In south India, the crop is grown mainly as a monsoon crop from April—May to December but as an irrigated crop in north and central India. As a rain-fed crop, the first week of April is the best time of planting to get a higher yield under Kerala (India) conditions, registering a 200 percent increase in yield compared to planting in the first week of June. Considering the erratic behavior of southwestern monsoons, it is better to plant the crop as early as possible after the receipt of soaking rains. When June and July plantings were compared, planting in June recorded a higher yield and low incidence of soft rot. For irrigated ginger, the best time for planting is the middle of February. Sreekumar et al.
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(1981) at Ambalavayal (India) observed that the highest germination percentage was obtained with planting at the end of January or mid-February (average 80 percent).
Phogat and Pandey (1988) at Nainital (UP), India, noted that the highest values for all indices studied (plant height, number of leaves, number of tillers, rhizome length, rhizome width, number of rhizomes/plant, and yield of fresh rhizomes) were obtained by planting on March 15. The yields for 2 years were 253.4 and 226.3 quintals/ha with planting on March 15; planting on May 29 gave the lowest yields (119 and 101.6 quintals/ha).
From Orissa (India), Mohanty et al. (1990) reported that in trials on the effect of planting date on yield, planting on April 1 gave 29.67 t/ha, which declined to 4.2 t/ha when planting was on July 1. In Sri Lanka, where ginger is a homestead crop, planting starts immediately after the first rains in April or May.
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