Abstract
Goal. Carry out a comparative evaluation of the effectiveness of different schemes of application of modern herbicides in maize crops. Methods. Field, phenological, statistical. Conducted spraying of corn crops to seedlings (ВВСН 00) with herbicides Adengo 465 SC, hp (thiencarbazone-methyl, 90 g/l + isoxaflutol, 225 g/l + cyprosulfamide, 150 g/l), 0.5 l/ha, Primextra TZ Gold 500 SC, (S-metachlor. 312.5 g/l + terbuthylazine, 187.5 g/l), 4.5 l/ ha, Merlin Flex Duo 475 SC, (isoxaflutop, 50 g/l + cyprosulfamide, 50 g/l + terbuthylazine, 375 g/l, 2.0 l/ha. After germination in the phase of 4—5 leaves (ВВСН 14—15) applied insurance herbicides Milagro 040 SC, (nicosulfuron, 40 g/l), Basis 75 v.g. rimsulfuron, 500 g/kg + thifensulfuron-methyl, 250 g/l), MаisTer Power OD (foramsulfuron, 31.5 g/l + iodosulfuron-methyl sodium, 1.0 g/l + thiencarbazone-methyl, 10 g/l + cyprosulfamide, 15 g/l), Laudis 30 WG, VG (tembotrione, 200 g/kg + isoxadifen-ethyl, 100 g/kg) and Stellar, RK (topramezone, 50 g/l + dicamba, 160 g/k) in the recommended consumption rates. The experimental plots were 1000 m2 in the first experiment, the recurrence of 3-fold and 25 m2 in the second experiment, the recurrence of 4-fold. Observations were made for meteorological indicators. Statistical processing of the results was performed according to computer «Statgraphic plus» programs. Results. Mixed type of segetal vegetation prevailed in the experimental plots. Among the perennial weeds dominated by Sonchus arvensis L., Cirsium vulgare Savi Ten., Convolvulus arvensis L., among annuals — Setaria glauca L., Setaria viridis L., Echinochloa crus-galli L., Polygonum convolvulus L., Calinsoga parviflora L., Stellaria media (L.) Vill.), Chenopodium album L., Raphanus raphanistrum L., Thlaspi arvense L., Amaranthus retroflexus L. The application of pre-emergence herbicides effectively inhibited the growth and development of weeds. 60 days after application, the effectiveness of herbicides was 87—97% against cereals and 89—98% against dicotyledonous weeds, which did not require the application of insurance herbicides. During the critical periods of maize development, a sufficient level of soil moisture was recorded during the research years. After 60 days, the effectiveness of herbicides applied after crop germination was 65—95% against dicotyledonous and 65—92% against cereal weeds. The highest effect in killing weeds was provided by MaysTer Power, 1.5 l/ha, Laudis 30 WG, VG, 0.5 kg/ha + surfactant Mero, 2.0 l/ha and Stellar, RK, 1.25 l/ha + surfactant Metholate, 1.25 l/ha. The application of herbicides has significantly reduced the aboveground mass of weeds and increased crop yields. Maize grain yield from weed-protected areas was at the level of 8.0—9.7 t/ha against 4.1—4.9 t/ha in the control. Conclusions. Both herbicide application schemes under favorable weather conditions provide effective weed control of maize crops The efficiency of pre-emergence herbicides was at the level of 87—98%, post-emergence — 65—95%. At the same time, the reduction of aboveground mass of weeds was 75—95%, and crop yields increased by 1.6—2.2 times depending on the drug.
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Claims 11
Claim · model-written summary
Mixed segetal vegetation predominated.
- Outcome
- Mixed type of segetal vegetatione0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mixed type of segetal vegetation prevailed in the experimental plots”
t0“maize”
Claim · model-written summary
Pre-emergence herbicides suppressed cereal weeds by 87—97%.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 days after application, the effectiveness of herbicides was 87—97% against cereals and 89—98% against dicotyledonous weeds”
t0“maize”
Claim · model-written summary
Pre-emergence herbicides suppressed dicot weeds by 89—98%.
- Treatment
- herbicidese0
- Interactor
- dicotyledonous weedse0weed
- Outcome
- effectiveness of herbicidese0
- Value
- 89—98%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“60 days after application, the effectiveness of herbicides was 87—97% against cereals and 89—98% against dicotyledonous weeds”
t0“maize”
Claim · model-written summary
Post-emergence herbicides controlled dicot weeds by 65—95%.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effectiveness of herbicides applied after crop germination was 65—95% against dicotyledonous and 65—92% against cereal weeds”
t0“maize”
e1“dicotyledonous weeds”
Claim · model-written summary
Post-emergence herbicides controlled cereal weeds by 65—92%.
- Treatment
- herbicides applied after crop germinatione0
- Interactor
- cereal weedse0weed
- Outcome
- effectivenesse0
- Value
- 65—92%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effectiveness of herbicides applied after crop germination was 65—95% against dicotyledonous and 65—92% against cereal weeds”
t0“maize”
Claim · model-written summary
Herbicides reduced aboveground weed mass.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of herbicides has significantly reduced the aboveground mass of weeds and increased crop yields”
t0“maize”
Claim · model-written summary
Herbicides increased crop yields.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of herbicides has significantly reduced the aboveground mass of weeds and increased crop yields”
t0“maize”
Claim · model-written summary
Protected maize yielded 8.0—9.7 t/ha versus control 4.1—4.9.
- Treatment
- weed-protected arease0
- Outcome
- grain yielde0
- Value
- 8.0—9.7 t/hae0
- Qualifier
- 4.1—4.9 t/hae0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize grain yield from weed-protected areas was at the level of 8.0—9.7 t/ha against 4.1—4.9 t/ha in the control”
Claim · model-written summary
MaysTer Power gave the highest weed kill.
- Treatment
- MaysTer Power, 1.5 l/hae0
- Interactor
- weedse0weed
- Outcome
- effect in killing weedse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest effect in killing weeds was provided by MaysTer Power, 1.5 l/ha, Laudis 30 WG, VG, 0.5 kg/ha + surfactant Mero, 2.0 l/ha and Stellar, RK, 1.25 l/ha + surfactant Metholate, 1.25 l/ha”
t0“maize”
Claim · model-written summary
Laudis with Mero gave the highest weed kill.
- Treatment
- Laudis 30 WG, VG, 0.5 kg/ha + surfactant Mero, 2.0 l/hae0
- Interactor
- weedse0weed
- Outcome
- effect in killing weedse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest effect in killing weeds was provided by MaysTer Power, 1.5 l/ha, Laudis 30 WG, VG, 0.5 kg/ha + surfactant Mero, 2.0 l/ha and Stellar, RK, 1.25 l/ha + surfactant Metholate, 1.25 l/ha”
t0“maize”
Claim · model-written summary
Stellar with Metholate gave the highest weed kill.
- Treatment
- Stellar, RK, 1.25 l/ha + surfactant Metholate, 1.25 l/hae0
- Interactor
- weedse0weed
- Outcome
- effect in killing weedse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest effect in killing weeds was provided by MaysTer Power, 1.5 l/ha, Laudis 30 WG, VG, 0.5 kg/ha + surfactant Mero, 2.0 l/ha and Stellar, RK, 1.25 l/ha + surfactant Metholate, 1.25 l/ha”
t0“maize”
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