Weeds in field crop rotations
The purpose of the research is to trace the dynamics of weed infestation and determine the species composition of weeds in field crop rotations, to show the impact of crop rotation, agricultural background and time on weed infestation of crops. Studies were carried out in 1998 - 2017 in the conditio...
| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Federal Agricultural Research Center of the North-East named N.V. Rudnitsky
2018-10-01
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| Series: | Аграрная наука Евро-Северо-Востока |
| Subjects: | |
| Online Access: | https://www.agronauka-sv.ru/jour/article/view/261 |
| _version_ | 1797290271309824000 |
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| author | S. A. Zamyatin A. Y. Efimova S. A. Maksutkin |
| author_facet | S. A. Zamyatin A. Y. Efimova S. A. Maksutkin |
| author_sort | S. A. Zamyatin |
| collection | DOAJ |
| description | The purpose of the research is to trace the dynamics of weed infestation and determine the species composition of weeds in field crop rotations, to show the impact of crop rotation, agricultural background and time on weed infestation of crops. Studies were carried out in 1998 - 2017 in the conditions of the Republic of Mari El on sod-podzolic medium-loamy soil with a high content of mobile forms of phosphorus and exchangeable potassium. The biomorphological spectrum of weed species showed that the share of juvenile weeds accounted for 26 species, perennial-9 species. During the research in the studied agrocenosis there was an increase in weed abundance: in the first rotation - 60.78 pcs/m2, in the second - 67.48 pcs/m2, in the third rotation - 75.95 pcs/m2. During the research there was an increase in the number of such annual weeds as Polygonum aviculare, Erodium cicutarium (L.), Veronica polita, Capsella bursa-pastoris, Viola arvensis, Fumaria officinalis and Stellaria media. The number of Chenopodium album and Echinochloa crus-galli increased significantly, especially in the last six years of research. Every year the infestation with Galeopsis tetrahit, Centaurea cyanus, Apera spica-venti and Amaranthus retroflexus was decreasing . The greatest annual weed infestation (71.86 pcs/m2) was in grain rotation, and the least - in grain-fodder fallow rotation (54.83 pcs/m2). The maximum number of perennial weeds was found in the I crop rotation - 14.08 pcs/m2. The variant without fertilizers showed the least infestation with annual weeds- 59.95 pcs/m2. Against the background of N60P60K60 their number increased by 8.98 pcs/m2 (LSD05 - 5.50). |
| first_indexed | 2024-03-07T19:20:02Z |
| format | Article |
| id | doaj.art-697e04570cb04f7eae8686d8c8b3519b |
| institution | Directory Open Access Journal |
| issn | 2072-9081 2500-1396 |
| language | Russian |
| last_indexed | 2024-03-07T19:20:02Z |
| publishDate | 2018-10-01 |
| publisher | Federal Agricultural Research Center of the North-East named N.V. Rudnitsky |
| record_format | Article |
| series | Аграрная наука Евро-Северо-Востока |
| spelling | doaj.art-697e04570cb04f7eae8686d8c8b3519b2024-02-29T11:31:11ZrusFederal Agricultural Research Center of the North-East named N.V. RudnitskyАграрная наука Евро-Северо-Востока2072-90812500-13962018-10-016659810310.30766/2072-9081.2018.66.5.98-103260Weeds in field crop rotationsS. A. Zamyatin0A. Y. Efimova1S. A. Maksutkin2Mari Agricultural Research Institute - branch of Federal Agrarian Research Center of the North-East named N.V.RudnitskyMari Agricultural Research Institute - branch of Federal Agrarian Research Center of the North-East named N.V.RudnitskyMari Agricultural Research Institute - branch of Federal Agrarian Research Center of the North-East named N.V.RudnitskyThe purpose of the research is to trace the dynamics of weed infestation and determine the species composition of weeds in field crop rotations, to show the impact of crop rotation, agricultural background and time on weed infestation of crops. Studies were carried out in 1998 - 2017 in the conditions of the Republic of Mari El on sod-podzolic medium-loamy soil with a high content of mobile forms of phosphorus and exchangeable potassium. The biomorphological spectrum of weed species showed that the share of juvenile weeds accounted for 26 species, perennial-9 species. During the research in the studied agrocenosis there was an increase in weed abundance: in the first rotation - 60.78 pcs/m2, in the second - 67.48 pcs/m2, in the third rotation - 75.95 pcs/m2. During the research there was an increase in the number of such annual weeds as Polygonum aviculare, Erodium cicutarium (L.), Veronica polita, Capsella bursa-pastoris, Viola arvensis, Fumaria officinalis and Stellaria media. The number of Chenopodium album and Echinochloa crus-galli increased significantly, especially in the last six years of research. Every year the infestation with Galeopsis tetrahit, Centaurea cyanus, Apera spica-venti and Amaranthus retroflexus was decreasing . The greatest annual weed infestation (71.86 pcs/m2) was in grain rotation, and the least - in grain-fodder fallow rotation (54.83 pcs/m2). The maximum number of perennial weeds was found in the I crop rotation - 14.08 pcs/m2. The variant without fertilizers showed the least infestation with annual weeds- 59.95 pcs/m2. Against the background of N60P60K60 their number increased by 8.98 pcs/m2 (LSD05 - 5.50).https://www.agronauka-sv.ru/jour/article/view/261species composition of weedsbiological groupsjuvenile and perennial weedsdynamics of infestation |
| spellingShingle | S. A. Zamyatin A. Y. Efimova S. A. Maksutkin Weeds in field crop rotations Аграрная наука Евро-Северо-Востока species composition of weeds biological groups juvenile and perennial weeds dynamics of infestation |
| title | Weeds in field crop rotations |
| title_full | Weeds in field crop rotations |
| title_fullStr | Weeds in field crop rotations |
| title_full_unstemmed | Weeds in field crop rotations |
| title_short | Weeds in field crop rotations |
| title_sort | weeds in field crop rotations |
| topic | species composition of weeds biological groups juvenile and perennial weeds dynamics of infestation |
| url | https://www.agronauka-sv.ru/jour/article/view/261 |
| work_keys_str_mv | AT sazamyatin weedsinfieldcroprotations AT ayefimova weedsinfieldcroprotations AT samaksutkin weedsinfieldcroprotations |