Crop Microclimate and Modification
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Which of the following refers to the immediate atmospheric environment surrounding an individual plant or crop canopy?
Question No. 2 Marks +1 -0 Time
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The primary purpose of installing windbreaks in agricultural fields is to modify which microclimatic factor?
Question No. 3 Marks +1 -0 Time
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Which type of mulch is most effective in increasing soil temperature and promoting early crop growth in cooler climates?
Question No. 4 Marks +1 -0 Time
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The ratio of reflected solar radiation to incident solar radiation is known as:
Question No. 5 Marks +1 -0 Time
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Fogging or misting systems are primarily used in greenhouses to control which microclimatic parameter?
Question No. 6 Marks +1 -0 Time
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What is the primary effect of a dense crop canopy on the microclimate within the canopy?
Question No. 7 Marks +1 -0 Time
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Shade nets are predominantly used in horticulture to mitigate the adverse effects of:
Question No. 8 Marks +1 -0 Time
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The process where heat is transferred from a warmer surface to a cooler fluid (air or water) in motion is called:
Question No. 9 Marks +1 -0 Time
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Which modification technique is most effective for frost protection in orchards by releasing latent heat of fusion?
Question No. 10 Marks +1 -0 Time
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The term 'degree days' (or Growing Degree Days) is primarily used in agriculture to predict:
Question No. 11 Marks +1 -0 Time
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What is the effect of white plastic mulch on soil temperature compared to bare soil?
Question No. 12 Marks +1 -0 Time
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Row covers (e.g., spunbonded polypropylene) are typically used for:
Question No. 13 Marks +1 -0 Time
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Which gas is often enriched in greenhouse microclimates to enhance photosynthesis?
Question No. 14 Marks +1 -0 Time
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The 'boundary layer' around a plant leaf is characterized by:
Question No. 15 Marks +1 -0 Time
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Which of the following is an example of an advective frost?
Question No. 16 Marks +1 -0 Time
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What impact does increasing planting density typically have on the microclimate within a crop canopy?
Question No. 17 Marks +1 -0 Time
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Reflective mulches (e.g., silver plastic mulch) are primarily used for:
Question No. 18 Marks +1 -0 Time
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The measurement of photosynthetically active radiation (PAR) is critical for understanding the microclimate's impact on:
Question No. 19 Marks +1 -0 Time
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Which of these is a direct method to raise air temperature around individual plants to protect against light frost?
Question No. 20 Marks +1 -0 Time
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When converting a traditional open field into a polyhouse (plastic greenhouse), the most significant microclimatic change expected is:
Question No. 21 Marks +1 -0 Time
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The use of an overhead fan system in an orchard during a radiation frost event aims to:
Question No. 22 Marks +1 -0 Time
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Soil solarization, a microclimate modification technique, is primarily used for:
Question No. 23 Marks +1 -0 Time
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Which orientation of crop rows is generally preferred in areas with strong prevailing winds to minimize wind damage and improve microclimate?
Question No. 24 Marks +1 -0 Time
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The phenomenon of 'thermal inversion' can lead to increased frost risk because:
Question No. 25 Marks +1 -0 Time
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The use of anti-transpirants on crop leaves primarily aims to modify which aspect of the crop microclimate interaction?

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