R.K. Sharma Test 15 — Agri Master Mind

The critical period for weed control in cotton is ______.
  • 20-40 days
  • 15-60 days
  • 30-45 days
  • 30-120 days
Which herbicide application method is most effective for deep-rooted and perennial weeds?
  • Sub-surface application
  • Soil application
  • Band application
  • Soil surface application
The effect of crop-weed competition is generally ______.
  • Negative
  • Positive
  • Both A & B
  • Neutral
Which of the following is NOT a symptom of pre-emergence herbicide damage?
  • Reduced germination
  • Suppressed crop growth
  • Yellowing & chlorosis
  • Deformity in crop plants
2,4-D herbicide is used for ______.
  • Grassed weeds
  • Broadleaf weeds
  • Sedges
  • Both A & B
DR BIO SEDGE bioherbicide is used for which weed?
  • Cyperus
  • Cuscuta
  • Cassia
  • Abutilon
Which of the following is NOT a non-selective herbicide?
  • Paraquat
  • Diquat
  • Pendimethalin
  • All of the above
Clodinafop belongs to which chemical group of herbicides?
  • Phenoxy alkanoic group
  • Diphenyl ether
  • Sulfonylureas
  • Chlorophenoxy compound
Imazethapyr is mainly used for the ______ crop.
  • Potato
  • Tomato
  • Groundnut
  • Chilies
In herbicide toxicity labeling, the color of the triangle for moderate toxicity is ______.
  • Yellow
  • Red
  • Blue
  • Green
Statement 1: The chemical group of pendimethalin is dinitroanilines. Statement 2: 2,4,5-T and TCA belong to the chlorophenoxy herbicides chemical group.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
The acute oral toxicity (LD<sub>50</sub>) for the highly toxic category of herbicides is ______.
  • 501-5000
  • 50-501
  • 501-5000
  • 51-500
Neochetina spp. is a bioagent for ______.
  • Water hyacinth
  • Zygrogramma bicolorata
  • Xanthium strumarium
  • Aquatic weeds
Statement 1: Devine is made up of Phytophthora palmivora. Statement 2: Echinochloa is a target 🎯 weed for VELGO bioherbicide.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct & statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
Statement 1: A lower seed rate increases Avena fatua competition in wheat 🌾 . Statement 2: Criss-cross sowing in wheat uses a spacing of 22.5 mm.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
The trade name of Nitrofen is ______.
  • Stam F-34
  • ToKe E-24
  • Toke E-25
  • Stam F-35
Crocidosema lantana is a bioagent for which weed?
  • Lantana
  • Eichhornia
  • Opuntia
  • Cyperus
Statement 1: Bactra verutana is a bioagent for Cyperus rotundus. Statement 2: Rhizoctonia solani is a bioagent for Eichhornia crassipes.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
Butachlor is a ______ herbicide for rice.
  • Pre-emergence
  • Post-emergence
  • Pre-plant incorporation
  • All of the above
Statement 1: Post-emergence herbicides are applied 30-40 DAS. Statement 2: Fallow application of herbicide occurs > 10 days after sowing.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
Statement 1: Pendimethalin controls both annual grasses & broadleaf weeds (BLWs). Statement 2: The trade name of metolachlor is Dual.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
For Phalaris minor & Avena fatua control, isoproturon herbicide is applied ______ days after sowing.
  • 20-25
  • 15-20
  • 30-35
  • 45580
Statement 1: Trifluralin herbicide inhibits DNA synthesis. Statement 2: Carbamate group herbicides inhibit cell division.
  • Both are incorrect statements
  • Both are correct statements
  • Statement 1 is correct and statement 2 is incorrect
  • Statement 1 is incorrect & statement 2 is correct
Geological erosion takes place ______.
  • Slowly
  • Fast
  • Very fast
  • Very slow
Weed competition causes the maximum reduction in yield (%) in which vegetable crop?
  • Onion
  • Tomato
  • Okra
  • Cabbage
Ronstar is the trade name of which herbicide?
  • Oxyfluorfen
  • Oxadiazon
  • Quizalafop
  • Imazethapyr
Statement 1: Plantguard is the trade name of 2,4-D. Statement 2: Goal is a trade name of sulfosulfuron.
  • Statement 1 is incorrect & statement 2 is correct
  • Statement 1 is correct and statement 2 is incorrect
  • Both are correct statements
  • Both are incorrect statements
Which of the following herbicides has a mode of action of microtubule assembly inhibition?
  • Pendimethalin
  • Glyphosate
  • Paraquat
  • 2,4-D sodium salt
______ of target plants due to the different chemicals exuded by weeds or crops is known as allelopathy.
  • Stimulation
  • Inhibition
  • Both A & B
  • Resistance
The length of slope (%) in class IV land is ______.
  • 5-10%
  • 3-5%
  • 5-7%
  • 7-12 %