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Full-Text Articles in Life Sciences

Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck Dec 1997

Tb167: Management And Winter Hardiness Of Hairy Vetch In Maine, Jean-Luc Jannink, Laura C. Merrick, Matt Liebman, Elizabeth A. Dyck

Technical Bulletins

The research presented here describes a set of three different experiments that sought to establish appropriate management practices for hairy vetch in Maine, and to determine whether variability for winter hardiness exists among germplasm available commercially or from gene banks. Specific objectives of the first experiment were to evaluate effects of planting date and companion crop on crop and weed dry weight and total above-ground N content, at two sites differing in drainage. In a second experiment, the winter hardiness of hairy vetch from six commercial sources and the effect of a rye companion crop on hardiness were evaluated. In …


Tb163: Insect Predation Of Seeds And Plant Population Dynamics, Jianxin Zhang, Francis A. Drummond, Matt Liebman, Alden Hartke Feb 1997

Tb163: Insect Predation Of Seeds And Plant Population Dynamics, Jianxin Zhang, Francis A. Drummond, Matt Liebman, Alden Hartke

Technical Bulletins

This review provides a framework for understanding the mechanisms of insect seed predation, the diversity of insects that prey on seeds, and the ecological and evolutionary consequences of insect seed predation. Insect seed predation can play significant roles in reducing plant population growth, modifying intraspecific and interspecific competition, shifting spatial and temporal distribution, affecting species evolution, and plant community structure, both in natural and agricultural ecosystems.