An experimental procedure for obtaining input parameters for the “ROOTMAP” root simulation program for peas (Pisum sativum L.) Tezera TsegayeC. E. MullinsA. J. Diggle Research Article Pages: 1 - 16
Physical properties of two-component growth media based on Sphagnum peat and their implications for plant-available water and aeration J. Heiskanen Research Article Pages: 45 - 54
Early season root production and zoospore infection of cultivars of flue-cured tobacco that differ in level of partial resistance to Phytophthora parasitica var. nicotianae K. J. JonesH. D. Shew Research Article Pages: 55 - 61
A comparison of four methods for measuring roots of field crops in three contrasting soils M. KückeH. SchmidA. Spiess Research Article Pages: 63 - 71
Effect of nitrogen on drought strain and nutrient uptake in Norway spruce Picea abies (L.) Karst.) trees Petter Nilsen Research Article Pages: 73 - 85
Effects of calcium deficiency on Coffea arabica. Nutrient changes and correlation of calcium levels with some photosynthetic parameters José C. RamalhoM. C. RebeloM. Antonieta Nunes Research Article Pages: 87 - 96
Collection and composition of xylem sap and root structure in two halophytic species W. Dieter JeschkeSabine KlaggesA. Saeed Bhatti Research Article Pages: 97 - 106
Nitrogen transformations in limed and nitrogen fertilized soil in Norway spruce stands Aino SmolanderVeikko KitunenEino Mälkönen Research Article Pages: 107 - 115
Barley genotypes differ in activity of soluble extracellular phosphatase and depletion of organic phosphorus in the rhizosphere soil Farouq AsmarTara SinghNiels Erik Nielsen Research Article Pages: 117 - 122
The role of mungbean residues and Sesbania aculeata green manure in the nitrogen economy of rice-wheat cropping system S. N. SharmaR. PrasadS. Singh Research Article Pages: 123 - 129
Effects of defoliation on seed protein concentration in normal and high protein lines of soybean J. W. BurtonD. W. IsraelT. E. Carter Research Article Pages: 131 - 139
Water balance of conifer logs in early stages of decomposition Mark E. HarmonJay Sexton Research Article Pages: 141 - 152
Mineralization of nitrogen in long-term pasture soils: effects of management K. GillS. C. JarvisD. J. Hatch Research Article Pages: 153 - 162
Improved correlation between soil exchangeable K and plant K contents on a tissue water basis G. SpringobM. LebertH. Graf von Reichenbach Short Communication Pages: 163 - 165