อันงง พอ ตัวเลย ครับ
Horticulture vastly growing industry
Great reliance on container-growth plants
Ability to start/grow plants in favorable conditions
Match plant preferences to potting media
Greater ability to manipulate climate, fertility, water etc.
2 ศัพท์ ทางเกษตรผมไม่แน่นใจเท่าไร
Root Media
Soilless culture can yield much higher per acre than soil culture –not realistic
Expensive
Difficult to manage
More consistent aeration, water retention
Important Properties of Root Media
Stable organic matter or low C:N
Water retention w/ adequate aeration
Moderate/high CEC
Suitable pH
Stable organic matter
Moderately decomposed – don’t want it to shrink too much decreasing aeration
Greenhouse media tends has little natural fertility, needs ability to retain nutrients
Components of Root Media Mixes
Peat moss
Decompose slowly
High water-holding capacity
Can be acidic
Bark ผม แปลได้ว่าเห่า ผมนี้งงเลย
Can replace peat moss
Less expensive
Should be composted
Sawdust, straw, manures
Sawdust & straw should be composted 1-2 mos.
Manures
Used little due to ammonium toxicity
Can be good in certain situations
Vermiculite เข้าทางวิทละ
Silicate material
High water holding capacity
Great aeration
High CEC, w/ some K, Ca, Mg
Sand
Best drainage & aeration
No CEC or nutrient availability
May work for starting plants
Perlite
Heated volcanic rock
Sterile & inert
Good substitute for sand
Root Media Mixes
Soil-Based Root Media
1/3 sand, 1/3 peat moss, 1/3 soil
Keep clay content low
Can make at home/lab w/ ability to sterilize soil
Soilless Root Media
Materials to use
Vermiculite, organic matter, sand, perlite, sphagnum peat moss
Can mix yourself, or buy premixed
Pay close attention to fertility management
Pasteurization of Media
Pasteurization controls
Weed seeds, pathogens, insects, nematodes
Steam pasteurization
Most used
Pump steam through soil mixture to kill most pathogens
Chemical pasteurization
Cheaper
Must allow to aerate after treatment
Chemicals are nasty to handle
Methyl bromide
Severely injurious to humans
Can be damaging to some plants
Chloropicrin (tear gas)
Can’t use where plants are growing
ยากมาครับ กับประโยคโดย รวม ทั้งหมด อะครับ แปลแล้วมัน ยังไงๆ ไม่รู้ ฝากผู้รู้ช่วยด้วยนะครับ เยอะเลย
Horticulture vastly growing industry
Great reliance on container-growth plants
Ability to start/grow plants in favorable conditions
Match plant preferences to potting media
Greater ability to manipulate climate, fertility, water etc.
2 ศัพท์ ทางเกษตรผมไม่แน่นใจเท่าไร
Root Media
Soilless culture can yield much higher per acre than soil culture –not realistic
Expensive
Difficult to manage
More consistent aeration, water retention
Important Properties of Root Media
Stable organic matter or low C:N
Water retention w/ adequate aeration
Moderate/high CEC
Suitable pH
Stable organic matter
Moderately decomposed – don’t want it to shrink too much decreasing aeration
Greenhouse media tends has little natural fertility, needs ability to retain nutrients
Components of Root Media Mixes
Peat moss
Decompose slowly
High water-holding capacity
Can be acidic
Bark ผม แปลได้ว่าเห่า ผมนี้งงเลย
Can replace peat moss
Less expensive
Should be composted
Sawdust, straw, manures
Sawdust & straw should be composted 1-2 mos.
Manures
Used little due to ammonium toxicity
Can be good in certain situations
Vermiculite เข้าทางวิทละ
Silicate material
High water holding capacity
Great aeration
High CEC, w/ some K, Ca, Mg
Sand
Best drainage & aeration
No CEC or nutrient availability
May work for starting plants
Perlite
Heated volcanic rock
Sterile & inert
Good substitute for sand
Root Media Mixes
Soil-Based Root Media
1/3 sand, 1/3 peat moss, 1/3 soil
Keep clay content low
Can make at home/lab w/ ability to sterilize soil
Soilless Root Media
Materials to use
Vermiculite, organic matter, sand, perlite, sphagnum peat moss
Can mix yourself, or buy premixed
Pay close attention to fertility management
Pasteurization of Media
Pasteurization controls
Weed seeds, pathogens, insects, nematodes
Steam pasteurization
Most used
Pump steam through soil mixture to kill most pathogens
Chemical pasteurization
Cheaper
Must allow to aerate after treatment
Chemicals are nasty to handle
Methyl bromide
Severely injurious to humans
Can be damaging to some plants
Chloropicrin (tear gas)
Can’t use where plants are growing