Context: Tobacco growers in Andhra Pradesh are set to reap the fallout of a substantial drop in crop output in key producing countries like Brazil, Zimbabwe and Indonesia because of weather extremes, such as drought and unseasonable rain.
Tobacco
o Frost-Free Period: A frost-free period of 90 to 120 days is necessary from transplanting to the last harvest of leaves.
o Temperature: The mean daily temperature for optimal growth falls between 20°C and 30°C.
o Dry Period Requirement: A dry period is essential for the ripening and harvest of tobacco leaves.
o Rainfall: Excessive rainfall leads to thin and lightweight leaves, impacting the quality of the crop.
o Soil Conditions: Tobacco crops are sensitive to waterlogging and require well-aerated, drained soils.
o pH Range: The optimum pH for tobacco cultivation ranges from 5 to 6.5. Soil salinity affects leaf quality.
o Water Requirements: Water needs vary based on climate and growing period, ranging from 400 to 600mm for maximum yield.
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