Research graph
References from Trends in maize grain yields in a long-term fertilizer trial. Local targets link to admitted publications; unresolved targets remain external evidence.
The initial and residual value for subterranean clover of phosphorus from Candallite rock phosphates, apatite rock phosphates and superphosphate
10.1007/bf01051629 · 1984 · External reference
Methods of analysis for soils, plants and waters
1961 · External reference
Plant-induced changes in rhizosphere of rape (Brassica napus var. Emerald) seedlings. III. Changes in L value, soil phosphate fractions and phosphatase activity
10.1111/j.1469-8137.1982.tb03291.x · 1982 · External reference
Unresolved reference
1958 · External reference
The Rothamsted long-term experiments: Are they still of use?
10.2134/agronj1991.00021962008300010008x · 1991 · External reference
Long-term experimentation: 150 years of agricultural research
1993 · External reference
Die invloed van bemesting op gewasse wat onder besproeiing verbou is
1948 · External reference
Soil testing as a guide to phosphate fertilization of five legumes in Syria
1988 · External reference
Soil and fertilizer phosphorus and crop responses in the dryland Mediterranean zone
1992 · External reference
Buildup and decline in soil phosphorus: 30-year trends in a Typic Umpraquult
10.2134/agronj1991.00021962008300010019x · 1991 · External reference
Potassium effects on stalk strength, premature death and lodging of maize (Zea mays L.)
10.1080/02571862.1984.10634125 · 1984 · External reference
Overview of long-term agronomic research
10.2134/agronj1991.00021962008300010010x · 1991 · External reference
Sekere neigings in mieliegraanopbrengste in 'n langtermyn bemestingsproef
1972 · External reference
Availability of phosphorus in a calcareous soil treated with rock phosphate or superphosphate as affected by phosphate-dissolving fungi
10.1007/bf02377067 · 1989 · External reference
Chemistry of phosphorus transformations in soil
1991 · External reference
Essais de fertilisation phosphatée en vue d'une amelioration pastorale sur des terres marginales des étages humide et semi-aride de la Tunisie
1983 · External reference
Soil nitrogen mineralization in the presence of surface and incorporated crop residues
10.2134/agronj1990.00021962008200010025x · 1990 · External reference
Unresolved reference
1991 · External reference
Unresolved reference
1990 · External reference
Keys to Soil Taxonomy
1990 · External reference
Unresolved reference
1980 · External reference
Groei, ontwikkeling en waterverbruiks-doeltreffendheid van mielies (Zea mays L.) by verskillende grondvrugbaarheidspeile
1986 · External reference
The dynamics of the soil system under cultivation
1983 · External reference
The influence of plants on the mineralization of nitrogen and the maintenance of organic matter in the soil
10.1017/s0021859600049467 · 1951 · External reference
Die groei en opbrengs van mielies (Zea mays L.) by verskillende peile van bemesting en vogvoorsiening
1974 · External reference
