Zinc Status of New Jersey Soils

Woltz, S. S.; Toth, S. J.; Bear, Firman E.

doi:10.1097/00010694-195308000-00003

Cited by 19 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This conclusion can be drawn on the basis of the results of a pot experiment (Section 4.3) where liming highly affected the response of ryegrass to applied Zn in the two mineral soils but had only a minor influence in the two peat soils despite a significant increase in soil pH also in these soils. A similar observation was made by Woltz et al (1953) in New Jersey, USA, where an elevation of the pH from 6.0 to 7.0 decreased the Zn uptake by red clover in mineral soils but did not do so in a peat soil. Also Jeffery and Uren (1983) observed that mixing peat in an acid mineral soil reduced the decrease of Zn concentration in soil solution when the pH was elevated.…”

Section: +supporting

confidence: 79%

Plant-availability of soil and fertilizer zinc in cultivated soils of Finland

Yli‐Halla¹

1993

AFSci

View full text Add to dashboard Cite

The Zn status of cultivated soils of Finland was investigated by chemical analyses and bioassays. The effect on ryegrass of different Zn fertilizers and Zn rates was studied in pot experiments and their effect on barley and timothy in field experiments. In an uncontaminated surface soil material of 72 mineral soils and 34 organogenic soils, total Zn (Zntot) was 10.3-202 mg kg-1(median 66 mg kg-1). In mineral soils, Zntot correlated positively with clay content (r = 0.81***) and in organogenic soils negatively with organic C (r = -0.53***). Zinc bound by organic matter and sesquioxides was sequentially extracted by 0.1 M K4P2O7 (Znpy) and 0.05 M oxalate at pH 2.9 (Znox), respectively. The sum Znpy + Znox, a measure of secondary Zn potentially available to plants, was 2 - 88% of Zntot and was the lowest in clay (median 5%) and highest in peat soils (median 49%). Water-soluble and exchangeable Zn consisted of0.3 - 37% (median 3%) of Zntot, the percentage being higher in acid soils, particularly in peat soils. Zinc was also extracted by 0.5 M ammonium acetate - 0,5 M acetic acid - 0.02 M Na2-EDTA at pH 4.65 (ZnAC), the method used in soil testing in Finland. The quantities of ZnAC (median 2.9 mg dm-3, range 0.6 - 29.9 mg dm-3) averaged 50% and 75% of Znpy + Znox in mineral and organogenic soils, respectively, and correlated closely with Znpy. In soil profiles, ZnAC was with few exceptions higher in the plough layer (0 - 20 cm) than in the subsoil (30 - 100 cm). In an intensive pot experiment on 107 surface soils, four crops of ryegrass took up 2 - 68% (median 26%)of Znpy + Znox. The plant-available Zn reserves were not exhausted even though in a few peat soils the Zn supply to grass decreased over time. Variation of Zn uptake was quite accurately explained by ZnAC but increasing pH had a negative impact on Zn uptake. Application of Zn (10 mg dm-3 of soil as ZnSO4 * 7 H2O) did not give rise to yield increases. In mineral soils, increase of plant Zn concentration correlated negatively with soil pH while ZnAC was of secondary importance. In those organogenic soils in which the reserves of native Zn were the most effectively utilized, plant Zn concentration also responded most strongly to applied Zn. In two 2-year field experiments, Zn application did not increase timothy or barley yields. Zinc concentration of timothy increased from 30 mg kg-1 to 33 and 36 mg kg-1 when 3 or 6 kg Zn ha-1 was applied, respectively. The efficiency of ZnSO4 * 7 H2O alone did not differ from that of a fertilizer where ZnSO4 * 7H20 was granulated with gypsum. Zinc concentration of barley grains increased by foliar sprays of Na2Zn-EDTA but only a marginal response to soil-applied Zn (4.8 or 5.4 kg ha-1 over three years) was detected in three 3-year experiments. High applications of Zn to soil (15 or 30 kg ha-1 as ZnSO4 * 7H2O) were required to increase Zn concentration of barley markedly. In order to prevent undue accumulation of fertilizer Zn in soil, it is proposed that Zn fertilizer recommendations for field crops should be based on both soil pH and ZnAC. In slightly acid and neutral soils, even if poor in Zn, response of plant Zn concentration to applied Zn remains small while there is a high response in strongly acid soils.

show abstract

Section: +supporting

confidence: 79%

Plant-availability of soil and fertilizer zinc in cultivated soils of Finland

Yli‐Halla¹

1993

AFSci

View full text Add to dashboard Cite

show abstract

“…Os teores de zinco total dos solos analisados são semelhantes aos obtidos em solos dos USA (6,16,17,22), da URSS (7,20,23), do Paquistão (21), da India (9, 11), da União Sul-africana (14), da Austrália (10), do Brasil (12), e inferiores aos de alguns solos de Madagascar (5) e de Angola (3).…”

Section: -Resultados E Discussãounclassified

Zinco em solos do estado de São Paulo I: zinco total

Valadares

Catani²

1975

Bragantia

View full text Add to dashboard Cite

SINOPSEDeterminou-se o zinco total, com ataque perclórico-fluoridrico e espectro¬ fotometria de absorção atômica, em 227 amostras de 28 perfis pertencentes a 14 unidades representativas dos solos de São Paulo.O material de origem foi o fator preponderante a condicionar os teores de zinco dos solos. Os solos derivados de rochas básicas, os mais ricos em zinco, têm os teores médios ponderados dos horizontes A de seus perfis compreendidos entre 87 e 315 ppm; os derivados de materiais aluviais e coluviais, 53 e 84 ppm; os derivados de sedimentos modernos, entre 29 e 65 ppm; os derivados do arenito Bauru, entre 16 e 30 ppm; os derivados de sedimentos modernos arenosos, entre 1 e 17 ppm, os mais pobres em zinco.Observou-se boa correlação (r = 0,79**) entre os teores de zinco e os de óxidos de ferro dos solos.

show abstract

“…341). KHAN (1969), WOLTZ et al (1953), BROWN & JURINAK (1964), SEATZ et al (1959), IGUE & GALLO (1960), constataram em seus experimentos que a calagem acarretava redução na absorção de Zn, chegando às vezes, a causar o aparecimento de sintomas de deficiência desse micronutriente. E, finalmente, LOTT (1939) julga que a toxidez em aveia devido ao excesso de Zn no solo pode ser evitada pela adição de CaC0 3…”

Section: Influência Do Phunclassified

“…Muitos pesquisadores têm encontrado deficiência de Zn em plantas cultivadas em terrenos com altos teores de fósforo ou que receberam adubações fosfatadas pesadas (BARNETTE et al, 1936;CHAPMAN et al, 1940;ROGERS & CHIH, 1948;LABANAUSKAS et al, 1958;BINGHAM & MARTIN, 1956;WOLTZ et al, 1953;BROWN et al, 1970;BOAWN & LEGGET, 1964;ELLIS et al, 1964).…”

Section: Influência Do Teor De Fosfato Solúvelunclassified

Influência do pH e dos teores de fosfato solúvel e matéria orgânica sobre a fixação de zinco pelo solo

Silveira¹,

Mello²,

Sobrinho³

et al. 1975

An. Esc. Super. Agric. Luiz de Queiroz

View full text Add to dashboard Cite

RESUMONo presente trabalho os autores apresentam um estudo dos efeitos do pH e dos teores de fosfato solúvel em H2SO4 0,05 Ν e de matéria orgânica do solo sobre a capacidade de fixação de Zn do mesmo.Na execução do ensaio utilizaram uma técnica traçadora sendo o 65 Zn o elemento traçador.Foi concluído que as quantidades de Zn fixadas estão direta e positivamente correlacionadas com o pH, com o teor de fosfato solúvel e de matéria orgânica dos solos. INTRODUÇÃOEm algumas áreas do Estado de São Paulo têm-se verificado deficiência de zinco disponível principalmente em culturas de milho, batatinha, citros e café. Nestas duas últimas chega a ser, em certos casos, uma prática rotineira a correção de deficiência do referido nutriente por meio de pulverização foliar.Deve-se ressaltar que em alguns ensaios realizados neste Estado, em que se esperavam reações favoráveis à aplicação de Zn ao solo, os resultados obtidos não corresponderam às espectativas. Os motivos reais dessa não correspondência são desconhecidos, não estando, porém, afastada a hipótese da fixação do nutriente no solo.Várias são as causas que concorrem para a fixação do Zn. Neste estudo os autores se propõem a examinar os efeitos do pH e dos teores de fosfato solúvel e de matéiia orgânica do solo. REVISÃO DA LITERATURAA literatura referente à fixação do Zn no solo é relativamente ampla, ambora no Brasil o assunto não tenha sido motivo de consideração elevada. * Entregue para publicação em 6/10/75. Os autores são gratos aos Profs. Ε. Malavolta e A. Cer¬ vellini pelo fornecimento do 6s Zn e pela permissão do uso das dependências e aparelhos do CENA, respectivamente.

show abstract

Zinc Status of New Jersey Soils

Cited by 19 publications

References 0 publications

Plant-availability of soil and fertilizer zinc in cultivated soils of Finland

Plant-availability of soil and fertilizer zinc in cultivated soils of Finland

Zinco em solos do estado de São Paulo I: zinco total

Influência do pH e dos teores de fosfato solúvel e matéria orgânica sobre a fixação de zinco pelo solo

Contact Info

Product

Resources

About