Critical Period Of Weed Interference In Early And / Medium Maturing Soybean (Glycine Max (L) MERR).

Michael Okpara University | 65 pages (12416 words) | Projects

ABSTRACT

 The critical period of weed interference in two maturity groups of soybean ( early and medium) was examined in this study. Four varieties, two early and two medium maturing varieties were used. Field trial was laid out in the year 2010 using a split-plot in randomized complete block design. Soybean· plots were initially kept weed-free for 0,12,24, 36 and 48 days after crop emergence (DAE) · 8 after which they were left weedy for the rest of the season and weed-infested for 0,12,24,36 and 48 DAE then kept weed-free for the rest of the season. Soybean yield increased with increasing period of weed free condition while it was reduced by increasing duration of weed infested condition. There was general reduction in seed yield in plots that were kept weedy throughout the period when compared to plots that were kept weed free throughout the period. The result shows that soybean fields must be kept weed-free between 8-36 DAE in order to prevent > 10% accepTable seed yield loss (ASYL). The reduction in seed yield as a result of weed interference was associated with a simultaneous reduction in plant dry matter content, number of pods/plant, number of branches, seed size I 00-seed weight, number of leaves, plant height, and other growth and yield associated traits. 

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APA

MICHAEL, U (2023). Critical Period Of Weed Interference In Early And / Medium Maturing Soybean (Glycine Max (L) MERR).. Repository.mouau.edu.ng: Retrieved May 24, 2024, from https://repository.mouau.edu.ng/work/view/critical-period-of-weed-interference-in-early-and-medium-maturing-soybean-glycine-max-l-merr-7-2

MLA 8th

UNIVERSITY, MICHAEL. "Critical Period Of Weed Interference In Early And / Medium Maturing Soybean (Glycine Max (L) MERR)." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 07 Jul. 2023, https://repository.mouau.edu.ng/work/view/critical-period-of-weed-interference-in-early-and-medium-maturing-soybean-glycine-max-l-merr-7-2. Accessed 24 May. 2024.

MLA7

UNIVERSITY, MICHAEL. "Critical Period Of Weed Interference In Early And / Medium Maturing Soybean (Glycine Max (L) MERR).". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 07 Jul. 2023. Web. 24 May. 2024. < https://repository.mouau.edu.ng/work/view/critical-period-of-weed-interference-in-early-and-medium-maturing-soybean-glycine-max-l-merr-7-2 >.

Chicago

UNIVERSITY, MICHAEL. "Critical Period Of Weed Interference In Early And / Medium Maturing Soybean (Glycine Max (L) MERR)." Repository.mouau.edu.ng (2023). Accessed 24 May. 2024. https://repository.mouau.edu.ng/work/view/critical-period-of-weed-interference-in-early-and-medium-maturing-soybean-glycine-max-l-merr-7-2

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