Abstract
A field trial was conducted at Al-Hamool region, Kafr El-Sheikh Governorate, Egypt, during the two successive growing seasons 2009 and 2009/2010. The main goal of the present work is to study the effect of improving drainage conditions and chemical, physical properties of studied soil. Consequently, cultivation new crops in this area such as faba bean in winter season and new variety of hybrid rice as a summer crop. In the summer season, the soil was treated before transplanting of rice with the following treatments: 1. subsoiling, 2. subsoiling + application of 1.5 ton gypsum fed-1, ,3. subsoiling + application of 1 ton gypsum fed-1. + 50 kg calcium super phosphate, 4. subsoiling + 200 kg phosphogypsum fed-1 (byproduct of acid production). In the winter season faba bean variety Sakha 2 was planted and the treatments were: 1. control, 2. 100 kg calcium superphosphate 15.5% + 1 ton gypsum fed-1. + 100 kg phosphogypsum fed-1., 3. 100 kg calcium superphosphate 15.5% + 1 ton gypsum fed-1, 4. 200 kg phosphogypsum, 5. 100 kg calcium superphosphate 15.5% + 100 kg phosphogypsum, 6. 1.0 ton gypsum fed-1, 7. 1 ton gypsum fed-1 + 200 kg phosphogypsum, 8. 200 kg calcium superphosphate 15.5% fed-1 The main results of the present study can be summarized as follows: Decreasing the mean values of exchangeable sodium percentage (ESP) as a result of application of soil amendments. Increasing the mean values of total porosity, hydraulic conductivity and lowering the level of water table depth from soil surface. The losses of ammonium cation (NH4+) was decreased while the loss of nitrate ion, was increased. Decreasing salinity of groundwater after rice and faba bean cultivation. The production of hybrid rice was high under the conditions of this soil. The highest mean value is 5.7 tons fed-1 with the subsoiling combined with application of 200 kg phosphogypsum fed-1. The production of faba bean was increased as a result of decreasing salinity of this soil with cultivation a high tolerant variety (Sakha 2) to salinity and the highest mean value is 12.0 ton fed-1 under application of 100 kg calcium superphosphate 15.5% + 1 ton gypsum fed-1 + 100 kg phosphogypsum fed-1. From the abovementioned results, it could be recommended to give more care to the conditions of drainage and good farming practices for these soils with addition of soil amendments such as gypsum, calcium superphosphate and phosphogypsum, and cultivating new crop varieties that is tolerant to salinity for obtaining high productivity.
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Claims 8
Claim · model-written summary
Soil amendments decreased mean exchangeable sodium percentage.
- Taxon
- hybrid rice
Oryza sativae0 - Treatment
- soil amendmentse1
- Outcome
- exchangeable sodium percentage (ESP)e1
- Direction
- Decreasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new variety of hybrid rice”
e1“Decreasing the mean values of exchangeable sodium percentage (ESP) as a result of application of soil amendments.”
Claim · model-written summary
Soil treatment increased total porosity and hydraulic conductivity and lowered water table depth.
- Taxon
- hybrid riceOryza sativae0
- Outcome
- total porosity, hydraulic conductivity and lowering the level of water table depthe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new variety of hybrid rice”
e1“Increasing the mean values of total porosity, hydraulic conductivity and lowering the level of water table depth from soil surface.”
Claim · model-written summary
Soil treatments decreased ammonium loss.
- Taxon
- hybrid riceOryza sativae0
- Outcome
- losses of ammonium cation (NH4+)e1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new variety of hybrid rice”
e1“The losses of ammonium cation (NH4+) was decreased while the loss of nitrate ion, was increased.”
Claim · model-written summary
Soil treatments increased nitrate loss.
- Taxon
- hybrid riceOryza sativae0
- Outcome
- loss of nitrate ione1
- Direction
- increasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“new variety of hybrid rice”
e1“The losses of ammonium cation (NH4+) was decreased while the loss of nitrate ion, was increased.”
Claim · model-written summary
Groundwater salinity decreased after rice and faba bean cultivation.
- Taxon
- rice and faba bean
Vicia fabaOryza sativae0 - Outcome
- salinity of groundwatere0
- Direction
- Decreasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Decreasing salinity of groundwater after rice and faba bean cultivation.”
Claim · model-written summary
Hybrid rice production reached 5.7 tons fed-1 with subsoiling and 200 kg phosphogypsum fed-1.
- Taxon
- hybrid riceOryza sativae0
- Treatment
- subsoiling combined with application of 200 kg phosphogypsum fed-1e0
- Outcome
- production of hybrid ricee0
- Direction
- higheste0
- Value
- 5.7 tons fed-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production of hybrid rice was high under the conditions of this soil. The highest mean value is 5.7 tons fed-1 with the subsoiling combined with application of 200 kg phosphogypsum fed-1.”
Claim · model-written summary
Faba bean production rose and reached 12.0 ton fed-1 under calcium superphosphate, gypsum and phosphogypsum application.
- Taxon
- faba beanVicia fabae0
- Material
- Sakha 2e0
- Treatment
- 100 kg calcium superphosphate 15.5% + 1 ton gypsum fed-1 + 100 kg phosphogypsum fed-1e0
- Outcome
- production of faba beane0
- Direction
- increasede0
- Value
- 12.0 ton fed-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The production of faba bean was increased as a result of decreasing salinity of this soil with cultivation a high tolerant variety (Sakha 2) to salinity and the highest mean value is 12.0 ton fed-1 under application of 100 kg calcium superphosphate 15.5% + 1 ton gypsum fed-1 + 100 kg phosphogypsum fed-1.”
Claim · model-written summary
The authors recommend improved drainage, farming practices, soil amendments and salt-tolerant varieties for productivity.
Verbatim
e0“these soils with addition of soil amendments such as gypsum, calcium superphosphate and phosphogypsum, and cultivating new crop varieties that is tolerant to salinity for obtaining high productivity”
t0“FIELD CROPS”
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