Crop Production (Kharif & Rabi) – MCQ Series 1

By Skumar

 

Rice (Paddy) – Kharif Crop (50 MCQs)


A. Varieties & Season (5 MCQs)

  1. Major season for Kharif rice sowing in India is:
    ➤ A. Winter B. Summer C. Monsoon D. Spring
    Ans: C – Rice is a Kharif crop dependent on monsoon rains.

  2. Short-duration rice varieties mature in:
    ➤ A. 90–120 days B. 150–180 days C. 200–220 days D. 250–270 days
    Ans: A – Suitable for rainfed areas with short growing season.

  3. High-yielding varieties of rice are released by:
    ➤ A. Local seed dealers B. Farmers C. ICAR/SAUs D. Private traders
    Ans: C – Only ICAR/SAUs release officially recommended HYVs.

  4. Flood-tolerant rice varieties are suitable for:
    ➤ A. Drought-prone regions B. Low-lying waterlogged areas C. Sandy soils D. Hilly tracts
    Ans: B – HYVs like Swarna-Sub1 survive submergence.

  5. Aromatic rice varieties include:
    ➤ A. Basmati B. Swarna C. IR-64 D. MTU-1010
    Ans: A – Basmati is the famous aromatic variety of North India.

B. Land Preparation & Nursery (5 MCQs)

  1. Primary tillage for lowland rice involves:
    ➤ A. Disc harrow B. Ploughing 2–3 times C. Hoeing only D. No tillage
    Ans: B – Deep ploughing improves soil structure for puddled rice.

  2. Puddling in rice is done to:
    ➤ A. Increase soil drainage B. Reduce percolation & control weeds C. Improve aeration D. Enhance drought tolerance
    Ans: B – Puddling conserves water and controls early weeds.

  3. Ideal seedbed for nursery preparation should be:
    ➤ A. Loose, fine tilth B. Hard clods C. Dry and coarse D. Sandy only
    Ans: A – Fine tilth ensures uniform germination.

  4. Seed treatment in rice is recommended to control:
    ➤ A. Insect pests B. Soil & seed-borne diseases C. Water stress D. Lodging
    Ans: B – Fungicides (e.g., Carbendazim) prevent seedling diseases.

  5. Optimum seed rate for transplanted rice is:
    ➤ A. 20–25 kg/ha B. 60–80 kg/ha C. 100–120 kg/ha D. 150–200 kg/ha
    Ans: A – Lower seed rate is enough due to transplanting.

C. Sowing / Transplanting (10 MCQs)

  1. Transplanting of rice seedlings is generally done at:
    ➤ A. 10–15 DAS B. 20–30 DAS C. 35–45 DAS D. 50–60 DAS
    Ans: B – Seedlings of 20–30 days age give best establishment.

  2. Spacing for transplanted rice in medium-duration varieties is:
    ➤ A. 15×15 cm B. 20×15 cm C. 20×20 cm D. 25×25 cm
    Ans: C – Common spacing for optimum tillering and yield.

  3. Direct-seeded rice reduces:
    ➤ A. Seed cost & labor B. Water use only C. Weed growth D. Fertilizer requirement
    Ans: A – Eliminates nursery preparation & transplanting labor.

  4. The main advantage of line sowing over broadcasting is:
    ➤ A. Higher plant density B. Uniform stand & easy intercultural operations C. Early maturity D. Less fertilizer use
    Ans: B – Facilitates weeding & nutrient management.

  5. Raising nursery for rice transplanting is preferred in:
    ➤ A. Rainfed uplands B. Irrigated lowlands C. Drought-prone fields D. Sandy soils
    Ans: B – Allows uniform seedlings for puddled fields.

  6. Seedlings older than 30 days for transplanting may cause:
    ➤ A. Early tillering B. Stunted growth & delayed maturity C. Higher yield D. Better nutrient uptake
    Ans: B – Older seedlings have reduced tillering ability.

  7. The recommended seedling age for medium-duration rice varieties is:
    ➤ A. 10–15 days B. 20–25 days C. 30–35 days D. 40–45 days
    Ans: B – Standard ICAR recommendation.

  8. For wet direct-seeded rice, seed rate is usually:
    ➤ A. 20–25 kg/ha B. 40–50 kg/ha C. 60–80 kg/ha D. 100–120 kg/ha
    Ans: B – Higher than transplanting due to direct sowing losses.

  9. Optimum seedling depth for transplanting is:
    ➤ A. 1–2 cm B. 3–4 cm C. 5–6 cm D. 7–8 cm
    Ans: B – Shallow transplanting ensures rapid root establishment.

  10. Hill spacing of rice involves:
    ➤ A. Broadcasting seeds randomly B. Transplanting 1–3 seedlings per hill C. Sowing thickly in lines D. Only direct seeding
    Ans: B – Each hill has a few seedlings for better tillering.

D. Fertilizer & Nutrient Management (10 MCQs)

  1. Recommended NPK dose for medium-duration rice varieties:
    ➤ A. 80:40:40 B. 100:50:50 C. 120:60:60 D. 60:30:30
    Ans: A – Standard ICAR POP recommendation.

  2. Nitrogen in rice is generally applied in:
    ➤ A. One basal dose B. Split doses at basal, tillering & panicle initiation C. Only at flowering D. After harvest
    Ans: B – Split application ensures efficient uptake.

  3. Zinc deficiency in rice shows as:
    ➤ A. Interveinal chlorosis in young leaves B. Wilting C. Leaf rolling D. Lodging
    Ans: A – Corrected by ZnSO4 application.

  4. Phosphorus in rice mainly promotes:
    ➤ A. Root development & early tillering B. Leaf expansion C. Lodging D. Pest resistance
    Ans: A

  5. Potassium in rice improves:
    ➤ A. Drought tolerance & disease resistance B. Lodging only C. Seed germination D. Pest incidence
    Ans: A

  6. Foliar spray of micronutrients is used to correct:
    ➤ A. Major nutrient deficiencies B. Micro-nutrient deficiencies like Zn, Fe C. Water stress D. Lodging
    Ans: B

  7. Basal dose of NPK is usually applied:
    ➤ A. At sowing/transplanting B. After tillering C. At flowering D. At harvest
    Ans: A

  8. Top-dressing of nitrogen is avoided after:
    ➤ A. Tillering B. Panicle initiation C. Flowering D. Seedling stage
    Ans: C – Late N application reduces grain quality.

  9. Use of organic manures improves:
    ➤ A. Soil fertility & structure B. Only pest resistance C. Lodging D. Flowering time
    Ans: A

  10. Balanced fertilization ensures:
    ➤ A. Higher yield & quality B. Only reduced water use C. Less labor D. Early harvest
    Ans: A

    E. Irrigation Management (5 MCQs)

    1. Rice requires continuous flooding during which stage for maximum yield?
      ➤ A. Germination B. Tillering to panicle initiation C. Grain filling D. Maturity
      Ans: B – Continuous standing water promotes tillering and reduces weed competition.

    2. Alternate wetting and drying (AWD) irrigation in rice helps to:
      ➤ A. Increase water use efficiency & reduce methane emission B. Increase pest incidence C. Delay flowering D. Reduce yield
      Ans: A – Conserves water and improves sustainability.

    3. Life-saving irrigation in rainfed rice is applied:
      ➤ A. Only at sowing B. During critical drought periods C. After harvest D. Only in nursery
      Ans: B – Prevents yield loss during dry spells.

    4. Water depth for transplanted rice is usually maintained at:
      ➤ A. 1–2 cm B. 3–5 cm C. 10–12 cm D. 15–20 cm
      Ans: B – Ensures optimal growth and nutrient uptake.

    5. Excess water at flowering in rice can cause:
      ➤ A. Lodging & spikelet sterility B. Increased tillers C. Early maturity D. Pest resistance
      Ans: A – Waterlogging at reproductive stage reduces yield.

    F. Weed & Pest Management (5 MCQs)

    1. Critical period of weed competition in rice is approximately:
      ➤ A. 0–10 DAS B. 20–40 DAS C. 50–70 DAS D. At harvest
      Ans: B – Effective weed removal during this stage avoids major yield loss.

    2. Pre-emergence herbicide commonly used in Kharif rice:
      ➤ A. Butachlor B. Atrazine C. Glyphosate D. Paraquat
      Ans: A – ICAR-recommended for controlling grassy weeds.

    3. Brown plant hopper (BPH) in rice is:
      ➤ A. A fungal disease B. An insect pest C. A weed D. A nematode
      Ans: B – BPH is a major sap-sucking insect pest.

    4. Integrated Pest Management (IPM) in rice includes:
      ➤ A. Chemical control only B. Biological, cultural, and chemical methods C. Fertilizer application D. Irrigation only
      Ans: B – Sustainable pest management strategy recommended by ICAR.

    5. Seed treatment with Carbendazim in rice prevents:
      ➤ A. BPH infestation B. Fungal seedling diseases C. Weed growth D. Lodging
      Ans: B – Controls diseases like seedling blight.

    G. Growth & Yield Factors (5 MCQs)

    1. Maximum tillering in rice occurs during:
      ➤ A. 0–10 DAS B. 15–35 DAS C. Panicle initiation D. Maturity
      Ans: B – Tillering stage determines potential yield.

    2. Nitrogen deficiency in rice shows as:
      ➤ A. Yellowing of older leaves B. Yellowing of younger leaves C. Leaf rolling D. Lodging
      Ans: A – Older leaves turn yellow; corrected by top-dressing N.

    3. High plant density in rice can lead to:
      ➤ A. Lodging & reduced tillering B. Early flowering C. Better grain filling D. Disease resistance
      Ans: A – Overcrowding reduces light penetration and increases lodging risk.

    4. Grain yield of rice is determined by:
      ➤ A. Number of panicles per unit area B. Number of grains per panicle C. Grain weight D. All of the above
      Ans: D – All three factors collectively determine final yield.

    5. Proper management of all agronomic practices is called:
      ➤ A. Cultural practice B. Integrated Crop Management (ICM) C. Weed management D. Fertilizer application
      Ans: B – ICM combines all practices for maximum yield.

    H. Harvesting & Post-Harvest Management (5 MCQs)

    1. Rice is ready for harvest when grain moisture content is approximately:
      ➤ A. 5–10% B. 20–25% C. 35–40% D. 50–55%
      Ans: B – Harvesting at 20–25% moisture reduces shattering loss.

    2. Delayed harvesting in rice can lead to:
      ➤ A. Shattering & grain loss B. Improved quality C. Early seed germination D. Reduced pest incidence
      Ans: A – Over-mature grains fall off easily.

    3. Threshing of rice is done to:
      ➤ A. Remove husk B. Separate grains from panicles C. Dry grains D. Apply fertilizer
      Ans: B – Mechanical or manual threshing separates grains.

    4. Proper drying of rice grains reduces:
      ➤ A. Moisture content for safe storage B. Yield C. Fertilizer requirement D. Plant height
      Ans: A – Prevents fungal spoilage and storage loss.

    5. Harvest index in rice is defined as:
      ➤ A. Grain yield/total biomass B. Leaf area index C. Number of tillers D. Plant height
      Ans: A – Measures the efficiency of biomass partitioning to grain.


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