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Questions and Answers
Match the planting material with their characteristics:
Match the planting material with their characteristics:
Aerial tubers = Best planting material for D.bulbifera Large setts = Produce large total yields Healthy tubers = Used for planting setts Diseased plants = Marked to prevent spreading diseases
Match the disease symptoms to the correct disease type:
Match the disease symptoms to the correct disease type:
Virus = Internal brown spotting Nematodes = Vertical cracks
Match the advantages of pre-sprouting with their descriptions:
Match the advantages of pre-sprouting with their descriptions:
Earlier yield = Helps produce a quicker harvest Homogeneous stand = Ensures uniform plant growth Extra time = Requires additional cultivation time Extra care = Needs careful handling during planting
Match the symptom with its related observation:
Match the symptom with its related observation:
Match the recommended sett weight with its impact:
Match the recommended sett weight with its impact:
Match the treatment of cut pieces with their purposes:
Match the treatment of cut pieces with their purposes:
Match the yields with their definitions:
Match the yields with their definitions:
Match the methods of rapid multiplication with their context:
Match the methods of rapid multiplication with their context:
Match the type of sweet potato vine cutting with its yield potential:
Match the type of sweet potato vine cutting with its yield potential:
Match the recommended length of vine cuttings with its measurement:
Match the recommended length of vine cuttings with its measurement:
Match the age of the sweet potato plant with its cutting quality:
Match the age of the sweet potato plant with its cutting quality:
Match the disease to the corresponding planting material condition to avoid:
Match the disease to the corresponding planting material condition to avoid:
Match the method for preparing vine cuttings with its purpose:
Match the method for preparing vine cuttings with its purpose:
Match the characteristic of healthy planting material with its importance:
Match the characteristic of healthy planting material with its importance:
Match the type of propagation method with its description:
Match the type of propagation method with its description:
Match the reason for avoiding certain cuttings with its consequences:
Match the reason for avoiding certain cuttings with its consequences:
Match the following tuber skin colors of sweet potato with their corresponding descriptions:
Match the following tuber skin colors of sweet potato with their corresponding descriptions:
Match the following tuber flesh colors of sweet potato with their corresponding descriptions:
Match the following tuber flesh colors of sweet potato with their corresponding descriptions:
Match the following temperature ranges with their sweet potato growth implications:
Match the following temperature ranges with their sweet potato growth implications:
Match the following rainfall levels with their effects on sweet potato growth:
Match the following rainfall levels with their effects on sweet potato growth:
Match the following soil types with their characteristics for sweet potato cultivation:
Match the following soil types with their characteristics for sweet potato cultivation:
Match the following altitude ranges with their effects on sweet potato growth:
Match the following altitude ranges with their effects on sweet potato growth:
Match the following day length characteristics with their implications for sweet potato cultivars:
Match the following day length characteristics with their implications for sweet potato cultivars:
Match the following sweet potato traits with their corresponding features:
Match the following sweet potato traits with their corresponding features:
Match the following tuber crops with their primary characteristics:
Match the following tuber crops with their primary characteristics:
Match the following authors with their corresponding works:
Match the following authors with their corresponding works:
Match the following references with their publication years:
Match the following references with their publication years:
Match the following tuber crops with their notable uses:
Match the following tuber crops with their notable uses:
Match the following documents with their availability status:
Match the following documents with their availability status:
Match the following tuber crop characteristics with their effects:
Match the following tuber crop characteristics with their effects:
Match the following tuber crops with their cultivation regions:
Match the following tuber crops with their cultivation regions:
Match the following references with their focus area:
Match the following references with their focus area:
Match the following vine planting methods with their descriptions:
Match the following vine planting methods with their descriptions:
Match the following factors affecting sweet potato yield with their explanations:
Match the following factors affecting sweet potato yield with their explanations:
Match the following sweet potato spacing recommendations with their seasons:
Match the following sweet potato spacing recommendations with their seasons:
Match the following sweet potato planting times with their characteristics:
Match the following sweet potato planting times with their characteristics:
Match the following quantities of cuttings per planting position with their planting methods:
Match the following quantities of cuttings per planting position with their planting methods:
Match the following locations with their specific planting recommendations for sweet potato:
Match the following locations with their specific planting recommendations for sweet potato:
Match the following issues during sweet potato cultivation with their consequences:
Match the following issues during sweet potato cultivation with their consequences:
Match the following growing conditions with their possible effects on sweet potato growth:
Match the following growing conditions with their possible effects on sweet potato growth:
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Study Notes
Planting Materials and Techniques
- Cutting Preparation: Dust cut pieces with ash, well-washed sand, or fungicides; dry in a shady location for 2-3 days.
- Preferred Planting Materials: Aerial tubers are considered the best planting material for D. bulbifera.
- Optimal Size for Planting: Setts weighing 150-500 grams are recommended for high net yields; larger setts sprout better under adverse conditions.
Health and Disease Management
- Source of Planting Material: Only use tubers from healthy plants; field selection is crucial to ensure the quality of planting setts.
- Diseases of Concern: Major plant health issues include viruses (symptoms: vein banding, mottling, leaf distortion) and nematodes (symptoms: vertical cracks, tuber skin flaking, softness).
Pre-sprouting Process
- Preparation of Setts: Cut and treat setts then bury in a well-drained pit layered with soil.
- Advantages:
- Produces earlier yields.
- Promotes a homogeneous stand for better growth.
- Disadvantages:
- Requires extra time and labor.
- Needs careful handling during planting of sprouted setts.
Sweet Potato Cultivar Characteristics
- Tuber Skin Colors: White, tan, pink, red, or copper.
- Tuber Flesh Colors: Can be white, yellow, purple, or combinations.
- Growth Characteristics: No dormancy period; apical dominance decreases with storage.
Environmental Requirements for Sweet Potatoes
- Temperature Preferences: Optimal growth at temperatures of 24°C or above; damage occurs below 10°C.
- Geographical Range: Grows best between latitudes 40°N and 32°S, with varying production systems.
- Rainfall Needs: Requires an annual rainfall of 75-100 cm; can tolerate drought but yields are affected if water is scarce during the first 50-60 days post-planting.
- Soil Conditions: Thrives in well-drained sandy loams with high organic matter; optimal pH 5.6 - 6.6.
- Altitude Flexibility: Grows well at altitudes from sea level to 2100 meters.
Propagation Techniques for Sweet Potatoes
- Methods: Propagated via tuber cuttings or vine cuttings; farmers typically use vine cuttings.
- Best Planting Materials: Tip cuttings yield better; length of cuttings should be 30-40 cm.
- Plant Health: Use cuttings from young, healthy plants (2-3 months old) for higher yields; older plants are less viable.
Management Practices
- Planting Methods: Sweet potatoes can be planted flat or on mounds/ridges, preferred for shallow or poorly drained soils.
- Timing for Planting: Planting can occur year-round, but the highest yields are often in the dry season; excessive rain affects yield negatively.
- Spacing Guidelines: Recommended spacing varies between 1m between ridges and 30-50 cm between cuttings; adjust accordingly during wet and dry seasons.
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