Effect of Compost and Phosphate Applications on the Growth, Cadmium and Lead Uptake by Maize Plants Grown on Contaminated Soils
Mona
Abd El- Ghany
Soils Dept., Fac. of Agric., Cairo Univ., Giza
author
Y.
Abdel-Aal
Soils Dept., Fac. of Agric., Cairo Univ., Giza
author
Hend
Ahmed
Soils Dept., Fac. of Agric., Cairo Univ., Giza
author
text
article
2018
eng
A pot experiment with maize (single cross-2030) was conducted to study the influence of phosphorus sources and levels and compost additions on growth, cadmium (Cd) and lead (Pb) contents of maize, as well as the availability of cadmium and lead in rhizosphere soil after the harvest of maize plants in three contaminated soils. It was observed in the three soils used in this study that compost addition increased significantly shoots and roots dry weight of maize plants and performed better than phosphate. With the three soils used in the study, results indicated that plants grown in soils amended with compost and supplied with rock phosphate (RP) at the high phosphate level, recorded the highest shoots & roots dry weight. Cadmium & lead contents of the both shoots & roots of maize plants were significantly reduced as a result of compost treatment. Rock phosphate addition significantly reduced Cd and Pb contents of both shoots and roots compared to single supper phosphate (SSP) for all soils examined. Increasing phosphate levels markedly reduced Cd and Pb contents of both shoots and roots with all soils studied. Also, the results revealed that plants grown in soils amended with compost and supplied with RP at high phosphate level recorded the lowest cadmium and lead contents of shoots and roots for the three soils used in this study. The availability of cadmium and lead in rhizosphere area after the harvest of maize plants were significantly decreased in all soils studied as a result of compost treatments. RP treatments significantly decreased the availability Cd and Pb in rhizosphere area of all soils studied compared to SSP addition. The available Cd and Pb in rhizosphere area were reduced as a result of increasing phosphate levels. The lowest value of available cadmium and lead in rhizosphere area of all studied soils were recorded for soils amended with compost and treated with RP at the high phosphate level.
Journal of Soil Sciences and Agricultural Engineering
Mansoura University, Faculty of Agriculture
2090-3685
9
v.
5
no.
2018
213
220
https://jssae.journals.ekb.eg/article_35736_7e8f0864ae52024a43e79374342b42ba.pdf
dx.doi.org/10.21608/jssae.2018.35736
Utilization a New Control Feeding System of Wheat Broadcasting
H.
El-Sabrawi
Agric. Eng. Res. Dept, Faculty of Agric., Mansoura Univ.
author
M.
Ebrahim
Agric. Eng. Res. Dept, Faculty of Agric., Mansoura Univ.
author
F.
Gazbia
Agric. Eng. Res. Inst.
author
text
article
2018
eng
A new feeding system on spreader implement was evaluated for basic performance in the broadcasting mode through pattern testing under operating variables such as tractor forward speed, a group of spring specification and a regular of ball mass of governor under two-transmission system of spreader land wheel. The VICON pendulum spreader modified and prepared to wheat broadcast. It included hopper from fiberglass-reinforced polyester of 200 kg capacity, spreader width from 1-14 meter, hopper width of 1430 mm, filling height of 1020mm; net mass of 130kg and with 3-point linkage category II and power needed of 9kW. The bottom of the hopper exist included two discs. One of them is fixed and the others is moving. The fixed disc have a three holes which look like this in the moving disc adjusted manually before broadcasting operation to obtain a suitable open which gives a needed quantity of seeding and spout that oscillates from side to side in a horizontal plan to distribute seeds or other granular materials. Calibration tests evaluated in a laboratory and field tests carried out under Egyptian conditions. Results showed that, under laboratory tests, the optimum quantity of wheat seeds g/m2 was 16.3g/m2 at forward speed 4.5 km/h, the balancing masses of 200 g and the group transmission system of 18 teeth and the spring specification of 18.01 N/cm. The above parameters gives the best results because of their obtained a suitable centrifugal forces and suitable opening gate out area of feeding machine. Under field experiments, the minimum fuel consumption were recorded at ball mass governor of 375g, forward speed of 5.6 km/h, the spring specification of 18.01 N/cm and the transmission system teeth ratio18 teeth. On the other side, the minimum energy found under ball mass governor of 200g, forward speed of 4.6 km/h, the spring specification of 18.01 N/cm and the transmission system teeth ratio18 teeth.
Journal of Soil Sciences and Agricultural Engineering
Mansoura University, Faculty of Agriculture
2090-3685
9
v.
5
no.
2018
221
227
https://jssae.journals.ekb.eg/article_35722_4ed909e33acb5b4182735a975f6a95f1.pdf
dx.doi.org/10.21608/jssae.2018.35722
Predicting Agricultural Potentiality using Land Degradation Factors in East of Rosetta Branch, Nile Delta, Egypt
A.
Abuzaid
Soil and Water Department, Faculty of Agriculture, Benha University, Egypt
author
M.
Bassouny
Soil and Water Department, Faculty of Agriculture, Benha University, Egypt
author
A.
Abdellatif
Soil, Water and Environment Research Institute, Agricultural Research Center, Egypt
author
text
article
2018
eng
The Nile Delta is the backbone of agriculture in Egypt and undergoes land degradation, thus predicting land performance is of great concern. Chemical and physical processes and risks of degradation were evaluated for 887.09 km2 (88709 ha) in Kafr El-Sheikh Governorate, along the eastern bank of the Nile River (Rosetta branch). The revised Storie index and the Applied System for Land Evaluation (ASLE) were used to calculate land productivity index (LPI) and land capability index (LCI), respectively. Twenty soil profiles were dug to a depth of 150 cm. The multiple linear regression (MLR) was operated to predict LPI and LCI based on land degradation factors (LDF) including EC, ESP, bulk density, depth, slope, silt, and clay. Based on Landsat 8 satellite imagery and digital elevation model (DEM), the main landforms include levee, overflow mantle, recent terraces, middle terraces and old terraces. The area was affected by slight to moderate salinity hazards, slight to severe sodicity hazards, and moderate to extreme compaction hazards due to Mediterranean seawater intrusion besides mismanagement practices. The area was affected by low chemical degradation risks, but moderate to very high physical risks. The LP ranged from good to poor, while LC was good to fair. The MLR models showed high accuracy when predicting LPI and LCI based on EC, ESP, bulk density, silt, and clay. The models would be effective to verify the impacts of LDF on land's agricultural potential.
Journal of Soil Sciences and Agricultural Engineering
Mansoura University, Faculty of Agriculture
2090-3685
9
v.
5
no.
2018
229
236
https://jssae.journals.ekb.eg/article_35725_1766888307f37dc770b21c8b4eff1c3d.pdf
dx.doi.org/10.21608/jssae.2018.35725
Effect of Mineral, Organic, Biofertilizers and Humic Acid on Vegetative Growth and Fruit Yield Quality of Caraway Plants (Carum carvi L.)
H.
El-Banna
Veget. and Flori. Dept., Fac. Agric., Mansoura Univ.
author
K.
Fouda
Soil Sci. Dept., Fac. of Agric., Mansoura Univ., Egypt.
author
text
article
2018
eng
Effects of different fertilizers types, i.e., mineral fertilizers (100 % as a control) or 30 % combined with organic fertilizers (farmyard manure at 20 or 30 m3/ fed), bio-fertilizer and foliar application of humic acid on vegetative growth, yield and some nutrient contents of Caraway plant (Carum carvi L.) were studied at the Experimental station of Faculty of Agriculture, El-Mansoura University during the two growing seasons of 2016 and 2017. The results indicated that the highest mean values of the vegetative growth and fruit yield parameters of caraway plant were significantly increased when plants received 30 % of the recommended mineral fertilizer combined with farmyard manure at 30 m3/ fed in the presence of bio-fertilizer and sprayed with humic acid as compared with control (NPK at 300, 200 and 50 kg/ fed, respectively). In addition; N, P and K percentage in herb and seeds recorded the highest values with the same previous treatment. While, the highest values of NO3-N concentration in herb and seeds was obtained with full recommended dose of mineral fertilization (control treatment).
Journal of Soil Sciences and Agricultural Engineering
Mansoura University, Faculty of Agriculture
2090-3685
9
v.
5
no.
2018
237
241
https://jssae.journals.ekb.eg/article_35730_8f6501f581c586c063a0be0580cdf3ff.pdf
dx.doi.org/10.21608/jssae.2018.35730