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Salinity and Compost Amendment Impact on Amidase Activity in Rhizoshere of Tomato and Bean plants. | ||
| Al-Qadisiyah Journal For Agriculture Sciences | ||
| Article 1, Volume 7, Issue 2, 2017, Pages 1-13 PDF (0 K) | ||
| DOI: 10.33794/qjas.2017.162612 | ||
| Authors | ||
| Luma S.J.Al-Taweel1; Radhi K.Al-Rashidi2 | ||
| 1College of agriculture University of Al-Qadisiyah/Iraq | ||
| 2Al-Hashimia University of Jordan / college of natural resources & Environmental | ||
| Abstract | ||
| The aim of this study was to disclosed the activity of extracellular enzyme (amidase) in vertical and horizontal developing directions of rhizosphere (0-5 and 5-10) cm . The plots experiment was performed in Agriculture college / Al-Qadissiyah University for the spring season 2013 ,the sandy loam soil was used and cultivate Tomato (Lycopersicon Esculentum mill) and Bean (Phaseolus Vulgaris L.) plants under salinity levels (without salinity , 6 , 8 and 10) dS.m-1 and compost levels (0,10 and 20)T.h-1 , and their interactions completely randomized design (CRD) was used with six replicates, and the means of treatments were compared by L.S.D test 5% level . The results were summarized as : 1- The enzyme activity were increased with increasing of the adding compost level 20Ton.h-1 and its interactions with salinity levels . 2- The enzymes activity were varied in rhizosphere development directions and the plants were differed in the site of highest activity , the enzyme activity in horizontal rhizosphere development direction was higher than the vertical direction . 3- The enzyme activity in tomato rhizosphere was higher than bean rhizosphere in all rhizosphere vertical and horizontal directions . 4- The high inhibitor percent of enzyme activity was at the level of 10 dS.m-1 salinity and the lowest was at the 6 dS.m-1. The inhibition percent were increased in vertical direction of rhizosphere developing (5-10)cm in tomato plant. The adding compost levels were varied by increasing or decreasing of enzyme activity according to rhizosphere development and it sites . . | ||
| Keywords | ||
| Amidase; tomato; Bean Plants; Rhizoshere | ||
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