- Отрасли: Agriculture
- Number of terms: 29629
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A group sampling of experimental units which divides the project area into a grid system of square blocks.
Industry:Agriculture
1). Any agent causing widespread white coloring, yellowing or blackening necrosis of leaves and shoots. 2). A plant disease symptom characterized by the presence of extensive necrotic areas on plant organs.
Industry:Agriculture
A grouping of experimental units made according to homogeneity of experimental units, sometimes called replication. Blocking is an effective way to control experimental error. If the number of experimental units in a block is equal to the number of treatments, the block is said to be "complete" (and is equivalent to replication). Otherwise, it is "incomplete."
Industry:Agriculture
A specially prepared nursery where many test materials of rice are grown to determine their resistance to blast, usually at the seedling stage. The test period usually lasts for 30 days from seeding time.
Industry:Agriculture
A disease caused by the fungus Pyricularia grisea. Leaf lesions are typically spindle-shaped, wide in the center and pointed toward either end. Large lesions usually develop gray centers. The disease can have different forms: leaf blast, node blast, or neck blast. Lesions on panicle neck nodes may result in empty panicles (often called rice blast), "rotten neck" or "neck rot" symptoms.
Industry:Agriculture
Stage in the development of insect eggs wherein the head can be observed as black spot through the chorion.
Industry:Agriculture
The linear-lanceolate, flat sessile, and free portion of the monocot leaf.
Industry:Agriculture
