Plant density and Crop Geometry.pptx

These slides are all about Plant density and Crop geometry. According to the definitions and their importance. Also, the factors affecting plant density.

1. Presentation PLANT DENSITY & Plant Geometry Yahye Abdi Essa Abdiasis Abdilahi Adam

2. Plant Density is the number of individuals of a given species that occur within a given sample unit or study area

3. It is most easily interpreted in the case of monospecific stands, where all plants belong to the same species and have germinated at the same time. However, it Plant Density is the number of individual plants present per unit of ground area. could also indicate the number of individual plants found at a given location.

4. ORTANCE OF C.D Plant density manipulates the microenvironment of the field. Plant density affects the absorption and utilization of radiation, water, and nutrients in plants. Affects the growth, development, and yield formation of crops.

5. Factors affecting plant density are grouped into two. FACTORS AFFECTING 1. Genetic factors 2. Environmental fa PLANT DENSITY

6. 1. Genetic Factors The genetic factor is also called internal factor because the basis of plant expression (the gene) is located within the cell. Plant size & shape. Plant nature.

7. 2. Environmental factors A. Abiotic factors Topography lay of the land. Soil Soil is the outermost layer of the surface of the earth in which plants grow. Climate Humidity Aeration Light 1. 2. 3. 4. 5. Temperature Moisture

8. 2. Environmental factors B. Biotic factors Mutualism is a species-to-species interaction in which both the biotic factor and the plant are benefited from the relationship. Herbivory plant-eating organisms called herbivores, such as ruminant animals, rodents (eg. Rats, squirrels), insects, and mollusks feed on plant parts. Parasitism Microorganisms such as fungi, bacteria, and viruses injure crops by causing diseases and are called pathogens.

9. Crop Geometry Crop geometry refers to the shape of the space available for individual plants or The arrangement of the plants in different rows and columns in an area to utilize the natural resources efficiently. It influences crop yield through its influence on light interception, rooting pattern, and moisture extraction pattern.

10. Square planting Square arrangements of plants will be more efficient in the utilization of light, water, and nutrients available.

11. Rectangular planting Sowing the crop with a seed drill, wider inter-row and closer intra-row and closer intra-row spacing leads to rectangularity. The rectangular arrangement facilitates easy inter cultivation. Rectangular planting mainly suits annual crops, crops with closer spacing, etc., and the wider section (row) is given for irrigation, intercultural operation, etc.

12. Triangular planting It is a method to accommodate plant density under perennial/tree crops.

13. Miscellaneous planting Crops are sown with seed drills in two directions to accommodate more number of plants and mainly to reduce weed population.

14. IMPORTANCE OF C.G Maximum utilization of resources Knowledge of plant arrangement. Proper field management. Increase in farm profitability.

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