Cultural Practices and Mechanical Weed Control for the Management of a Low-Diversity Weed Community in Spinach

被引:11
作者
Gazoulis, Ioannis [1 ]
Kanatas, Panagiotis [2 ]
Antonopoulos, Nikolaos [1 ]
机构
[1] Agr Univ Athens, Lab Agron, Athens 11855, Greece
[2] Univ Patras, Dept Crop Sci, Mesolongion 30200, Greece
来源
DIVERSITY-BASEL | 2021年 / 13卷 / 12期
关键词
Setaria viridis (L; ) P; Beauv; Chenopodium album L; banded fertilization; intra-row spacing; cage weeder; commercial biomass; nitrogen use efficiency; OLERACEA L; PHOSPHORUS FERTILIZATION; SPECIES-DIVERSITY; CROP COMPETITION; GROWTH; FRESH; YIELD; STRATEGIES; INVASION;
D O I
10.3390/d13120616
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Low-diversity weed communities are dominated by few species that are highly competitive to crops. The management of such weed communities should rely upon sustainable cultural and non-chemical practices, especially in crops such as spinach (Spinacia oleracea L.), where very few herbicides are available. A two-year field trial (2020 and 2021) was conducted to evaluate different fertilization practices (broadcast and banded), intra-row spacings (15 cm, 11 cm, 7 cm), and mechanical weed control treatments (untreated, one treatment, two treatments) for the management of a low-diversity weed community in spinach. Weed competition severely affected spinach commercial biomass (R-2 = 0.845). Compared to broadcast fertilization, banded fertilization reduced weed biomass and improved spinach yield and nitrogen use efficiency. Narrow intra-row spacing (7-cm) reduced weed biomass by 28 and 45% compared to intra-row spacings of 11-cm and 15-cm, respectively. Two mechanical weed control treatments resulted in 49% lower weed biomass compared to a single treatment. Commercial biomass increased with decreasing intra-row spacing (R-2 = 0.881) and increasing the number of mechanical treatments (R-2 = 0.911). More cultural and non-chemical practices should be evaluated for weed management in spinach, especially at sites infested with low-diversity weed communities.
引用
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页数:16
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