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Key Management Techniques for Rice at the Booting Stage in August

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I. Field Management at the Booting Stage After good early vegetative growth, rice enters the reproductive growth stage of the middle and late periods. Strengthening water and fertilizer management at this stage is very important for high yields. Apply panicle fertilizer judiciously, depending on the field growth of the rice: for plots with too many stems per mu and dark green leaf color, do not apply; for plots with insufficient stems per mu and yellow leaf color, apply fertilizer, which can produce a clear yield increase. 1. Applying booting fertilizer: around August 5, for plots that did not receive early panicle fertilizer (mid-to-late July) and whose leaves have turned yellow at this time, apply 5-7 jin of urea per mu.

I. Field Management at the Booting Stage

After good early vegetative growth, rice enters the reproductive growth stage of the middle and late periods. Strengthening water and fertilizer management at this stage is very important for high yields. Apply panicle fertilizer judiciously, depending on the field growth of the rice: for plots with too many stems per mu and dark green leaf color, do not apply; for plots with insufficient stems per mu and yellow leaf color, apply fertilizer, which can produce a clear yield increase.

1. Applying booting fertilizer: around August 5, for plots that did not receive early panicle fertilizer (mid-to-late July) and whose leaves have turned yellow at this time, apply 5-7 jin of urea per mu. At this time the plants are growing vigorously and leaf transpiration is high, making this the period of greatest water demand, so water must not be lacking; a shortage of water increases spikelet abortion and empty grains, leading to reduced yield. Irrigate 3-5 cm.

2. Applying grain fertilizer: in mid-August, if the leaf color has clearly turned yellow at the full heading stage, supplementary grain fertilizer should be applied; 5 jin of urea per mu can increase the 1000-grain weight. From heading to full heading is the second critical period for water demand, and a water layer (1-2 cm) should be maintained; at this time a shortage of water easily causes pollen and stigmas to dry up, preventing pollination and increasing empty shells. After full heading, irrigate the stubble and use alternate wetting and drying water management, which helps supply oxygen to the roots and preserve them, preserve the leaves through the roots, and plump the grains through the leaves.

II. Pest and Disease Control

1. Controlling the second generation of the striped stem borer: use a 500-fold dilution of trichlorfon, spraying 30 kg per mu.

2. Controlling rice blast: when central diseased plants are found, control them promptly. Use 5% carbendazim, 100 grams per mu, diluted in 60 kg of water for spraying.

3. Controlling rice false smut: 7-10 days before heading, use 5% validamycin at 250-300 grams per mu diluted in 25-30 kg of water for spraying.

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