Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978
Since herbicides are not widely used in cowpea and soybean at the present time, cultural and manual methods are important means of weed control in the tropics. Field experiments were conducted at Ibadan (in western Nigeria) to evaluate the effect of plant density, spatial arrangement and plant type...
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
1980
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| Online Access: | https://hdl.handle.net/10568/98106 |
| _version_ | 1855514075596849152 |
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| author | Nangju, D. |
| author_browse | Nangju, D. |
| author_facet | Nangju, D. |
| author_sort | Nangju, D. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Since herbicides are not widely used in cowpea and soybean at the present time, cultural and manual methods are important means of weed control in the tropics. Field experiments were conducted at Ibadan (in western Nigeria) to evaluate the effect of plant density, spatial arrangement and plant type on weed control in cowpea (Vigna unguiculata) and soybean. On the average, weeds reduced seed yield of cowpea by about 46% and of soybean by about 34%. In addition, weeds present during pod ripening of soybean significantly reduced the percentage of smooth, clean seed and germination of soybean when maturation occurred during wet weather. Increasing the plant density or reducing row spacing at a given density reduced weed weight and yield loss in soybean. Some cowpea and soybean cultivars were more competitive against weeds than others. Plant characters associated with the competitive ability against weeds were (1) plant height, (2) leaf shape and size and (3) leaf area index. Weed weight was negatively correlated with leaf area index. |
| format | Conference Paper |
| id | CGSpace98106 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1980 |
| publishDateRange | 1980 |
| publishDateSort | 1980 |
| record_format | dspace |
| spelling | CGSpace981062023-06-08T13:35:41Z Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 Nangju, D. cowpeas soybeans weed control pests cultivars Since herbicides are not widely used in cowpea and soybean at the present time, cultural and manual methods are important means of weed control in the tropics. Field experiments were conducted at Ibadan (in western Nigeria) to evaluate the effect of plant density, spatial arrangement and plant type on weed control in cowpea (Vigna unguiculata) and soybean. On the average, weeds reduced seed yield of cowpea by about 46% and of soybean by about 34%. In addition, weeds present during pod ripening of soybean significantly reduced the percentage of smooth, clean seed and germination of soybean when maturation occurred during wet weather. Increasing the plant density or reducing row spacing at a given density reduced weed weight and yield loss in soybean. Some cowpea and soybean cultivars were more competitive against weeds than others. Plant characters associated with the competitive ability against weeds were (1) plant height, (2) leaf shape and size and (3) leaf area index. Weed weight was negatively correlated with leaf area index. 1980 2018-11-14T06:52:52Z 2018-11-14T06:52:52Z Conference Paper https://hdl.handle.net/10568/98106 en Open Access application/pdf Nangju, D. (1980). Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean. In I. Okezie (Eds.), Weeds and their control in the humid and subhumid tropics: proceedings of a conference held at the IITA, Ibadan, Nigeria, July 3-7, 1978. Ibadan, Nigeria: IITA, (p. 288-299). |
| spellingShingle | cowpeas soybeans weed control pests cultivars Nangju, D. Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title | Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title_full | Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title_fullStr | Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title_full_unstemmed | Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title_short | Effect of plant density, spatial arrangement and plant type on weed control in cowpea and soybean: Conference Conference Proceedings of a conference held at the IITA, Ibadan, Nigeria, July 37, 1978 |
| title_sort | effect of plant density spatial arrangement and plant type on weed control in cowpea and soybean conference conference proceedings of a conference held at the iita ibadan nigeria july 37 1978 |
| topic | cowpeas soybeans weed control pests cultivars |
| url | https://hdl.handle.net/10568/98106 |
| work_keys_str_mv | AT nangjud effectofplantdensityspatialarrangementandplanttypeonweedcontrolincowpeaandsoybeanconferenceconferenceproceedingsofaconferenceheldattheiitaibadannigeriajuly371978 |