|Scientific Name||Phalaris minor Retz.|
|Common Names||English: Lesser canarygrass; German: Kleines Glanzgras; French: Phalaris mineur; Spanish: Alpistillo|
|Description||Winter annual propagated by seeds.|
Glumes not as conspicuously striped as in P. brachystachys.
The youngest leaf is rolled, the plant more or less slender with stems up to 90 cm (35.43 inch) tall.
Erect or decumbent, caespitose.
Leaves long, linear, acuminate. Ligule is an oblong hyaline membrane, about 2-3(-5) mm (0.078 - 0.118 - 0.197 inch) long, often truncate and/or fringed.
No auricles, sheath smooth.
Panicle more or less protruding or entirely protruding from the uppermost swollen leaf sheath, ovate to oblong, 5 - 8 cm (1.97 - 3.15 inch) long, green.
Spikelets green, broadly lanceolate on short pedicels, shining, 4 -6 mm (0.16 - 0.24 inch) long, strongly laterally compressed.
Glumes 4 - 6 mm ( (0.16 - 0.24 inch) long, fertile lemma lanceolate about 3 mm (0.118 inch) long, more or less lustrous; sterile lemma solitary, about (0.2-)1(-1.8) mm (0.008 - 0.039 - 0.07 inch) long. Glumes subequal, with a broad erose-dentate or entire wing near the tip. Hermaphrodite florets.
Fruit free from both lemma and palea, elliptical to ovoid, laterally compressed, 2-2.3 mm (0.08 - 0.09 inch) long, 1.2-1.4 mm (0.047 - 0.055 inch) wide, not grooved, glabrous.
Hilum 1-1.2 mm (0.039 - 0.047 inch) long, linear.
Embryo 0.5-1.2 mm (0.019 - 0.047 inch) long, not waisted.
Seeds germinate best between 10-20 °C (50 - 68°F). No germination at temperatures below 5 °C (41°F) or above 30 °C (86°F).
Viability of Seeds
Short lived in soil seed bank.
P. minor prefers medium-to-heavy, moist and well drained soils, but it will also grow under alkaline and saline conditions.
Lesser canarygrass is a serious weed in rice and wheet. Due to its high competitiveness it infests many crops in arable fields on all continents.
Useful non-chemical contribution to Integrated Weed Management
Zero-tillage may reduce P. minor.
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