Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF PREVIOUS CROP AND N- RATE ON PRODUCTIVITY AND ECONOMIC EVALUATION OF GROWNING BREAD WHEAT USING RAISED BED TECHNIQUE
523
536
EN
E.
Osman
Soils, water and Environment Research Institute, Agric. Res. Center, Giza, Egypt.
A.
Swelam
Wheat Res. Dept., Field Crop Research Institute, Agric. Res. Center, Giza, Egypt.
Sheren
Nathan
Wheat Res. Dept., Field Crop Research Institute, Agric. Res. Center, Giza, Egypt.
10.21608/jssae.2019.42564
This study was carried out at different locations (on farmers’ fields) in Sharqia Governorate, Egypt, during 2012/2013 season to find out the effect of previous crop (rice, cowpea, cotton and maize), planting methods (traditional and raised bed) and nitrogen fertilizer rate (120 and 180 kg N ha<sup>-1</sup>) on some wheat (var. Mesr 1) yield components, grain, straw and biological yields and NPK contents in grain and straw as well. Water applied and net return of growing wheat on raised bed, compared to confidential method (flat) were considered. The most important findings could be summarized as follows:
Regardless the previous crop and the assessed N-rate, the yield attributes of spike No m<sup>-2</sup>, grain No spike<sup>-1</sup>, grain weight spike<sup>-1</sup> and 1000 grain weight were higher under raised bed planting, comparable with traditional planting. In addition, grain, straw and biological yields exhibited the same trend. The abovementioned variables were higher as cowpea was the preceding crop. Regardless different locations, raised bed planting resulted in higher figures for the abovementioned variables even with lower N-rate e.g.120 kg N ha<sup>-1</sup>, comparing with traditional planting with supplying N at180 kg ha<sup>-1</sup>.
Higher N, P and K uptake for grain and straw yields were attained due to raised bed planting, comparable with traditional planting, and the values were greater as cowpea was the previous crop with supplying N at 180 kg ha<sup>-1</sup> rate.
The applied irrigation water was varied from 3991 to 4513 m<sup>3</sup> ha<sup>-1</sup> under raised bed planting method at different locations, comparing with 5781 m<sup>3</sup> ha<sup>-1</sup> recorded with traditional planting.
In general, the highest cost estimated is about 5695 LE with traditional planting method, whereas, the lowest cost estimated i.e. 5295 LE was recorded with raised bed planting receiving the lowest N rates. The highest net return (27961 LE) was achieved due to growing wheat crop, after cowpea crop, on raised bed with supplying N at 180 kg ha<sup>-1</sup>rate which. On the contrary, the lowest net return (15438 LE) was noticed with traditional planting method.
On conclusion, it is advisable to grow wheat crop, after a legume crop, on raised bed, where higher figures of wheat grain yield and its N, P and K contents were obtained. In addition, saving irrigation water and conserving soil fertility as well as higher net economic return were with planting wheat on raised bed instead of the conventional method.
previous crop,N -rate,water applied,wheat crop,raised bed planting,net return
https://jssae.journals.ekb.eg/article_42564.html
https://jssae.journals.ekb.eg/article_42564_e4c8e7c5761061d98b477efba8d496e7.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
SOIL TAXONOMIC UNITS AND MICRONUTRIENTS CONTENT OF BAHARIYA OASIS, EGYPT
537
548
EN
I.
Hegazi
Soil, water and Environment Research Institute – ARC, Giza, Egypt
A.
Abd-ElGhane
Soil, water and Environment Research Institute – ARC, Giza, Egypt
G.
El-Shiekh
Soil, water and Environment Research Institute – ARC, Giza, Egypt
M.
Nasef
Soil, water and Environment Research Institute – ARC, Giza, Egypt
10.21608/jssae.2019.42566
The relationship between some extractable micronutrient contents <em>i.e., </em>Fe, Mn, Zn,Cu and B and their relation to the soil taxonomic units of an area south east El-Bauity in El-Bahariya Oasis, Egypt are study. Twenty one representative soil profiles and eighteen pits were dug in the study area and classified to the soil family level according to the Soil Taxonomy USDA (2010). The obtained results are summarized as follows:
The studied area belongs to tow orders, four suborder, sixteen families as follow:
- <em>Order Aridisols </em> includes two suborders i.e., salids and gypsids
- <em>Order Entisols </em>has two sub orders <em>orthents </em>and <em>psamments</em>.
<em>Order Aridisols </em> covers ten soil families, their texture range from loamy sand to clayey, whereas order <em>Entisols </em>contains six families their soil texture is sandy to sandy loam soils.
Generally the soils of order <em>Entisols </em>have high percent of sand fraction and Fe content, averages are 74.6 % and 4.93 µg g<sup>-1</sup> respectively, but have low averages of organic matter, gypsum, lime contents and other micronutrients. Whereas soils of order <em>Aridisols </em>have high averages of clay content and all other variables except Fe.
Soils of <em>Aridisols </em> contain higher amounts of micronutrients Mn, Zn, Cu and B than in soils families of<em> Entisols</em>, but in contrast values of Fe are much higher in <em>Entisols </em>as compared to<em> Aridisols </em> .
Averages of DTPA extractable amounts of Fe, Mn, Zn, Cu and B in <em>Aridisols </em>samples ranged between 2.9, 3.2, 2.1, 1.1 and 2.5 µg g<sup>-1</sup> respectively, while the corresponding values in <em>Entisols </em>are 5.6, 2.7, 1.9, .6 and 1.3 µg g<sup>-1</sup>, respectively.
Some values are greater than the marginal levels reported in the literature i.e. about 12 % for Fe, 84 % for Mn, 20 % for Zn, 36 % for Cu and 8 % for B in soil families of <em>Aridisols</em> respectively, whereas in <em>Entisols </em>soils were 40.9, 95.5, 9.1, 4.6 and 5.2 % for Fe, Mn, Zn, Cu and B, respectively.
Both orders have averages of some micronutrients lower than the critical levels i.e. about 43.9 % for Fe, 81.2 % for Zn, 64.9 % for Cu and 33.5 % for B.
Soil Taxonomy,Soil fertility,micronutrients and Bahariya Oasis
https://jssae.journals.ekb.eg/article_42566.html
https://jssae.journals.ekb.eg/article_42566_3eca1a347bb972dbf2fff67cfed9732c.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
NITROGEN EFFECIENCY IN MAIZE UNDER SALINE-SODIC CONDITIONDS AS AFFECTED BY UREA IN COMBINATION WITH SOME ORGANIC AMENDMENTS
549
568
EN
M.
ِAbdel-Aziz
Soil, Water and Environmental Res. Institute, ARC, Giza, Egypt.
Rania
El-Shal
Soil and Water Dept., Faculty of Agriculture, Tanta Univ.Egypt.
Dalia
Sayed
Soil, Water and Environmental Res. Institute, ARC, Giza, Egypt.
10.21608/jssae.2019.42573
Effects of application of organic amendments i.e, compost (COM), farmyard manure (FYM) and town refuse manure (TR) (at a rate of 5 Mg fed.<sup>-1 </sup>corresponding to 12 Mg ha<sup>-1</sup>) with or without different levels of N (i.e, 0, 60, 90 and 120 kg N fed.<sup>-1</sup>, corresponding to 0, 143, 215 and 286 kg N ha<sup>-1</sup>) in the form of urea on maize (<em>Zea mays L</em>. cv. Triple hybrid 310) grown on a saline-sodic loamy sand soil at Gelbana village, Northern Sinai Governorate, Egypt were studied during the two successive summer seasons of 2013 and 2014. The treatments were arranged in a randomized complete block design with three replicates. Soil content of available N, P, K, Fe, Mn and Zn increased whereas the electrical conductivity (EC dSm<sup>-1</sup>) and soil pH values decreased due to these treatments. The applied organic amendments and urea as well as their combinations, generally increased significantly all the growth parameters i.e. plant height, grain weight ear<sup>-1</sup> and 100-grain weight and consequently grain yield in the two growing seasons. Values of N, P, K Fe, Mn and Zn uptake by maize plant increased significantly in both the growing seasons.
The highest values of apparent nitrogen recovery (ANR) were obtained due to the treatment T R + (90 kg N fed.<sup>-1</sup>) at the two growing seasons, however, the highest nitrogen agronomic efficiency (NAE) was obtained owing to the treatment consisting of COM + N at a rate of 60 kg N fed.<sup>-1</sup>. Proline content decreased with increasing N rate up to 120g N fed.<sup>-1</sup>; however, the highest proline content (5.94 g g<sup>-1</sup> fresh weight) was obtained due to application of TR without urea fertilizer. In the contrary, total chlorophyll content increased with increasing N rate up to 120 kg N fed.<sup>-1</sup> which resulted in the highest content of chlorophyll when this rate of N was accompanied with COM during the two growing seasons. The highest rate of N fertilization <em>i.e.,</em> 120 kg N fed.<sup>-1</sup> combined with TR or FYM compost was of the most superior effect on protein content and nutrient contents. This was found to be true for both 2013 and 2014 seasons.
Saline-sodic soil,urea,compost,FYM,town refuse and maize
https://jssae.journals.ekb.eg/article_42573.html
https://jssae.journals.ekb.eg/article_42573_1cee61841509d9f577b1a9d3c16fe4f2.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
MONTHLY REFERENCE EVAPOTRANSPIRATION MODELING USING GENE EXPRESSION PROGRAMMING FROM MINIMUM CLIMATIC DATA
569
589
EN
M.
Mattar
Agric. Eng. Res. Inst. ARC, Egypt
10.21608/jssae.2019.42575
Evapotranspiration is a key factor for water balance, irrigation scheduling, and crop yield. Even though, Penman-Monteith FAO-56 (PMF-56) equation had estimated the highest accuracy reference evapotranspiration (ET<sub>o</sub>), it required complete climatic records, which may not be easily available. The present study is to develop and evaluate a gene expression programming (GEP) model for estimating mean monthly ET<sub>o</sub> using minimal number of climatic data. Climatic variables used to estimate ET<sub>o</sub> are maximum and minimum air temperature (T<sub>max</sub> and T<sub>min</sub>), mean relative humidity (RH), solar radiation (R<sub>s</sub>), and wind speed at 2-m height (u<sub>2</sub>). The data used in the analysis refer to 32 weather stations available at different locations in Egypt through the CLIMWAT database. The PMF-56 method was used as the reference standard for evaluating the developed GEP models based on statistical criteria such as: index of agreement (IA) and the root mean square error (RMSE). The results showed that the accuracy of the GEP model significantly improved when either RH or u<sub>2</sub> was used as additional input variables. The GEP model with the inputs: T<sub>max</sub>, T<sub>min</sub>, <em>RH</em>, andu<sub>2</sub> showed the highest IA (0.991 and 0.990) and the lowest RMSE (0.426 mm d<sup>-1</sup> and 0.430 mm d<sup>-1</sup>) for training and testing sets, respectively. Comparing the results of GEP models with other empirical models showed that ET<sub>o</sub> values estimated by using the GEP models are more accurate. Accordingly, the GEP technique can be employed successfully in modeling ET<sub>o</sub> from the available climatic data and allowed for providing simple algebraic formulas.
Evapotranspiration,Gene expression programming,Penman-Monteith,Empirical methods
https://jssae.journals.ekb.eg/article_42575.html
https://jssae.journals.ekb.eg/article_42575_c54f9ff0f9f89c426f48044b51411141.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
CENTER-PIVOT IRRIGATION WATER MANAGEMENT BASED ON SOIL SPECTRAL REFLECTANCE TECHNIQUE
591
601
EN
M.
Elmarsafy
Agric. Eng. Res. Inst. ARC, Egypt
H.
Farag
Agric. Eng. Res. Inst. ARC, Egypt
H.
Mohawed
Agric. Eng. Res. Inst. ARC, Egypt
K.
Allam
Agric. Eng. Res. Inst. ARC, Egypt
10.21608/jssae.2019.42568
Center pivot irrigation system has the potentiality for economically net return of various crop patterns, although it’s higher fixed cost’s inputs. Therefore, water management under the specified center pivot irrigation system can play a crucial role in maximizing water unit productivity and enhancing physical agricultural resources sustainability. Hereby, the aim of this research was to evaluate the optional of a general reflectance model based solely on soil moisture distribution pattern as a key for a farm irrigation management under center pivot irrigation system. Data revealed that the relative reflectance was strongly correlated with soil moisture contents. However, the best correlation was found act high soil moisture level between the reflectance values of 700 nm (Red-NIR) wave length and the volumetric water content (R²=0.9) at the short time (one hour). Moreover, the results of this study help to appear the strong in influence of soil moisture on spectral reflectance and absorption features and should aid in the development operational and management algorithms of on-farm irrigation systems.
https://jssae.journals.ekb.eg/article_42568.html
https://jssae.journals.ekb.eg/article_42568_11760048b6801bfc61624272ff313ebc.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF FARMYARD MANURE, PHOSPHORUS AND ZINC ON YIELD, AND GRAIN QUALITY OF MAIZE (Zea mays l.)
603
619
EN
Magda
Ewais
Soils, Water and Environ. Res., Inst., Agric. Res. Center, Giza, Egypt
Sahar
Zakaria
Soils, Water and Environ. Res., Inst., Agric. Res. Center, Giza, Egypt
A.
Mohamed
Soils, Water and Environ. Res., Inst., Agric. Res. Center, Giza, Egypt
10.21608/jssae.2019.42571
Two field experiments were carried out during the summer seasons of 2013 and 2014 on maize plants (c.v. single hybrid 30K8) grown on a sandy loam soil at El-kassasin, Farm(30º 33׳ 31״ N- 30° 56׳ 7״ E, elev. 15.8 m), Ismailia Governorate, Egypt, to study the effect of FYM (0 and 10 m<sup>3</sup> /fed), P (15, 30 and 45 kg P<sub>2</sub>O<sub>5</sub>/fed) and Zn as foliar spraying (0and 100 mg Zn/L) and their combinations on growth, yield and its components as well as grain quality of maize. The experiments were laid out in a split- split plot, arranged in a randomized complete block design with three replications. The obtained results showed that application of FYM significantly increased the yield, yield components as well as some grain mineral contents and grain quality. All the studied characteristics were significantly affected by P- fertilizer. Application of P at the rate of 30 kg P<sub>2</sub>O<sub>5</sub>/fed resulted in the maximum plant height (250.75 cm), cob weight (306.08g), 100-grain weight (43.50 g), grain weight/ear (255.44 g), grain yield (3769.25 kg/ fed) and protein yield (478kg fed<sup>-1</sup>) as compared with the other P- fertilizer rates .Foliar application of zinc led to significant response of all studied characteristics. Application of FYM, p-fertilizer and foliar spraying of Zn in combination gave the best yield, yield components as well as some grain mineral contents and grain quality. Therefore, it could be concluded that the application of 10 m<sup>3 </sup>FYM/fed +30 kg P<sub>2</sub>O<sub>5</sub>/fed + foliar spraying of Zn (100 mg Zn/L) is the best formula for achieving the best crop and improving yield quality.
Foliar spraying of Zn,FYM,grain quality,Maize,p-fertilizer,yield,yield components
https://jssae.journals.ekb.eg/article_42571.html
https://jssae.journals.ekb.eg/article_42571_e582a39013d290835b69ab0ec301a6cf.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF IRRIGATION WITH DRAINAGE WATER ON PHYSIOLOGICAL PROPERTIES OF WHEAT PLANT
621
636
EN
Soad
El-Feky
Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
S.
Gazia
Soil, Water and Environment Research Institute, ARC Egypt.
Mai
Ghazal
Soil, Water and Environment Research Institute, ARC Egypt.
10.21608/jssae.2015.42621
The impact of irrigation with wastewater supplied from drain No. 7, Kafr El-Shiekh, Egypt on wheat plant, was investigated. Growth properties, photosynthetic pigment content and the antioxidant system of wheat plant were estimated. Furthermore, heavy metals contents in the collected samples of soil, water from different sites and heavy metals accumulation in the studied plants. For this purpose, two groups of wheat plants were considered. The first group obtained from fields which irrigated using fresh water, while the other group was irrigated using water of drain No.7 from the selected five sites of drain 7. The obtained results revealed that drainage water contained significant amounts of heavy metals (Cd, Ni and Cu) warranted a pollution problem as their amounts exceed the maximum recommended concentrations according to FAO guidelines for trace metals in irrigation water. The wheat plants accumulate significant amounts of heavy metals in their shoots, straw and grains and showed a significant decrease in, fresh weight and dry weight of shoots and roots, accompanied by a marked reduction in photosynthetic pigment content. Significant increase in the activities of antioxidant enzymes and in total carbohydrate content in response to irrigation with wastewater. Cadmium was higher than critical levels at all sites in water. Cupper, Cd and Pb concentration at all sites were lower than critical levels in soil. Cupper,Cd and Pb concentration (ppm) in grains and straw of different sites were increased gradually from site 1 up to site 5. Lead values were the highest and Cd values were the lowest in grains and straw, but Pb concentrations at straw were higher than in grains. Cupper, Cd and Pb concentrations were lower than critical levels in grains. Cupper and Cd concentration were lower than critical levels, but Pb concentration was higher than critical levels in straw.
Drainage water,Irrigation,Wheat,Heavy metals and antioxidant enzymes
https://jssae.journals.ekb.eg/article_42621.html
https://jssae.journals.ekb.eg/article_42621_0db5f2e0e39b2305628e9f113dbd18df.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
INFRA-RED DRYING OF ONION SLICES.
637
654
EN
A.
Matouk
Agric Eng. Dept., Fac. of Agric., Mansoura Univ.
M.
El-Kholy
Agric. Eng. Res. Institute.
A.
Tharwat
Eng. Dept., Fac. of Agric., Mansoura Univ.
A.
Anter
Agric. Eng. Dept., Fac. of Agric., Mansoura Univ.
10.21608/jssae.2015.42611
A study was carried out to test and evaluate the use of infra-red radiation as a heat energy source for drying onion slices( <em>Allium cepa</em> L.) using a laboratory scale infra-red dryer.
The studied parameters included four different levels of infra-red radiation intensity (0.861, 0.973, 1.039 and 1.161 kW/m²), three different levels of inlet air temperature (40, 50 and 60 <sup>o</sup>C ) and three different thicknesses of onion slices ( 2, 4 and 6 mm). All the experimental runs were conducted at air velocity of 1 m/s. Meanwhile, two different drying models, simple exponential model (Lewis's 1921) and the modified exponential model (Henderson and Pabis's 1961) were examined for describing the drying behavior and predicting the changes in moisture content of onion slices during the drying process. Quality evaluation tests were also conducted for the dried onion slices. The measured parameters included, Thiosulphinates, anthocyanin and rehydration ratio. The results showed that:
1- The drying rate of onion slices increased with the increase of radiation intensity and drying air temperature while, it was decreased with the increase of slices thickness.
2- Both studied models could describe the drying behavior of onion slices satisfactory. However, the simple exponential model (Lewis's 1921) was selected .
3- The onion slices dried at radiation intensity of 0.861 kW/m<sup>2</sup>,air temperature of 50 <sup>o</sup>C and slices thickness of 4 mm recorded the highest quality of the dried samples in terms of thiosulphinates and anthocyanin contents and the best rehydration ratio .
https://jssae.journals.ekb.eg/article_42611.html
https://jssae.journals.ekb.eg/article_42611_34ea55f27d271e3afe28140723949374.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF FERTILIZING INTEGRATED SYSTEM ON CANTALOUPE PLANTS IN NEWLY RECLAIMED SOIL .
655
666
EN
M.
Ragab
Dept., Fac. of Agric., Mans. Univ., Egypt Economic Entomology
E.
El-gameely
Horticulture Dept., Fac. of Agric., Mans. Univ., Egypt
G.
Labeeb
Soils Dept., Fac. of Agric., Mans. Univ., Egypt
10.21608/jssae.2015.42620
Two field experiments ( 2013- 2014) were conducted in Zaian region , Dakhlia governorate to study the effect of fertilizing integrated system (100 % organic, 50 % organic + 50 % mineral , 100 % mineral and local treatment ) on yield , N, K, Na and nitrate content of cantaloupe plant .
<strong>The obtained results can be summarized in :</strong>
Fully mineral fertilization treatment achieve the highest fresh weight of leaves and 100 % organic give the lowest value . Using 100% organic fertilizer caused a reduction in fruit number amounted by 49.29 % compared with 50 % organic + 50 % mineral fertilization treatment. Relative yield of 100 % organic fertilization treatments amounted by 74.28 % compared with 100 % mineral fertilization treatment
In spite of a very little differences were found in rounded index of fruits as a result of applying the studied treatments 100 % organic fertilization treatments recorded the highest rounded index value ,0.996 . Fleshy part percentage and dry weight percentage of fleshy part of fruit negatively affected by mineral fertilization. 100% organic fertilization recorded85.94 % and 7.8 % for the same order of the same traits.
The highest values of N leave contents ( 2.050 % and 2.017 % ) were obtained with treatments which receive higher amounts of mineral fertilizers and the lowest values ( 1.915 % and 1.985 % ) were obtained with treatments which receive higher amounts of organic fertilizers. The treatments of 100 % organic fertilization and 50 % organic + 50 % mineral fertilization showed a sever reduction in N content of Cantaloupe stems.
cantaloupe stems have the highest concentration of potassium than that of the other parts, where fleshy part of fruit took the second order in this respect and leaves comes as a latest one . Full organic fertilizer treatments got the highest potassium concentration means of leaves. fleshy part of fruit contain a higher sodium content than that of leaves and stems , approximately 1.66 : 1.75 fold than that of leaves and 2.11: 2.54 fold than that of stems .
Cantaloupe stems contain the highest level free nitrate – N compared to leaves and fleshy part of fruits, where nitrate –n content of cantaloupe fruit fleshy part approximately amounted by one fifth of leaves free nitrate-N and one tenth of the stem free nitrate N. The calculated free nitrate content ( fresh weight basis ) of local, 100 % mineral , 50 % organic + 50 % mineral and 100 % organic fertilization treatment 117.95, 91.95, 88.75 and 94.30 ppm , respectively.
The threshold amount of fleshy part eatable of cantaloupe fruit according to the most acceptable daily intake of nitrate for adult normal person is 2.75 Kg and 2.20 Kg of organic produced cantaloupe and local produced cantaloupe under the conditions of this study .
Cucumis melo var. cantalupensis,N content,K content,Na content and nitrate content
https://jssae.journals.ekb.eg/article_42620.html
https://jssae.journals.ekb.eg/article_42620_dc2efc9feab93a1793496f36a09d49a0.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF EXTERNALLY MOUNTED SHADING SCREEN ON MICROCLIMATIC CONDITIONS OF GREENHOUSE CANTALOUPE CROP EQUIPPED WITH EVAPORATIVE COOLING SYSTEM
667
685
EN
10.21608/jssae.2015.42614
The aim of this experimental work was to investigate the effect of two different types of cooling pads with and without externally mounted shading screen on growth, development, productivity, and fruit quality of cantaloupe crop. Two similar gable-even-span greenhouses were utilized at EL-Sabahia Horticultural Research Station (latitude and longitude angles, respectively, are 31.22ºN and 30.50°E, and 3.00 m mean altitude underneath the sea level), Alexandria, to grow and produce cantaloupe crop during summer of two successive growing seasons (2009 and 2010). Each greenhouse was equipped with complete evaporative cooling system based on cooling pads and extracting fans and shaded using shading screens mounted externally to reduce solar radiation inside the greenhouse and consequently increase the effectiveness of evaporative cooling systems. Two different cooling pads (one of locally available materials (LPM), and the other of cross-fluted cellulose pads (CCP) were functioned with shading to cool the two greenhouses. The obtained data revealed that, the indoor air temperatures of the shaded greenhouse were lower than the greenhouse without shading. The maximum indoor air temperatures without operating the evaporative cooling system reached to 37.8 and 41.9<sup>o</sup>C for the shaded and not-shaded greenhouses, respectively. The hourly average indoor air temperatures when operating the two evaporative cooling systems with two different cooling pads (LPM and CCP), respectively, were 28.4 and 27.3 <sup>o</sup>C. The maximum indoor air temperatures for the two greenhouses when operating the evaporative cooling systems with and without shading screen were 28.5 and 31.4ºC, respectively. The maximum indoor temperatures were 29.75 and 28.85 <sup>o</sup>C, while, the hourly average indoor air temperatures were 27.50 and 26.37 <sup>o</sup>C for the two greenhouses with operating evaporative cooling system and shading screens, respectively. The obtained results also showed that, the hourly average vapour pressure deficit (VPD) of the indoor air during daylight times for the two greenhouses with shading screen was 1.458 and 1.480 kPa, consequently the cantaloupe plants were not heat stressed under these levels of VPD (danger level > 2.0 kPa). Utilizing the evaporative cooling systems for the two greenhouses with shading screens have had the same effect on the growth, development, productivity of fresh yield, and quality of fruit characteristics.
https://jssae.journals.ekb.eg/article_42614.html
https://jssae.journals.ekb.eg/article_42614_d9953d4f71cae48ccf1791b5b3fd0ad0.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
SALT STRESS MITIGATION BY SEED SOAKING AND MAGNETICALLY WATER TREATMENT TECHNOLOGY
687
703
EN
S.
Mansour
Soil, Water and Environment Research Institute, ARC, Giza, Egypt.
M.
Reda
Soil, Water and Environment Research Institute, ARC, Giza, Egypt.
E.
Abo-Ela
Soil, Water and Environment Research Institute, ARC, Giza, Egypt.
S.
Abo-Steet
Soil, Water and Environment Research Institute, ARC, Giza, Egypt.
10.21608/jssae.2019.42595
In an endeavor to alleviate the inherent problems an agricultural production such as water shortages, desertification and salinity……. some possible manipulation on soil and seeds were evaluated . Field experiment was carried out to achieve the main objective of this research, at El-Ismailia Research Station, El-Ismailia Governorate, for two successive winter seasons (2012\2013 and 2013\2014 ), to determine the best treatment possible on amelioration of sandy loam soil properties and its productivity, of Faba bean crop Giza 717 under drip irrigation system, and irrigated well water salinity. Seed soaking in some solutions' of different components for 2 hours before cultivation, as well as the different addition of magnetic iron ore (magnetite) at a rate of 150 kg fed<sup>-1</sup>. one of the treatment for magnetically water, and a mixture ores(control) at a rate of 200 kg fed<sup>-1</sup>. in both the soil alone.
The obtained data showed that addition any of the previous treatments led to an improvement in some of the physical and chemical properties, due to increasing the moisture content of the soil; available water; hydraulic conductivity values. While, bulk density, total calcium carbonate ,soil penetration, EC<sub>e </sub>and pH were decreased by using soil treatment with magnetic iron ore (magnetite ) comparing using the mixture ores (control). Furthermore, Biotwol spray with the treatment of magnetic iron ore gave highest values of the yield (1470 kg fed<sup>-1</sup>. ) compared with spraying yeast with either magnetic iron ore or a mixture of ores (control).
Seed soaking,magnetic iron ore,Irrigation water salinity,treatment magnetic water
https://jssae.journals.ekb.eg/article_42595.html
https://jssae.journals.ekb.eg/article_42595_87a1f537f6880ae43e4d3f7a9f743904.pdf
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
6
5
2015
05
01
EFFECT OF IRRIGATION INTERVAL AND PHOSPHORUS FERTILIZATION RATE ON FABA BEAN (Vicia faba l.) YIELD, YIELD COMPONENTS AND SOME CROP-WATER RELATIONSHIPS
705
718
EN
M.
Ewis
Soils, Water & Environ. Res. Inst., Agric. Res. Center, Giza, Egypt
K.
Abd El-Latif
Soils, Water & Environ. Res. Inst., Agric. Res. Center, Giza, Egypt
M.
Badawi
Soils, Water & Environ. Res. Inst., Agric. Res. Center, Giza, Egypt
10.21608/jssae.2015.42599
A field experiment was conducted during 2012/13 and 2013/14 winter seasons at Sids Agric. Res. Station, Beni-Swief Governorate, Egypt. These trials aiming at investigating the effect of irrigation intervals, i.e. 14, 21 and 28 days and phosphorus fertilization rates of 7.5, 15 and 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup> and interaction on seed yield components, seed and straw yields and some crop-water relations of faba bean crop (Giza–843 hybrid). The adopted treatments were assessed in a split-plot design with four replicates. The most important results could be summarized as follows:-
<strong>*</strong>Seed & straw yield and yield components e.g. plant height, pods N<span style="text-decoration: underline;"><sup>o </sup></span>plant<sup>-1</sup>, seeds N<span style="text-decoration: underline;"><sup>o</sup></span> pod<sup>-1</sup> and 100-seed weight were significantly influenced due to the adopted irrigation and P- rate treatments and interaction as well in 2012/13 and 2013/14. Higher values of seed yield and the abovementioned yield components resulted from irrigating at 21 days interval, whereas plant height and straw yield were positively responded with 14 days interval. The 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup> rate resulted in higher values of seed & straw yields and yield components e.g. pods N<span style="text-decoration: underline;"><sup>o </sup></span>plant<sup>-1</sup>, seeds N<span style="text-decoration: underline;"><sup>o</sup></span> pod<sup>-1</sup> and 100-seed weight and plant height as well. Interaction of irrigating at 21days interval and 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup> rate exhibited higher values of the abovementioned variables, except plant height where the highest values were noticed with irrigating at 14 days interval as interacted with 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup> rate.
<strong>*</strong> The highest Water consumptive use (Cu) values were attained due to irrigating at 14 days interval, whereas Water Productivity and Water Use Efficiency were the highest as irrigation was practiced at 21 days interval. The highest figures of Cu, WP and WUE were achieved with supplying P fertilizer at the highest rate (30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup>). Irrigating at 14 days interval as interacted with 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1 </sup>rate exerted the highest Cu values, whereas interaction of irrigation at 21 days interval and 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup>rate exhibited the highest WP and WUE values.
<strong>* </strong>Under the conditions of the present experiment and to conserve the limited irrigation water resources, as an important national issue, it is advisable to irrigate faba bean crop at 21 days interval and supplying P-fertilizer at 30 kg P<sub>2</sub>O<sub>5 </sub>fed<sup>-1</sup> rate in order to obtain reasonable values of seed yield, water productivity and water saving as well.
Faba bean,seeds yield,yield components,Irrigation intervals,phosphorus fertilization rates,crop - water relations
https://jssae.journals.ekb.eg/article_42599.html
https://jssae.journals.ekb.eg/article_42599_d41d8cd98f00b204e9800998ecf8427e.pdf