Zobrazeno 1 - 10
of 14
pro vyhledávání: '"C. O. Plank"'
Autor:
C. O. Plank, R. M. Lippert
Publikováno v:
Journal of Natural Resources and Life Sciences Education. 28:53-56
The Internet is a powerful tool for distance education. When used for extension inservice training, it provides the benefits of lower training costs due to lack of travel requirements and the ability for agents and specialists over a large geographic
Publikováno v:
Communications in Soil Science and Plant Analysis. 21:2319-2332
Zinc toxicity of peanuts (Arachis hypogaea L.), resulting from excessive amounts of Zn applied to previous crops, has been observed for many years in a limited number of peanut fields in Georgia. A tentative critical value of 12 mg/kg of Mehlich No.1
Publikováno v:
Communications in Soil Science and Plant Analysis. 21:1051-1077
Mehlich 3, proposed as the “universal extractant”; for the Eastern U. S., has not been adequately evaluated for the major agricultural soils of the Coastal Plain of Georgia. A greenhouse study was conducted to compare soil P, K, Ca, and Mg extrac
Publikováno v:
Plant and Soil. 42:465-476
Field investigations were initiated in 1971 to study the effect of a weathered fly ash sample on yield and nutrient concentration of corn (Zea mays L.) and on composition of displaced soil solutions, and to determine rates of fly ash that could be ap
Publikováno v:
Canadian Journal of Animal Science. 63:399-408
Twenty-four pigs were individually housed and fed diets containing either 0, 10 or 20% wheat bran. Digestion trials (chromic oxide indicator) were conducted when the pigs had been fed the diets for 14 days (period 1) and again after 80 days (period 2
Publikováno v:
Communications in Soil Science and Plant Analysis. 17:257-273
The absorption and utilization of most elements by plants are strongly influenced by factors other than elemental concentration in the soil solution such as soil pH, organic matter, CEC and interactions with other nutrients. This field study was cond
Autor:
C. O. Plank, D. C. Martens
Publikováno v:
Soil Science Society of America Journal. 38:974-977
Publikováno v:
Journal of Plant Nutrition. 2:683-697
Aluminum toxicity to plants is often responsible for yield reductions under acid soil conditions. Despite the fact that Al becomes insoluble in the slightly acid to neutral pH range, there are indications that it can still be taken up and become toxi
Publikováno v:
Communications in Soil Science and Plant Analysis. 11:297-316
Soil pH has a marked effect on the availability of micronutrients, but information is somewhat limited on soil pH and micronutrient interaction effects on soybeans. A 5‐year study, involving lime and micronutrient treatments, was conducted on a Gre
Publikováno v:
Communications in Soil Science and Plant Analysis. 17:237-256
The Diagnosis and Recommendation Integrated System (DRIS) has proven useful in the interpretation of tissue elemental analyses for many crops, and research was undertaken to apply the same method for foliar diagnosis of soybean (Glycine max [L.] Merr