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Reference · Crops

Grasses

Grasses (Latin: Poaceae) form one of the most important plant families in agriculture, encompassing vital cereal crops like wheat, rice, maize, barley, and oats. These monocotyledonous plants are the foundation of global food security, providing essential grains for human consumption, livestock feed, and diverse industrial raw materials such as biofuel and textiles.

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Phyllostachys18 Pleioblastus12 Polypogon7 Phacelurus4 Phyllostachys4 Phippsia2 Pogonatherum2 Pseudoraphis2 Phaenosperma1 Pharus1 Pholiurus1 Phyllorachis1 Piptochaetium1 Pleuropogon1 Poecilostachys1 Pogonachne1 Pogonarthria1 Polytoca1 Polytrias1 Pommereulla1
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Phacelurus Phacelurus 4 items Phaenosperma Phaenosperma 1 item Phalaris truncata Phalaris truncata Pharus Pharus P. Browne Pharus Pharus 1 item Philadelphia panicgrass Panicum philadelphicum Phippsia Phippsia 2 items Phleum crypsoides Phleum crypsoides Pholiurus Pholiurus 1 item Phragmites karka Phragmites karka Phyllorachis Phyllorachis 1 item Phyllostachys Phyllostachys Sieb. et Zucc. 4 items Phyllostachys Phyllostachys 18 items Pine bluegrass Poa scabrella Pineywoods dropseed Sporobolus junceus Piptatherum blancheanum Piptatherum blancheanum Piptatherum coerulescens Piptatherum coerulescens Piptatherum paradoxum Piptatherum paradoxum Piptatherum virescens Piptatherum virescens Piptochaetium Piptochaetium 1 item Pitted blue grass Bothriochloa decipiens Plains bluegrass Poa arida Plains muhly Muhlenbergia cuspidata Pleioblastus Pleioblastus Nakai Pleioblastus Pleioblastus 12 items Pleuropogon Pleuropogon 1 item Plicate sweet-grass Glyceria notata Plonka fescue Festuca plonkae Poa diversifolia Poa diversifolia Poa humilis Poa humilis Poa jubata Poa jubata Poa juncifolia Poa juncifolia Poa labillardierei Poa labillardierei Poa perconcinna Poa perconcinna Poa sphondylodes Poa sphondylodes Poa triodioides Poa triodioides Poa versicolor Poa versicolor Poecilostachys Poecilostachys 1 item Pogonachne Pogonachne 1 item Pogonarthria Pogonarthria 1 item Pogonatherum Pogonatherum P. Beauv. 2 items Pogonatherum Pogonatherum Polish wheat Triticum polonicum Polypogon Polypogon 7 items Polytoca Polytoca 1 item Polytrias Polytrias 1 item Pommereulla Pommereulla 1 item Pontic feather grass Stipa pontica Porcius fescue Festuca porcii Porcupine grass Stipa spartea Potamophila Potamophila 1 item Pourret's Bent Agrostis pourretii Poverty dropseed Sporobolus vaginiflorus Prionanthium Prionanthium 1 item Procumbent sweetgrass Glyceria declinata Psammagrostis Psammagrostis 1 item Psathyrostachys Psathyrostachys 1 item Psathyrostachys fragilis Psathyrostachys fragilis Pseudanthistiria Pseudanthistiria 1 item Pseudoraphis Pseudoraphis 2 items

Grasses

Botanically, grasses are characterized by fibrous root systems, jointed stems known as culms, and leaves with parallel venation. Their flowers are typically arranged in spikelets, forming complex inflorescences like spikes or panicles. The fruit is a caryopsis, a type of grain in which the fruit wall is fused to the seed coat, distinguishing them from other botanical fruits.

The distribution of grasses is worldwide, ranging from equatorial regions to subarctic zones. This adaptability is the result of long-term natural evolution and centuries of selective breeding. Most cultivated grasses originated in fertile valleys of the Near East, East Asia, and the Americas, where ancient civilizations first practiced sedentary agriculture.

Agronomic requirements depend on the specific species, though most grasses thrive in well-drained soils rich in nitrogen, phosphorus, and potassium. Crop management practices include soil tillage, strategic fertilization, and adherence to crop rotation cycles to maintain soil health. Irrigation is essential for high-yield species like rice, while others are adapted to rain-fed farming systems.

Key challenges in cultivation include fungal pathogens like rusts, smuts, and mildews, alongside insect pests such as aphids, stem borers, and locusts. Integrated Pest Management (IPM) strategies, involving the use of resistant crop varieties, biological control, and judicious pesticide application, are essential for ensuring sustainable yields and optimal grain quality.

  • Cereals: primary grains for food production.
  • Forage grasses: critical for livestock pastures and silage.
  • Turf and ornamental grasses: significant for landscaping and soil erosion control.