year scale was verified, revealing the most important areas. Propitious to maize cultivation, as well as areas with the lowest yields and thus, more affected by water stress. In most of the territory corn yield is less than 1000 kg ha-1. The variability of maize yield in the last decades is closely related to climatic variability, since it is subsistence agriculture and a dry land system. The effect of rainfall on maize productivity was statistically positive, that is, in most of the Brazilian semi-arid region, grain production efficiency is dependent on local rainfall.Keywords: PCA, crop yield, Zea mays L. 

The Molecular Characterization and Biological Assessment of the Leaves Extracts of Loofah Reveal their Nutraceutical Potential

2020 ◽  
Vol 11 ◽  
Author(s):  
Takoua Ben Hlel ◽  
Feten Belhadj ◽  
Fatih Gül ◽  
Muhammed Altun ◽  
Ayşe Şahin Yağlıoğlu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Hela Cell ◽  
Arid Region ◽  
Biological Properties ◽  
Biological Assessment ◽  
Omega 3 ◽  
Hela Cell Lines ◽  
Semi Arid Region ◽  
Semi Arid

Background:: Luffa cylindrica is a plant that is widely distributed in Africa and Asia and it can be grown in regions with tropical or subtropical climates. Few patents dealt with Loofah biological properties, including some functional foods formulated from its leaves. Objective:: This study aimed to structurally and functionally characterize the bioactive compounds of L. cylindrica leaves grown in two different environments. Methods:: The extracts of L. cylindrica leaves collected from two Tunisian locations: Essouasi (LE), a semi-arid region and Medenine (LM) an arid region, were investigated for their phenolic compounds and fatty acids using HPLC/TOF-MS and GCMS techniques respectively. Furthermore, the antioxidant capacity was evaluated with DPPH, Chelating effect, Hydroxyl radical and Superoxide anion scavenging activities while the anticancer activity against HeLa cell lines was assessed using xCELLigence real time cell analyzer and lactate dehydrogenase cytotoxicity assay. Results:: The antiproliferative capacity of both extracts was time and dose-dependent with LE presenting the lowest HeLa cell index (CI = 0.035 ± 0.018, 250 μg/ml). LE also showed the best cytotoxic capacity (56.49 ± 0.8%) and antioxidant potential (IC50 = 54.41 ± 1.12 μg/ml for DPPH and 12.12 ± 0.07 μg/ml for chelating effet). 14 phenolic compounds were detected in LE with ferulic acid being the major compound (5128.5 ± 4.09 μg Phenols/g) while LM had only 6 phenolics. GCMS analysis showed the presence of omega-3 fatty acids in LE. Conclusions:: Our findings suggest that L. cylindrica leaves, especially when collected from semi-arid regions, are promising for formulating nutraceuticals of interest.

Space-time monitoring of soil organic carbon content across a semi-arid region of Australia

2021 ◽  
Vol 24 ◽  
pp. e00367
Author(s):  
Patrick Filippi ◽  
Stephen R. Cattle ◽  
Matthew J. Pringle ◽  
Thomas F.A. Bishop
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Arid Region ◽  
Space Time ◽  
Organic Carbon Content ◽  
Soil Organic Carbon Content ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals Effect of Temperature on Sowing Dates of Wheat under Arid and Semi-Arid Climatic Regions and Impact Quantification of Climate Change through Mechanistic Modeling with Evidence from Field

Atmosphere ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 927
Author(s):  
Jamshad Hussain ◽  
Tasneem Khaliq ◽  
Muhammad Habib ur Rahman ◽  
Asmat Ullah ◽  
Ishfaq Ahmed ◽  
...  
Keyword(s):  
Climate Change ◽  
Grain Yield ◽  
Arid Region ◽  
Field Experiments ◽  
Climatic Conditions ◽  
Seasonal Temperature ◽  
Sowing Dates ◽  
Rcp 8.5 ◽  
Semi Arid Region ◽  
Semi Arid

Rising temperature from climate change is the most threatening factor worldwide for crop production. Sustainable wheat production is a challenge due to climate change and variability, which is ultimately a serious threat to food security in Pakistan. A series of field experiments were conducted during seasons 2013–2014 and 2014–2015 in the semi-arid (Faisalabad) and arid (Layyah) regions of Punjab-Pakistan. Three spring wheat genotypes were evaluated under eleven sowing dates from 16 October to 16 March, with an interval of 14–16 days in the two regions. Data for the model calibration and evaluation were collected from field experiments following the standard procedures and protocols. The grain yield under future climate scenarios was simulated by using a well-calibrated CERES-wheat model included in DSSAT v4.7. Future (2051–2100) and baseline (1980–2015) climatic data were simulated using 29 global circulation models (GCMs) under representative concentration pathway (RCP) 8.5. These GCMs were distributed among five quadrants of climatic conditions (Hot/Wet, Hot/Dry, Cool/Dry, Cool/Wet, and Middle) by a stretched distribution approach based on temperature and rainfall change. A maximum of ten GCMs predicted the chances of Middle climatic conditions during the second half of the century (2051–2100). The average temperature during the wheat season in a semi-arid region and arid region would increase by 3.52 °C and 3.84 °C, respectively, under Middle climatic conditions using the RCP 8.5 scenario during the second half-century. The simulated grain yield was reduced by 23.5% in the semi-arid region and 35.45% in the arid region under Middle climatic conditions (scenario). Mean seasonal temperature (MST) of sowing dates ranged from 16 to 27.3 °C, while the mean temperature from the heading to maturity (MTHM) stage was varying between 12.9 to 30.4 °C. Coefficients of determination (R2) between wheat morphology parameters and temperature were highly significant, with a range of 0.84–0.96. Impacts of temperature on wheat sown on 15 March were found to be as severe as to exterminate the crop before heading. The spikes and spikelets were not formed under a mean seasonal temperature higher than 25.5 °C. In a nutshell, elevated temperature (3–4 °C) till the end-century can reduce grain yield by about 30% in semi-arid and arid regions of Pakistan. These findings are crucial for growers and especially for policymakers to decide on sustainable wheat production for food security in the region.

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