Atributos Químicos De Solo Fertirrigado Com Água Residuária No Semiárido Brasileiro

No presente estudo objetivou-se analisar o teor de macro e micronutrientes de folhas de milho (Zea mays L.) cultivado em solo fertilizado com vermicomposto de lodo de curtume e irrigado com água residuária doméstica. O arranjo dos tratamentos consistiu em um fatorial 2x6, sendo dois tipos de irrigação: água de abastecimento (A) e água residuária doméstica (R); e seis tipos de adubação: T1: Solo controle, sem adubação química e sem vermicomposto; T2: Solo + NPK; T3: Solo + vermicomposto de lodo primário; T4: Solo + P + vermicomposto de lodo primário; T5: Solo + P + vermicomposto de lodo de caleiro e T6: Solo + vermicomposto de lodo de caleiro, em delineamento inteiramente casualizado (DIC), com cinco repetições. Para a análise do tecido foliar coletou-se, de cada planta, a folha inteira oposta e abaixo da primeira espiga (superior), excluída a nervura central por ocasião do aparecimento da inflorescência feminina. Os resultados apontam que tanto a água residuária quanto o vermicomposto de lodo de curtume constituem boa fonte de nutrientes para as plantas de milho, uma vez que os teores de macro e micronutrientes nas folhas mostraram-se satisfatórios, não tendo sido observado nenhum sinal ou sintoma de toxidez. Apesar de certa fragilidade da análise foliar servir como ferramenta exclusiva para avaliação do estado nutricional das plantas, este estudo, pioneiramente, aponta para a potencialidade do uso da água residuária de origem doméstica e de vermicomposto de lodo de curtume (em associação) na cultura do milho, motivando a realização de novas pesquisas.

Section: +unclassified

“…Esses resultados podem ser explicados pela maior biodisponibilidade dos elementos na água residuária, conforme demonstrado também em outros estudos (Almeida et al, 2012;Costa et al, 2012;Andrade-Filho et al, 2013;Rocha et al 2014).…”

Section: (Tabela 4)unclassified

Teor de nutrientes em folhas de milho fertilizado com vermicomposto de lodo de curtume e irrigado com água residuária doméstica

Malafaia¹,

Araújo²,

Leandro³

et al. 2016

“…Esses resultados podem ser explicados pela maior biodisponibilidade dos elementos na água residuária, conforme demonstrado também em outros estudos (Almeida et al, 2012;Andrade-Filho et al, 2013;Rocha et al 2014).…”

Section: Resultsunclassified

Section: +unclassified

Untitled

2016

1022-1022Ambiente & Água -An Interdisciplinary Journal of Applied Science ISSN 1980-993X -doi:10.4136/1980 The following list (Table 1) includes the names and affiliations of all reviewers that evaluated the submissions processed for Volume 11, 2016 of Revista Ambiente & Água, including manuscripts that were accepted and published in one of the four annual issues and also manuscripts submitted and rejected in 2016 up to October 10, 2016. It may therefore include the names of reviewers that completed their evaluations between September, 2015 and October, 2016. We are deeply indebted to all of them that voluntarily and anonymously spent their precious time to support the journal, and contributed immensely to the quality of the published articles. We gratefully acknowledge their professional work and outstanding product. Note: 1) Some of these reviewers evaluated more than one manuscript; 2) This list includes reviewers that evaluated submissions that were not accepted for publication, in addition to the ones published in 2016.As seen in Table 2, 21 reviewers are from international institutions. This is an indication that the journal is gaining international acceptance and inclusion. ABSTRACTThis paper discusses the reverse logistics of empty agrochemical containers, the partners involved, and it focuses on the participation of the Agricultural Defense Agency of the São Paulo state government in reducing the risk of water and soil contamination in order to preserve these resources for future generations. O sistema de logística reversa e o papel da fiscalização governamental para a preservação do solo e da água: o caso das embalagens vazias de defensivos agrícolas RESUMO Este trabalho tem por objetivo demonstrar como a logística reversa das embalagens vazias de agrotóxicos funciona, quais são os parceiros envolvidos, focando na participação da Defesa Agropecuária do governo do Estado de São Paulo, na redução dos riscos de contaminação de água e solo, com o objetivo de preservar estes recursos para as gerações futuras.Palavras-chave: agricultura, agrotóxico, contaminação ambiental. DISCUSSIONConsidered a regulatory landmark in 1989, a Brazilian federal law first demonstrated the country's concern with the handling and disposal of pesticide containers. Previously, most of the focus was on pesticide efficiency and most of the containers were made of glass, not of plastic as they are today. The environment was still not considered an important concern, and even today Brazil is the largest consumer of pesticides worldwide. The correct handling and disposal of pesticide containers is therefore of primary importance in public policy. Brazil's Federal Laws 7802 (Brazil, 1989), 9974 (Brazil, 2000 and Decree 4074 (Brazil, 2002) regulate the obligation to return empty pesticide containers to retailers or producers. In 2010, reverse logistics was defined by Federal Law 12305 (Brazil, 2010), which created the National Policy on Solid Waste. According to this law, reverse logistics can be understood as a set of actions...

“…When comparing the quantities of nutrients in the effluent with the amounts in synthetic formulations to meet crop demand, the values are generally very small, since the quantities demanded by plants are high, especially macronutrients. At the same time, effects of using the effluent on chemical attributes of the soil are very variable among works published in literature (Sandri et al, 2009;Andrade Filho et al, 2013;Oliveira et al, 2016;Silva et al, 2016;Malafaia Rev. Ambient.…”

Section: Chemical Attributes Of the Soilmentioning

confidence: 99%

Chemical attributes of soil irrigated with treated sewage effluent and cultivated with bell pepper

Júnior¹,

Sandri²,

Figueiredo³

et al. 2019

The use of treated sewage effluents (TSE) for irrigation purposes is a viable alternative for wastewater reuse and nutrient supply to the soil, which represent the two main environmental benefits. This work therefore evaluated the effect of the application of TSE on the quantity of nutrients added to the soil and changes in the chemical attributes of a Red-Yellow Latosol in the layer from 0.0 to 0.2 m cultivated with the bell pepper F1 Canary hybrid and surface drip irrigated. The experiment was carried out under field conditions from September 2015 to January 2016 in a randomized block statistical design with four replications, including the following treatments: river water, TSE, river water with base fertilization, TSE with base fertilization, TSE with cover fertilization, and TSE with cover and base fertilization. Irrigation of the bell pepper cultivation with TSE increased the level of potassium but did not affect the levels of phosphorus, organic matter and pH of the soil at the end of the growing cycle. The following amounts of nutrients were added to the soil by irrigation with TSE: 10 kg ha-1 of total nitrogen, 10 kg ha-1 of total potassium and 0.5 kg ha-1 of total phosphate. In general, TSE induced greater productivity of the peppers than those irrigated with river water, even when including mineral fertilization.