Idioma:

Genotypic interactions with potassium and nitrogen in cotton of varied maturity

Pettigrew, William T. ; Heitholt, James J. ; Meredith, William R.

Agronomy journal, 1996, Vol.88 (1), p.89-93 [Periódico revisado por pares]

Madison, WI: American Society of Agronomy

Sem texto completo

Citações Citado por

Enviar para

Título:
Genotypic interactions with potassium and nitrogen in cotton of varied maturity
Autor: Pettigrew, William T. ; Heitholt, James J. ; Meredith, William R.
Assuntos: abonos nitrogenados ; abonos potasicos ; Adaptation to environment and cultivation conditions ; Agronomy. Soil science and plant productions ; application rates ; Biological and medical sciences ; calidad ; carence minerale ; crop yield ; deficiencia de minerales ; dose d' application ; dosis de aplicacion ; engrais azote ; engrais potassique ; etapas de desarrollo de la planta ; fibras vegetales ; fibre vegetale ; Fundamental and applied biological sciences. Psychology ; Genetics and breeding of economic plants ; genotipos ; genotype ; genotypes ; gossypium hirsutum ; losses ; maduracion ; maturation ; mineral deficiencies ; mississippi ; nitrogen fertilizers ; perdidas ; perte ; plant developmental stages ; plant fibres ; potash fertilizers ; potasio ; potassium ; qualite ; quality ; rendement ; rendement des cultures ; rendimiento ; rendimiento de cultivos ; stade de developpement vegetal ; Varietal selection. Specialized plant breeding, plant breeding aims ; yields
É parte de: Agronomy journal, 1996, Vol.88 (1), p.89-93
Notas: H
H50
Descrição: The development of late season K deficiency symptoms in cotton (Gossypium hirsutum L.) fields has become more frequent in the Mid-South and Far West US. production regions. In this study, the objectives were to determine how yield and quality of lint produced by cotton genotypes of varying maturities are affected by different rates of soil applied K and N fertilization. Eight cotton genotypes representing a range of maturities and regional adaptations were studied in Mississippi in 1991 and 1992. All plots received a preplant application of 112 kg ha-1 N and half the plots also received a 38 kg ha-1 sidedress application of N. Within each N treatment, half the plots received 112 kg ha-1 K surface applied and preplant incorporated, with the remaining plots receiving 0 kg ha-1 K. Averaged across years and N treatments, the K deficiency associated with the 0 K treatment reduced lint yield (9%), boll mass (7%), lint percentage (1%), and seed mass (4%). Varying the N fertilization did not benefit these parameters. The high N treatment reduced lint yield 3% (P = 0.07) and lint percentage 1% (P = 0.06) when coupled with the 0 K treatment. All genotypes suffered yield reductions caused by the K deficiency, except for 'HS 26' which was not adapted for production in the Mississippi Delta. Potassium deficiency produced reductions in fiber elongation (3%), 50% span length (1%), uniformity ratio (1%), micronaire (10%), fiber maturity (5%), and perimeter (1%) in all genotypes. Nitrogen application above the 112 kg ha-1 rate did not increase the lint yield under the growing conditions of our study. The data indicate that genotype was not of importance when dealing with K fertility. The deficiency itself, however, must be dealt with to avoid significant reductions in the yield and quality of fiber produced.
Editor: Madison, WI: American Society of Agronomy
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Genotypic interactions with potassium and nitrogen in cotton of varied maturity

Pettigrew, William T. ; Heitholt, James J. ; Meredith, William R.

Madison, WI: American Society of Agronomy

Buscando em bases de dados remotas. Favor aguardar.