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[ESM345] All _______  have their optimal climatic requirements for economic production
crops

[ESM345] __________  the process of the flowering response to daylight, are controlled by solar radiation.
Photoperiodism

[ESM345] Some plants are light loving (e.g. pine, birch, and larch trees) while others love _______ (e.g. beech and spruce)
shade

[ESM345] Agriculture is perhaps the most weather sensitive of all man’s _________ activities
economic

[ESM345] Citrus fruit, cotton, sugarcane and rice will not grow well if temperatures are below ____.
15ËšC

[ESM345] ________  and pineapples thrive only when temperatures are always above 21ËšC for at least part of the growing season
Coconuts

[ESM345] The main climatic elements that affect crop production are solar radiation, temperature, moisture, _______.
wind

[ESM345] Tropical crops like ______  and dates require high temperatures throughout the year
cocoa

[ESM345] ______  radiation provides the warmth and the energy that powers the agricultural system.
Solar

[ESM345] Excessive heat can destroy the plant ________
protoplasm.