Estudo sôbre a distribuição do S35 em cafeeiro (Coffea arabica L, Bourboon)

Crocomo, Otto J.; Ménard, L. Neptune

doi:10.1590/s0071-12761961000100009

Cited by 2 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Vários adubos têr sido utilizados nesse sentido, em cafeeiro, com resultado excelentes (ver MALA VOLTA et ai. 1957; CROCOMO NEPTUNE MENARD, 1961).…”

Section: Introductionunclassified

Pulverização foliar em cafeeiro (Coffea arabica L.) II: aplicação de adubos potássicos

Ménard¹,

Crocomo²,

Gomes³

et al. 1961

An. Esc. Super. Agric. Luiz de Queiroz

View full text Add to dashboard Cite

“…Vários adubos têr sido utilizados nesse sentido, em cafeeiro, com resultado excelentes (ver MALA VOLTA et ai. 1957; CROCOMO NEPTUNE MENARD, 1961).…”

Section: Introductionunclassified

Pulverização foliar em cafeeiro (Coffea arabica L.) II: aplicação de adubos potássicos

Ménard¹,

Crocomo²,

Gomes³

et al. 1961

An. Esc. Super. Agric. Luiz de Queiroz

View full text Add to dashboard Cite

Non root feeding with two sources of zinc on Coffea arábica L. 'mundo novo'(B.Rodr.) Choussy

Oliveira

Haag

Sarruge

et al. 1981

An. Esc. Super. Agric. Luiz de Queiroz

View full text Add to dashboard Cite

A trial was carried out on an eight old coffee plantation with visible zinc problems. The plantation was situated nearly the city of Jaú (22º30'S, 48º30'W). State of São Paulo, Brazil. The soil is classified as medium texture Oxisol of low base saturation (Latossol Vermelho Amarelo - fase arenosa). The pulverization program started in november 1977, followed in march and July 1978 (heavy harvest) and ended in march and July 1979 (light harvest). Is should be mentioned that a well reconized characteristic of arábica coffe is its habit of biennial bearing, a very heavy harvest is most often followed by a light load the next year. The following treatments and amounts of chemicals per cova hole (4 trees) were tested in accordance with a random block design: 1. 1 g of zinc (zinc sulphate, 0.5%) 2. 3 g of nitrogen (urea, 1.3%) 3. 1 g of zinc + 3 g of nitrogen (zinc sulphate 0.5% + urea 1.3%) 4. 0.25 g, 0.50 g, 1.00 g, 2.00 g of zinc plus 0.75 g, 1.50 g, 3.00 g and 6.00 of nitrogen (correspondent to NZN* 15-0-0-5 as 0.75%, 1-5%, 3.0% and 6.0% by v/v). Foliar absorption data were obtained by collecting the 3rd and 4th pairs of the coffee leaves and analysed them for N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, and Zn. The main results may be summarized as follows: 1. The maximum calculated yields of clean coffee were obtained by the applications of 5.84 1 of NZN (1.13%) per hectare. 2. The applications of zinc sulphate (0.5%) and urea (1.3%) together or separate did not affected the coffee bean production. 3. The applications of 15.0 1 of NZN per hectare reduced the coffee yields. 4. Leaf damages and burning symptoms were observed by the applications of urea (1.3%) plus zinc sulphate (0.5%) and larger doses than 7.5 1 of NZN per hectare. 5. Leaf tissue analysis show that the concentrations of the elements were affecred by the age of the leaves and by the yields of the coffee trees. 6. The applications of increasing doses of NZN causes an increase in the concentration of zinc, manganese and boron in the leaves and decreased the concentration in calcium and potassium the leaves. 7. The concentration of zinc in the leaves associated with the heavy harvest, in July, was 70.0 ppm.

show abstract

Estudo sôbre a distribuição do S35 em cafeeiro (Coffea arabica L, Bourboon)

Cited by 2 publications

References 1 publication

Pulverização foliar em cafeeiro (Coffea arabica L.) II: aplicação de adubos potássicos

Pulverização foliar em cafeeiro (Coffea arabica L.) II: aplicação de adubos potássicos

Non root feeding with two sources of zinc on Coffea arábica L. 'mundo novo'(B.Rodr.) Choussy

Contact Info

Product

Resources

About