Direct and residual effect of foliar applications of copper and manganese on cottonseed yield and quality

In 1986-1987 field experiments at Giza, Egypt, cotton cv. Giza 75 was given foliar application of the micronutrients copper and manganese (Cu at 0.0, 12.5, 25.0, and 37.5 ppm and Mn at 0.0, 25.0, and 50.0 ppm) applied at 85 and 105 days after sowing. Individual Cu or Mn applications increased cotton...

Full description

Saved in:
Bibliographic Details
Published in:Journal of agricultural and food chemistry 1993-10, Vol.41 (10), p.1756-1759
Main Authors: Sawan, Zakaria M, Basyony, Ahmad E, McCuistion, Willis L, El Farra, Abdel Hamid A
Format: Article
Language:English
Subjects:
ABONOS DE OLIGOELEMENTOS
ACEITE DE ALGODON
APLICACION FOLIAR
APPLICATION FOLIAIRE
CALIDAD
CHELATEUR
COBRE
CUIVRE
DATE DE TRAITEMENT
DOSE D'APPLICATION
DOSIS DE APLICACION
ENGRAIS A OLIGOELEMENTS
FECHA DE TRATAMIENTO
GOSSYPIUM BARBADENSE
GRAINE DE COTON
HUILE DE COTON
MANGANESE
MANGANESO
PROTEINAS VEGETALES
PROTEINE VEGETALE
QUALITE
QUELATOS
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
SEMILLA DE ALGODON
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In 1986-1987 field experiments at Giza, Egypt, cotton cv. Giza 75 was given foliar application of the micronutrients copper and manganese (Cu at 0.0, 12.5, 25.0, and 37.5 ppm and Mn at 0.0, 25.0, and 50.0 ppm) applied at 85 and 105 days after sowing. Individual Cu or Mn applications increased cottonseed yield and seed index above those of the control (0.0 Cu, 0.0 Mn). Cu at 37.5 ppm with Mn at 50 ppm gave the highest seed oil content. Highest oil and protein yields resulted from Cu and Mn at 25 ppm, when applied separately, while oil refractive index, and iodine value increased from Cu and Mn added separately or in combination. Unsaponifiable matter increased as a result of almost all treatments. All Cu or Mn treatments, applied either separately or in combination, generally decreased saturated fatty acids (myristic, palmitic, and stearic) and increased unsaturated fatty acids (palmitoleic, oleic, and linoleic). Cu at 12.5 ppm or Mn at 25 ppm gave the lowest levels of saturated fatty acids
ISSN:0021-8561
1520-5118
DOI:10.1021/jf00034a044