1. Boron in soils and crops;Berger;Adv. Agron.,1949
2. Assessment and regulation of the magnesium nutrition of Asparagus officinalis L;Born;Landwirtsch. Forsch.,1982
3. Establishing fertilizer requirements for asparagus through tissue analysis;Brasher,1959
4. Mature asparagus plantings need less fertilizer than is often thought;Carolus;Commercial Grower,1961
5. Boron requirement of asparagus seedlings grown in sand culture;Douglas;Scientia Hortic.,1989