scholarly journals Water consumption of the sunflower crop irrigatedwith saline water

DYNA ◽  
2019 ◽  
Vol 86 (208) ◽  
pp. 221-226 ◽  
Author(s):  
Kaline Dantas Travassos ◽  
Hans Raj Gheyi ◽  
Helder Morais Mendes Barros ◽  
Frederico Antônio Loureiro Soares ◽  
Claudio Augusto Uyeda ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Experimental Design ◽  
Water Consumption ◽  
Irrigation Water ◽  
Saline Water ◽  
Saline Waters ◽  
Sunflower Crop

The objective was to evaluate the water consumption of sunflower cultivars irrigated with saline waters. The experimental design utilized was in randomized blocks of a 2 x 4 factorial arrangement. This was composed of two levels of electrical conductivity (ECw) of irrigation water (N1 - 0.6 and N2 - 3.0 dS m-1 at 25 ºC) and four cultivars of sunflower (C1 - Helio 863, C2 - Embrapa 122-V2000, C3 - Catissol 01 and C4 - Multissol), with three replications, each of them with three plants totaling 72 experimental units. There was a reduction in water consumption of sunflower cultivars irrigated with saline water (N2 - 3.0 dS m-1). The irrigation with saline water resulted in a greater volume of drained water in all sunflower cultivars.

scholarly journals SALICYLIC ACID AS AN ATTENUATOR OF SALT STRESS IN SOURSOP

2020 ◽  
Vol 33 (4) ◽  
pp. 1092-1101
Author(s):  
ANDRÉ ALISSON RODRIGUES DA SILVA ◽  
GEOVANI SOARES DE LIMA ◽  
CARLOS ALBERTO VIEIRA DE AZEVEDO ◽  
LUANA LUCAS DE SÁ ALMEIDA VELOSO ◽  
HANS RAJ GHEYI
Keyword(s):  
Electrical Conductivity ◽  
Salicylic Acid ◽  
Salt Stress ◽  
Stomatal Conductance ◽  
Gas Exchange ◽  
Irrigation Water ◽  
Saline Water ◽  
Stress Effects ◽  
Saline Waters ◽  
Induced Tolerance

ABSTRACT The search for alternatives that enable the use of saline waters in agriculture has become constant. In this context, the objective was to evaluate the effects of salicylic acid in mitigating salt stress effects on the growth and gas exchange of soursop cv. ‘Morada Nova’. The study was conducted in a greenhouse, in the municipality of Campina Grande - PB, Brazil. Treatments were distributed in randomized blocks, in a 5 x 4 factorial arrangement, corresponding to five levels of electrical conductivity of irrigation water - ECw (0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1) and four concentrations of salicylic acid - SA (0; 1.2; 2.4 and 3.6 mM), with three replicates. Irrigation with saline water compromised the growth and gas exchange of soursop cv. ‘Morada Nova’. However, exogenous application of salicylic acid induced tolerance to salt stress in soursop plants, as their growth, transpiration, stomatal conductance, photosynthesis and instantaneous carboxylation efficiency were favored by the application of salicylic acid, even when exposed to water salinity.

scholarly journals Use of Salines Waters and Biofertilizers in Quality of the Seedlings From Passiflora edulis Evaluated by the Dry Phytomass

2019 ◽  
Vol 11 (5) ◽  
pp. 121
Author(s):  
Francisco de O. Mesquita II ◽  
Ana C. M. Meireles ◽  
José L. N. Cardoso ◽  
Carlos W. Oliveira ◽  
Patrycia L. B. Roguides
Keyword(s):  
Electrical Conductivity ◽  
Experimental Design ◽  
Irrigation Water ◽  
Passion Fruit ◽  
Passiflora Edulis ◽  
Maximum Capacity ◽  
Saline Waters ◽  
Salinity Increase ◽  
Polyethylene Bags

The objective of this study was to evaluate the effects of the biofertilizers (common and enriched) in substrate irrigated with saline waters on the quality of the seedlings evaluated by the phytomass from yellow Passiflora edullis. In this sense, an experiment was carried in a greenhouse at the Center of Agricultural Sciences and Biodiversity CCAB/UFCA, Crato-CE, from October/2017 to March/2018. The substrate used was a material of the first 20 cm to depth of a Red Yellow Latosol. The experimental design was completely randomized in a factorial scheme of type 5 × 3, with three replications, referring to the electrical conductivity values of the irrigation water: 0.5; 1.0; 2.0; 3.0 and 4.0 dS m-1, in the soil without the bovine biofertilizer; in treatments with common biofertilizer and, evaluated in the soil with enriched biofertilizer, conditioned in black polyethylene bags with it a maximum capacity of 5.0 kg, totaling 60 treatments. The fermented bovine biofertilizer after dilution in non-saline and non-chlorinated water (0.5 dS m-1), in the proportion of 1:3, was applied only once to 10% of the substrate volume, two days before sowing. The salinity increase of the irrigation water affected negatively the phytomass production, but with less intensity in the treatments with enriched biofertilizer. The enriched and common biofertilizer provided higher growth and consequently higher phytomass production of passion fruit seedlings in relation to the soil without the respective input, independently of the level of salinity of irrigation water.

scholarly journals Fertilização organomineral e águas salinas na produção de fitomassa de Capsicum annuum

2020 ◽  
Vol 1 (50) ◽  
pp. 179
Author(s):  
Francisco de Oliveira Mesquita ◽  
Antônio Gustavo Luna Souto ◽  
Adriana Araújo Diniz ◽  
Jackson de Mesquita Alves ◽  
Alex Serafim de Lima ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Experimental Design ◽  
Capsicum Annuum ◽  
Irrigation Water ◽  
Saline Water ◽  
Organic Input ◽  
Maximum Capacity ◽  
Polyethylene Bags ◽  
The Common

An experiment was carried out in a greenhouse, from march to april/2018, in Crato-CE to evaluate the effects of biofertilizers (common and chemically rich) in substrate irrigated with different saline compositions on phytomass production of yellow pepper seedlings, success variety (952). The experiment was developed using a material or substrate from the first 20 cm of a Red-yellow Latosol. The experimental design was completely randomized in a 5x3 factorial scheme, with three replications referring to the electrical conductivity values of the irrigation water: 0.5; 1.0; 2.0; 3.0 and 4.0 dS m-1 in the soil without the organic input; with common biofertilizer, and in soil with rich biofertilizer, totalizing 45 treatments, packed in black polyethylene bags with a maximum capacity of 3.0 kg. The biofertilizer, after dilution in a 3:1 ratio, was applied only once to 10% of the substrate volume two days before sowing. Irrigation with saline water affected the morphology and quality of yellow pepper seedlings (cv. Success) but with less intensity in the treatments that received the common and rich organic inputs, respectively.

scholarly journals Saline water irrigation in semiarid region: II – effects on growth and nutritional status of onions

2019 ◽  
pp. 1177-1182
Author(s):  
Luiz Guilherme Medeiros Pessoa ◽  
Maria Betânia Galvão dos Santos Freire ◽  
Renato Lemos dos Santos ◽  
Fernando José Freire ◽  
Patrícia Ribeiro dos Santos ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Growth Parameters ◽  
Sandy Loam ◽  
Saline Water ◽  
Sodium Adsorption Ratio ◽  
Semiarid Region ◽  
Brazilian Semiarid ◽  
Saline Waters ◽  
Onion Cultivar

The use of saline waters for the irrigation of crops such as onion is a common practice in the Brazilian semiarid region. However, the effect of the use of these waters on onion nutrition and growth has been underappreciated. This work aims to evaluate Ca2+, Mg2+, Na+, K+ and Cl- levels and onion growth in two Fluvisols under irrigation with waters of variable electrical conductivity and increasing values of sodium adsorption ratio. A greenhouse experiment was conducted in two Fluvisols cultivated with onion. After transplanting each plant was irrigated with saline waters, in a factorial arrangement 2 x 3 x 6, corresponding to two soils (sandy loam and silt clay loam), three values of electrical conductivity (EC - 200, 700 and 2,000 μS cm-1) and six levels of sodium adsorption ratio (SAR - 0, 5, 10, 15, 20 and 25 (mmolc L-1)0.5). Plants were collected at 90 days after transplanting and onion growth parameters as well Ca, Mg, K, Na and Cl levels were each measured. The SAR of the irrigation waters and the soil did not show any significant influence on the onion growth variables or on the levels of the evaluated elements. The increase in salinity of the irrigation water promoted a reduction in the growth variables of the evaluated onion cultivar. Increases in the levels of Ca, Na and Cl as well as a reduction in the level of K in the onion plant dry matter were all observed with increasing salinity of the irrigation water; however, the Mg content level was not affected. As the salinity of the irrigation water was the main factor affecting onion growth, an EC of 200 µS cm-1 is the limit to promote the best onion growth cultivated in both sandy and silt clay soils.

scholarly journals Formation of ‘Crioula’ guava rootstock under saline water irrigation and nitrogen doses

2016 ◽  
Vol 20 (8) ◽  
pp. 739-745 ◽  
Author(s):  
Leandro de P. Souza ◽  
Reginaldo G. Nobre ◽  
Evandro M. da Silva ◽  
Geovani S. de Lima ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Experimental Design ◽  
Deleterious Effect ◽  
Saline Water ◽  
Dry Weight ◽  
Saline Water Irrigation ◽  
N Dose

ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.

scholarly journals Production of Pityrocarpa moniliformis (Benth.) Luckow & R.W. Jobson (Fabaceae) seedlings irrigated with saline water

2021 ◽  
Vol 25 (3) ◽  
pp. 182-188
Author(s):  
Adriana dos S. Ferreira ◽  
Caio C. P. Leal ◽  
Bruno da S. Guirra ◽  
Salvador B. Torres ◽  
Marco Porceddu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Soluble Sugars ◽  
Dry Mass ◽  
Initial Growth ◽  
Saline Irrigation ◽  
Total Soluble Sugars ◽  
Chlorophylls A And B

ABSTRACT Saline irrigation water at high levels causes disturbance in the growth of more sensitive plants. The objective of this research was to evaluate the initial growth of Pityrocarpa moniliformis seedlings under different electrical conductivity in irrigation water through physiological and biochemical analyses. The experiment was conducted in a greenhouse with five water electrical conductivities (0.5, 2.0, 4.0, 6.0 and 8.0 dS m-1) and four repetitions of 20 plants each, arranged in a randomized block design. Application of the treatments with irrigation water containing NaCl began at 30 days after sowing. To determine the behaviour of the species, the following variables were analysed: stem diameter, plant height, number of leaves, leaf area, Dickson quality index, shoot dry mass, root dry mass and total dry mass, as well as the biochemical variables, such as the concentrations of total soluble sugars, free proline and chlorophylls a and b. The increase in irrigation water salinity hampered the growth of P. moniliformis seedlings, with electrical conductivity of 0.5 dS m-1 being the limit for maximum production. The results also indicated that the deleterious effects of salt stress on P. moniliformis seedlings variables increase in concentrations of proline, total soluble sugars and betaine glycine.

scholarly journals IRRIGAÇÃO DE PORTA-ENXERTOS CÍTRICOS COM ÁGUAS SALINAS

Irriga ◽  
2006 ◽  
Vol 11 (3) ◽  
pp. 428-440
Author(s):  
Tales Miler Soares ◽  
Sergio Nascimento Duarte ◽  
Cristiano Nascimento Duarte ◽  
Christiano César Dibbern Graf ◽  
Marcelo Zanetti ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Plant Growth ◽  
Natural Water ◽  
Saline Water ◽  
Calcium Nitrate ◽  
Sao Paulo ◽  
Water Type ◽  
São Paulo ◽  
New Production ◽  
Saline Waters

IRRIGAÇÃO DE PORTA-ENXERTOS CÍTRICOS COM ÁGUAS SALINAS  Tales Miler Soares1; Sergio Nascimento Duarte1; Christiano César Dibbern Graf2; Marcelo Zanetti2; Silvio Sandoval Zocchi31Departamento de Engenharia Rural, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP, [email protected] Mudas, Conchal,  SP3Departamento de Ciências Exatas, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP  1 RESUMO Avaliar o desenvolvimento dos porta-enxertos limoeiro ‘Cravo’, tangerineira ‘Cleópatra’ e citrumeleiro ‘Swingle’, irrigados com águas salinas, mensurando se a aplicação de Ca(NO3)2 mitiga eventuais efeitos de íons fitotóxicos, foi objetivo do presente trabalho, conduzido sob ambiente protegido, em Rio Claro-SP. Investigou-se três qualidades de água: água natural (CEa= 1,19 dS m-1), explorada de poço tubular profundo, água dessalinizada (CEa= 0,02 dS m-1), obtida mediante osmose reversa da água natural, e água residual (CEa= 2,11 dS m-1), sub-produto da dessalinização. Os níveis de Ca(NO3)2 avaliados foram 0 e 2,105 g L-1. Averiguando-se os parâmetros usuais do crescimento vegetal, não foram observadas diferenças estatísticas, entre os tratamentos, decorrentes da qualidade da água, embora se tenha registrado que esta contribuiu para o aumento da salinização do substrato, ultrapassando, inclusive, o valor da salinidade limiar (CEes= 1,4 dS m-1) reconhecido para os citros. A adição de Ca(NO3)2 não incrementou o desenvolvimento, atuando negativamente no crescimento inicial das raízes e do caule. O curto período necessário ao crescimento dos porta-enxertos, proporcionado pelo atual sistema de produção, associado às irrigações freqüentes e suas frações de lixiviação podem ter restringido efeitos negativos das águas salinas investigadas. UNITERMOS: Citrus, salinidade, condutividade elétrica, substrato.  SOARES, T.M.; DUARTE, S.N.; GRAF, C.C.D.; ZANETTI, M.; ZOCCHI, S.S.       CITRUS ROOTSTOCKS IRRIGATION WITH SALINE WATER  2 ABSTRACT This research aimed to evaluate the growth of three citrus rootstocks (‘Rangpur’ lime, ‘Cleopatra’ mandarin and ‘Swingle’ citrumelo) irrigated with saline waters, under greenhouse conditions, in order to measure if calcium nitrate mitigates their toxic effects. Three water qualities were investigated: natural water (ECw= 1,19 dS m-1), obtained from a deep tubular well, desalinated water (ECw= 0,02 dS m-1), obtained by reverse osmosis from the natural water, and reject water (ECw= 2,11 dS m-1), resultant from the desalination process. Two Ca(NO3)2 levels were evaluated: 0 and 2,105 g L-1. Usual parameters for plant growth analysis were measured. According to Tukey’s test (5% probability), water quality did not affect rootstocks development, although the water type have contributed to increase the electrical conductivity of substrate saturation extract (ECs) along the experimental period, surpassing the salinity threshold value (ECs = 1,4 dS m-1) reported for citrus. The Ca(NO3)2 addition did not increase the plant growth, but negatively affected the first evaluations of root and stem diameter development. The short time necessary to rootstocks growth provided by new production system, associated to the frequent irrigations and its leaching fractions possible may have restricted the negative effects of saline waters. KEYWORDS: Citrus, salinity, electrical conductivity, substrate.  

scholarly journals Growth and quality of soursop (Annona muricata, L.) seedlings under saline stress and hydrogen peroxide (H2O2)

2017 ◽  
pp. 1643-1649
Author(s):  
André Alisson Rodrigues da Silva ◽  
Luana Lucas de Sá Almeida Veloso ◽  
Geovani Soares de Lima ◽  
Carlos Alberto Vieira de Azevedo ◽  
Hans Raj Gheyi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Irrigation Water ◽  
Saline Water ◽  
Saline Stress ◽  
Annona Muricata ◽  
Relative Growth ◽  
Saline Water Irrigation ◽  
Sensitive Variable

This study aimed to evaluate growth and quality of soursop seedlings cv. Morada Nova, as a function of saline water irrigation and exogenous applications of hydrogen peroxide (H2O2), under greenhouse conditions. The experimental design used was randomized blocks in 5 x 5 factorial scheme, corresponding to the combination of 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 (0, 25, 50, 75 and 100 µM). The results showed that Hydrogen peroxide concentrations were applied by soaking the seed for 24 h and by spraying on all leaves of soursop seedlings. Irrigation water above electrical conductivity of 0.7 dS m-1 negatively affected growth and quality of soursop seedlings cv. Morada Nova. The dry phytomass of root was the most sensitive variable to saline stress. Hydrogen peroxide concentrations of 31 and 100 µM led to highest relative growth rate in leaf area and dry phytomass of leaves and stem, respectively. The quality of soursop seedlings cv. Morada Nova was not compromised by using water with electrical conductivity of 3.5 dS m-1 in irrigation.

scholarly journals Cultivation of CNPA G3 sesame irrigated with saline water and fertilized with nitrate-N and ammonium-N

2017 ◽  
Vol 21 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Geovani S. de Lima ◽  
Adaan S. Dias ◽  
Lauriane A. dos A. Soares ◽  
Hans R. Gheyi ◽  
José P. Camara Neto ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Consumption ◽  
Saline Water ◽  
Early Maturation ◽  
Nitrate N ◽  
Ammonium N ◽  
Use Efficiency ◽  
Delayed Flowering

ABSTRACT The study aimed to evaluate the effects of irrigation with saline water and fertilization with nitrate (NO3--N) and ammonium (NH4+-N) ratios on growth, flowering, water consumption and water use efficiency of the sesame cv. CNPA G3. The treatments were distributed in randomized blocks in a 5 x 5 factorial with three replicates, referring to five levels of electrical conductivity of the irrigation water - ECw (0.6, 1.2, 1.8, 2.4 and 3.0 dS m-1) and nitrate (NO3--N) and ammonium (NH4+-N) (200/0, 150/50, 100/100, 50/150, 0/200 mg kg-1) ratios. Irrigation with saline water above 0.6 dS m-1 inhibited the growth, delayed flowering and promoted early maturation of capsules of sesame, cv. CNPA G3. The proportion of 0/200 mg kg-1 of NO3--N/NH4+-N promoted the greatest increase relative to stem diameter and height of sesame plants. Water consumption decreases with increasing ECw and was significantly lower in plants fertilized with the proportion of 0/200 of NO3--N/NH4+-N. The interaction between ECw levels and ammonium/nitrate proportions significantly affect water use efficiency, and the highest value was obtained with ECw of 0.6 dS m-1 and fertilization with 150:50 mg kg-1 of NO3--N and NH4+-N.

scholarly journals Production of forage palm cultivars (Orelha de Elefante Mexicana, IPA-Sertânia and Miúda) under different salinity levels in irrigation water

2021 ◽  
pp. 977-982
Author(s):  
Márcia Cristina de Araújo Pereira ◽  
Carlos Alberto Vieira de Azevedo ◽  
José Dantas Neto ◽  
Mariana de Oliveira Pereira ◽  
Jailton Garcia Ramos ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Irrigation Water ◽  
Saline Water ◽  
Salinity Level ◽  
Semiarid Region ◽  
Brazilian Semiarid ◽  
Salinity Levels ◽  
Four Levels ◽  
The Impact ◽  
Different Levels

Brazilian semiarid region is characterized by irregular rainy periods that limits the production of forage feed for the maintenance of agricultural livestock and causes losses in the production. Despite that, semiarid region stands out in the production of forage palm, buffering the impact of drought in the area. Thus, this study aimed at analyzing the effect of different levels of salinity in irrigation water on the production of forage palm in the semiarid region. The experiment was arranged as a complete randomized block, in a 4x3 factorial arrangement and four levels of salinity (0.2, 2.0, 3.8 and 5.6 dS m-1); three cultivars (Miúda, Orelha de Elefante Mexicana and IPA-Sertânia) with 4 replications. The variables evaluated were the following: number of primary, secondary, tertiary and total cladodes, cladode biomass and estimative of threshold salinity (SL). The results showed that irrigation with saline water with an electrical conductivity of 2.0 dS m-1 negatively affected the emission of cladodes of superior orders for all forage palm cultivars. Miúda cultivar presented the best production of fresh phytomass (13.36 kg per plant) under a salinity level of 4.04 dS m-1, followed by Orelha de Elefante Mexicana (12.55 kg per plant) under a salinity level of 2.73 dS m-1 and Baiana (11.56 kg per plant) under a salinity level of 2.17dS m-1.

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