Abstract
Kazakhstan currently faced with a serious deterioration in the state of natural resources and the environment in all the most important environmental indicators. Almost a third of the agricultural land is now degraded or is seriously threatened, and more than 10 million hectares of potentially arable land in the past has been abandoned. The article presents the results of research to improve the well-being of reclamation of soils of southern Kazakhstan. The studies were conducted in the field and in the lysimeters, with laying of experiments on the introduction of phosphogypsum and deep loosening. The results showed that the most promising is the option with the introduction of 5...7 t/ha of phosphogypsum and deep loosening in which the reduced alkalinity of soils, it improves soil alkalinity magnesium that is reduced magnesium content in the soil, increases the content of non-toxic salts and productivity of legumes. Soil application of phosphogypsum at the rate of 5 t/ha increase the calcium cations in the rooting zone of soils. On one of the variants of the experience as a result of using phosphogypsum norm 5 t/ha calcium content increased on 4.67 times. On option, where they grow soybeans, the calcium content amounted to 0.046 %. The introduction of phosphogypsum reduces the alkalinity of soils and reduces the amount of magnesium and increases the content of non-toxic salts СаЅО4, increases the yield of leguminous and cereal crops. Soybean yield in the control variant was 11.27 kg/ha. Soil application of phosphogypsum at the rate of 5 t/ha increased its yield is 31.4% compared to the control variant, the variant with deep loosening – 15.1 %. In the variant where the soil amended phosphogypsum and the deep tillage, soybean yields by 34.1 % higher than the control variant. Therefore, the proposed techniques improve the soil of magnesium solontsovaya the South of Kazakhstan are promising.
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Claims 11
Claim · model-written summary
Phosphogypsum with deep loosening reduced soil alkalinity.
- Treatment
- 5...7 t/ha of phosphogypsum and deep looseninge0
- Outcome
- alkalinity of soilse0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“the introduction of 5...7 t/ha of phosphogypsum and deep loosening in which the reduced alkalinity of soils”
Claim · model-written summary
Phosphogypsum and deep loosening reduced soil magnesium.
Not reportedTaxonComparator
Verbatim
e0“phosphogypsum and deep loosening in which the reduced alkalinity of soils, it improves soil alkalinity magnesium that is reduced magnesium content in the soil”
Claim · model-written summary
Phosphogypsum and deep loosening increased non-toxic salts.
Not reportedComparator
Verbatim
e0“deep loosening in which the reduced alkalinity of soils, it improves soil alkalinity magnesium that is reduced magnesium content in the soil, increases the content of non-toxic salts and productivity of legumes.”
Claim · model-written summary
Phosphogypsum and deep loosening increased legume productivity.
Not reportedComparator
Verbatim
e0“deep loosening in which the reduced alkalinity of soils, it improves soil alkalinity magnesium that is reduced magnesium content in the soil, increases the content of non-toxic salts and productivity of legumes.”
Claim · model-written summary
Phosphogypsum at 5 t/ha increased calcium cations in the rooting zone.
- Treatment
- phosphogypsum at the rate of 5 t/hae0
- Outcome
- calcium cations in the rooting zone of soilse0
- Direction
- increasee0
Not reportedTaxonComparator
Verbatim
e0“Soil application of phosphogypsum at the rate of 5 t/ha increase the calcium cations in the rooting zone of soils.”
Claim · model-written summary
Calcium content increased 4.67 times under 5 t/ha phosphogypsum.
Not reportedTaxonComparator
Verbatim
e0“as a result of using phosphogypsum norm 5 t/ha calcium content increased on 4.67 times.”
Claim · model-written summary
The soybean variant had calcium content of 0.046%.
- Taxon
- soybeans
Glycine maxe0 - Outcome
- calcium contente0
- Value
- 0.046 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On option, where they grow soybeans, the calcium content amounted to 0.046 %.”
Claim · model-written summary
Control soybean yield was 11.27 kg/ha.
- Taxon
- SoybeanGlycine maxe0
- Outcome
- yielde0
- Value
- 11.27 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yield in the control variant was 11.27 kg/ha.”
Claim · model-written summary
Phosphogypsum at 5 t/ha raised soybean yield 31.4% over control.
- Treatment
- phosphogypsum at the rate of 5 t/hae0
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 31.4%e0
- Comparator
- control variante0
Not reportedTaxon
Verbatim
e0“Soil application of phosphogypsum at the rate of 5 t/ha increased its yield is 31.4% compared to the control variant”
Claim · model-written summary
Deep loosening raised soybean yield 15.1% over control.
Not reportedTaxonComparatorOutcomeDirection
Verbatim
e0“the variant with deep loosening – 15.1 %.”
Claim · model-written summary
Combined phosphogypsum and deep tillage raised soybean yield 34.1% over control.
- Taxon
- soybeanGlycine maxe0
- Treatment
- phosphogypsum and the deep tillagee0
- Outcome
- soybean yieldse0
- Direction
- highere0
- Value
- 34.1 %e0
- Comparator
- control variante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soil amended phosphogypsum and the deep tillage, soybean yields by 34.1 % higher than the control variant.”
The same questions in other papers
tillage · yield · Glycine max (soybean)Positive and negative results
263 papers in the same direction as this paper · 100 in the opposite direction · 26 reporting no difference from an alternative
- no effect
- no effect
- no effect
386 papers more in this group
See all 390 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.