Abstract
Goal. To study the influence of fertilizer system and crop rotation structure of corn and other commercially attractive crops with the different share of saturation on their productivity and economic feasibility in reclaimed lands of Polissia zone. Methods. Long-term field — stationary experiment, laboratory — to determine the quality of the soil according to generally accepted methods, processing of experimental data was performed using the computer program Microsoft Office Excel. Results. It was noted that during the research of 2016–2020, on the sod-podzolic soil there was a shortage of moisture during the growing season of crops. It was found that the total productivity of crop rotations depended on their saturation with corn, the grain yield of which, on average for 5 years, at different levels of organomineral nutrition, was 6.04–7.67 t/ha. The highest yield per 1 ha of crop rotation area was obtained in 3-field crop rotation (soybean-corn-corn) with 66.6% of corn: grain units — from 3.14 tons in control to 6.05 tons — at high rates of mineral fertilizers (N62P86K90 + by-products), feed units — from 3.41 to 6.59 tons, respectively. Productivity of 3-field (peas-winter triticale-corn) and 4-field (lupine-winter rape-winter rye-corn) crop rotations with a share of corn of 33.3 and 25.0%, ranged from 2.43 to 4.52 tons of grain, or from 2.68 to 5.44 tons of feed units, respectively. Crop rotation without corn (soybean-winter wheat-sunflower-buckwheat) with a share of winter wheat and sunflower of 25%, had lower overall productivity (15–93%). The largest harvest was obtained on the background of N63P85K90 + by-products — 3.20 tons of grain or 3.56 tons of feed units. Conclusions. Application of litter manure in the amount of 10 tons per 1 ha of crop rotation area against the background of the recommended rate of mineral fertilizers N42P57K60 provides profitability of crop rotations at the level of 25.4–30.7%. Replacement of manure by by-products of all crops in combination with the recommended norms of mineral fertilizers does not significantly reduce the productivity of crop rotations and provides profitability of 27.9–36.5%.
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Claims 13
Claim · model-written summary
Growing-season moisture was deficient during 2016–2020.
Verbatim
e0“during the research of 2016–2020, on the sod-podzolic soil there was a shortage of moisture during the growing season of crops”
Claim · model-written summary
Crop rotation productivity depended on corn saturation.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- saturation with corne0
- Outcome
- total productivity of crop rotationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total productivity of crop rotations depended on their saturation with corn”
Claim · model-written summary
Corn grain yield across nutrition levels averaged 6.04–7.67 t/ha over five years.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- grain yielde0
- Value
- 6.04–7.67 t/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn, the grain yield of which, on average for 5 years, at different levels of organomineral nutrition, was 6.04–7.67 t/ha”
Claim · model-written summary
A three-field soybean-corn-corn rotation gave the highest grain-unit yield, 3.14 tons in control and 6.05 tons with high mineral fertilizer.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- high rates of mineral fertilizers (N62P86K90 + by-products)e0
- Outcome
- grain unitse0
- Direction
- higheste0
- Value
- 6.05 tonse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield per 1 ha of crop rotation area was obtained in 3-field crop rotation (soybean-corn-corn) with 66.6% of corn: grain units — from 3.14 tons in control to 6.05 tons — at high rates of mineral fertilizers (N62P86K90 + by-products)”
Claim · model-written summary
The same rotation produced 3.41 to 6.59 tons of feed units.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- feed unitse0
- Value
- 6.59 tonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“feed units — from 3.41 to 6.59 tons, respectively”
e1“3-field crop rotation (soybean-corn-corn)”
Claim · model-written summary
Lower-corn rotations produced 2.43 to 4.52 tons of grain.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- graine0
- Value
- 2.43 to 4.52 tonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Productivity of 3-field (peas-winter triticale-corn) and 4-field (lupine-winter rape-winter rye-corn) crop rotations with a share of corn of 33.3 and 25.0%, ranged from 2.43 to 4.52 tons of grain”
Claim · model-written summary
Lower-corn rotations produced 2.68 to 5.44 tons of feed units.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- feed unitse0
- Value
- 5.44 tonse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“from 2.68 to 5.44 tons of feed units, respectively”
e1“crop rotations with a share of corn of 33.3 and 25.0%”
Claim · model-written summary
Rotation without corn had 15–93% lower overall productivity.
- Taxon
- soybean
Glycine maxe0 - Treatment
- Crop rotation without corne0
- Outcome
- overall productivitye0
- Direction
- lowere0
- Value
- 15–93%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Crop rotation without corn (soybean-winter wheat-sunflower-buckwheat) with a share of winter wheat and sunflower of 25%, had lower overall productivity (15–93%)”
Claim · model-written summary
With N63P85K90 and by-products, the largest harvest was 3.20 tons of grain.
Not reportedTaxon
Verbatim
e0“The largest harvest was obtained on the background of N63P85K90 + by-products — 3.20 tons of grain or 3.56 tons of feed units”
Claim · model-written summary
With N63P85K90 and by-products, the largest feed harvest was 3.56 tons.
Not reportedTaxon
Verbatim
e0“N63P85K90 + by-products — 3.20 tons of grain or 3.56 tons of feed units”
Claim · model-written summary
Manure plus recommended fertilizer gave 25.4–30.7% rotation profitability.
Not reportedTaxon
Verbatim
e0“Application of litter manure in the amount of 10 tons per 1 ha of crop rotation area against the background of the recommended rate of mineral fertilizers N42P57K60 provides profitability of crop rotations at the level of 25.4–30.7%”
Claim · model-written summary
Replacing manure with by-products did not significantly reduce rotation productivity.
Verbatim
e0“Replacement of manure by by-products of all crops in combination with the recommended norms of mineral fertilizers does not significantly reduce the productivity of crop rotations”
Claim · model-written summary
Replacing manure with by-products gave 27.9–36.5% profitability.
Verbatim
e0“Replacement of manure by by-products of all crops in combination with the recommended norms of mineral fertilizers does not significantly reduce the productivity of crop rotations and provides profitability of 27.9–36.5%”
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