Effect of Foliar Application of Methanol on Changes of Antioxidant Enzymes of Vigna unguiculata L. in Water-Deficit Stress

The aim of this study was to investigate the effect of foliar application of methanol on the activity of antioxidant enzymes of Vigna unguiculata L. in water-deficit stress conditions. The trials were performed in a split plot design arranged in completely randomized block design with three replications in two years cultivation (2017 and 2018). Water-deficit stress treatments were considered in the main plots in four levels (25, 50, 75 and 100% of plant water requirement) and combined foliar application of methanol treatment in three levels (control, 10 and 20% vol.), and genotype treatment in two cultivars of Omidbakhsh 1057 and Mashhad in sub plots. The results showed that the effect of water-deficit stress and foliar application of methanol on the activity of antioxidant enzymes were significant (P £ 0.01). The effect of genotype on the activity of ascorbate peroxidase was just significant (P £ 0.01).

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Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Acta agriculturae Slovenica ◽

10.14720/aas.2016.107.2.11 ◽

2016 ◽

Vol 107 (2) ◽

pp. 385 ◽

Cited By ~ 17

Author(s):

Hamid Mohammadi ◽

Mohammad Esmailpour ◽

Ali GHERANPAYE

Keyword(s):

Water Deficit ◽

Foliar Application ◽

Block Design ◽

Membrane Damage ◽

Morphological Characteristics ◽

Dry Mass ◽

Water Deficit Stress ◽

Malondialdehyde Content ◽

Randomized Complete Block Design ◽

Nano Titanium Dioxide

Water-deficit stress is the most important environmental factors limiting plant growth, and production. Nano-titanium dioxide (nano anataseTiO2) can have various profound effects on the crop physiological, biochemical and morphological characteristics. In the present research, the influences of different concentrations ofTiO2 nanoparticles (NPs) (0, 10 and 40 ppm) and water-deficit stress on Dragonhead (Dracocephalum moldavica L.) were investigated in a factorial experiment based on randomized complete block design with three replications. Results showed that under normal irrigation, foliar application of 10 ppm TiO2 NPs increased plant shoot dry mass and essential oils content. Under water-deficit stress condition, plants treated with 10 ppm TiO2 NPs had more proline and much less H2O2 and malondialdehyde content as compared to untreated plants. Therefore, it can be concluded that proper concentration of TiO2 NPs probably can be used as an exogenous stimuli for improvement of shoot growth and essential oil content in plants. Furthermore, water-deficit stress-induced damages such as oxidative stress and membrane damage can be ameliorated by foliar application of TiO2 NPs at appropriate concentrations.

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EFFECT OF SALICYLIC AND HUMIC ACID ON VINCRISTINE AND N, P, K CONTENT IN MADAGASCAR PERIWINKLE LEAVES

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v47i2.600 ◽

2016 ◽

Vol 47 (2) ◽

Author(s):

Jaddo & Rabee

Keyword(s):

Salicylic Acid ◽

Humic Acid ◽

Catharanthus Roseus ◽

Foliar Application ◽

Block Design ◽

Experimental Unit ◽

Madagascar Periwinkle ◽

Randomized Block Design ◽

Two Factors ◽

Four Levels

An Experiment carried out in Al-Yarmook Area in Baghdad for the growing season 2014 to study the effects of foliar application of Salicylic acid and Humic acid on Vincristine and NPK content in Catharanthus roseus. A factorial experiment was applied including two factors according to The Complete Randomized Block Design, the first factor included four levels of salicylic acid 0, 25, 50, and 100 mg.L-1 which were represented with S0, S1, S2, and S3 sequentially, the second factor included three levels of Humic acid 0, 0.75, and 1.5 ml.L-1 and were represented with O0, O1, and O2 sequentially to make up 12 factors in total that were distributed randomly upon three replicates and each experimental unit included 8 plants. The results were analyzed using Genestat and the differences were tested according to (LSD) with a level of probability 5% and the results were as follows: Vincristine levels increased in the leaves of Catharanthus roseus as a result of foliar application of Salicylic acid and Humic as well NPK levels in leaves. Vinblastine was not detected in all treatments. The interaction effect between 100 mg.L-1 Salicylic acid and 1.5 ml.L-1Humic acid had an exceeding effect for all the studied parameters. It may be concluded that Salicylic and Humic acid may be used to increase Vincristine alkaloid content in Periwinkle plants at the levels 100 ml.L-1 and 1.5 mg.L-1 subsequently.

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ESTRATÉGIAS DE IRRIGAÇÃO COM DÉFICIT HÍDRICO NOS ESTÁDIOS FENOLÓGICOS DO FEIJÃO-CAUPI SOB ADUBAÇÃO POTÁSSICA

Irriga ◽

10.15809/irriga.2021v26n1p111-122 ◽

2021 ◽

Vol 26 (1) ◽

pp. 111-122

Author(s):

Lauriane Almeida dos Anjos Soares ◽

Thamara Layse Freitas Medeiros ◽

Victoria Cristina Gomes Colman ◽

Irlan Victor de Sousa Palmeira ◽

Idelvan José da Silva ◽

...

Keyword(s):

Water Deficit ◽

Vigna Unguiculata ◽

Arid Regions ◽

Block Design ◽

Management Strategies ◽

Phenological Stages ◽

Randomized Block Design ◽

Management Of Resources ◽

Pod Length ◽

E Mail

ESTRATÉGIAS DE IRRIGAÇÃO COM DÉFICIT HÍDRICO NOS ESTÁDIOS FENOLÓGICOS DO FEIJÃO-CAUPI SOB ADUBAÇÃO POTÁSSICA LAURIANE ALMEIDA DOS ANJOS SOARES1; THAMARA LAYSE FREITAS MEDEIROS2; VICTORIA CRISTINA GOMES COLMAN3; IRLAN VICTOR DE SOUSA PALMEIRA4; IDELVAN JOSÉ DA SILVA5 E ROMULO CARANTINO LUCENA MOREIRA6 1 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 2 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 3 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 4 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected] 5 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected] 6 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 -Universitário, Campina Grande, PB, Brasil. E-mail: [email protected] 1 RESUMO Palavras-chave: Vigna unguiculata L., tolerância à seca, nutrição mineral SOARES, L. A. dos A.; MEDEIROS, T. L. F.; COLMAN, V. C. G.; PALMEIRA, I. V. de S.; SILVA, I. J. da; MOREIRA, R. C. L. IRRIGATION STRATEGIES WITH WATER DEFICIT IN THE PHENOLOGICAL STAGES OF THE COWPEA UNDER POTASSIC FERTILIZATION 2 ABSTRACT In semi-arid regions, water deficiency is the main environmental factor that influences the yield of plants, in these regions the proper management of resources is essential in order to guarantee the sustainability of the production system. Thus, this study aimed to evaluate the morphology and phytomass partition of cowpea (Vigna unguiculata L.), to cultivate BRS Marataoã, when submitted to water deficit management strategies in different phenological stages of the crop and fertilization doses potassium. A randomized block design was used, in a 5 x 5 factorial scheme, with three replications, with the treatments being defined according to the five potassium fertilization doses (50, 75, 100, 125, and 150% of K2O) associated with five water deficit management strategies at the different phenological stages of the crop. The application of water deficit associated with potassium doses favored the growth and accumulation of phytomass in the flowering phase. Increasing doses of potassium when associated with water deficit in the flowering and fruiting stages compromise the number of pods and pod length. In the early stages of the development of cowpea, irrigation with water deficit can be applied without significant losses in the production components. Keywords: Vigna unguiculata L., drought tolerance, mineral nutrition

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RENDIMENTO DE ROSAS CULTIVADAS EM AMBIENTE PROTEGIDO SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO

Irriga ◽

10.15809/irriga.2016v21n1p14-24 ◽

2018 ◽

Vol 21 (1) ◽

pp. 14

Author(s):

Eduardo Carvalho Oliveira ◽

Jacinto De Assunção Carvalho ◽

Elka Fabiana Aparecida Almeida ◽

Fátima Conceição Rezende ◽

Simone Novaes Reis ◽

...

Keyword(s):

Water Deficit ◽

Block Design ◽

Irrigation Management ◽

Agricultural Practices ◽

Water Deficit Stress ◽

Cut Flowers ◽

Water Pumping ◽

Randomized Block Design ◽

Biometric Quality ◽

E Mail

RENDIMENTO DE ROSAS CULTIVADAS EM AMBIENTE PROTEGIDO SOB DIFERENTES NÍVEIS DE IRRIGAÇÃO EDUARDO CARVALHO OLIVEIRA1; JACINTO DE ASSUNÇÃO CARVALHO1; FÁTIMA CONCEIÇÃO REZENDE1; ELKA FABIANA APARECIDA ALMEIDA2; SIMONE NOVAES REIS2 E SÔNIA NAOMI MIMURA2 1Universidade Federal de Lavras, Departamento de Engenharia, Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras, MG. e-mail: [email protected], [email protected], [email protected] de Pesquisa Agropecuária de Minas Gerais, Unidade Regional EPAMIG Sul de Minas, Av. Visconde do Rio Preto, s/n, Vila São Paulo, CEP: 36.301-360, São João Del Rei, MG. e-mail: [email protected], [email protected], [email protected] 1 RESUMO A floricultura de corte tem nas rosas a sua principal exploração no Brasil e possui vasta demanda por pesquisas voltadas à produtividade e qualidade de hastes florais associadas ao adequado manejo da irrigação. Além disso, o manejo correto da irrigação está relacionado à utilização de práticas agrícolas adequadas, as quais se justificam com a redução de insumos como água, energia de bombeamento e fertilizantes. Assim, este trabalho objetivou avaliar o efeito de diferentes potenciais de água no solo sobre o rendimento e qualidade biométrica de hastes de rosas. O experimento foi realizado em casa de vegetação localizada na EPAMIG, em São João Del Rei - MG. Foi utilizado um delineamento em blocos casualizados, envolvendo seis potenciais de água no solo (-15, -30, -45, -60, -90 e -120 kPa) com cinco repetições. Os parâmetros avaliados foram: produtividade, comprimento e diâmetro das hastes e comprimento e diâmetro do botão floral. De forma geral, o déficit hídrico de até -120 kPa não interfere nas características qualitativas das hastes florais. Maiores produtividades são observadas para irrigações mais frequêntes, com -15 e -30 kPa. Palavras-chave: floricultura, roseira, qualidade, manejo da irrigação, déficit hídrico. OLIVEIRA, E. C.; CARVALHO, J. de A.; REZENDE, F. C.; ALMEIDA, E. F. A.; REIS, S. N.; MIMURA, S. N.ROSE YIELD CULTIVATED IN PROTECTED ENVIRONMENT UNDER DIFFERENT IRRIGATION LEVELS 2 ABSTRACT Roses lead exploitation of cut flowers in Brazil and demand. The present research focused on flower stems productivity and quality associated to adequate irrigation management. Moreover, the correct management of irrigation is related to the use of appropriate agricultural practices, which are justified by reducing inputs such as water, pumping energy and fertilizers. This work had the aim of assessing the effect of water deficit stress across different soil water potentials on yield and biometric quality of stems roses. The experiment was conducted in a greenhouse located at EPAMIG, São João Del Rei, MG. A randomized block design involving six water potential on soil (-15, -30, -45, -60, -90 and -120 kPa) with five replications was used. Parameters assessed were: yield, length and diameter of the stems, length and diameter of the rose bud. In general, the water deficit of up to -120 kPa does not interfere with qualitative parameters of the stem buds. Higher yields are observed for more frequent irrigations, with -15 and -30 kPa. Keywords: floriculture, rosebush, quality, irrigation management, water deficit.

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Effects of glycine betaine on plant growth and performance of Medicago sativa and Vigna unguiculata under water deficit conditions

Journal of Phytology ◽

10.25081/jp.2020.v12.6098 ◽

1970 ◽

pp. 1-8

Author(s):

Hanan Kamal Khadouri ◽

Karthishwaran Kandhan ◽

Mohammed Abdul Salem

Keyword(s):

Drought Stress ◽

Medicago Sativa ◽

Water Deficit ◽

Vigna Unguiculata ◽

Glycine Betaine ◽

Growth Parameters ◽

Block Design ◽

Foliar Spray ◽

Mineral Nutrients ◽

Randomized Block Design

Managing water consumption of the crops is one of the strategies which have been adopted locally and worldwide in current trends of sustainable agriculture. In addition to the low level of water resources in UAE because of the rare precipitation, no fresh, free-flowing water, rivers, lakes or streams. The present study was aimed to evaluate the effects of exogenous Glycine Betaine (GB) on Alfalfa (Medicago sativa) and Cowpea (Vigna unguiculata) within different levels of drought stress. A pot experiment was designed on a completely randomized block design (CRBD) with three replicates. Exogenous GB was applied as a foliar spray in three levels (0,100 and 200 ppm) five times with five days intervals. Drought stress starts within the second GB treatment in three levels (24h: 100% well-watered), (48h: 60% water deficit) and (72h: 40% water deficit) depending on the required quantity. Growth characteristics, pigment concentrations, biochemical content and Mineral nutrients levels were measured in response to the treatment variables. Results showed that the GB has a significant increment in Growth parameters, biochemical contents, and Mineral nutrients concentrations. The results of the present investigation suggested that the exogenous application of GB was improved the drought tolerance in Cowpea and has enhanced the Alfalfa performance under drought stress in both concentrations 100 and 200 ppm under drought stress of 60% of irrigations water. In due of comparison of Cowpea and Alfalfa, it’s found from this study that GB has a better effect on the Cowpea under drought stress than Alfalfa.

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Amelioration of drought stress in black matpe bean (Vigna mungo L.) by foliar application of potassiu

Indian Journal of Agricultural Research ◽

10.18805/ijare.a-5173 ◽

2019 ◽

Author(s):

Rajnish Kumar ◽

Swati Shahi ◽

Malvika Srivastava

Keyword(s):

Water Stress ◽

Water Deficit ◽

Foliar Application ◽

Sugar Content ◽

Reducing Sugar ◽

Water Deficit Stress ◽

Ameliorative Effect ◽

Four Levels ◽

Physiological And Biochemical

Growth, physiological and biochemical activities of black matpe bean grown in pot cultures were evaluated to recognize the ameliorative role of potassium against the deleterious effects of water deficit. Black matpe plants were subjected to four levels of water stress (400 ml, 200 ml, 100 ml and 50 ml). The control plants were supplied with 500 ml of water at regular intervals. Potassium was applied in form of 200 ppm KCl and KNO3. Plants were under observation starting from 25 upto 55 days of plant growth at 10-day interval for each treatment. Water deficit stress reduced biomass, leaf area and RWC and provoked oxidative stress in plants as confirmed by considerable increase in electrolyte leakage, proline and reducing sugar content. Foliar application of KCl and KNO3 improved all these attributes under water stress. The ameliorative effect might be maintained through decrease in proline and increase in reducing sugar content. Increased reducing sugar content in K treated plants may have a significant role in osmotic adjustment.

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Accumulation of macronutrients in cowpea and weeds in competition and under soil water deficit

Bioscience Journal ◽

10.14393/bj-v35n6a2019-42432 ◽

2019 ◽

Vol 35 (6) ◽

Author(s):

Fernando Sarmento de Oliveira ◽

Erivanessa Costa Sousa Sarmento ◽

Jeferson Luiz Dallabona Dombroski ◽

Daniel Valadão Silva ◽

Claudia Daianny Melo Freitas ◽

...

Keyword(s):

Soil Water ◽

Water Deficit ◽

Plant Species ◽

Vigna Unguiculata ◽

Block Design ◽

High Potential ◽

Soil Water Deficit ◽

Commelina Benghalensis ◽

Randomized Block Design ◽

Nutrient Extraction

The ability of a plant species to succeed in colonization of agroecosystem depends on its efficiency in the use of growth resources even in deficient conditions. The present study aimed to evaluate the effects of competition and water deficit in the soil on the accumulation of macronutrients of Vigna unguiculata L. Walp., Commelina benghalensis L. and Waltheria indica L. The study was conducted in a greenhouse, in randomized block design, with four replications. The treatments were arranged in a 5 × 2 factorial, with the first factor corresponding to types of interaction among species (V. unguiculata + C. benghalensis; V. unguiculata + W. indica; V. unguiculata in monoculture, C. benghalensis in monoculture and W. indica in monoculture), and the second of water regimes (irrigated and water deficit). The water deficit differently affects macronutrient content on the species, with decreased of K, Ca and Mg in cowpea, and N, P, K and Ca in W. indica. For C. benghalensis, the water deficit does not reduce the macronutrient contents on the plant. The competition between plants intensifies the effects of water deficit only on C. benghalensis, with a decreased on the content of all macronutrients studied. Under irrigated conditions, competition between plants was more damaging the weeds compared to cowpea. The C. benghalensis specie, free from interference, has a high potential for nutrient extraction under irrigated and water deficit regimes.

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Analisis Pertumbuhan dan Produksi Kedelai yang Diberi Perlakuan dengan Ekstrak Sentang (Azadirachta excelsa (Jack)) dan Mindi (Melia azedarach L.)

Journal of Tropical Silviculture ◽

10.29244/j-siltrop.11.3.163-169 ◽

2020 ◽

Vol 11 (3) ◽

pp. 163-169

Author(s):

Rummi Azahra Gumilar ◽

Nurheni Wijayanto ◽

Arum Sekar Wulandari

Keyword(s):

Block Design ◽

Dry Weight ◽

Agroforestry System ◽

Melia Azedarach ◽

Randomized Block Design ◽

Main Plot ◽

Growth Production ◽

Soybean Plants ◽

Four Levels ◽

Plot Design

Allelopathy interaction can occur between A. excelsa or M. azedarach with soybean plants which is planted as intercrops in agroforestry system. The objectives of this study were to analyze the effect of root, leaf, and twig ectracts of A. excelsa and M. azedarach on growth and production of soybean. This study was conducted in open fields using a split-split plot design inside randomized block design. The main plot was the plant species as extract materials consisted of Azadirachta excelsa and Melia Azedarach. The subplot was the part of the plant consisted of root, leaf, and twig. Sub-subplot was the concentration of the extract consisted of four levels, 0% (control), 1.25%, 2.5%, and 5%. Each treatment was repeated for 3 time. Result of this study showed that the root, leaf and twig extracts of A. excelsa and M. azedarach did not give significant effect to the height growth, dry weight, as well as soybean production. Key words: agroforestry, allelopathy, growth, production

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Foliar silicate fertilization assessment on bean development and its water deficit stress tolerance

Scientia Agraria Paranaensis ◽

10.18188/sap.v20i1.26076 ◽

2021 ◽

pp. 38-44

Author(s):

Valeria Pohlmann ◽

Bruno Moreira Pereira ◽

Alberto Eduardo Knies ◽

Marcondes Lazzari ◽

Diego Portalanza ◽

...

Keyword(s):

Water Deficit ◽

Dry Matter ◽

Block Design ◽

Water Deficit Stress ◽

Water Deficiency ◽

Related Factors ◽

Randomized Block Design ◽

Relative Water ◽

Productive Potential ◽

Pod Length

Bean’s productivity is below its productive potential, and among the related factors is the sensitivity to water deficiency. Silicate fertilization may aid to better tolerate this abiotic stress. Therefore, this work aims to evaluate the effects of foliar silicon (Si) doses in the development and tolerance of water deficiency for the bean’s cultivation. The experiment was conducted in a greenhouse, with a completely randomized block design in a 6x2 factorial scheme with four repetitions. Six doses of silicon (0; 0.5; 1.0; 1.5; 2.0; 2.5 kg Si ha-1) with and without water deficiency in flowering were used. The pots with a capacity of 2 L were filled with dystrophic Red Argisol, and they were maintained with automatic irrigation. The leaf temperature (TF) was analyzed daily, and at the end of the cycle, the plants’ height, aerial and root fresh and dry matter, the number of grains per plant, the number of grains per pod, the number of pods per plant, pod length, and grain fresh and dry matter were determined. After water deficit stress, the percentage of absolute integrity and relative water capacity were determined. The water condition reflected differences in plant height, grain dry matter, number of grains per plant, pods per plant, and the foliar temperature. The silicon doses did not influence the development and tolerance to water deficit for the bean culture.

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Increase maize productivity and water use efficiency through application of potassium silicate under water stress

Scientific Reports ◽

10.1038/s41598-020-80656-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

M. A. Gomaa ◽

Essam E. Kandil ◽

Atef A. M. Zen El-Dein ◽

Mamdouh E. M. Abou-Donia ◽

Hayssam M. Ali ◽

...

Keyword(s):

Grain Yield ◽

Water Use Efficiency ◽

Water Deficit ◽

Water Use ◽

Field Experiments ◽

Foliar Application ◽

Potassium Silicate ◽

Water Deficit Stress ◽

Maize Productivity ◽

Use Efficiency

AbstractIn Egypt, water shortage has become a key limiting factor for agriculture. Water-deficit stress causes different morphological, physiological, and biochemical impacts on plants. Two field experiments were carried out at Etay El-Baroud Station, El-Beheira Governorate, Agriculture Research Center (ARC), Egypt, to evaluate the effect of potassium silicate (K-silicate) of maize productivity and water use efficiency (WUE). A split-plot system in the four replications was used under three irrigation intervals during the 2017 and 2018 seasons. Whereas 10, 15, and 20 days irrigation intervals were allocated in main plots, while the three foliar application treatments of K-silicate (one spray at 40 days after sowing; two sprays at 40 and 60 days; and three sprays at 40, 60, and 80 days, and a control (water spray) were distributed in the subplots. All the treatments were distributed in 4 replicates. The results indicated that irrigation every 15 days gave the highest yield in both components and quality. The highly significant of (WUE) under irrigation every 20 days. Foliar spraying of K-silicate three times resulted in the highest yield. Even under water-deficit stress, irrigation every fifteen days combined with foliar application of K-silicate three times achieved the highest values of grain yield and its components. These results show that K-silicate treatment can increase WUE and produce high grain yield requiring less irrigation.

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