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Organic & Integrated Tree Fruit Production

Friday, September 21, 2018

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2673. Holter, V.. 1978. Nitrogen fixation of four legumes in relation to above-ground biomass, root biomass, nodule number, and water content of the soil.. Oikos 31:230-235.
The study attempted to determine which plant characteristic was best correlated to acetylene reduction, and at what drought point it would stop. Four legumes were compared: vetch, red clover, -- clover, and black medic. All showed a drop in acetylene reduction around 8% water content on a clay soil. The correlation of various plant parameters with acetylene reduction was poor.

8897. Kroontje, W. and W.R. Kehr. 1956. Legume top and root yields in the year of seeding and subsequent barley yield.. Agronomy J. 48:127-131.
No significant difference in forage and root yields were measured among 6 alfalfa varieties and between hardy and non-hardy varieties. Forage production of Hubam and Madrid sweetclovers was equal. Barley yields following alfalfas and Hubam sweetclover were similar. Madrid depressed barley yields. Barley yield after vetches was superior to all other legumes. Contains good tables on root and top partitions under different cutting regimes.

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