Growing vegetables in succession in different soils and doses of phosphorus in an organomineral fertilizer

Vieira, Dinamar Márcia da Silva; Camargo, Reginaldo de; Torres, José Luiz Rodrigues; Silva, Adriane De A.; Lana, Regina Maria Quintão; Carvalho, Fábio Janoni

doi:10.1590/1807-1929/agriambi.v24n12p806-813

Cited by 6 publications

(1 citation statement)

References 16 publications

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“…Esse valor indica que os solos têm baixo teor de argila e predominância da caulinita na sua composição mineral, sendo rico em óxidos de alumínio e ferro, bem como baixa concentração de sílica. Desta forma, ressalta-se a importância de parcelar nutrientes de fácil mobilidade no solo como nitrogênio e potássio, que podem ser mais lixiviados (VIEIRA et al, 2020).…”

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Propriedades Químicas E Fertilidade Dos Solos Agrícolas De Adamantina-Sp

Nasser

Furlaneto

Tavares

et al. 2021

Nucleus

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A fertilidade do solo se destaca como um dos fatores que influenciam no rendimento da cultura. Diante do exposto objetivou-se avaliar as propriedades químicas e fertilidade dos solos agrícolas em Adamantina-SP. Foram avaliadas 114 análises de pH (CaCl2), matéria orgânica (g dm-3), P resina (mg dm-3), K, Ca, Mg, capacidade de troca catiônica (mmolc dm-3) e saturação de bases (V%); 58 análises de S (mg dm-3) e 59 de micronutrientes: Fe, Mn, Zn, Cu e B (mg dm-3). Os resultados foram tabulados e organizados em gráficos e a distribuição dos valores para cada característica expressos em porcentagem (%). Calculou-se, também, a moda ou valor de maior frequência. Concluiu-se que os solos de Adamantina-SP, de modo geral, recebem calagem, fertilizantes a base de macronutrientes e, em alguns casos, adubo orgânico de baixa permanência no solo, que influenciam diretamente na capacidade de troca catiônica e disponibilidade de P, S e B que apresentaram níveis reduzidos nos solos avaliados no estudo.

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Section: Resultado E Discussãounclassified

Propriedades Químicas E Fertilidade Dos Solos Agrícolas De Adamantina-Sp

Nasser

Furlaneto

Tavares

et al. 2021

Nucleus

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Lettuce crop fertilized with organomineral source of phosphorus and micronutrients

et al. 2022

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The use of organomineral fertilizers (OF) in the cultivation of vegetables has been considered a promising technology to provide nutrients gradually. The OFs can reduce the phosphorous (P) soil adsorption and leaching of nitrogen and potassium with the supply of some micronutrients. This study aimed to evaluate doses of OF as a source of P and micronutrients (boron and zinc) for curly lettuce cultivation. Five OF doses were evaluated: T1 = 0% (no P2O5 fertilization); T2 = 50% (75 mg/dm3 of P2O5); T3 = 100% (150 mg/dm3 of P2O5); T4 = 150% (225 mg/dm3 of P2O5); T5 = 200% (300 mg/dm3 of P2O5) of the lettuce recommended fertilization; T6 = 100% mineral fertilizer (MF) (150 mg/dm3 of P2O5). The fresh (FM) and dry mass (DM) of the lettuce shoot (aerial part), the soil nutrient level, and the plant nutritional status at harvest were evaluated. We observed that (i) the doses of 225 and 300 mg/dm3 of P2O5 via OF provided the same availability of P in the soil as the dose of 150 mg/dm3 of P2O5 of MF; (ii) the doses of 225 and 300 mg/dm3 of P2O5 of OF provided higher levels of soil boron and zinc compared to other treatments and (iii) the MF fertilization was more efficient than that of OF in the production of curly lettuce in a protected environment.

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No-till broccoli production using different cover crop residues and nitrogen doses

et al. 2023

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No-till vegetable farming is a feasible alternative to reduce erosion-induced losses and to increase soil nutrient availability, because cover crop residue protects the soil and its decomposition promotes nutrient cycling, which can improve the yield of the subsequent crop. The present study assessed the production and decomposition of cover crops and the agronomic performance of broccoli grown on this residue using different nitrogen doses in a no-till system. A randomized block design was used, in a split-split plot arrangement of main plots (cover crops), sub-plots (N doses) and sub-sub plots (decomposition times), with four repetitions. Seven cover crops were studied, as follows: [1) signal grass (SG); 2) sunn hemp (SH); 3) pearl millet (PM): 4) SG+SH; 5) SG+PM; 6) SH+PM and 7) SG+SH+PM]; in addition to four doses of nitrogen topdressing [T1) no N application (control); T2) 60 kg/ha N; T3) 90 kg/ha N and T4) 120 kg/ha N]; and five cover crop residue decomposition times: zero (cutting), 15, 30, 60 and 90 days after transplanting (DAT) the broccoli seedlings. Cover crop dry weight (DW) production, residue decomposition, and the head fresh (HFW) and dry weight (HDW) and yield (YLD) of broccoli were assessed. Among the cover crops, sunn hemp and the intercropped SG+SH treatment exhibited the lowest DW production and, along with signal grass, the shortest half-life (T½) and highest residue decomposition rate. The best-performing broccoli plants were those grown using PM, SH and a combination of both as cover crops. The highest broccoli production was obtained using sunn hemp residue, regardless of nitrogen topdressing, with HFW of 788 g/plant and YLD of 30 t/ha.

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Growing vegetables in succession in different soils and doses of phosphorus in an organomineral fertilizer

Cited by 6 publications

References 16 publications

Propriedades Químicas E Fertilidade Dos Solos Agrícolas De Adamantina-Sp

Propriedades Químicas E Fertilidade Dos Solos Agrícolas De Adamantina-Sp

Lettuce crop fertilized with organomineral source of phosphorus and micronutrients

No-till broccoli production using different cover crop residues and nitrogen doses

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