Herbicide residues in soil – are they an issue?
2019
Преузимање 🢃
Аутори
Gajić-Umiljendić, JelenaSarić-Krsmanović, Marija
Šantrić, Ljiljana
Radivojević, Ljiljana
Остала ауторства
Tanović, BrankicaDolzhenko, Victor
Nicot, Philippe
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The move to conservation tillage and herbicide-tolerant crop cultivars means that crop production
is relying on herbicides for weed control more than ever before. Some herbicides (mostly
those that are applied directly to soil prior to planting crops) can remain active in soil for weeks,
months or years. This can be an advantage as it ensures good long-term weed control. However, if a
herbicide stays in soil longer than intended it may damage sensitive crop or pasture species sown in
subsequent years. However, despite the plant-back guidelines on herbicide product labels, various
site-specific factors, such as low rainfall, constrained soil microbial activity or inadequate pH, may
cause herbicides to persist in soil beyond usual expectations. This is especially the case for repeated
applications over multiple cropping seasons. Residual herbicides rely on moisture and microbial
activity to break down. So one of the consequences of a growing season being drier than average is
t...hat herbicides applied in one season could still have significant residues in the soil, and affect crops
planted the following year. A real problem in crop production is the difficulty in identifying herbicide
residues before they cause a problem. Because the potential for each herbicide to damage crops
varies depending on soil, agroclimate and crop, comprehensive phytotoxicity thresholds (given as
soil residue concentrations) for assessing plant-back risk are not readily available. For these reasons,
degradation of each herbicide needs to be considered separately and it is also necessary to understand
the soil type and climate when trying to interpret recropping periods.
Here we focus on the potential for clomazone and imazamox residues to cause damage to tomato,
pepper and cucumber seedlings. Bioassay was conducted in loamy and sandy soils of 20, 50
and 70% field moisture capacity. Fresh and dry weight of shoots and pigment contents (chlorophyll
a and b and carotenoids) were measured as important parameters of plant sensitivity to clomazone,
while fresh weight of shoots, fresh weight and length of roots and content of water soluble proteins
were measured to examine plant sensitivity to imazamox.
Data showed that pepper was the least sensitive plant to soil-incorporated clomazone, cucumber
was slightly more sensitive, while tomato falls in a category of plants with highly sensitive to the
herbicide. The measured parameters were more distinctly inhibited in sandy than in loamy soil. Data
for the inhibition of vegetative parameters showed that all three plant species were significantly sensitive
to imazamox in soil. Pepper and tomato demonstrated fairly regular sensitivity, while cucumber
may be classified as a highly sensitive plant. The results showed that the root parameters were
more reliable indicators of plant sensitivity to imazamox in soil. Different imazamox concentrations
caused changes in contents of water soluble proteins in all three plant species. The response data
revealed no clear dependence of protein contents on rising herbicide concentrations.
Кључне речи:
herbicide residues / soilИзвор:
VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts, 2019, 121-121Издавач:
- Belgrade : Plant Protection Society of Serbia
Пројекти:
- Проучавање биљних патогена, артропода, корова и пестицида у циљу развоја метода биорационалне заштите биља и производње безбедне хране (RS-MESTD-Technological Development (TD or TR)-31043)
- Развој интегрисаних система управљања штетним организмима у биљној производњи са циљем превазилажења резистентности и унапређења квалитета и безбедности хране (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-46008)
Напомена:
- November 25-29, 2019, Zlatibor, Serbia
Институција
Institut za pesticide i zaštitu životne sredineTY - CONF AU - Gajić-Umiljendić, Jelena AU - Sarić-Krsmanović, Marija AU - Šantrić, Ljiljana AU - Radivojević, Ljiljana PY - 2019 UR - https://ripest.pesting.org.rs/handle/123456789/692 AB - The move to conservation tillage and herbicide-tolerant crop cultivars means that crop production is relying on herbicides for weed control more than ever before. Some herbicides (mostly those that are applied directly to soil prior to planting crops) can remain active in soil for weeks, months or years. This can be an advantage as it ensures good long-term weed control. However, if a herbicide stays in soil longer than intended it may damage sensitive crop or pasture species sown in subsequent years. However, despite the plant-back guidelines on herbicide product labels, various site-specific factors, such as low rainfall, constrained soil microbial activity or inadequate pH, may cause herbicides to persist in soil beyond usual expectations. This is especially the case for repeated applications over multiple cropping seasons. Residual herbicides rely on moisture and microbial activity to break down. So one of the consequences of a growing season being drier than average is that herbicides applied in one season could still have significant residues in the soil, and affect crops planted the following year. A real problem in crop production is the difficulty in identifying herbicide residues before they cause a problem. Because the potential for each herbicide to damage crops varies depending on soil, agroclimate and crop, comprehensive phytotoxicity thresholds (given as soil residue concentrations) for assessing plant-back risk are not readily available. For these reasons, degradation of each herbicide needs to be considered separately and it is also necessary to understand the soil type and climate when trying to interpret recropping periods. Here we focus on the potential for clomazone and imazamox residues to cause damage to tomato, pepper and cucumber seedlings. Bioassay was conducted in loamy and sandy soils of 20, 50 and 70% field moisture capacity. Fresh and dry weight of shoots and pigment contents (chlorophyll a and b and carotenoids) were measured as important parameters of plant sensitivity to clomazone, while fresh weight of shoots, fresh weight and length of roots and content of water soluble proteins were measured to examine plant sensitivity to imazamox. Data showed that pepper was the least sensitive plant to soil-incorporated clomazone, cucumber was slightly more sensitive, while tomato falls in a category of plants with highly sensitive to the herbicide. The measured parameters were more distinctly inhibited in sandy than in loamy soil. Data for the inhibition of vegetative parameters showed that all three plant species were significantly sensitive to imazamox in soil. Pepper and tomato demonstrated fairly regular sensitivity, while cucumber may be classified as a highly sensitive plant. The results showed that the root parameters were more reliable indicators of plant sensitivity to imazamox in soil. Different imazamox concentrations caused changes in contents of water soluble proteins in all three plant species. The response data revealed no clear dependence of protein contents on rising herbicide concentrations. PB - Belgrade : Plant Protection Society of Serbia C3 - VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts T1 - Herbicide residues in soil – are they an issue? EP - 121 SP - 121 ER -
@conference{ author = "Gajić-Umiljendić, Jelena and Sarić-Krsmanović, Marija and Šantrić, Ljiljana and Radivojević, Ljiljana", year = "2019", abstract = "The move to conservation tillage and herbicide-tolerant crop cultivars means that crop production is relying on herbicides for weed control more than ever before. Some herbicides (mostly those that are applied directly to soil prior to planting crops) can remain active in soil for weeks, months or years. This can be an advantage as it ensures good long-term weed control. However, if a herbicide stays in soil longer than intended it may damage sensitive crop or pasture species sown in subsequent years. However, despite the plant-back guidelines on herbicide product labels, various site-specific factors, such as low rainfall, constrained soil microbial activity or inadequate pH, may cause herbicides to persist in soil beyond usual expectations. This is especially the case for repeated applications over multiple cropping seasons. Residual herbicides rely on moisture and microbial activity to break down. So one of the consequences of a growing season being drier than average is that herbicides applied in one season could still have significant residues in the soil, and affect crops planted the following year. A real problem in crop production is the difficulty in identifying herbicide residues before they cause a problem. Because the potential for each herbicide to damage crops varies depending on soil, agroclimate and crop, comprehensive phytotoxicity thresholds (given as soil residue concentrations) for assessing plant-back risk are not readily available. For these reasons, degradation of each herbicide needs to be considered separately and it is also necessary to understand the soil type and climate when trying to interpret recropping periods. Here we focus on the potential for clomazone and imazamox residues to cause damage to tomato, pepper and cucumber seedlings. Bioassay was conducted in loamy and sandy soils of 20, 50 and 70% field moisture capacity. Fresh and dry weight of shoots and pigment contents (chlorophyll a and b and carotenoids) were measured as important parameters of plant sensitivity to clomazone, while fresh weight of shoots, fresh weight and length of roots and content of water soluble proteins were measured to examine plant sensitivity to imazamox. Data showed that pepper was the least sensitive plant to soil-incorporated clomazone, cucumber was slightly more sensitive, while tomato falls in a category of plants with highly sensitive to the herbicide. The measured parameters were more distinctly inhibited in sandy than in loamy soil. Data for the inhibition of vegetative parameters showed that all three plant species were significantly sensitive to imazamox in soil. Pepper and tomato demonstrated fairly regular sensitivity, while cucumber may be classified as a highly sensitive plant. The results showed that the root parameters were more reliable indicators of plant sensitivity to imazamox in soil. Different imazamox concentrations caused changes in contents of water soluble proteins in all three plant species. The response data revealed no clear dependence of protein contents on rising herbicide concentrations.", publisher = "Belgrade : Plant Protection Society of Serbia", journal = "VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts", title = "Herbicide residues in soil – are they an issue?", pages = "121-121" }
Gajić-Umiljendić, J., Sarić-Krsmanović, M., Šantrić, L.,& Radivojević, L.. (2019). Herbicide residues in soil – are they an issue?. in VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts Belgrade : Plant Protection Society of Serbia., 121-121.
Gajić-Umiljendić J, Sarić-Krsmanović M, Šantrić L, Radivojević L. Herbicide residues in soil – are they an issue?. in VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts. 2019;:121-121..
Gajić-Umiljendić, Jelena, Sarić-Krsmanović, Marija, Šantrić, Ljiljana, Radivojević, Ljiljana, "Herbicide residues in soil – are they an issue?" in VIII Congress on Plant Protection: Integrated Plant Protection for Sustainable Crop Production and Forestry - Book of Аbstracts (2019):121-121.