Efecto Del Humusbol (humato Doble De Potasio Y Fósforo) En El Crecimiento Del Maíz En Fase Vegetativa

Content Provider	Semantic Scholar
Author	Lazo, José Vicente Ascencio, Jocelyne Ugarte, Jorge Eduardo Abreu Yzaguirre, Luis Evangelista
Copyright Year	2014
Abstract	Effect of Humusbol (double humate of potassium and phosphorus) on corn growth in vegetative phase The effect of a liquid organic amendment, consisting mainly of humic and fulvic acids, on the vegetative growth of corn plants was evaluated under greenhouse conditions. The experiment was performed as a completely randomized design with four replications and the following six treatments: Humusbol applied to soil at doses of 5, 6, 7 and 8 L·ha -1 + 1 L in 200 L of water to foliage; a commercial check (humus from earthworms) at doses of 5 L·ha -1 applied to the soil + 4 L in 200 L of water to the foliage, and an untreated check. The plants were grown in plastic pots opaque to light, filled with 8 kg of fertilized sandy loam soil (120, 50, and 40 kg·ha -1 N- P2O5 -K2O ). In each pot, one maize plant, hybrid H-2020, was grown. The soil treatments were applied 14 days after emergence, and treatments to foliage 14 days thereafter. The variables measured per plant were photosynthetic rate, relative chlorophyll content (SPAD), number of leaves, plant height, stem diameter, total leaf area, and dry biomass of roots and aerial organs. Results indicated that maize plants treated with the liquid organic amendment, had higher values for all tested morphometric variables as compared to the commercial and untreated checks. No significant differences were found for photosynthetic rates. Results suggest that the liquid organic amendment greatly stimulated the corn plant growth.
Starting Page	143
Ending Page	152
Page Count	10
File Format	PDF HTM / HTML
Volume Number	26
Alternate Webpage(s)	http://www.scielo.org.ve/pdf/ba/v26n3/art02.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article