In North China, the high-quality pear cultivar “Huangguan” (Pyrus bretschneideri Rehd. cv), which is grafted onto dwarf quince A (Cydonia oblonga Mill. cv) rootstock and grown in calcareous soil, experiences severe iron (Fe) deficiency; this deficiency greatly constrains tree growth as well fruit yield quality. Therefore, we evaluated effects of six practices for alleviating chlorosis caused by...

Phytopathological examination of orchards various forms ownership reveal that every year the rust pip fruit trees has become widespread and reached its epiphytosis. In 2008, we detected symptoms on in form single yellow spots pear leaves different ages ownership. The identifcation found fungus Gymnosporangium sabinae G. Winter, (1882) (syn. fuscum DC. (1805)) was causative agent rust. prevalenc...

Purpose. To analyse the taxonomic composition of subtropical plants Khorol Botanical Garden collection. Results. Taxonomic collection, consisting 25 species: Actinidia chinensis Planch., Asimina triloba (L.) Dunal, Camellia sinensis Kuntze, Chaenomeles ×californica Clarke ex Weber, Citrus trifoliata L., Cormus domestica Crataegus azarolus opaca Hooker & Arn., Cydonia oblonga Mill., Diospyro...