Print ISSN: 2077-5822

Online ISSN: 2618-1479

Author : S.J.Al-Taweel, Luma


Salinity and Compost Amendment Impact on Al-Kaline Phosphate Activity in Rhizoshere of Tomato and Bean plants.

Luma S.J.Al-Taweel; Radhi K.Al-Rashidi

Al-Qadisiyah Journal For Agriculture Sciences, 2018, Volume 8, Issue 1, Pages 69-79
DOI: 10.33794/qjas.2018.162656

The aim of this study is to investigate the activity of alkaline phosphatase (extracellular enzyme) in vertical and horizontal developing direc tions of rhizosphere (0-5 and 5-10) cm . The plots experiment is performed in College of Agriculture / University of Al-Qadissiya for the spring season 2013 ,the sandy loam soil is used to 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 , their interactions completely randomized design (CRD) is used with six replicates, and the means of treatments are compared by L.S.D test 5% level .
The results are summarized as :
1- The enzyme activity are increased with increasing of the adding compost level 20Ton.h-1 and its interactions with salinity levels .
2- The enzymes activity are varied in rhizosphere development directions and the plants are differ in the site of highest activity , the enzyme activity in horizontal rhizosphere development direction is higher than the vertical direction .
3- The enzyme activity in bean rhizosphere is higher than in Tomato rhizosphere in activity except of the alkaline phosphatase at all rhizoshere vertical and horizontal directions .
4- The high inhibitor percentage of enzyme activity is at the level of 10 dS.m-1 salinity and the lowest is at the 6 dS.m-1 . The inhibition percentage are increased in vertical direction of rhizosphere developing (5-10)cm in tomato plant. The adding compost levels are varied by increasing or decreasing of enzyme activity according to rhizosphere development and it sites ..

Salinity and Compost Amendment Impact on Amidase Activity in Rhizoshere of Tomato and Bean plants.

Luma S.J.Al-Taweel; Radhi K.Al-Rashidi

Al-Qadisiyah Journal For Agriculture Sciences, 2017, Volume 7, Issue 2, Pages 1-13
DOI: 10.33794/qjas.2017.162612

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 . .

Effect of Salinity and Compost on Some Enzymes Activity in Rizhosphere of Bean and Tomato Plants

Luma S.J.Al-Taweel; Radi K.Al-Rashidi

Al-Qadisiyah Journal For Agriculture Sciences, 2016, Volume 6, Issue 1, Pages 37-57
DOI: 10.33794/qjas.2016.110161

The aim of this study is to discover the activity of extracellular enzymes (amidase , alkaline phosphatase and Arylsulphatase) in vertical and horizontal developing directions of rhizosphere (0-5 and 5-10) cm . The plot experiment is performed in college of Agriculture / Al-Qadissiya University for the spring season 2013 ,the loamy sand soil was used to cultivate Tomato (Lycopersicon Esculentum mill) and Bean (Phaseolus Vulgaris L.) plants under salinity levels (without salted the natural salinity) , 6 , 8 and 10 ds.m-1 and compost levels (0,10 ,20)T.h-1 , and their interactions randomized complete design (RCD) is used with three replicates used with L.S.D test 5% level .The laboratory experiment is performed to determine the all enzymes activity above for all treatments .

The results are summarized as :
1- Enzyme activity decreases with increasing the salinity levels for all enzymes used in this study and the salinity level 10 ds.m-1 is the lowest. The arrangement of activity values as
Alkaline Phosphatase  Amidase  Arylsulphatase
2- The enzyme activity increased with increasing the added compost level 20Ton.h-1 and its interactions with salinity levels , and it has positive role to reduce the negative effect of salinity and it increases the activity in all treatments as well as the dead plant treatments .
3- The enzymes activity varied in rhizosphere developing directions and the plants are different in the site of highest activity , the enzyme activity in horizontal rhizosphere developing direction is highest than the vertical direction .
4- The enzyme activity in Tomato rhizosphere is the higher than Bean rhizosphere in all enzymes without the alkaline phosphatase in all rhizosphere vertical and horizontal directions .