Study of the effect of different types of previous crops on the dynamics of the weed flora under no-till condition in Algeria [electronic resource].
Language: English Summary language: Arabic Description: p. 379- 390Other title:- دراسة تأثير الأنواع المختلفة من المحاصيل السابقة على ديناميكيات الأعشاب الضارة تحت نظام البذر المباشر في الجزائر [Added title page title]
- Egyptian journal of agronomy, 2021 v. 43 (3) [electronic resource].
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Articles
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Main | ART EJA V43 No3 7 (Browse shelf(Opens below)) | Available |
Includes references.
This study aims to evaluate the impact of crop rotations on weed dynamics under no-till conditions.
Four crop rotations were tested:Wheat/Lentil/Wheat (W/L/W), Lentil/Wheat/Wheat (L/W/W),
Triticale/forage Pea/Wheat (T/P/W) and forage Pea/Triticale/Wheat (P/T/W), during the 2016/17,
2017/18 and 2018/19 crop years. The experiment was conducted on the experimental site belonging
to the ITGC-FEA of Setif (Algeria). The results indicate that the weed flora is composed of 13
species belonging to 09 families. Dicotyledons are mostly observed during the three campaigns,
with proportions of 77.77%, 66.66%, 84.62%, respectively for the campaigns 2016/17, 2017/18 and 2018/19.
Annual grasses (monocotyledons) consisted of Avena sterilis and Bromus sterilis. The Shannon and Simpson
indices show controversial values depending on the treatments applied. The W/L/W crop rotation
was distinguished by both specific diversity and low dominance, conversely the P/T/W treatment,
shows high dominance accompanied by low diversity. The linear model relating to the evolution of
monocots as a function of precipitation shows that they are negatively and significantly correlated
with precipitation in January. The latter is as follows: Y= -0.251x + 34.461 with (R²= 0.998).
Keywords: Crop rotation, No-till, Semi-arid, Shannon Entropy, Weed flora
Summary in Arabic
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