Potencialidade do uso do lodo de esgoto como fonte de macronutrientes no cultivo de milho (Zea mays L.), no município de Maringá - PR
Carregando...
Data
2003-06
Autores
Gobbi, Marlene Aparecida [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
A potencialidade do biossólido (lodo de esgoto), como fonte de macronutrientes e a sua economicidade no uso agrícola em substituição à adubação mineral, através do valor agregado dos nutrientes N, P, K, Ca, Mg, e S, foi avaliada, em campo, em solo Latossolo Vermelho Distrófico do terceiro Planalto do Estado do Paraná. O experimento foi instalado em quatro semeaduras (anos agrícolas 1,2) utilizando-se o biossólido produzido na Estação de Tratamento de Esgoto, ETE-1, da SANEPAR - Maringá-PR, nas doses de 0, 6, 20, 40, 60, 80 t ha-1 para o cultivo do milho Agroceres 405, comparando-o com uma dose testemunha de fertilizante mineral com 100, 80 e 80 kg ha-1 de N, P, K, respectivamente. O biossólido foi aplicado ao solo a lanço e incorporado por gradagem na profundidade média de 20 cm. O tratamento com adubação mineral foi aplicado e incorporado ao solo na linha de semeaduras na época da semeadura, o nitrogênio foi aplicado em cobertura aos 30 dias da semeadura. Nos dias da incorporação do resíduo, nas quatro semeaduras foram coletadas amostras de solos de cada parcela numa profundidade de 0-20 cm, secadas tamisadas e acondicionadas em sacos de papel para posterior análises. Após 30, 60, 90 e 120 dias da incorporação do biossólido ao solo, as plantas (parte aérea + raízes), foram cortadas, lavadas, trituradas, secadas a 50C, pesadas e moídas, ficando assim prontas para a análise, a qual foi realizada com digestão nitro-perclórica. Os teores de macronutrientes no solo e nas plantas foram determinados por espectrometria de absorção atômica. Nas quatros semeaduras, aos 120 dias da germinação do milho foi avaliada a produtividade em kg de grãos do milho produzido Os resultados mostraram que a produção de material seco g.kg-1 teve um aumento diretamente proporcional com as doses de material aplicado... .
It was evaluated in dystrophic red latosol soil, located in the third plateau of Paraná State, .the potentiality of biosolid (sewage sludge) as macronutrient source and the economic value in the use in agriculture totally substituting to mineral fertilization and adding nutrients like N, P, K, Ca, Mg, and S. The experiment was carried on in four plantations (agricultural years 1 and 2) using biosolid produced in the Treatment Sludge Station ETE-1 SANEPAR, Maringá – PR, dosed in 0, 6, 20, 40, 60, 80 t ha-1 as fertilizer to corn type Agroceres 405, comparing to one witness dose of the mineral fertilizer with 100, 80 e 80 kg ha-1 of N, P, K, respectively. The biosolid was applied in soil by throwing and incorporated by revolving the soil mechanically in a deepness of 20 cm. The treatment fertilized with mineral was applied and incorporated into the soil in the plantation line during the period of sowing, and the nitrogen was applied covering thirty days after sowing. It was collected soil samples of each plot of 0-20 cm deep in 0, 30, 60, 90 and 120 days, which were dried, sifted and put in paper bags to latter analyses. After 30, 60, 90 and 120 days of biosolid incorporation into the soil, plants (aerial and roots portions) were cut, washed, ground and dried at 50ºC, provided its weight and ground to be prepared to analysis which was carried on nitro-perchloric digestion. The macronutrients contents into the soil and in the plants were determined by atomic absorption spectrometry. In four plantations, 120 days after corn germination it was evaluated the productivity of the corn seeds (kg). The results showed the production of dried material g.kg-1 presented an increase proportionally to doses of the applied material. The use of biosolid during two years showed pH reduction, increase of , P, K, Ca, Mg, S, Al., MO, SB, CTC contents, potential... (Complete abstract, click electronic address below).
It was evaluated in dystrophic red latosol soil, located in the third plateau of Paraná State, .the potentiality of biosolid (sewage sludge) as macronutrient source and the economic value in the use in agriculture totally substituting to mineral fertilization and adding nutrients like N, P, K, Ca, Mg, and S. The experiment was carried on in four plantations (agricultural years 1 and 2) using biosolid produced in the Treatment Sludge Station ETE-1 SANEPAR, Maringá – PR, dosed in 0, 6, 20, 40, 60, 80 t ha-1 as fertilizer to corn type Agroceres 405, comparing to one witness dose of the mineral fertilizer with 100, 80 e 80 kg ha-1 of N, P, K, respectively. The biosolid was applied in soil by throwing and incorporated by revolving the soil mechanically in a deepness of 20 cm. The treatment fertilized with mineral was applied and incorporated into the soil in the plantation line during the period of sowing, and the nitrogen was applied covering thirty days after sowing. It was collected soil samples of each plot of 0-20 cm deep in 0, 30, 60, 90 and 120 days, which were dried, sifted and put in paper bags to latter analyses. After 30, 60, 90 and 120 days of biosolid incorporation into the soil, plants (aerial and roots portions) were cut, washed, ground and dried at 50ºC, provided its weight and ground to be prepared to analysis which was carried on nitro-perchloric digestion. The macronutrients contents into the soil and in the plants were determined by atomic absorption spectrometry. In four plantations, 120 days after corn germination it was evaluated the productivity of the corn seeds (kg). The results showed the production of dried material g.kg-1 presented an increase proportionally to doses of the applied material. The use of biosolid during two years showed pH reduction, increase of , P, K, Ca, Mg, S, Al., MO, SB, CTC contents, potential... (Complete abstract, click electronic address below).
Descrição
Palavras-chave
Milho - Cultivo, Milho - Nutrição, Solos - Fertilidade, Produtividade agrícola, Biossólido, Reciclagem de nutrientes
Como citar
GOBBI, Marlene Aparecida. Potencialidade do uso do lodo de esgoto como fonte de macronutrientes no cultivo de milho (Zea mays L.), no município de Maringá - PR. 2003. xi, 122 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2003.