%0 Journal Article
%T Effet du r¨¦gime hydrique sur les rendements du gombo en culture de contre-saison
%A R Nana
%A G Zombre
%A Z Tamini
%A M Sawadogo
%J Sciences & Nature
%D 2009
%I 
%X L¡¯¨¦tude ¨¤ pour but de mettre en ¨¦vidence la p¨¦riode de contre-saison favorable ¨¤ la culture du gombo (Abelmoschus esculentus) et de d¨¦terminer la bonne fr¨¦quence d¡¯arrosage. Pour cela, deux essais ont ¨¦t¨¦ r¨¦alis¨¦s sur trois ¨¦cotypes 1 ; 19 et 22: le premier pendant la p¨¦riode froide (d¨¦cembre-mars 2005) et le second durant la p¨¦riode chaude (avril-juillet). Trois fr¨¦quences d¡¯arrosage ont ¨¦t¨¦ appliqu¨¦es ¨¤ la culture ¨¤ partir du 21¨¨me jour apr¨¨s semis (JAS) de chaque essai. La teneur en eau des feuilles par rapport ¨¤ la masse s¨¨che, la hauteur moyenne des plantes ¨¤ la r¨¦colte et les param¨¨tres de production ont ¨¦t¨¦ mesur¨¦s. Des r¨¦sultats obtenus, il ressort que la teneur en eau des feuilles par rapport ¨¤ la mati¨¨re s¨¨che des trois ¨¦cotypes ¨¦tudi¨¦s (¨¦cotypes 1, 19 et 22) est significativement affect¨¦e par le r¨¦gime hydrique. En outre, la croissance du gombo est significativement r¨¦duite durant la p¨¦riode froide (d¨¦cembre-mars). L¡¯analyse du rendement en relation avec la fr¨¦quence d¡¯arrosage montre que l¡¯arrosage chaque deux jours est b¨¦n¨¦fique car non seulement, il permet d¡¯avoir de bons rendements mais r¨¦duit ¨¦galement le gaspillage d¡¯eau. Ind¨¦pendamment du r¨¦gime hydrique et de la p¨¦riode de culture, l¡¯¨¦cotype 22 s¡¯est r¨¦v¨¦l¨¦ ¨ºtre le plus productif. The study aims to highlight the favorable period of against-season for the okra culture and to determine the good frequency of watering. For that, two tests were carried out on three ecotypes 1; 19 and 22: the first during the cold period (December-March) and the second during the hot period (April-July). Three frequencies of watering are applied to the culture starting from the 21st JAS of each test. The water content of the sheets compared to the dry mass, the average height of the plants to harvest and the parameters of production are measured. Results obtained, showed that during the cold period, water content in leaves in comparison to dried matter of ecotypes studied (ecotypes 1; 19; 22) was significantly affected by the water regime. On the other hand, water regime hasn¡¯t significant effect on the water content of leaves. Moreover, the growth of okra is strongly slowed during the cold period. The analysis of yield in relation with water regime, show that watering all two days is beneficial because it permits to have appreciable yield but reduced water¡¯s waste. Independently of watering¡¯s frequency and farming period, ecotype 22 seems to be more productive. Mots cl¨¦s : contre-saison, fr¨¦quence d¡¯arrosage, gombo; rendement.
%U http://www.ajol.info/index.php/scinat/article/view/48664