Effects of saline water and exogenous application of hydrogen peroxide (H2O2) on Soursop (Annona muricata L.) at vegetative stage

Soursop is a fruit of great socioeconomic importance for the northeastern region of Brazil. However, the quantitative and qualitative limitation of the water resources of this region has reduced its production. The objective of this study was to evaluate the growth of ‘Morada Nova’ soursop plants irrigated with saline water and subjected to exogenous application of hydrogen peroxide through seed immersion and foliar spray. The study was conducted in plastic pots adapted as lysimeters, using a eutrophic Regolithic Neosol with sandy loam texture under greenhouse conditions. Treatments were distributed in randomized blocks, in a 4 x 4 factorial arrangement, corresponding to four levels of irrigation water electrical conductivity – ECw (0.7; 1.7; 2.7 and 3.7 dS m-1) and four concentrations of hydrogen peroxide – H2O2 (0, 25, 50 and 75 µM), with three replicates and one plant per plot. Foliar applications of H2O2 began 15 days after transplanting (DAT) and were carried out every 15 days at 17:00 h, after the sunset, by manually spraying the H2O2 solutions with a sprayer in such a way to completely wet the leaves (spraying the abaxial and adaxial faces). Treatment effects were evaluated based on plant height (PH), stem diameter (SD), number of leaves (NL) and leaf area (LA) at 60 and 90 DAT, and dry phytomass of leaves (LDP), stem (SDP), roots (RDP) and total (TDP) and leaf succulence (LS) at 90 DAT. Irrigation using water with estimated ECw of 1.55 dS m-1 caused acceptable mean reduction of 10% in soursop growth. Increasing concentrations of hydrogen peroxide did not attenuate the effects of salinity on plant height and leaf area during the vegetative stage. Hydrogen peroxide concentration of 20 µM led to higher leaf succulence in soursop plants.

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Hydrogen peroxide on acclimation of soursop seedlings under irrigation water salinity

Semina Ciências Agrárias ◽

10.5433/1679-0359.2019v40n4p1441 ◽

2019 ◽

Vol 40 (4) ◽

pp. 1441 ◽

Cited By ~ 1

Author(s):

André Alisson Rodrigues da Silva ◽

Geovani Soares de Lima ◽

Luana Lucas de Sá Almeida Veloso ◽

Carlos Alberto Vieira de Azevedo ◽

Hans Raj Gheyi ◽

...

Keyword(s):

Electrical Conductivity ◽

Hydrogen Peroxide ◽

Leaf Area ◽

Salt Concentration ◽

Irrigation Water ◽

Sandy Loam ◽

Water Salinity ◽

Limiting Factor ◽

Exogenous Application ◽

Plastic Bags

The Brazilian Northeast region provides favorable conditions for the exploitation of several crops, but the high salt concentration in irrigation water constitutes a limiting factor for production in most cases. In this context, this study aimed to evaluate the emergence, growth and partition of photoassimilates in soursop seedlings, cv. ‘Morada Nova’, subjected to irrigation with water of increasing salinity levels and to exogenous application of hydrogen peroxide. The study was carried out in plastic bags under greenhouse conditions, using a sandy loam Regolithic Neosol, in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in randomized blocks, in a 5 x 5 factorial arrangement, relative to five levels of irrigation water electrical conductivity - ECw (0.7, 1.4, 2.1, 2.8 and 3.5 dS m-1) and five concentrations of hydrogen peroxide - H2O2 (0, 25, 50, 75 and 100 µM), with four replicates and three plants per plot. Increasing salt concentration compromised all variables analyzed and leaf area was most sensitive. As irrigation water electrical conductivity increased, the deleterious effects of water salinity on the emergence percentage, emergence speed index, stem diameter and leaf area were attenuated by the exogenous application of hydrogen peroxide, with highest efficiency at the concentration of 50 µM. Hydrogen peroxide concentrations above 38 µM inhibited the specific leaf area of soursop, cv. ‘Morada Nova’.

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Growth and gas exchange of corn under salt stress and nitrogen doses

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v25n3p174-181 ◽

2021 ◽

Vol 25 (3) ◽

pp. 174-181

Author(s):

Henderson C. Sousa ◽

Geocleber G. de Sousa ◽

Carla I. N. Lessa ◽

Antonio F. da S. Lima ◽

Rute M. R. Ribeiro ◽

...

Keyword(s):

Stomatal Conductance ◽

Gas Exchange ◽

Leaf Area ◽

Plant Height ◽

Saline Water ◽

Saline Stress ◽

Low Salinity ◽

Salinity Water ◽

Hybrid Maize ◽

The University

ABSTRACT The excess of salts can affect several processes in the crops, and nitrogen (N) can attenuate the depressive effect of salinity. The objective was to evaluate the influence of nitrogen doses on the growth and gas exchange of corn crop irrigated with saline water. The experiment was conducted from June to September 2019 at the University of International Integration of Afro-Brazilian Lusophony, Redenção, CE, Brazil. The experimental design was completely randomized, in a 2 x 3 factorial scheme (supply water of 0.3 dS m-1 and saline solution of 3.0 dS m-1) and three nitrogen doses, 0, 80, and 160 kg ha-1, corresponding to 0, 50, and 100% of the recommended dose respectively, with six repetitions. At 30 and 45 days after sowing (DAS), plant height, leaf area, number of leaves, photosynthesis, transpiration, and stomatal conductance were evaluated. Saline stress affects plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The doses of 80 and 160 kg ha-1 provide greater performance in plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The use of low salinity water and doses of 80 and 160 kg ha-1 were more efficient in terms of plant height, leaf area, photosynthesis, transpiration, and conductance at 45 DAS. The dose of 160 kg ha-1 of N attenuates the harmful effects of salts in AG 1051 hybrid maize plants, providing higher values of photosynthesis, transpiration, and stomatal conductance at 45 DAS when irrigated with water of 3.0 dS m-1.

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PENGARUH PEMBERIAN BEBERAPA DOSIS KOMPOS KULIT BUAH KAKAO DAN DOLOMIT TERHADAP PERTUMBUHAN BIBIT KAKAO (Theobroma cacao L.) DI MEDIA ULTISOL

JURNAL AGROTEKNOLOGI ◽

10.24014/ja.v8i1.3871 ◽

2017 ◽

Vol 8 (1) ◽

pp. 29 ◽

Cited By ~ 1

Author(s):

Imanuel Jhon Hansen

Keyword(s):

Leaf Area ◽

Plant Height ◽

Stem Diameter ◽

Randomized Design ◽

Treatment Interaction ◽

Number Of Leaves ◽

Four Levels ◽

Theobroma Cacao L ◽

Cocoa Seedlings ◽

Range Test

The aim of research to determine the effect of compost main pod husks and dolomite as well as their interaction on the growth of cocoa seedlings in media ultisol. Research conducted at the Experimental Farm, Faculty of Agriculture, University of Riau from November 2015 until February 2016. Research in the form of factorial experiment using completely randomized design (CRD). The first factor pod husks compost comprises four levels (0, 75, 100 and 125 g / polybag) and the second factor dolomite consists of three levels (0, 10, and 20 g / polybag), each combination treatment was repeated 3 times. Parameters measured were plant height, leaf number, stem diameter, and leaf area. Each parameter the observed data were statistically analyzed using analysis of variance and test of Duncan's New Multiple Range Test (DNMRT) at 5% level. The results showed the effect of compost pod husks dose of 125 g / polybag significantly increased plant height, stem diameter, number of leaves and leaf area while dolomite dose of 20 g / polybag no real effect except leaf area compared with no treatment. Interaction pod husks compost dose of 100 g / polybag and dolomite dose of 20 g / polybag increase stem diameter, number of leaves and leaf area significantly compared without compost pod husks and dolomite but less tangible than other combinations.

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Physiological changes and growth of soursop plants under irrigation with saline water and H2O2 in post-grafting phase

Semina Ciências Agrárias ◽

10.5433/1679-0359.2020v41n6supl2p3023 ◽

2020 ◽

Vol 41 (6supl2) ◽

pp. 3023-3038

Author(s):

Luana Lucas de Sá Almeida Veloso ◽

◽

Geovani Soares de Lima ◽

Carlos Alberto Vieira de Azevedo ◽

Reginaldo Gomes Nobre ◽

...

Keyword(s):

Irrigation Water ◽

Cell Damage ◽

Saline Water ◽

Block Design ◽

Co2 Concentration ◽

Stem Diameter ◽

Northeastern Brazil ◽

Semiarid Region ◽

Exogenous Application ◽

Four Levels

The low availability of water associated with high salt concentrations in irrigation water has become one of the leading challenges for agricultural production in the semiarid region of Northeastern Brazil. Thus, the study of strategies to enable the use of saline water in agriculture is essential. From this perspective, this study aimed to evaluate alterations in gas exchange, chloroplast pigments, and cell damage in soursop (Anonna muricata L.) irrigated with saline water and under exogenous application of hydrogen peroxide (H2O2) in the post-grafting phase. A study was conducted in Campina Grande, PB, under greenhouse conditions. The treatments were distributed in a randomized block design, in a 4 × 2 factorial arrangement, consisting of four levels of electrical conductivity of water (ECw; 1.6; 2.4; 3.2 and 4.0 dS m-1) and two concentrations of H2O2 (0 and 20 µM) with four replications. Irrigation water salinity from 1.6 dS m-1 caused changes in the stomatal conductance, respiration, and internal CO2 concentration of soursop plants. A 20 µM concentration of H2O2 reduced the effects of salinity on transpiration and CO2 assimilation values, in addition to promoting the biosynthesis of photosynthetic pigments and reducing cell damage in soursop plants, at 150 days after transplantation. The exogenous application of 20 µM H2O2 reduced the deleterious effects of salinity on the stem diameter of both rootstock and scion in soursop plants irrigated with ECw of 1.6 dS m-1. The exogenous application of 20 µM H2O2 was not efficient in mitigating the damage caused by salinity on the stem diameter of the soursop at grafting point.

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Impact of Exogenous Application of Salicylic Acid and Hydrogen Peroxide on Essential Nutrients and Silymarin in Silybum Marianum (L.) Gaertn Grown at Two Different Altitudes of Balochistan Under Cadmium Stress

10.21203/rs.3.rs-917972/v1 ◽

2021 ◽

Author(s):

Mereen Nizar ◽

Kanval Shaukat ◽

Noreen Zahra ◽

Abdul Samad ◽

Mohammad Bilal Hafeez ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Salicylic Acid ◽

Cadmium Toxicity ◽

Foliar Spray ◽

Cadmium Stress ◽

Milk Thistle ◽

Silybum Marianum ◽

Essential Nutrients ◽

Exogenous Application

Abstract Cadmium (Cd+2) is a potentially toxic element that inhibits growth and development of several species of plants along with Silybum marianum (L.) Gaertn which is an essential medicinal plant belonging to family Asteraceae. The exogenous application with 0.25µM Salicylic acid (SA) and 10µM hydrogen peroxide (H2O2) to ameliorate harmful effects of cadmium (500 µM) on milk thistle were studied that were grown at two different ecological zones of Balochistan province of Pakistan i.e. Quetta (Qta) and Turbat (Tbt). The design of experiment was Randomized Complete Block Design (RCBD) with three replicates. Application of SA and H2O2, priming (P), Foliar spray (FS) and combinational treatments (P+FS) were highly helpful in alleviating the negative role of cadmium toxicity. The essential nutrients i.e. nitrate (NO3-), calcium (Ca2+) and potassium (K) were affected by Cd+2 induced toxicity however, the substantial role of SA and H2O2 widely helped to reduce the cadmium stress and boosted up the plant nutrients content. In a nutshell, exogenous treatments of SA and H2O2 enhanced the yield potential along with highest silymarin contents in milk thistle seeds which is of prime significance for its medicinal importance in treatment of liver diseases. The data obtained in this study highly recommend the priming and foliar spray of SA and H2O2 on milk thistle plants, as the best solution to alleviative the cadmium toxicity which will ultimately leads to better growth and yield of the plants.

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Effect of Rootstock, Soil and Foliar Nutrition in Some Vegetative Characteristics Growth of Local Lemon Seedlings Citrus Limon L.

Journal of University of Babylon for Pure and Applied Sciences ◽

10.29196/jubpas.v27i2.2181 ◽

2019 ◽

Vol 27 (2) ◽

pp. 277-285

Author(s):

Sahar Hussein Tkhyel ◽

Raad Taha Mohammed Ali Balaket

Keyword(s):

Leaf Area ◽

Plant Height ◽

Foliar Spray ◽

Suppressive Effect ◽

Leaf Number ◽

Citrus Limon ◽

Sour Orange ◽

Foliar Nutrition ◽

Randomized Design ◽

Significant Difference

An experiment was conducted in the wooden canopy affiliated to the Technical College AL-Musaib during the period from the beginning of March until the end of December, 2017 on local lemon citron seedlings aged seven months and grafted on the two seed roots Sour orange and Sweet lemon to study the effect spray and soil fertilizers feeding of organic TARASOIL CALCIO with concentration(0, 50, 100)ml.L-1and sprays of DECSON with concentration of (0, 10, 20) ml. L-1to study the characteristics of vegetative, The soil fertilization in 11/4/2017, 11/5/2017, 11/9/2017 and 11/10/2017, foliar spray in 74//2017, 7/5/2017, 7/9/2017 and 7/10/2017, the experiment was applied by Completely Randomized Design(C.R.D)as factorial experiment(2×3×3) with three replicates and three seedling and 162 seedlings as a total group, The results were analyzed using the statistical analysis program(Excel). The averages were compared according to the least significant difference(L.S.D)at a probability level of (0.05), The type of rootstock have a significant effect on vegetative, The rootstock of sweet lemon increased plant height, leaves the number, leaf area, while rootstock sour orange increased in the stem, Scion. Stalk of sweet lemon +100ml.L-1TARASOIL CALCIO had a suppressive effect in plant height, leaves number while rootstock sour orange suppressive in stock stem, Scion, leaf area, Stalk of sweet lemon +20 ml.L-1 DECSON had a suppressive effect in plant height, leaf number, leaf area while Sour crease stalk a suppressive in main stem, Scion. sweet lemon stalk+100ml.L-1TARASOIL CALCIO+20 ml.L-1 DECSON had a suppressed in plant height, Scion, leaf number, leaf area, while stalk the orange had a suppressive effect in a stock stem.

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Salt stress and exogenous application of hydrogen peroxide on photosynthetic parameters of soursop

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v23n4p257-263 ◽

2019 ◽

Vol 23 (4) ◽

pp. 257-263 ◽

Cited By ~ 1

Author(s):

André A. R. da Silva ◽

Geovani S. de Lima ◽

Carlos A. V. de Azevedo ◽

Luana L. de S. A. Veloso ◽

Hans R. Gheyi ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Salt Stress ◽

Irrigation Water ◽

Sandy Loam ◽

Block Design ◽

Co2 Concentration ◽

Co2 Assimilation ◽

Carboxylation Efficiency ◽

Photosynthetic Parameters ◽

Exogenous Application

ABSTRACT This study aimed to evaluate the gas exchanges and photosynthetic pigments of soursop seedlings cv. ‘Morada Nova’ irrigated with saline waters and subjected to exogenous application of hydrogen peroxide by seed soaking and foliar spraying. The study was carried out using plastic bags under greenhouse conditions at the Center of Technology and Natural Resources of the Federal University of Campina Grande, PB, Brazil, using a eutrophic Regolithic Neosol of sandy loam texture. Treatments were arranged in a randomized block design, in 5 x 5 factorial scheme, which consisted of five levels of electrical conductivity – ECw (0.7; 1.4; 2.1; 2.8 and 3.5 dS m-1) of irrigation water and five concentrations of hydrogen peroxide - H2O2 (0, 25, 50, 75 and 100 µM), with four replicates and three plants per plot. As the salt stress increased, there were reductions in internal CO2 concentration, instantaneous carboxylation efficiency and water use efficiency, and instantaneous carboxylation efficiency was the most sensitive variable. Hydrogen peroxide at concentrations of 25 and 50 µM attenuated the deleterious effects of water salinity on stomatal conductance, CO2 assimilation rate and chlorophyll a content, and the concentration of 25 µM was the most efficient. The content of chlorophyll b and carotenoids of soursop cv. ‘Morada Nova’ had the deleterious effects caused by the salinity of irrigation water mitigated by the exogenous application of hydrogen peroxide in the concentration of 25 μM.

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Study of growth and yield of maize (Zea mays L.) under levels of nitrogen and potassium fertilization

Muthanna Journal for Agricultural Sciences ◽

10.52113/mjas04/8.1/8 ◽

2020 ◽

Vol 8 (1) ◽

pp. 55-62

Author(s):

Yahya A. A.M. Alnaseri ◽

Sundus A. Alabdulla

Keyword(s):

Zea Mays ◽

Grain Yield ◽

Leaf Area ◽

Plant Height ◽

Zea Mays L ◽

Block Design ◽

Growth And Yield ◽

Potassium Fertilizer ◽

Four Levels ◽

Significant Superiority

"A field experiment was conducted during the autumn season 2018 at Al- Zinawiya site 10 km south-east of center Al- Nasiriya Governorate, to determine the effect of four levels of Nitrogen fertilizer (0.120,180 and 240 kg N ha-1 ) and four levels of Potassium fertilizer (0,80,120 and 160 kg K ha-1 ) and The interaction between them, on growth and yield of corn (Zea mays L.) Fajer-1 variety. Factorial experiment according to Randomized complete block design (R.C.B.D) was used in this study with three replicates The results showed the level 240 kg N ha-1 achieved significant superiority in the Days to Tasselling, Days to silking, Plant height, Leaf area, number of grains per ear, weight 500 grain, grain yield, the concentration of nitrogen and potassium in leaves (54.09 Days, 57.58 Days, 166.17cm, 399.29cm2 , 404.83per ear-1 , 158.20gm, 6.702t h-1 , 1.46Mg gm-1 , 1.28Mg gm-1 respectively). The level of 160 kg K-1 was significant superior among other levels by giving the best results of studied characters, (Days to Tasselling, Days to silking, Plant height, Leaf area, number of grains per ear, grain yield and the concentration of nitrogen in the leaves.) (54.09 Days, 57.58days, 138.42cm, 338.05 cm2 , 338.58 per ear, 5.250 t h-1 , 1.44Mg gm-1 respectively). The interaction for the treatment (240 kg N h-1 + 160 kg K h-1 ) was superior grain number of per ear (430.00), weight 500 grain (160.40 gm), and grain yield (7.060 t h-1)"

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Desempenho da rúcula sob condições de sombreamento e níveis de salinidade da água de irrigação

Colloquium Agrariae ◽

10.5747/ca.2020.v16.n4.a381 ◽

2020 ◽

Vol 16 (4) ◽

pp. 38-45

Author(s):

Rilbson Henrique Silva dos Santos ◽

Mirandy dos Santos Dias ◽

Francisco de Assis da Silva ◽

João Paulo de Oliveira Santos ◽

Saniel Carlos dos Santos ◽

...

Keyword(s):

Leaf Area ◽

Plant Height ◽

Irrigation Water ◽

Aerial Part ◽

Saline Water ◽

Dry Mass ◽

Family Farming ◽

Salinity Levels ◽

Number Of Leaves ◽

The City

Arugula is a crop of fast vegetative growth and short cycle, widely accepted worldwide. In Brazil, its production generates jobs and income for family farming. However, the use of saline water in the cultivation of this plant is one of the main factors that limit production. Given this situation, the objective of this study was to evaluate the growth of Apreciatta arugula cultivated under conditions of shading and salinity levels of irrigation water. The experiment was conducted in a greenhouse in the experimental area of the Agricultural Sciences Center of the Federal University of Alagoas, in the city of Rio Largo, AL. The treatments were obtained from the combination of two shading conditions (with shading and without shading) and five levels of electrical conductivity of the irrigation water (0.5; 2.0; 3.5; 5.0 and 6.5 dS m-1). The experimental design used was completely randomized in a 2 x 5 factorial scheme. Combined, the factors resulted in 10 treatments with four replications and one plant per plot, totaling 40 experimental units. Arugula plants were evaluated for leaf number, plant height, leaf area and dry matter of the aerial part. Increasing levels of salinity in the irrigation water, lead to a reduction in the number of leaves, plant height and dry mass of the aerial part of arugula plants cultivar Apreciatta. However, the use of shading together with the salinity of irrigation water up to 1.4 dS m-1does not affect the leaf area of arugula plants, being possible to cultivate without considerable losses.

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OIL PALM SEED GROWTH RESPONSE WITH GIVING ORGANIC TITHONIA AND UREA FERTILIZER

ZIRAA'AH MAJALAH ILMIAH PERTANIAN ◽

10.31602/zmip.v46i1.3425 ◽

2021 ◽

Vol 46 (1) ◽

pp. 32

Author(s):

Fitra Syawal Harahap ◽

Khairul Rizal ◽

Aziddin Harahap ◽

Iman Arman ◽

Mulya Rafika

Keyword(s):

Experimental Design ◽

Leaf Area ◽

Plant Height ◽

Oil Palm ◽

Block Design ◽

Organic Fertilizer ◽

Randomized Block Design ◽

Seed Growth ◽

Four Levels ◽

The University

Seedlings which look prima is a prerequisite for the success of oil palm cultivation. Besides, because of the factors in the pre-nursery genetic, the provision of nutrients in early growth seedlings has an important role performance determine the appearance of the seedlings thoroughly. This study aims to determine the influence of the growth of oil palm seedlings at each concentration of organic fertilizer tithonia and fertilizer of urea for pre-nursery. The experiment was carried out from January to Agustus 2019 in the Experimental Garden of the Faculty of Science and Technology, the University of Labuhanbatu Rantauprapat with a height of 13 meters above sea level. The experimental design used was a Randomized Block Design with a factorial pattern that is repeated three times. The experimental design used was a Randomized Block Design with a factorial pattern that is repeated three times. The first factor includes the dose of Organic Fertilizer Tithonia (ton/ha) comprising of three standards, namely T0 = 0 ton/ha, T1 = 10 ton/ha, T2 = 20 tons/ha and the second factor was fertilizer dosage Uera which consists of four levels, namely U0 = 0 kg/ha, U1 = 100 kg/ha, T2 = 200 kg/ha, U3 = 300 kg/ha. The experimental results show that there are significant interactions of organic fertilizer Tithonia with fertilizers urea on plant height (cm) and leaf area of oil palm seedlings (cm2). Treatment of organic fertilizer tithonia 20 tons/ha with fertilizer urea 300 kg/ha yield plant height and leaf area of oil palm seedlings the best for pre-nursery.

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