%0 Journal Article
%T Foliar Spray of Humic Substances on Seedling Production of Watermelon cv. Crimson Sweet
%A R.R.S. Silva-Matos
%A I.H.L. Cavalcante
%A G.B.S. Junior
%A F.G. Albano
%J Journal of Agronomy
%D 2012
%I 
%X The objective of this research was to study the effect of humic substances on seedling production of watermelon cv. Crimson Sweet. A completed randomized blocks design with five treatments (humic substances doses) was adopted, with five repetitions of 10 seedlings each, with a total of 250 seedlings. The following humic substances doses were studied 0 (unsprayed), 7.5, 15, 22.5 and 30 mL m-2 (0, 0.40, 0.80, 1.19 and 1.59 mL seedling-1), were sprayed at 10, 15 and 20 days after sowing. At the end of the experiment (25 days after sowing) the following variables were recorded: plant height; stem diameter; (3) dry weight of shoots and roots; root length; root volume; and leaf chlorophyll. Our studies demonstrate that: (1) foliar spray of humic substances enhances aerial part and root system of watermelon seedlings; (2) 22.5 mL m-2 dose of humic substances for foliar spray could be recommended for production of watermelon seedlings.
%K humic substances
%K seedling quality
%K Citrullus lanatus
%U http://docsdrive.com/pdfs/ansinet/ja/2012/60-64.pdf