Doses De Fósforo E Potássio Em Plantas De Amendoim Na Presença E Ausência De Adubação Foliar

Meneghette, Hugo Henrique Andrade; Lazarini, Edson; Bossolani, João William; Parra, Lucas Fenelon; Hayashi, Futoshi

doi:10.18011/bioeng2017v11n2p125-134

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…A menor porcentagem de emergência das mudas de berinjela produzidas com 100% de moinha de café (Tabela 1) pode ser devido a menor concentração de fósforo desse resíduo (6,0 g dm -3 P) em relação ao lodo de curtume (10,35 g dm -3 P), já que esse macronutriente pode limitar o desenvolvimento das mudas, desde o início de seu ciclo vital (Lima et al, 2018). Razão essa, devido o fósforo ser parte dos nucleotídeos usados no metabolismo energético das plantas (Adenosina Trifosfato), logo, geração de reservas de energia (Meneghette et al, 2017).…”

Section: Resultsunclassified

Lodo de curtume desidratado e moinha de café compostada: resíduos agroindustriais de potencial agrícola para produção de mudas de Solanum melongena L.

Ferreira,

Berilli,

Souza

et al. 2024

Rev. DELOS

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O aproveitamento de resíduos agroindustriais, localmente disponíveis, como substrato, com critérios, tem-se mostrado viável ambientalmente, agronomicamente e financeiramente. Assim sendo, objetivou-se verificar o potencial agronômico do lodo de curtume desidratado em mistura com moinha de café compostada, no desenvolvimento e qualidade de mudas de Solanum melongena L. Os substratos foram, em percentagem de volume (v-lodo/v-moinha), 0/100, 5/95, 10/90, 15/85, 20/80, 50/50 e 100/0, além de um comercial. Analisou-se as características de emergência, biométricas, gravimétricas, fisiológicas, atributos de raízes e qualidade das mudas. O teste de Scott-Knott (p<0,05) destacou as proporções de 10, 20 e 50% de lodo de curtume para as características biométricas, gravimétricas e de qualidade das mudas. Não houve diferenças nos atributos de raízes, assim como nos teores de flavonoides e carotenoides das folhas. Os maiores teores de clorofila/nitrogênio nas folhas foram proporcionados pela presença do lodo. A análise de correlação de Spearman indicou que a qualidade das mudas é influenciada pelo comprimento das raízes e número de folhas. Nas folhas, quanto maior o teor de clorofila, maior a quantidade de nitrogênio. Foi possível concluir que as proporções de 20 e 50% de lodo de curtume, acrescido da moinha de café, apresentaram os melhores resultados morfo-fisiológicos e de qualidade das mudas.

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Section: Resultsunclassified

Lodo de curtume desidratado e moinha de café compostada: resíduos agroindustriais de potencial agrícola para produção de mudas de Solanum melongena L.

Ferreira,

Berilli,

Souza

et al. 2024

Rev. DELOS

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“…According to Souza et al (2019), nitrogen has vital functions in plant metabolism, being a constituent of proteins, enzymes, coenzymes, nucleic acids, phytochromes and chlorophyll, besides affecting the rates of leaf initiation and expansion, while potassium controls stomatal movements and is an important metabolic activator essential for protein formation. In addition, the supply of K and P reduces the absorption of Na + and Clby plants, due to the competition between these nutrients for the absorption site (MENEGHETTE et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Cultivation of Custard-Apple Irrigated With Saline Water Under Combinations of Nitrogen, Phosphorus and Potassium

et al. 2022

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The objective of this study was to evaluate the effect of combinations of nitrogen, phosphorous and potassium doses on the production components of custard-apple irrigated with saline waters. The experiment was conducted in a greenhouse, using a Neossolo Regolítico (Entisol) of clay loam texture in Campina Grande-PB, Brazil. The treatments were distributed in a randomized block design, in a 2 × 8 factorial scheme, with three replicates, corresponding to two levels of electrical conductivity of water - ECw (0.8 and 3.0 dS m-1) and eight combinations of fertilization with nitrogen, phosphorus and potassium (100-100-100; 100-100-125; 100-125-100; 100-125-125; 125-100-100; 125-100-125; 125-125-100 and 125-125-125% of the recommendation, for the third year of cultivation). The combination of 100-100-100% corresponded to 100, 60 and 60 g of N, P2O5, K2O per plant per year, respectively. High concentrations of salts in the irrigation water reduced the number of fruits, fresh fruit mass, total number of seeds and mass of seeds of custard-apple. Plants achieved the best development when grown under 125-100-100, 125-125-125 and 100-100-100% combinations of N-P-K recommendation. Irrigation with ECw of 3.0 dS m-1 associated with the 100-125-125% combination of fertilization increased the average mass and height of the custard-apple fruits.

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“…Potassium plays na important role in physiological processes, when applied in a balanced way, it promotes improvement in osmotic regulation and the maintenance of ionic homeostasis under saline stress conditions (lIMA et al, 2018). In addition, it reduces the absorption of Na + and Clby plants, due to the competition between these nutrients for the absorption site (MENEGHETTE et al, 2017), which may reflect on the reduction of the deleterious effects of irrigation water salinity.…”

Section: Introductionmentioning

confidence: 99%

Potassium fertilization as salt stress attenuator in sour passion fruit

et al. 2023

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Water scarcity associated with irregular rainfall in the semi-arid region of Northeastern Brazil stands out as a limiting factor for agricultural production. Thus, the use of waters with high concentration of salts is an alternative to expand irrigated agriculture in this region. In this context, this study evaluated the water status, intercellular electrolyte leakage, photosynthetic pigments, and gas exchange of ‘BRS SC1’ sour passion fruit as a function of irrigation with water of different levels of salinity and potassium doses. The experiment was carried out in pots adapted as drainage lysimeters under field conditions at the Experimental Farm of the Federal University of Campina Grande in São Domingos - PB, Brazil. The experimental design was randomized blocks, in a 5 × 4 factorial scheme, whose treatments were obtained by combining two factors: five levels of electrical conductivity of irrigation water - ECw (0.3, 1.1, 1.9, 2.7, and 3.5 dS m-1), associated with four potassium doses (60, 80, 100, and 120% of the recommendation), with three replicates. Water with electrical conductivity greater than 0.3 dS m-1 reduced the relative water content, chlorophyll a and chlorophyll b contents, CO2 assimilation rate, and instantaneous water use efficiency of ‘BRS SC1’ sour passion fruit plants. The estimated potassium dose of 85% of the recommendation (equivalent to 293 g per plant per year) mitigated the deleterious effects of salt stress on stomatal conductance, transpiration, internal CO2 concentration, and instantaneous carboxylation efficiency of passion fruit ‘BRS SC1’.

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Doses De Fósforo E Potássio Em Plantas De Amendoim Na Presença E Ausência De Adubação Foliar

Cited by 5 publications

References 6 publications

Lodo de curtume desidratado e moinha de café compostada: resíduos agroindustriais de potencial agrícola para produção de mudas de Solanum melongena L.

Lodo de curtume desidratado e moinha de café compostada: resíduos agroindustriais de potencial agrícola para produção de mudas de Solanum melongena L.

Cultivation of Custard-Apple Irrigated With Saline Water Under Combinations of Nitrogen, Phosphorus and Potassium

Potassium fertilization as salt stress attenuator in sour passion fruit

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