Determining the Need to Fertilize Landscape Trees and Shrubs

Most Nebraska soils are fertile enough to support tree and shrub growth without applying fertilizer. However, when woody plants exhibit poor growth or reduced vigor, yet have had adequate moisture and are not experiencing pest problems or other environmental limitations, the proper application of fertilizer may be necessary

The Ground-water problem in Oregon

Published June 1937. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

Stabilization of Peat Soil by Using Effective Microorganism (EM)

Peat soil is one of the most soft soils ever exist around the world and classified as highly organic. Peat are well known for their high compressibility, natural moisture content, low shear strength and long term settlement. The aim of this study is to obtain the stabilized peat soils by using the Effective Microorganisms (EM). The volume of EM added and mixed with peat soils varied with 2%, 4%, 6%, 8% and 10% and then were cured for 7, 14 and 21 days after being compacted in the PVC mould with 5 blows for each layer for 3 layers. The experiment was done for uncontrolled and controlled moisture content which means that the uncontrolled moisture content does not have specific moisture content for the samples compared to controlled moisture content that have 50% of moisture content

A framework for modelling soil structure dynamics induced by biological activity

Acknowledgments: This work was funded by the Swedish Research Council for Sustainable Development (FORMAS) in the project “Soil structure and soil degradation: improved model tools to meet sustainable development goals under climate and land use change” (grant no. 2018-02319). We would also like to thank Mikael Sasha Dooha for carrying out the measurements for the water retention curves shown in figure 4.Peer reviewedPublisher PD

Strawberry root-rot and a plan of crop rotation for its control

Published October 1946. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

Методи управління екологічними ризиками в системі забезпечення економічного розвитку регіону

Метою статті є дослідження методів управління екологічними ризиками в системі забезпечення економічного розвитку регіону