Abstract
The need to restore the dairy cattle population and the feed base in the North-West region of the Russian Federation requires new sources of feed with high yield and nutritional values. The purpose of the research is to study the possibility of sugar sorghum introduction into the region for forage use. The research was conducted in 2017-2020 in the conditions of the Novgorod region. On plots with an area of 10 m 2 in the third decade of May sugar sorghum was sown: a hybrid of the first generation Silosnoe 88, the Galia variety, the Laretz line. The predecessors were potato (2017, 2018, 2020) and vetch and oat mix (2019). The ability of sugar sorghum to stop developing and hibernate in unfavorable weather conditions, resuming vegetation when the weather improves, has been established. Intensive plant growth was observed at the end of July-August with the average daily growth of 1.9-5.0 cm. By the end of August, the plant height reached 245-280 cm, the yield of green mass was 110 t/ha (hybrid Silosnoe 88), 139.2 t/ha (variety Galia), 136 t/ha (Laretz line). In the extreme conditions of 2017, the yield of sorghum green mass was 21 t/ha. The yield of dry matter (DM) from 1 ha reached 6.8-13.4 t/ha. The protein content in the DM was 8.4-11.5 %, the yield of feed units was 0.76-0.82 kg/kg, the output of exchange energy was 9.7-10.1 MJ/kg. Sugar sorghum has an ability to grow back after mowing; in the conditions of the Novgorod region, the yield of green mass from two mowing (end of July, August-September) was lower (23.3-46.7 t/ha) than from the one at the end of August-September (44.3-139.2 t/ha). The Laretz line vegetation phases began 5-27 days later than those of the Silosnoe 88 hybrid and Galiya variety. The growing season of sugar sorghum ended in the phase of “heading of panicles - flowering”. Thus, a high plasticity and adaptability of sorghum varieties to unfavorable climatic conditions of the zone and their prospects for use in forage production have been established.
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Claims 15
Claim · model-written summary
Sugar sorghum paused development in unfavorable weather and resumed vegetation when weather improved.
Verbatim
e0“The ability of sugar sorghum to stop developing and hibernate in unfavorable weather conditions, resuming vegetation when the weather improves, has been established.”
Claim · model-written summary
Average daily growth at the end of July-August was 1.9-5.0 cm.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intensive plant growth was observed at the end of July-August with the average daily growth of 1.9-5.0 cm.”
t0“sorghum cultivation”
Claim · model-written summary
Plant height reached 245-280 cm by the end of August.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By the end of August, the plant height reached 245-280 cm”
t0“sorghum cultivation”
Claim · model-written summary
Silosnoe 88 green mass yield was 110 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of green mass was 110 t/ha (hybrid Silosnoe 88)”
t0“sorghum cultivation”
Claim · model-written summary
Galia green mass yield was 139.2 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“139.2 t/ha (variety Galia)”
e1“the yield of green mass was 110 t/ha”
t0“sorghum cultivation”
Claim · model-written summary
Laretz green mass yield was 136 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“136 t/ha (Laretz line)”
e1“the yield of green mass was 110 t/ha”
t0“sorghum cultivation”
Claim · model-written summary
Extreme conditions in 2017 yielded 21 t/ha of sorghum green mass.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the extreme conditions of 2017, the yield of sorghum green mass was 21 t/ha.”
Claim · model-written summary
Dry matter yield reached 6.8-13.4 t/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of dry matter (DM) from 1 ha reached 6.8-13.4 t/ha.”
t0“sorghum cultivation”
Claim · model-written summary
Dry matter protein content was 8.4-11.5 %.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protein content in the DM was 8.4-11.5 %”
t0“sorghum cultivation”
Claim · model-written summary
Feed unit yield was 0.76-0.82 kg/kg.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of feed units was 0.76-0.82 kg/kg”
t0“sorghum cultivation”
Claim · model-written summary
Exchange energy output was 9.7-10.1 MJ/kg.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the output of exchange energy was 9.7-10.1 MJ/kg”
t0“sorghum cultivation”
Claim · model-written summary
Sorghum grew back after mowing.
Verbatim
e0“Sugar sorghum has an ability to grow back after mowing”
Claim · model-written summary
Two mowings yielded less green mass than one late mowing.
- Treatment
- two mowinge0
- Outcome
- yield of green masse0
- Direction
- lowere0
- Value
- 23.3-46.7 t/hae0
- Qualifier
- 44.3-139.2 t/hae0
- Comparator
- the one at the end of August-Septembere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of green mass from two mowing (end of July, August-September) was lower (23.3-46.7 t/ha) than from the one at the end of August-September (44.3-139.2 t/ha)”
t0“sorghum cultivation”
Claim · model-written summary
Laretz vegetation phases began 5-27 days later than Silosnoe 88 and Galiya.
- Material
- Laretz linee0
- Outcome
- vegetation phasese0
- Direction
- latere0
- Value
- 5-27 dayse0
- Comparator
- Silosnoe 88 hybrid and Galiya varietye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Laretz line vegetation phases began 5-27 days later than those of the Silosnoe 88 hybrid and Galiya variety.”
t0“sorghum cultivation”
Claim · model-written summary
The growing season ended at heading of panicles to flowering.
Verbatim
e0“The growing season of sugar sorghum ended in the phase of “heading of panicles - flowering”.”
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