Eric B. Brennan

4 Questions 13 Answers 0 Followers

Questions related from Eric B. Brennan

What are examples of studies where different soil types have been evaluated in a common-garden experimental design?

Common-garden experiments (sometimes called transplant experiments) can help scientist understand the effect of a common environment on a given factor. Several years ago I recall reading a study...

09 June 2017 3,786 7 View

What are some good studies showing that the abundance of food resources for beneficial insects do not always increase biocontrol of target pest?

Biological control of insect pests like aphids in vegetable production is widely used in organic production systems in the Salinas Valley of California where I enjoy working. In these systems, we...

14 February 2016 5,854 5 View

How much annual organic matter input is needed to maintain soil organic matter?

I am interested to know roughly how much crop residue input is needed to maintain soil organic matter in a tillage-intensive system. Previous studies listed below have indicated that...

28 January 2015 1,818 7 View

Are legume-cereal cover mixtures a good fit (i.e. well suited) for organic vegetable production?

Legume-cereal cover crop mixes are often promoted because they combine the ability of legumes to add atmospheric nitrogen to the system through biological fixation in root nodules, and the ability...

20 December 2014 6,122 14 View