Deux expériences ont été conduites pour déterminer l’effet de l’application de KNO3 sur la tolérance de l’ivraie vivace (Lolium perenne L.) à la salinité. Des pots de 50 cm de diamètre ont été remplis d’un mélange de perlite et de sable (1/1), puis les pots de semis ont été placés sous une serre. Les traitements ont consisté à combiner deux dosages de NaCl (0 et 60 mM) à quatre dosages de KNO3 (0, 5, 10 et 15 mM). L’apport de nitrate de potassium a été effectué soit au sol soit en application foliaire. Les pots ont été disposés en un bloc aléatoire complet avec quatre réplications.
L’augmentation du dosage de KNO3 jusqu’à 5 et 10 mM a favorisé la croissance des feuilles pour NaCl0 et NaCl60, respectivement. Avec le traitement NaCl60, les plants fertilisés au KNO3 ont cependant affiché une réduction moindre de la surface foliaire et des poids frais et sec par rapport aux plants non traités au KNO3. Le traitement au KNO3 à 15 mM a significativement diminué le poids frais et la croissance des feuilles. Le pourcentage de survie des plants en conditions salines a été supérieur pour les traitements foliaires au KNO3 par rapport aux applications au sol (Figures 1 et 2).
Les résultats des expériences ont clairement indiqué l’effet bénéfique du nitrate de potassium sur la croissance, la concentration en minéraux nutritifs (K et N) et la teneur en chlorophylle des plantes cultivées en conditions salines. L’application foliaire de KNO3 a démontré sa plus grande efficacité par rapport à l’application au sol pour améliorer la croissance de l’ivraie vivace en conditions salines. L’explication possible est que l’apport de NaCl accompagné de KNO3 à l’ivraie vivace a augmenté le potentiel osmotique et la toxicité ionique, tandis que les effets néfastes de la salinité sur l’augmentation du potentiel osmotique devraient être inférieurs si du KNO3 est apporté en application foliaire.
SHAPE * MERGEFORMAT <v:rect id="Rectangle_x0020_34" o:spid="_x0000_s1027" style='width:14.65pt;height:14.65pt;visibility:visible;mso-wrap-style:square; mso-left-percent:-10001;mso-top-percent:-10001;mso-position-horizontal:absolute; mso-position-horizontal-relative:char;mso-position-vertical:absolute; mso-position-vertical-relative:line;mso-left-percent:-10001;mso-top-percent:-10001; v-text-anchor:top' o:gfxdata="UEsDBBQABgAIAAAAIQC75UiUBQEAAB4CAAATAAAAW0NvbnRlbnRfVHlwZXNdLnhtbKSRvU7DMBSF dyTewfKKEqcMCKEmHfgZgaE8wMW+SSwc27JvS/v23KTJgkoXFsu+P+c7Ol5vDoMTe0zZBl/LVVlJ gV4HY31Xy4/tS3EvRSbwBlzwWMsjZrlprq/W22PELHjb51r2RPFBqax7HCCXIaLnThvSAMTP1KkI +gs6VLdVdad08ISeCho1ZLN+whZ2jsTzgcsnJwldluLxNDiyagkxOquB2Knae/OLUsyEkjenmdzb mG/YhlRnCWPnb8C898bRJGtQvEOiVxjYhtLOxs8AySiT4JuDystlVV4WPeM6tK3VaILeDZxIOSsu ti/jidNGNZ3/J08yC1dNv9v8AAAA//8DAFBLAwQUAAYACAAAACEArTA/8cEAAAAyAQAACwAAAF9y ZWxzLy5yZWxzhI/NCsIwEITvgu8Q9m7TehCRpr2I4FX0AdZk2wbbJGTj39ubi6AgeJtl2G9m6vYx jeJGka13CqqiBEFOe2Ndr+B03C3WIDihMzh6RwqexNA281l9oBFTfuLBBhaZ4ljBkFLYSMl6oAm5 8IFcdjofJ0z5jL0MqC/Yk1yW5UrGTwY0X0yxNwri3lQgjs+Qk/+zfddZTVuvrxO59CNCmoj3vCwj MfaUFOjRhrPHaN4Wv0VV5OYgm1p+LW1eAAAA//8DAFBLAwQUAAYACAAAACEAd7oXQvECAACiBgAA HwAAAGNsaXBib2FyZC9kcmF3aW5ncy9kcmF3aW5nMS54bWykVdtu2zAMfR+wfxD07tpOnYuNukWb SzGgW4tm/QBFVmJhsuRJyqUb9u+jZLtx02EPbR4SiSKPeA5J5eLqUAm0Y9pwJXMcn0UYMUlVweUm x0/fF8EEI2OJLIhQkuX4mRl8dfn50wXJNprUJacIEKTJSI5La+ssDA0tWUXMmaqZhLO10hWxsNWb sNBkD8iVCAdRNAorwiW+PELNiCVoq/k7oISiP1gxJXJHDEAKmvUtbY6CfhyZZHJ3q+tl/aBd5vTb 7kEjXuQYlJOkAolw2B60brANT6I2R4DDWlfOX63X6OBRnt23x2AHiygY48koGg4xonDUrps7yvt/ RNFy/t84SKa5FBa9REzt0pC7t8zOk47aI6PQCxvBENg6ml2Aqe+gCAZJNS3BiV2bGtwhY4juTFqr fclIYZy5EQYUbBC8SEcwkHW1/6oKUJRsrfJ98n6xXkiTrNbG3jJVIbfIsYYkPTjZ3Rnb5NS5eEXU ggvhyQr5ygCYjQXqBKHuzFXMN/DvNErnk/kkCZLBaB4k0WwWXC+mSTBaxOPh7Hw2nc7iP+7eOMlK XhRMumu6YYqTN51acaqVUWt7RlUVQrtwyrqBgnGKo+M4GSV44eBcSkZvVlOh0Y6IHC/8p1W+5xa+ TsN3LHA5oRQPkuhmkAaL0WQcJItkGKTjaBJEcXqTjqIkTWaL15TuuGQfp4T2OU6Hg6GvUi/pE26R /7zlRrKKW6aR4FWOJy9OJHONOJeFL60lXDTrnhQu/aMUUO6u0LA07QNgD0s/OPZwo4pnJ9gKfqF5 tYLmgkcBHld7D19roYAHFbzGqFT616nN+UHR4QSjPTytOTY/t0QzjMQXCfOSxkkCcNZvkuF4ABvd P1n1T4ikAJVji1GznFrYQci21nxTwk2xl1OqaxiuNW8bv8ndsRDGLu2zYF4dz5DJ4oFo8gjcBMx3 jpkMnpat3uABohxF2Bq2rN1z0QxUo5KXDRxPXmcf2v6buL+A/v7yLwAAAP//AwBQSwMEFAAGAAgA AAAhAJJ9h+AdBwAASSAAABoAAABjbGlwYm9hcmQvdGhlbWUvdGhlbWUxLnhtbOxZS28bNxC+F+h/ WOy9sWS9YiNyYMly3MQvREqKHCmJ2mXMXS5Iyo5uRXLqpUCBtOihAXrroSgaoAEa9NIfY8BBm/6I DrkvUqLiB1wgKGwBxu7sN8PhzOzM7PDO3WcR9Y4xF4TFbb96q+J7OB6xMYmDtv9osP3Zbd8TEsVj RFmM2/4MC//uxqef3EHrI0qSIUN8PAhxhD0QFIt11PZDKZP1lRUxAjISt1iCY3g2YTxCEm55sDLm 6AQWiOjKaqXSXIkQif0NkCiVoB6Ff7EUijCivK/EYC9GEax+MJmQEdbY8VFVIcRMdCn3jhFt+yBz zE4G+Jn0PYqEhAdtv6L//JWNOytoPWOicgmvwbet/zK+jGF8tKrX5MGwWLReb9Sbm4V8DaByEddr 9Zq9ZiFPA9BoBDtNdbFltla79QxrgNJLh+yt1latauEN+bUFnTcb6mfhNSiVX1/Ab293wYoWXoNS fGMB3+isdbZs+RqU4psL+FZlc6vesuRrUEhJfLSArjSatW6+2wIyYXTHCV9r1Ldbq5nwEgXRUESX WmLCYrks1iL0lPFtACggRZLEnpwleIJGEJNdRMmQE2+XBCEEXoJiJoBcWa1sV2rwX/3q+kp7FK1j ZHArvUATsUBS+nhixEki2/59kOobkLO3b0+fvzl9/vvpixenz3/N1taiLL4dFAcm3/ufvvnn1Zfe 37/9+P7lt+nS83hh4t/98tW7P/78kHjYcWmKs+9ev3vz+uz7r//6+aVD+iZHQxM+IBEW3j4+8R6y CDbo0B8P+eU4BiEiJsdmHAgUI7WKQ35PhhZ6f4YocuA62LbjYw6pxgW8N31qKdwP+VQSh8QHYWQB 9xijHcadVnig1jLMPJjGgXtxPjVxDxE6dq3dRbHl5d40gRxLXCK7IbbUPKQolijAMZaeesaOMHbs 7gkhll33yIgzwSbSe0K8DiJOkwzI0IqmkmmHROCXmUtB8Ldlm73HXodR16638LGNhHcDUYfyA0wt M95DU4kil8gBiqhp8F0kQ5eS/RkfmbiekODpAFPm9cZYCBfPAYf9Gk5/AGnG7fY9OotsJJfkyCVz FzFmIrfYUTdEUeLC9kkcmtjPxRGEKPIOmXTB95j9hqh78AOKl7r7McGWu8/PBo8gw5oqlQGinky5 w5f3MLPitz+jE4RdqWaTR1aK3eTEGR2daWCF9i7GFJ2gMcbeo88dGnRYYtm8VPp+CFllB7sC6z6y Y1Xdx1hgTzc3i3lylwgrZPs4YEv02ZvNJZ4ZiiPEl0neB6+bNu9BqYtcAXBAR0cmcJ9Avwfx4jTK gQAZRnAvlXoYIquAqXvhjtcZt/x3kXcM3sunlhoXeC+BB1+aBxK7yfNB2wwQtRYoA2aAoMtwpVtg sdxfsqjiqtmmTr6J/dKWboDuyGp6IhKf2wHN9T6N/673gQ7j7IdXjpftevodt2ArWV2y01mWTHbm +ptluPmupsv4mHz8Tc0WmsaHGOrIYsa66Wluehr/f9/TLHufbzqZZf3GTSfjQ4dx08lkw5Xr6WTK 5gX6GjXwSAc9euwTLZ36TAilfTmjeFfowY+A75nxNhAVn55u4mIKmIRwqcocLGDhAo40j8eZ/ILI sB+iBKZDVV8JCUQmOhBewgQMjTTZKVvh6TTaY+N02FmtqsFmWlkFkiW90ijoMKiSKbrZKgd4hXit baAHrbkCivcyShiL2UrUHEq0cqIykh7rgtEcSuidXYsWaw4tbivxuasWtADVCq/AB7cHn+ltv1EH FmCCeRw052Plp9TVuXe1M6/T08uMaUUANNh5BJSeXlO6Lt2e2l0aahfwtKWEEW62EtoyusETIXwG Z9GpqBdR47K+XitdaqmnTKHXg9Aq1Wjd/pAWV/U18M3nBhqbmYLG3knbb9YaEDIjlLT9CQyN4TJK IHaE+uZCNIDjlpHk6Qt/lcyScCG3kAhTg+ukk2aDiEjMPUqitq+2X7iBxjqHaN2qq5AQPlrl1iCt fGzKgdNtJ+PJBI+k6XaDoiyd3kKGT3OF86lmvzpYcbIpuLsfjk+8IZ3yhwhCrNGqKgOOiYCzg2pq zTGBw7AikZXxN1eYsrRrnkbpGErpiCYhyiqKmcxTuE7lhTr6rrCBcZftGQxqmCQrhMNAFVjTqFY1 LapGqsPSqns+k7KckTTLmmllFVU13VnMWiEvA3O2vFqRN7TKTQw5zazwaeqeT7lrea6b6xOKKgEG L+znqLoXKAiGauVilmpK48U0rHJ2RrVrR77Bc1S7SJEwsn4zFztnt6JGOJcD4pUqP/DNRy2QJnlf qS3tOtjeQ4k3DKptHw6XYTj4DK7geNoH2qqirSoaXMGZM5SL9KC47WcXOQWep5QCU8sptRxTzyn1 nNLIKY2c0swpTd/TJ6pwiq8OU30vPzCFGpYdsGa9hX36v/EvAAAA//8DAFBLAwQUAAYACAAAACEA nGZGQbsAAAAkAQAAKgAAAGNsaXBib2FyZC9kcmF3aW5ncy9fcmVscy9kcmF3aW5nMS54bWwucmVs c4SPzQrCMBCE74LvEPZu0noQkSa9iNCr1AcIyTYtNj8kUezbG+hFQfCyMLPsN7NN+7IzeWJMk3cc aloBQae8npzhcOsvuyOQlKXTcvYOOSyYoBXbTXPFWeZylMYpJFIoLnEYcw4nxpIa0cpEfUBXNoOP VuYio2FBqrs0yPZVdWDxkwHii0k6zSF2ugbSL6Ek/2f7YZgUnr16WHT5RwTLpRcWoIwGMwdKV2ed NS1dgYmGff0m3gAAAP//AwBQSwECLQAUAAYACAAAACEAu+VIlAUBAAAeAgAAEwAAAAAAAAAAAAAA AAAAAAAAW0NvbnRlbnRfVHlwZXNdLnhtbFBLAQItABQABgAIAAAAIQCtMD/xwQAAADIBAAALAAAA AAAAAAAAAAAAADYBAABfcmVscy8ucmVsc1BLAQItABQABgAIAAAAIQB3uhdC8QIAAKIGAAAfAAAA AAAAAAAAAAAAACACAABjbGlwYm9hcmQvZHJhd2luZ3MvZHJhd2luZzEueG1sUEsBAi0AFAAGAAgA AAAhAJJ9h+AdBwAASSAAABoAAAAAAAAAAAAAAAAATgUAAGNsaXBib2FyZC90aGVtZS90aGVtZTEu eG1sUEsBAi0AFAAGAAgAAAAhAJxmRkG7AAAAJAEAACoAAAAAAAAAAAAAAAAAowwAAGNsaXBib2Fy ZC9kcmF3aW5ncy9fcmVscy9kcmF3aW5nMS54bWwucmVsc1BLBQYAAAAABQAFAGcBAACmDQAAAAA= " filled="f" stroked="f">
Figure 1. Effet de la salinité et de l’application foliaire de nitrate de potassium sur la qualité de la canopée, en pourcentage de survie des plants.
SHAPE * MERGEFORMAT <v:rect id="Rectangle_x0020_32" o:spid="_x0000_s1026" style='width:14.65pt;height:14.65pt;visibility:visible;mso-wrap-style:square; mso-left-percent:-10001;mso-top-percent:-10001;mso-position-horizontal:absolute; mso-position-horizontal-relative:char;mso-position-vertical:absolute; mso-position-vertical-relative:line;mso-left-percent:-10001;mso-top-percent:-10001; v-text-anchor:top' o:gfxdata="UEsDBBQABgAIAAAAIQC75UiUBQEAAB4CAAATAAAAW0NvbnRlbnRfVHlwZXNdLnhtbKSRvU7DMBSF dyTewfKKEqcMCKEmHfgZgaE8wMW+SSwc27JvS/v23KTJgkoXFsu+P+c7Ol5vDoMTe0zZBl/LVVlJ gV4HY31Xy4/tS3EvRSbwBlzwWMsjZrlprq/W22PELHjb51r2RPFBqax7HCCXIaLnThvSAMTP1KkI +gs6VLdVdad08ISeCho1ZLN+whZ2jsTzgcsnJwldluLxNDiyagkxOquB2Knae/OLUsyEkjenmdzb mG/YhlRnCWPnb8C898bRJGtQvEOiVxjYhtLOxs8AySiT4JuDystlVV4WPeM6tK3VaILeDZxIOSsu ti/jidNGNZ3/J08yC1dNv9v8AAAA//8DAFBLAwQUAAYACAAAACEArTA/8cEAAAAyAQAACwAAAF9y ZWxzLy5yZWxzhI/NCsIwEITvgu8Q9m7TehCRpr2I4FX0AdZk2wbbJGTj39ubi6AgeJtl2G9m6vYx jeJGka13CqqiBEFOe2Ndr+B03C3WIDihMzh6RwqexNA281l9oBFTfuLBBhaZ4ljBkFLYSMl6oAm5 8IFcdjofJ0z5jL0MqC/Yk1yW5UrGTwY0X0yxNwri3lQgjs+Qk/+zfddZTVuvrxO59CNCmoj3vCwj MfaUFOjRhrPHaN4Wv0VV5OYgm1p+LW1eAAAA//8DAFBLAwQUAAYACAAAACEAylvny/ECAACiBgAA HwAAAGNsaXBib2FyZC9kcmF3aW5ncy9kcmF3aW5nMS54bWykVdtu2zAMfR+wfxD07tpOnYuNukWb SzGgW4tm/QBFVmJhsuRJyqUb9u+jZLtx02EPbR4SiSKPeA5J5eLqUAm0Y9pwJXMcn0UYMUlVweUm x0/fF8EEI2OJLIhQkuX4mRl8dfn50wXJNprUJacIEKTJSI5La+ssDA0tWUXMmaqZhLO10hWxsNWb sNBkD8iVCAdRNAorwiW+PELNiCVoq/k7oISiP1gxJXJHDEAKmvUtbY6CfhyZZHJ3q+tl/aBd5vTb 7kEjXuQYlJOkAolw2B60brANT6I2R4DDWlfOX63X6OBRnt23x2AHiygY48koGg4xonDUrps7yvt/ RNFy/t84SKa5FBa9REzt0pC7t8zOBx21R0ahFzaCIbB1NLsAU99BEQySalqCE7s2NbhDxhDdmbRW +5KRwjhzIwwo2CB4kY5gIOtq/1UVoCjZWuX75P1ivZAmWa2NvWWqQm6RYw1JenCyuzO2yalz8Yqo BRfCkxXylQEwGwvUCULdmauYb+DfaZTOJ/NJEiSD0TxIotksuF5Mk2C0iMfD2flsOp3Ff9y9cZKV vCiYdNd0wxQnbzq14lQro9b2jKoqhHbhlHUDBeMUR8dxMkrwwsG5lIzerKZCox0ROV74T6t8zy18 nYbvWOByQikeJNHNIA0Wo8k4SBbJMEjH0SSI4vQmHUVJmswWryndcck+Tgntc5wOB0NfpV7SJ9wi /3nLjWQVt0wjwascT16cSOYacS4LX1pLuGjWPSlc+kcpoNxdoWFp2gfAHpZ+cOzhRhXPTrAV/ELz agXNBY8CPK72Hr7WQgEPKniNUan0r1Ob84OiwwlGe3hac2x+bolmGIkvEuYljZME4KzfJMPxADa6 f7LqnxBJASrHFqNmObWwg5BtrfmmhJtiL6dU1zBca942fpO7YyGMXdpnwbw6niGTxQPR5BG4CZjv HDMZPC1bvcEDRDmKsDVsWbvnohmoRiUvGzievM4+tP03cX8B/f3lXwAAAP//AwBQSwMEFAAGAAgA AAAhAJJ9h+AdBwAASSAAABoAAABjbGlwYm9hcmQvdGhlbWUvdGhlbWUxLnhtbOxZS28bNxC+F+h/ WOy9sWS9YiNyYMly3MQvREqKHCmJ2mXMXS5Iyo5uRXLqpUCBtOihAXrroSgaoAEa9NIfY8BBm/6I DrkvUqLiB1wgKGwBxu7sN8PhzOzM7PDO3WcR9Y4xF4TFbb96q+J7OB6xMYmDtv9osP3Zbd8TEsVj RFmM2/4MC//uxqef3EHrI0qSIUN8PAhxhD0QFIt11PZDKZP1lRUxAjISt1iCY3g2YTxCEm55sDLm 6AQWiOjKaqXSXIkQif0NkCiVoB6Ff7EUijCivK/EYC9GEax+MJmQEdbY8VFVIcRMdCn3jhFt+yBz zE4G+Jn0PYqEhAdtv6L//JWNOytoPWOicgmvwbet/zK+jGF8tKrX5MGwWLReb9Sbm4V8DaByEddr 9Zq9ZiFPA9BoBDtNdbFltla79QxrgNJLh+yt1latauEN+bUFnTcb6mfhNSiVX1/Ab293wYoWXoNS fGMB3+isdbZs+RqU4psL+FZlc6vesuRrUEhJfLSArjSatW6+2wIyYXTHCV9r1Ldbq5nwEgXRUESX WmLCYrks1iL0lPFtACggRZLEnpwleIJGEJNdRMmQE2+XBCEEXoJiJoBcWa1sV2rwX/3q+kp7FK1j ZHArvUATsUBS+nhixEki2/59kOobkLO3b0+fvzl9/vvpixenz3/N1taiLL4dFAcm3/ufvvnn1Zfe 37/9+P7lt+nS83hh4t/98tW7P/78kHjYcWmKs+9ev3vz+uz7r//6+aVD+iZHQxM+IBEW3j4+8R6y CDbo0B8P+eU4BiEiJsdmHAgUI7WKQ35PhhZ6f4YocuA62LbjYw6pxgW8N31qKdwP+VQSh8QHYWQB 9xijHcadVnig1jLMPJjGgXtxPjVxDxE6dq3dRbHl5d40gRxLXCK7IbbUPKQolijAMZaeesaOMHbs 7gkhll33yIgzwSbSe0K8DiJOkwzI0IqmkmmHROCXmUtB8Ldlm73HXodR16638LGNhHcDUYfyA0wt M95DU4kil8gBiqhp8F0kQ5eS/RkfmbiekODpAFPm9cZYCBfPAYf9Gk5/AGnG7fY9OotsJJfkyCVz FzFmIrfYUTdEUeLC9kkcmtjPxRGEKPIOmXTB95j9hqh78AOKl7r7McGWu8/PBo8gw5oqlQGinky5 w5f3MLPitz+jE4RdqWaTR1aK3eTEGR2daWCF9i7GFJ2gMcbeo88dGnRYYtm8VPp+CFllB7sC6z6y Y1Xdx1hgTzc3i3lylwgrZPs4YEv02ZvNJZ4ZiiPEl0neB6+bNu9BqYtcAXBAR0cmcJ9Avwfx4jTK gQAZRnAvlXoYIquAqXvhjtcZt/x3kXcM3sunlhoXeC+BB1+aBxK7yfNB2wwQtRYoA2aAoMtwpVtg sdxfsqjiqtmmTr6J/dKWboDuyGp6IhKf2wHN9T6N/673gQ7j7IdXjpftevodt2ArWV2y01mWTHbm +ptluPmupsv4mHz8Tc0WmsaHGOrIYsa66Wluehr/f9/TLHufbzqZZf3GTSfjQ4dx08lkw5Xr6WTK 5gX6GjXwSAc9euwTLZ36TAilfTmjeFfowY+A75nxNhAVn55u4mIKmIRwqcocLGDhAo40j8eZ/ILI sB+iBKZDVV8JCUQmOhBewgQMjTTZKVvh6TTaY+N02FmtqsFmWlkFkiW90ijoMKiSKbrZKgd4hXit baAHrbkCivcyShiL2UrUHEq0cqIykh7rgtEcSuidXYsWaw4tbivxuasWtADVCq/AB7cHn+ltv1EH FmCCeRw052Plp9TVuXe1M6/T08uMaUUANNh5BJSeXlO6Lt2e2l0aahfwtKWEEW62EtoyusETIXwG Z9GpqBdR47K+XitdaqmnTKHXg9Aq1Wjd/pAWV/U18M3nBhqbmYLG3knbb9YaEDIjlLT9CQyN4TJK IHaE+uZCNIDjlpHk6Qt/lcyScCG3kAhTg+ukk2aDiEjMPUqitq+2X7iBxjqHaN2qq5AQPlrl1iCt fGzKgdNtJ+PJBI+k6XaDoiyd3kKGT3OF86lmvzpYcbIpuLsfjk+8IZ3yhwhCrNGqKgOOiYCzg2pq zTGBw7AikZXxN1eYsrRrnkbpGErpiCYhyiqKmcxTuE7lhTr6rrCBcZftGQxqmCQrhMNAFVjTqFY1 LapGqsPSqns+k7KckTTLmmllFVU13VnMWiEvA3O2vFqRN7TKTQw5zazwaeqeT7lrea6b6xOKKgEG L+znqLoXKAiGauVilmpK48U0rHJ2RrVrR77Bc1S7SJEwsn4zFztnt6JGOJcD4pUqP/DNRy2QJnlf qS3tOtjeQ4k3DKptHw6XYTj4DK7geNoH2qqirSoaXMGZM5SL9KC47WcXOQWep5QCU8sptRxTzyn1 nNLIKY2c0swpTd/TJ6pwiq8OU30vPzCFGpYdsGa9hX36v/EvAAAA//8DAFBLAwQUAAYACAAAACEA nGZGQbsAAAAkAQAAKgAAAGNsaXBib2FyZC9kcmF3aW5ncy9fcmVscy9kcmF3aW5nMS54bWwucmVs c4SPzQrCMBCE74LvEPZu0noQkSa9iNCr1AcIyTYtNj8kUezbG+hFQfCyMLPsN7NN+7IzeWJMk3cc aloBQae8npzhcOsvuyOQlKXTcvYOOSyYoBXbTXPFWeZylMYpJFIoLnEYcw4nxpIa0cpEfUBXNoOP VuYio2FBqrs0yPZVdWDxkwHii0k6zSF2ugbSL6Ek/2f7YZgUnr16WHT5RwTLpRcWoIwGMwdKV2ed NS1dgYmGff0m3gAAAP//AwBQSwECLQAUAAYACAAAACEAu+VIlAUBAAAeAgAAEwAAAAAAAAAAAAAA AAAAAAAAW0NvbnRlbnRfVHlwZXNdLnhtbFBLAQItABQABgAIAAAAIQCtMD/xwQAAADIBAAALAAAA AAAAAAAAAAAAADYBAABfcmVscy8ucmVsc1BLAQItABQABgAIAAAAIQDKW+fL8QIAAKIGAAAfAAAA AAAAAAAAAAAAACACAABjbGlwYm9hcmQvZHJhd2luZ3MvZHJhd2luZzEueG1sUEsBAi0AFAAGAAgA AAAhAJJ9h+AdBwAASSAAABoAAAAAAAAAAAAAAAAATgUAAGNsaXBib2FyZC90aGVtZS90aGVtZTEu eG1sUEsBAi0AFAAGAAgAAAAhAJxmRkG7AAAAJAEAACoAAAAAAAAAAAAAAAAAowwAAGNsaXBib2Fy ZC9kcmF3aW5ncy9fcmVscy9kcmF3aW5nMS54bWwucmVsc1BLBQYAAAAABQAFAGcBAACmDQAAAAA= " filled="f" stroked="f">
Figure 2. Effet de la salinité et de l’application au sol de nitrate de potassium sur la qualité de la canopée, en pourcentage de survie des plants.
