Resumen

GOMEZ, Manuel Iván; LOPEZ, Miguel Ángel  y  CIFUENTES, Yenny Carolina. Manganese as a positive factor in the potato (Solanum tuberosum L.) and pea (Pisum sativum L.) production in soils of Cundiboyacense high plain. Agron. colomb. [online]. 2006, vol.24, n.2, pp.340-347. ISSN 0120-9965.

In two contrast soils, Andic Eutrudepts (Funza, Cundinamarca) and Typic Hapludands (Saboyá, Boyacá), the agronomic response of potatoes (Solanum tuberosum L.) and pea (Pisum sativum L.) to the application of manganese was evaluated. In S. tuberosum, the investigation was made in two localities, Funza and Saboyá, evaluating Mn doses of 0.0, 3.0, 4.0, or 6.0 kg· ha^-1, respectively, applied in mixture with NPK fertilizer. Additionally, in Saboyá, a control treatment had no fertilizer applied. The varieties used in the investigation were 'Diacol Capiro' (Funza) and 'Parda Pastusa' (Saboyá). In P. sativum, the evaluation was carried out in the locality of Funza, and the doses of Mn were 0.0, 2.5, 5.0, 10.0, or 15.0 kg· ha-1 applied in mixture with recommended fertilizer NPK. In all cases, granulated manganese sulphate was used as a source of Mn (Microman; 20% Mn). The experiments were arranged in a random complete block design with three replicates. The application of Mn from 5.0 up to 6.0 kg· ha^-1 in S. tuberosum in Andic Eutrudepts and from 3.0 up to 4.0 kg· ha-1 Mn in Typic Hapludands increased yield on 10% and 17%, respectively, compared to the control without application. In P. sativum, the application of Mn caused highly significant increases in yield, favourable to Mn dose between 2.5 and 3.0 kg· ha^-1. This investigation may be extrapolated to soil units with similar characteristics and show that passive nutritious factors could increase yield potential.

Palabras clave : fertilization; dose; micronutrients; 'Diacol Capiro'; 'Parda Pastusa'.

        · resumen en Español     · texto en Español     · Español ( pdf )