PASTURE SELECTION

- Shadreck Mwimanzi
- 29 Sep, 2024
Selecting the right pasture to grow is key for both grazing
and silage production. Consider these factors before you venture into pasture
production:
a) Climate
Choose pasture
species suited to local rainfall, temperature, and humidity.
b) Soil Type
The soil should be fertile and well-drained for optimal
growth.
c) Species Selection
Grasses like alfalfa, clover, ryegrass, and bromegrass are
common choices for silage. Legumes often add more protein to the feed.
1. Planting and
Harvesting
Planting
Preparation
Prepare the soil by testing pH and adding appropriate
fertilizers. Aim for a pH of 6.0–7.0 for most grasses.
Seeding
Plant seeds at the right depth and time of year. Cool-season
grasses are planted in early spring or fall, while warm-season grasses are
better planted in late spring.
Spacing
Proper seed spacing helps avoid overcrowding and ensures
healthy plant growth.
2. Harvesting:
Timing: Harvesting for silage should occur at the right
growth stage—usually before the plants fully mature. The optimal moisture
content is around 60-70% for silage.
Cutting: Use sharp blades to minimize damage to plants.
Cutting height depends on species, but typically, leave 3-5 cm of stubble to
encourage regrowth.
Wilt: After cutting, wilt the grass for a few hours to
reduce moisture content slightly.
3. Silage Making
Silage is made by fermenting freshly cut forage under
anaerobic conditions.
Steps:
1. Cutting and Wilting: The grass should be cut when it's
mature but still has high nutritional value. Wilt it to about 60-70% moisture
content.
2. Chopping: Chop the forage to small pieces (2-3 cm) for
easy packing.
3. Filling Silo: Fill the silo (trench, pit, tower, or
plastic bag) as quickly as possible to prevent spoilage. Compact the forage to
remove as much air as possible.
4. Sealing: Cover the silo with airtight material (plastic
sheets). Weigh down the cover to prevent air from entering.
5. Fermentation: Allow the forage to ferment for 2-3 weeks.
Good silage will smell sweet, indicating successful lactic acid fermentation.
Storage and
Management
Silo Types: Silos can be vertical (tower), horizontal
(trench or bunker), or plastic silage bags. The type depends on farm size and
available resources.
Monitoring: Check regularly for leaks or air pockets to
prevent spoilage. Silage should remain covered to maintain quality.
Feeding: Once opened, remove silage in thin layers to
prevent exposure to air. Feed fresh silage daily, especially in warm climates.
Storage Life: Properly fermented silage can last for up to
12 months or more if stored well.
Management Tips:
Regularly monitor the silo to ensure it's airtight and free
from pests.
Rotate feeding to minimize waste.
Store silage in a cool, dry place to maintain quality.
Proper pasture management and silage making ensure
high-quality feed, improving livestock productivity
throughout the year.
Grazing vs. Silage
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