Doses of Crotalaria juncea: Residual effect on zucchini and maize crop in sequence to broccoli

Abstract

RESUMOAmounts of N from green manures not absorbed in the first cycle can be absorbed by the subsequent crops. Therefore, it is important to quantify and monitor the residual effects of green manure to increase the agronomic benefits of its use in cropping systems. Our purpose was to study the residual effect of doses of the Crotalaria juncea green manure applied in broccoli crop in the zucchini-maize succession. This study was carried out in a crop succession system organized in three crops, with seven treatments and four major doses of green manure as 0, 3, 6, and 9 t ha -1. The control treatments consisted of a mineral fertilization, a treatment with 25 t ha -1 compost, and another as absolute control without organic compost or mineral fertilizer. The experimental plot consisted of five rows spaced 0.8 m with 3 m in length. The experimental design was a completely randomized block with four replications in a split-plot scheme in time for growth with variables of adjustment of statistical models by the response surface methodology. With the highest dose of green manure, the yield of zucchini plants was greater than the yield with 25 t ha -1 compost control and similar with mineral fertilizer. As for the maize yield in the dose of 9 t ha -1 green manure, the yield was superior only to absolute control. There was a residual effect of C. juncea mass, which was applied in broccoli crop for growth and yield of zucchini and maize grown in succession. The residual effect is dependent on the amount of weight of C. juncea applied, with the greatest effects in larger doses.

Compost, bokashi y microorganismos eficientes: sus beneficios en cultivos sucesivos de brócolis

“…El efecto residual depende de la cantidad de nutriente suministrada, cantidad de nutriente removido por la primera cultura, cantidad de nutriente remanente en el suelo y necesidad nutricional del siguiente cultivo (Diniz et al, 2017, Suarez-Tapia et al, 2018, Suthamathy y Seran 2013. Aunque existen relatos del efecto residual del compost y bokashi, aplicados solos o en conjunto con otros abonos orgánicos (Suthamathy y Seran, 2013), en esta investigación no ocurrió tal resultado.…”

“…La fertilización puede afectar positivamente el primer cultivo y cultivos subsecuentes, lo que se conoce como efecto residual, que dependerá de las características del suelo, tipo y dosis de fertilizante utilizado y cantidad de nutrientes removidos por el primer cultivo (Diniz et al, 2017;Suarez-Tapia et al, 2018;Vargas et al, 2017).…”

Produção de duas espécies do gênero Talinum em função de doses de composto orgânico

“…Para alface foi confirmado os efeitos benéficos da adição de composto orgânico com aumento na massa e nos teores de nutrientes (ABREU et al 2010; SHAHEIN; AFIFI; ALGHARIB, 2014), sendo encontrado valores superiores a 40% na produtividade, em comparação ao controle (SEDIYAMA et al, 2016). Desta forma, o efeito residual da matéria orgânica adicionada pode ocorrer a longo prazo sobre culturas cultivadas em sucessão (DINIZ et al 2017;LANNA et al 2018) ou a médio e pequeno prazo sobre a cultura implantada após a adição do composto (CANDIAN;CARDOSO, 2015;SILVA et al 2015), conforme observados no acúmulo de massa nas plantas de T. triangulare e T. paniculatum (Tabelas 4 a 5).…”

“…Por esse motivo, o uso de fertilizantes orgânicos é uma alternativa para a melhoria da qualidade do solo em propriedades agrícolas que cultivam hortaliças (ZIECH et al 2014;OLIVEIRA et al, 2014). Ademais, dependendo do seu grau de decomposição pode ter efeito imediato no solo pela melhor agregação e retenção de água, maior capacidade de troca catiônica (CTC) e pela disponibilidade de nutrientes (CANDIAN;CARDOSO, 2015;DINIZ et al, 2017). Além disto, há ainda os aspectos biológicos que estão relacionados com microrganismos benéficos encontrados na matéria orgânica (ZANDONADI et al, 2014).…”

Successive crops of broccoli, green corn and pea after taro (Colocasia esculenta)-sunn hemp (Crotalaria juncea) consortium

“…Vegetables are highly nutrient-demanding crops, and high yields are usually dependent on the application of high doses of fertilizers, especially nitrogen fertilizers, raising the cost of production. There are several studies on legumes as green manure vegetable crops (Puiatti et al,2015;Zandvakili et al, 2017;Diniz et al, 2017;Adekiya et al, 2019), indicating a reduction in the need for nitrogen fertilizers (Yao et al, 2017). However, it is necessary to develop combinations of species and management forms that associate the availability of N of the legume and organic matter to the needs of the vegetables to synchronize the mineralization and the nutrient demand by the plants during the growth.…”