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Effects Of Intensive N-K Fertilization On Exchangeable Ca And K In A Soil Profile, R. A. Allured, Lyell F. Thompson
Effects Of Intensive N-K Fertilization On Exchangeable Ca And K In A Soil Profile, R. A. Allured, Lyell F. Thompson
Journal of the Arkansas Academy of Science
Over a 4-yr period fertilizers having three N and five K levels in a factorial arrangement were applied in a replicated, randomized complete block design to coastal bermudagrass (Cynodon dactylon L.) growing on a Pembroke silt loam just north of Fayetteville. In the spring of the fifth year (1972) soil samples were taken from a 3.67-m profile of each plot. Nine depth samples from the profile of each plot were analyzed for exchangeable K and Ca. Potassium fertilizer, especially at the higher rates, and where no N was applied, greatly increased exchangeable K levels only in the top 45 cm …
Observation On Natural Outcropping In The Tomato (Lycopersicon Esculentum L.) In Northwest Arkansas, Alvin F. Reeves
Observation On Natural Outcropping In The Tomato (Lycopersicon Esculentum L.) In Northwest Arkansas, Alvin F. Reeves
Journal of the Arkansas Academy of Science
A single tomato plant homozygous for the recessive anthocyaninless mutant, ae, was grown in the middle of an experimental tomato plot at the University of Arkansas Agronomy Experimental Station Farm in Fayetteville. Progeny tests of seeds harvested from this plant indicated that only 0.7% of the seeds were the result of outcrossing to other plants
Natural Areas And Reference Collections For Environmental Education In Some Arkansas Schools, Jewel E. Moore
Natural Areas And Reference Collections For Environmental Education In Some Arkansas Schools, Jewel E. Moore
Journal of the Arkansas Academy of Science
A survey of 20 school campuses throughout Arkansas showed that most lack natural areas for outdoor environmental education. For most Arkansas schools no checklists of local plants are available, and there are no reference collections at the schools. Projects are underway at State College of Arkansas to establish herberia for the woody plants of Arkansas and the vascular plants of Faulkner County.
Extractable Nutrients And Ph Values From Nine Soil Associations Of Arkansas, A. W. Tennille
Extractable Nutrients And Ph Values From Nine Soil Associations Of Arkansas, A. W. Tennille
Journal of the Arkansas Academy of Science
Soil samples from the 0-10-cm and 10-20-cm depths were obtained from nine of the 11 soli associations of Arkansas. Sites sampled had a heavy forest cover and showed no evidence of cultivation. Routine soil tests showed that pH values ranged from a low of 4.38 for the Loessial Hills to 5.83 in the Ozark Highlands. Potassium ranged from 69 to 206 kg/ha. Phosphorus was very low in nearly all sites; the extremes were 9 and 83 kg/ha, but most values were less than 30 kg/ha. Calcium ranged from 122 to 1,523 kg/ha. The data indicate that when woodland areas are …