Abstract
The results of studies on the effect of bare and green-manured fallow (melilot, peas, peas + oats), as well as methods of placing green manure crops and manure (plowed to a depth of 18–20 cm and cultivated at 8–10 cm) on the fertility and productivity of dark chestnut soil are presented. Field experiment took place in the steppe zone of the Republic of Tuva. The weather conditions during the study period were noted as characteristic for the conditions of the steppe zone: 2016 and 2017 were arid, whereas 2018 was wet. Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat. In autumn, after bare fallow, the moisture content was higher by 14.7%, in spring by 32.8%. The surface placement of green manure crops contributed to a lesser desiccation of the soil. The best supply of nitrate nitrogen before sowing wheat was noted in fallow fi elds with manure and melilot (17.1-15.6 mg/kg). Methods of placing organic fertilizers did not affect the nitrate content in the soil. The yield of spring wheat was affected by preceding crops and methods of placing fertilizers. The highest yield of spring wheat was obtained in the bare-fallowed fertilized fi eld, which was by 0.2–0.5 t/ha higher than with all types of bare or green-manured fallow. Deep (18–20 cm) placement of manure increased the yield of spring wheat by 0.2 t/ha (10.5%). Placement of green-manured crops on the surface made it possible, on average during the experiment, to increase this indicator by 0.1–0.3 t/ ha (7.1–20%).
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Claims 9
Claim · model-written summary
Bare fallow was more effective than green-manured fallow in accumulating productive soil moisture.
- Taxon
- spring wheat
Triticum aestivume0 - Treatment
- bare fallowe0
- Outcome
- accumulation of productive moisturee0
- Direction
- more effectivee0
- Comparator
- green-manured onee0
- Setting
- steppe zone of the Republic of Tuvae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat”
e1“Field experiment took place in the steppe zone of the Republic of Tuva”
Claim · model-written summary
In autumn, bare fallow raised soil moisture content by 14.7% over green-manured fallow.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- bare fallowe2
- Outcome
- moisture contente2
- Direction
- highere2
- Value
- 14.7%e2
- Qualifier
- In autumne2
- Comparator
- green-manured onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat”
e2“In autumn, after bare fallow, the moisture content was higher by 14.7%”
Claim · model-written summary
In spring, bare fallow raised soil moisture content by 32.8% over green-manured fallow.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- bare fallowe0
- Outcome
- moisture contente3
- Direction
- highere3
- Value
- 32.8%e3
- Qualifier
- in springe3
- Comparator
- green-manured onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat”
e3“the moisture content was higher by 14.7%, in spring by 32.8%”
Claim · model-written summary
Surface placement of green manure crops lessened soil desiccation.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- surface placement of green manure cropse4
- Outcome
- desiccation of the soile4
- Direction
- lessere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat”
e4“The surface placement of green manure crops contributed to a lesser desiccation of the soil”
Claim · model-written summary
Fallow with manure and melilot gave the best nitrate nitrogen supply before sowing wheat, 17.1-15.6 mg/kg.
- Taxon
- wheatTriticum aestivume5
- Treatment
- fallow fields with manure and melilote5
- Outcome
- supply of nitrate nitrogene5
- Direction
- beste5
- Value
- 17.1-15.6 mg/kge5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The best supply of nitrate nitrogen before sowing wheat was noted in fallow fields with manure and melilot (17.1-15.6 mg/kg)”
Claim · model-written summary
Methods of placing organic fertilizers did not affect soil nitrate content.
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- Methods of placing organic fertilizerse6
- Outcome
- nitrate contente6
- Direction
- did not affecte6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bare fallow was more effective for the accumulation of productive moisture than green-manured one both in autumn and in spring before sowing spring wheat”
e6“Methods of placing organic fertilizers did not affect the nitrate content in the soil”
Claim · model-written summary
The highest spring wheat yield was in the bare-fallowed fertilized field, 0.2-0.5 t/ha above all bare or green-manured fallow.
- Taxon
- spring wheatTriticum aestivume7
- Treatment
- bare-fallowed fertilizede7
- Outcome
- yield of spring wheate7
- Direction
- highere7
- Value
- 0.2–0.5 t/hae7
- Comparator
- all types of bare or green-manured fallowe7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The highest yield of spring wheat was obtained in the bare-fallowed fertilized fi eld, which was by 0.2–0.5 t/ha higher than with all types of bare or green-manured fallow”
e1“The yield of spring wheat was affected by preceding crops and methods of placing fertilizers”
Claim · model-written summary
Deep (18-20 cm) manure placement increased spring wheat yield by 0.2 t/ha (10.5%).
- Taxon
- spring wheatTriticum aestivume0
- Treatment
- Deep (18–20 cm) placement of manuree0
- Outcome
- yield of spring wheate0
- Direction
- increasede0
- Value
- 0.2 t/ha (10.5%)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deep (18–20 cm) placement of manure increased the yield of spring wheat by 0.2 t/ha (10.5%)”
Claim · model-written summary
Surface placement of green-manured crops increased spring wheat yield by 0.1-0.3 t/ha (7.1-20%) on average.
- Taxon
- spring wheatTriticum aestivume1
- Treatment
- Placement of green-manured crops on the surfacee0
- Outcome
- yield of spring wheate1
- Direction
- increasee0
- Value
- 0.1–0.3 t/ ha (7.1–20%)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Placement of green-manured crops on the surface made it possible, on average during the experiment, to increase this indicator by 0.1–0.3 t/ ha (7.1–20%)”
e1“The yield of spring wheat was affected by preceding crops and methods of placing fertilizers”
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