Sample records for copper sulfates
from WorldWideScience.org

Sample records 1 - 3 shown.



1

Adubação da cana-de-açúcar: IX - Experimentos preliminares com micronutrientes/ Fertilizer experimeits with sugar cane: IX - Preliminary results with minor elements

Alvarez, R.; Wutke, A. C. P.
1963-01-01

Resumo em português Neste trabalho são apresentados os resultados obtidos era três experimentos para verificar possíveis deficiências de micronutrientes e de magnésio em solos tipos terra-roxa-misturada e massapê-salmourão, cultivados há mais de quinze anos com cana. Foram feitas aplicações de sulfato ferroso, tetraborato de sódio, sulfato de magnésio, sulfato de manganês, sulfato de cobre, sulfato de zinco e molibdato de amônio, nos sulcos de plantio, na presença de NPK. Nos (mais) solos massapê-salmourão, os micronutrientes boro, molibdênio, ferro e cobre determinaram aumentos na produção de cana. Resumo em inglês In this paper are presented the results obtained with three experiments on the application of minor elements and magnesium to sugar cane, on soils known as "terra-roxa-misturada" and "massapê-salmourão" which for many years had been cultivated with this graminea. The treatments with four replications, in randomized blocks, were as follows: 1) NPK (control), 2) NPK + Fe, 3) NPK + B, 4) NPK + Cu, 5) NPK + Mn, 6) NPK + Zn, 7) NPK + Mo, 8) NPK + Mg and 9) NPK + (Fe + B + Cu (mais) + Zn + Mg + Mn + Mo). The nitrogen, phosphorus and potassium were applied as ammonium sulfate, superfosfate and potassium chloride at the rates of 150 kg/N, 100 kg/P2O5 and 150 kgK2O per hectare. The elements were applied in the furrows in addition to the basic fertilization: iron, magnesium, manganese, copper and zinc, as sulfates; boron, as borax and molybdenum as ammonium molybdate. The results indicated that boron, iron, copper and molybdenum gave a yield increase in the soil massapê salmourão, whereas ou "terra-roxa-mistura da", effects were not significant.

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2

Sensibilidade a cobre, estreptomicina e oxitetraciclina em Xanthomonas spp. associadas à mancha-bacteriana do tomate para processamento industrial/ Sensitivity to copper streptomycin and oxitetracyclin of xanthomonads associated to bacterial spot in processing tomatoes

Quezado-Duval, Alice Maria; Gazzoto Filho, Ademir; Leite Júnior, Rui P.; Camargo, Luis Eduardo A.
2003-12-01

Resumo em português Apesar de amplamente empregados em lavouras de tomate para processamento industrial no Brasil, fungicidas cúpricos e antibióticos registrados para uso agrícola nem sempre resultam em controle eficiente das bacterioses que afetam a cultura. O aparecimento de estirpes resistentes é uma das causas dessa baixa eficiência. Avaliou-se, in vitro, a sensibilidade a cobre, estreptomicina e oxitetraciclina de 389 isolados de Xanthomonas spp. associadas à mancha-bacteriana do (mais) tomateiro, sendo 92 de X. axonopodis pv. vesicatoria (60 do grupo "A"/raça T1 e 32 do "C"/raça T3), 93 de X. vesicatoria (grupo "B"/raça T2) e 204 de X. gardneri (grupo "D"/raça T2). Os isolados foram obtidos de plantas doentes em campos comerciais de tomate para processamento industrial nos estados de Goiás, Minas Gerais, Pernambuco e Bahia, nos anos de 1995 a 1998 e em 2000. Alíquotas de 5 ml de suspensões bacterianas foram depositadas em meio Nutriente-Ágar suplementado com sulfato de cobre, nas concentrações de 50 e 200 µg/ml; sulfato de estreptomicina, a 25 e 200 µg/ml e cloridrato de oxitetraciclina, a 25 µg/ml. Nenhum isolado foi resistente a oxitetraciclina, como também nenhum foi resistente ao cobre na concentração de 200 µg/ml do sulfato de cobre. No entanto, houve diferença entre isolados quanto à sensibilidade ao sulfato de cobre na concentração de 50 µg/ml e ao sulfato de estreptomicina nas duas concentrações empregadas. As freqüências de isolados de X. gardneri, X. axonopodis pv. vesicatoria (grupos "A" e "C") e X. vesicatoria resistentes à estreptomicina (25 µg/ml do produto usado) foram, respectivamente, 98%, 38% e 2%, ao passo que, ao cobre, foram, respectivamente, 48%, 4% e 74%. Todos os isolados do grupo "C" foram sensíveis à estreptomicina e 97% sensíveis ao cobre. Resumo em inglês Copper fungicides and antibiotics are frequently used to control bacterial pathogens in processing tomatoes in Brazil. However, failure of control is common and can be caused by the presence of resistant strains. In vitro tests were carried out to evaluate the sensitivity to copper, streptomycin and oxitetracyclin of 389 xanthomonads strains isolated from tomato plants with bacterial spot symptoms: 92 of X. axonopodis pv. vesicatoria (60 strains group A /race T1 and 32 gr (mais) oup C /race T3), 93 of X. vesicatoria (group B/race T2) and 204 of X. gardneri (group D/race T2). The strains were obtained from commercial fields in the states of Goiás, Minas Gerais, Pernambuco, and Bahia from 1995 to 1998 and in 2000. Bacterial suspension aliquots of 5 ml were deposited on Nutrient-Agar medium amended with copper sulfate (at concentrations of 50 and 200 µg/ml), streptomycin sulfate (25 and 200 µg/ml) or oxitetracyclin hydrocloridrate (25 µg/ml). None of the strains was resistant to oxitetracyclin or to copper at 200 µg/ml of copper sulphate. However, strains differed in their sensitivity to 50 µg/ml copper and to streptomycin sulfates (both concentrations used). The frequencies of X. gardneri, X. axonopodis pv. vesicatoria (groups "A" and "C") and X. vesicatoria resistant strains to streptomycin (25 µg/ml of streptomycin sulphate) were, respectively, 98%, 38% and 2%, whereas to copper the frequencies were 48%, 4% and 74%, respectively. All strains of group C/race T3 were sensitive to streptomycin and 97% sensitive to copper. Ninety eight percent of 'X. gardneri' strains, 38% of X. axonopodis pv. vesicatoria and only 2% of X. vesicatoria were resistant to streptomycin (25 µg/ml of the product used) whereas the frequencies of copper resistant strains were 48%, 4% and 74%, respectively for the three species of Xanthomonas.

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3

Adubação da cana-de-açúcar: XV - experimentos com micronutrientes nas regiões canavieiras do estado de São Paulo/ Fertilizer experiments with sugar cane: XV - results of micronutrients application

Alvarez, Raphael; Wutke, Antônio Carlos Pimentel; Arruda, Hermano Vaz de; Godoy Júnior, Gentil
1979-01-01

Resumo em português São apresentados os resultados de 23 experimentos em regiões canavieiras paulistas, para avaliar possíveis respostas da cana-de-açúcar a micronutrientes. Fizeram-se aplicações isoladas de sulfato ferroso, tetraborato de sódio, sulfato de cobre, sulfato de zinco, sulfato de manganês e molibdato de amônio, nos sulcos de plantio e na presença de adubação NPK Em apenas um dos experimentos verificou-se efeito significativamente favorável à aplicação de micronu (mais) trientes, no caso, cobre e molibdênio. Com base nos resultados obtidos, corroborados por análises foliares em trabalho paralelo e conduzido à mesma época, concluiu-se que, nas condições do ensaio, deficiências de micronutrientes não constituem problema para a lavoura canavieira no Estado de São Paulo. Resumo em inglês The results obtained with twenty three experiments on the application of micronutrients to sugar cane are presented in this paper. The experiments were installed to evaluate the possible occurrence of micronutrient deficiencies in soils of São Paulo state that had been more intensively cultivated with this crop. Therefore, in the localization of the field plots care was taken securing a large variation of conditions, especially those of the soil that are related to avail (mais) ability of micronutrients. The experiments were planted in randomized block designs with four replications. The treatments were as follows: 1. 000 (general control); 2. NPK (control); 3. NPK + Fe; 4. NPK + B; 5. NPK + Cu; 6. NPK + Zn; 7. NPK + Mn; 8. NPK + Mo. The nitrogen, phosphorus and potassium were applied as ammonium sulfate, superphosphate and potassium chloride, at the rates of 80kg/N, l00kg/P2O5 and 120kg/K2O per hectare. The micronutrients were applied in the furrows in addition to the basic fertilization: iron, manganese, copper and zinc, as sulfates; boron, as borax, and molybdenum as ammonium molybdate. In accordance with the purpose of the study the soils of the experiments showed great variation in the characteristics that are involved with the micronutrients availability, as the pH and the original fertility level. In spite of this, in only one of the experiments the micronutrients, cooper and molybdenum in the case, gave yield increases; even so, the responses were not clearly related to the soil characteristics. The results indicate that problems concerning micronutrient deficiencies are not to be expected in the normal conditions of the sugar cane culture in São Paulo state, Thus, the possible occurrences of such anomalies, until now, must be related to fortuitous events.

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