ABSTRACT Amaranthus cruentus L. is a forage species, with grains that exhibit excellent nutritional characteristics, being the 'BRS Alegria' first cultivar recommended for cultivation in Brazil. This study aimed at evaluating effect of salt stress on growth and concentrations organic inorganic solutes ('BRS cultivar). Height, stem diameter, number leaves, leaf, root dry mass, leaf area, relative water content membrane integrity percentage, as well soluble carbohydrate, free amino acid,...

ABSTRACT The objective of this study was to evaluate the growth and accumulation ions in lettuce grown different hydroponic systems recirculation frequencies. experimental design randomized blocks with 8 treatments 4 replicates. evaluated were Nutrient Flow Technique (NFT) an adapted Deep (DFT), latter frequencies 0.25, 2 h. Both used fresh water brackish water. Plant growth, inorganic solutes (Na+, K+, Cl- NO3-) correlation between dry matter production Na+/K+ Cl-/NO3- evaluated. salinity...

Salt-induced redox and ion imbalance may lead to increased oxidative stress impair the plant growth. However, among many reactive oxygen species (ROS) produced under stress, hydrogen peroxide (H2O2) plays a central role in several signal transduction pathways triggering series of physiological mechanisms increase tolerance salt stress. Thus, this study aimed evaluate changes balance inorganic organic solutes induced by seed priming with H2O2 leaves roots sunflower plants grown In study, six...

ABSTRACT Watermelon plays an important role in Brazilian agribusiness. The objective of present study was to evaluate the effect different irrigation managements and water salinity levels, on main productive postharvest characteristics mini-watermelon (Citrullus lanatus) cv. ‘Sugar Baby’. experiment conducted a greenhouse completely randomized design, arranged 2 x 4 factorial scheme, with four replicates. treatments consisted two types management (conventional pulse) saline levels nutrient...

ABSTRACT Salinity is one of the main limiting factors for crop growth. The metabolic responses to salt stress are variable and depend on species characteristics. This study aimed select sunflower genotypes tolerant evaluate some mechanisms tolerance in two contrasting (salt-tolerant salt-sensitive) genotypes. In first assay, biomass production accumulation Na+ K+ 26 were evaluated. Genotypes AG963, AG967, AG972, BRS321, BRS324, H251, H360 H863 showed lower characterized as salt-sensitive...

Salinity is still one of the main factors that limit growth and production crops. However, currently, hydrogen peroxide (H2O2) priming has become a promising technique to alleviate deleterious effects caused by salt. Therefore, this study aimed test different leaf spraying strategies with H2O2 for acclimation sunflower plants salt stress, identifying physiological biochemical changes involved in process. The experiment was conducted completely randomized design, four replications. Initially,...

Basil (Ocimum basilicum L.) is a medicinal species of Lamiaceae family, popularly known for its multiple benefits and high levels volatile compounds. The considered to be one the most essential oil producing plants. Also cultivated in Brazil as condiment plant home gardens. objective this study was evaluate effect salinity on growth basil nutrient solution Furlani identify variables related tolerance species. first assay performed with variation five saline (0 - control, 20, 40, 60 80 mM...

ABSTRACT Irregularity or shortage of rainfall in semi-arid regions forces farmers to use low-quality water irrigate crops. The present study aimed assess the water-use efficiency and post-harvest quality ‘Sugar Baby’ mini watermelon response different electrical conductivities nutrient solution [2.5 (control), 3.5, 4.5, 5.5 6.5 dS m-1], a floating hydroponic system. experimental design was completely randomized, with four replicates. consumption, production were evaluated, as well...

Salinity commonly affects photosynthesis and crop production worldwide. However, some studies have shown that hydrogen peroxide seed priming can increase the tolerance of plants to salt stress. In this context, study aimed test hypothesis H2O2 improve photosynthetic efficiency in sunflower under The experiment was conducted a completely randomized design, with four replicates. Six treatments were tested: control (deionized water); (100 mM NaCl); 0.1 (36 h) + 100 NaCl; 1 (24 10 (12 NaCl....

The aim of this study was to evaluate the effect salt stress on contents inorganic and organic solutes, pigments essential oil in two basil genotypes cultivated hydroponic system. experiment carried out a greenhouse. Treatments were distributed randomized blocks, 2 × factorial arrangement, corresponding contrasting (‘Toscano folha de alface’ (TFA) ‘Gennaro menta’ (GM)) levels (0 - control 80 mM NaCl), with six replicates. Na+, Cl- K+ accumulation leaves, stem roots did not differ between...

ABSTRACT Although cassava is an undemanding crop in terms of soil chemical fertility, the scarcity nutrients affects productivity, and it common to cultivate soils with low natural as occurs Coastal Tablelands. In this context, present study aimed evaluate physical attributes cultivated under different managements. The was carried out municipality São Felipe, located landscape unit Tablelands, Bahia state, Brazil. Fifteen properties were selected characteristics types management. Soil...

ABSTRACT Information on spatial variability and soil carbon stocks after the conversion of Caatinga vegetation to different cropping systems is scarce. This study aimed characterize evaluate changes in emission greenhouse gases with sisal cultivation systems. The was carried out three areas city Valente, Bahia, two that had been cultivated for 20 years either a traditional (TSC) or alternative (ASC) system, third area containing natural vegetation. soils were sampled at 40 sampling points 15...

Esse estudo teve como objetivo avaliar o efeito de diferentes níveis salinos da água irrigação no crescimento inicial minimelancia cv. Sugar Baby através técnicas estatísticas univariada e multivariada. O experimento foi desenvolvido em casa vegetação na Universidade Federal do Recôncavo Bahia, Cruz das Almas, BA. As sementes foram semeadas bandejas plásticas polietileno contendo substrato composto fibra coco húmus proporção 3:1 (v/v). delineamento utilizado inteiramente casualizado com...

ABSTRACT The use of resources derived from the agricultural property itself to meet needs producers promotes reduction costs with commercial inputs and recycling by-products, among them liquid waste cassava flour production, called wastewater, which can be an important fertilization source. This study aimed evaluate growth production Capsicum chinense Jacq., as a function wastewater doses associated mineral fertilizer proportions. experiment was conducted in greenhouse, completely randomized...

ASPECTOS BIOQUÍMICOS E FLUORESCÊNCIA DA CLOROFILA A EM PLANTAS DE MINIMELANCIA HIDROPÔNICA SOB ESTRESSE SALINO* LAÍS MONIQUE GOMES DO Ó1, ALIDE MITSUE WATANABE COVA2, PETTERSON COSTA CONCEIÇÃO SILVA3, HANS RAJ GHEYI4, ANDRÉ DIAS AZEVEDO NETO5, ROGÉRIO FERREIRA RIBAS6 1Doutoranda em Engenharia Agrícola da Universidade Federal do Recôncavo Bahia, Rua Rui Barbosa, s/n, Cruz das Almas, Brasil laisnique@hotmail.com. 2Pós-Doutoranda no Programa de Pós-graduação Brasil, alidewatanabe@yahoo.com.br....

Soil salinization after cultivation of crops irrigated with saline water is commonly observed and may limit the development subsequent crops. The objective this study was to monitor salinity in soil evaluate growth, production, consumption use efficiency eggplant crop using drip irrigation pulse brackish water. experiment conducted a protected environment, following an experimental design randomized blocks different treatments increased time, especially combination when highest level. In...

Information and available knowledge of the soils Sertanejo pediplain are relatively scarce restricted to survey data. Researches about soil characterization classification contributes different orders within a region allows information be obtained systemically based on physical, chemical, mineralogical properties soil. This study aimed evaluate genesis soils, through chemical sisal-growing region. Five profiles located in Araci, Retirolândia, St. Dominic, Valente, cities areas Bahia semiarid...

ABSTRACT: The knowledge of water consumption and the efficiency use by crops is extremely important in elaboration agronomic hydraulic projects hydroponic systems. Thus, present study determined ‘Biquinho’ pepper cultivated system using seven levels electrical conductivity nutrient solution (ECsol) 2.70, 3.64, 4.58, 5.28, 6.09, 6.90, 7.77 dS m-1 six replicates randomized blocks. used was Nutrient Film Technique (NFT). per plant at an interval ten days crop cycle (120 after transplanting)....

Noni is a fruit crop well adapted to different soil and climatic conditions. Aiming evaluate the physiological responses salinity, noni seedlings were grown in two levels of NaCl (0 100 mM) nutrient solution effects salt stress on gas exchange, chlorophyll fluorescence, photosynthetic pigments, relative water content membrane integrity assessed after 1, 10, 20, 30 40 days stress. The experimental design was completely randomized 2 × 5 factorial arrangement with four replications. Salinity...

The present work aimed to investigate the effects of mechanical impedance wax layer (wax discs were installed 0.1 m deep) on root system deepening citrus seedlings growing in columns with sand and nutrient solution. Two planting systems evaluated: direct seeding (DS) (PS) (plants obtained from seed germination tubes). experiments carried out a sequence: first resistance levels (0.14 2.7 MPa) penetration two (DS PS). second evaluated plant development penetration: control strong (1.06 MPa)....

QUALIDADE DA BERINJELA IRRIGADA COM ÁGUAS SALOBRAS VIA GOTEJAMENTO CONTÍNUO E POR PULSOS LUCAS FARIAS DAMASCENO1; LOUISE ROSA MONTE BELO2; HANS RAJ GHEYI3; ALIDE MITSUE WATANABE COVA4; GEOVANI SOARES DE LIMA5 LARA JESUS MARQUES6 1 Mestrando em Engenharia Agrícola da Universidade Federal do Recôncavo Bahia, Rui Barbosa, 710, Centro, 45330-000, Cruz das Almas, Brasil. E-mail: lucas_farias13@hotmail.com 2 Engenheira Agrônoma, louiserosamonte@gmail.com 3 Professor Visitante hgheyi@gmail.com. 4...