Abstract
One hundred ninety two sites of 45 plots each were planted over a two year period throughout Georgia to examine problems associated with establishment and maintenance of vegetation on backslopes along highways. Variables under investigation which are covered in this report are (1) need for topsoil, (2) season of seedling, (3) slope of seedbed, (4) exposure aspect, (5) major plant species, (6) nurse crops, (7) maintenance fertilization, and (8) physiograph zone. Other variables under consideration are (1) rainfall, (2) air temperature, (3) plant canopy temperature, (4) soil temperature, (5) seedling rates, (6) growth regulators, and (7) soil density which will be treated in subsequent reports. Observations during three growing seasons confirm the findings from other states that topsoil is not required for establishment of grass and legumes. Spring planting was better than mid-summer to fall planting. Better plant growth was observed on flatter slopes. Zonation of the state, done under Phase I of this project, continues to be supported by these data. South- and West-facing slopes are the most difficult to vegetate in the northern part of Georgia. Mixed fertilizer at 1,500 pounds per acre was adequate for three seasons growth. Interstate lespedeza was better adapted than Sericea. Two new species--Virgata lespedeza and Brunswickgrass--show promise as roadside plants.
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Claims 9
Claim · model-written summary
Topsoil was not required to establish grass and legumes.
Verbatim
e0“Observations during three growing seasons confirm the findings from other states that topsoil is not required for establishment of grass and legumes.”
Claim · model-written summary
Spring planting performed better than mid-summer to fall planting.
Verbatim
e0“Spring planting was better than mid-summer to fall planting.”
t0“VEGETATION”
Claim · model-written summary
Plant growth was better on flatter slopes.
Verbatim
e0“Better plant growth was observed on flatter slopes.”
Claim · model-written summary
The data continued to support geographic zonation of Georgia.
Verbatim
e0“Zonation of the state, done under Phase I of this project, continues to be supported by these data.”
t0“VEGETATION”
Claim · model-written summary
South and west facing slopes were most difficult to vegetate in northern Georgia.
Verbatim
e0“South- and West-facing slopes are the most difficult to vegetate in the northern part of Georgia.”
t0“VEGETATION”
Claim · model-written summary
Mixed fertilizer at 1,500 pounds per acre was adequate for three seasons of growth.
Not reportedComparatorDirection
Verbatim
e0“Mixed fertilizer at 1,500 pounds per acre was adequate for three seasons growth.”
t0“VEGETATION”
Claim · model-written summary
Interstate lespedeza was better adapted than Sericea.
Verbatim
e0“Interstate lespedeza was better adapted than Sericea.”
Claim · model-written summary
Virgata lespedeza showed promise as a roadside plant.
Verbatim
e0“Two new species--Virgata lespedeza and Brunswickgrass--show promise as roadside plants.”
Claim · model-written summary
Brunswickgrass showed promise as a roadside plant.
Verbatim
e0“Two new species--Virgata lespedeza and Brunswickgrass--show promise as roadside plants.”