The peanut crop, owing to its microbiological and nutritional aspects, is of great economic importance for agriculture and the food industry. However, salt stress can negatively affect nutrient uptake and plant growth. The objective of this study was to evaluate the growth and foliar nutrient concentrations of peanut plants subjected to irrigation with saline water and different forms of organomineral fertilization. The experiment was conducted in a greenhouse in a completely randomized design (5 × 2 factorial scheme) with five forms of fertilization (F1 = 100% mineral; F2 = 100% bovine biofertilizer; F3 = 100% vegetal ash; F4 = 50% mineral + 50% bovine biofertilizer; and F5 = 50% mineral + 50% vegetal ash), two levels of electrical conductivity of the irrigation water (ECw) (1.0 and 5.0 dS m-1), and five replicates. Salt stress inhibited plant growth and the number of leaves, but increased the average stem diameter with the use of 100% bovine biofertilizer and higher salinity water. When ECw of 5.0 dS m-1 was used along with the bovine biofertilizer (100%), the P concentration in plants increased. The K concentration was reduced in plants fertilized with bovine biofertilizer (100%) and vegetal ash (100%), while Mg concertation was reduced in plants fertilized with bovine biofertilizer (100%) or mineral fertilizer (50%) + bovine biofertilizer (50%) with irrigation water of 5.0 dS m-1.

The use of organo-mineral fertilizer is an alternative measure to mitigate salt stress in semiarid regions. Thus, the objective of this work was to evaluate the physiological indexes of peanut crops under irrigations with fresh and brackish waters and applications of organo-mineral fertilizers. The experiment was conducted from June to September, 2019, at the Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), in Redenção, state of Ceará, Brazil, using a completely randomized experimental design in a 5 × 2 factorial arrangement, with four replications. The treatments consisted of five soil fertilizers (F1= 100% NPK mineral fertilizer at the recommended rate; F2= 100% bovine manure-based biofertilizer; F3= 100% plant ash; F4= 50% mineral fertilizer and 50% bovine manure-based biofertilizer; and F5= 50% mineral fertilizer and 50% plant ash); and two salinity levels (electrical conductivities) of the irrigation water (1.0 and 5.0 dS m-1). Photosynthetic rate, transpiration, stomatal conductance, leaf temperature, internal CO2 concentration, water use efficiency, and chlorophyll index of the plants were evaluated at 40 and 54 days after sowing (DAS). Plants irrigated with fresh water presented higher stomatal conductance, photosynthetic rate, and transpiration, regardless of the fertilizer used. The use of 100% bovine manure-based biofertilizer resulted in decreases in salt stress and increases in water use efficiency at 40 DAS, and decreases in leaf temperature and increases in relative chlorophyll content at 54 DAS.

Carnauba (Copernicia spp.) is a palm tree native to the Brazilian semi-arid region, valued for its significant economic, social, and environmental importance. This resilient species possesses adaptive mechanisms that enable it to endure prolonged periods of soil water scarcity and conditions of flooding and salinity. However, despite its relevance, there is a notable lack of scientometric data on this species in the literature, representing a significant research gap. This study aimed to analyze the state of research on carnauba palm from 2007 to 2022. Datasets were collected from the Web of Science central database, totaling 658 publications related to the terms “carnauba” or “copernicia”. The bibliometric software VOSviewer was used to create visual maps of keyword co-occurrence networks, providing deeper insights into the progress and research trends on the topic. Since 2014, the number of publications on carnauba has steadily increased, peaking between 2019 and 2021. The most prominent focus in these articles is on carnauba wax, with extensive research on its properties and applications in the food production chain. This significance is also reflected in the keyword co-occurrence networks. However, studies combining carnauba with soil sciences remain underexplored. Given carnauba’s importance in environmental and soil conservation, future research linking these areas could become a key avenue for advancing knowledge on the subject.

Os efeitos depressivos causados pelo estresse salino são responsáveis pela diminuição da produtividade das culturas nas regiões áridas e semiáridas. Entretanto, esses efeitos podem ser minimizados com diferentes estratégias de manejo, como a utilização de genótipos e formas de adubação. Diante desse contexto, objetivou-se avaliar a produtividade de dois genótipos de amendoim, submetidos a níveis crescentes de salinidade e duas formas de adubação. Utilizou-se o delineamento inteiramente casualizado (DIC), fazendo uso do esquema fatorial 3 x 2 x 2, com 4 repetições. O primeiro fator correspondeu aos níveis de salinidade da água de irrigação (1,0; 3,0; e 5,0 dS m-¹). O segundo fator compreendeu dois genótipos (Acesso 26 e Acesso 8) e o terceiro fator correspondeu a dois tipos de adubação (mineral, com NPK; orgânica, com biofertilizante bovino). Foram avaliadas as seguintes variáveis: comprimento de vagem, diâmetro de vagem, número de vagens, massa seca da casca, massa seca da vagem e a produtividade. A irrigação com água de condutividade elétrica 1,0 dS m-1 não inibiu os componentes de produção dos genótipos de amendoim independentemente do tipo de adubação. O acesso 26 quando adubado com biofertilizante bovino e irrigado com água de alta salinidade foi mais eficiente do que o acesso 8, demonstrando maior número de vagens, massa seca da vagem e a produtividade. A utilização do adubo mineral não foi capaz de mitigar os efeitos nocivos da água de alta salinidade, afetando o número de vagens, massa seca de vagem e a produtividade de ambos os genótipos.