Severe copper deficiency in orchard grapefruit trees

Distribution of Tylenchulus semipenetrans in a Texas Grapefruit Orchard.

Distribution of the citrus nematode (Tylenchulus semipenetrans) was studied over 18 months in a 6-year-old orchard of grapefruit (Citrus paradisi cv. Ruby Red) on sour orange (C. aurantium) rootstock. The 1.8-ha orchard was under chemical weed control, no tillage, and flood irrigation. Highest numbers of nematodes were found in the top 15 cm of the soil profile. The nematode population peaked i...

Copper deficiency.

Copper Deficiency in Feedlot Cattle

This study was conducted on 25 animals randomly selected from a herd with 40 feedlot cattle, which had poor growth, rough hair coat, and change in the colour of the hair coat. Blood samples were collected from the vena jugularis into the tubes containing Na2EDTA for the determination of plasma copper concentration and blood profile. Feed samples were also tested for copper, zinc, and molybdenum...

Haematogone hyperplasia in copper deficiency.

Copper deficiency is likely an underrecognized cause of anemia and neutropenia and may masquerade as a myelodysplastic syndrome (MDS). We report 2 cases of copper deficiency in which the diagnosis was suggested based on the characteristic morphologic findings, such as cytoplasmic vacuolization of erythroid and myeloid precursors and iron-containing plasma cells. It is interesting that both pati...

Copper deficiency myelopathy.

BACKGROUND In humans, Menkes disease is the well-recognized neurological disorder due to inherited copper deficiency. Myelopathy due to acquired copper deficiency is not a well-recognized entity in humans, although myelopathy due to copper deficiency is well documented in some animal species. PATIENTS We describe 3 patients who developed a progressive spastic-ataxic gait with proprioceptive d...