Volume 13, Number 4 Search All Journals Search for: Back to Issue The performance of sugar beet selections made for purity and chloride at three levels of nitrogen fertility … View Article PDF Back to Issue Post navigation Resistance to the sugar beet nematode (Heterodera schachtii) in F tetraploid hybrids between Beta vulgaris and Beta patellarisOn the nature of hatching of Heterodera Schachtii. II. Natural sources of hatching stimulants