A Farmer's Primer on Growing Upland Rice. by M.A. & Vergara, B.S. Arraudeau

By M.A. & Vergara, B.S. Arraudeau

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Extra info for A Farmer's Primer on Growing Upland Rice.

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Leaves are relatively short and erect. Leaves of the main stem • • • The coleoptile comes out of the seed first. It is followed by the primary leaf, then the secondary leaf with the first expanded leaf blade, then the other leaves. The last leaf is called the flag leaf. Most upland traditional rices have long, broad, and droopy leaves. 49 Leaf production • • • 50 Rice leaves on the main stem are produced one at a time. A new leaf is produced about every 7 days. A new rice leaf grows on the opposite side of the leaf before it.

Weeds are the most important constraint to vigorous seedlings. Weak, pale, or missing seedlings result from weed competition. Leaves The rice leaf 47 Leaf variations in upland rices 48 Leaves of the main stem 49 Leaf production 50 Effect of drought on leaves 51 The rice leaf • The rice plant is a grass. • A rice leaf, like all grasses, has parallel veins. • Other grass leaves have a collar but may have only a ligule or • an auricle or neither. A rice leaf has both a ligule and two auricles. 47 Leaf variations in upland rices • • • • 48 A.

Uniform size of soil particles • The particles of upland soils are often irregular. • Poor soil texture causes irregular growth. • Soils with fine, uniform particles are better. 43 Early and good weeding • • 44 Early and good weeding is very important in upland rice. Weeds are the most important constraint to vigorous seedlings. Weak, pale, or missing seedlings result from weed competition. Leaves The rice leaf 47 Leaf variations in upland rices 48 Leaves of the main stem 49 Leaf production 50 Effect of drought on leaves 51 The rice leaf • The rice plant is a grass.

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