Copaifera officinalis, the diesel tree, is known for massive production of oleoresin, mainly composed of sesquiterpene hydrocarbons. In this study, composition of these sesquiterpenes and their concentrations in leaves, stems and roots of C. officinalis at two developmental stages, including the three-week old (TW) seedlings and two-year old (TY) trees, were determined. The leaves of TW seedlin...

Eight hardwood species were grown in fumigated soil without vesicular-arbuscular mycorrhizae (VAM) or in soil infested with a mixture of Glomus mosseae and Glomus etunicatus. Three fertilizer treatments of 140, 560, and 1,120 kg/ha of 10-10-10 fertilizer were established in combination with the two mycorrhizal treatments. Ten equal applications of NH4NO3, totaling 1,680 kg/ha, were added to all...

After a soil fertility baseline had been'determined for the Georgia Forestry Commission's (GFC) Morgan Nursery, a single nursery protocol consistently produced high quality oak seedlings. The fertility baseline developed at the Institute of Tree Root Biology (ITRB) Whitehall Experimental Nursery and adjusted for three GFC nurseries has a background target level at CA, K, P, Mg, Cu. Zn, and B of...

Water shortage is one of the most important environmental stresses in Mediterranean regions. Poor seedling quality may account for the failure of oak regeneration. To determine the best seed origin of Quercus brantii, we investigated on seedlings collected from 20 mother trees in the Zagros Mountain forests 700 to 2200 m altitudes above sea level. Seedlings from different altitudes were irrig...

the effects of natural zeolite as a bed medium in increasing lettuce and red tilapia growth as well as improvement of water quality parameters in an aquaponic system were investigated. an experiment with a completely randomized design was run with two treatments in triplicates, 1) an aquaponic system without use of zeolite as a control group and 2) use of a small cotton bag, containing 10 g zeo...

Transplant stress limits establishment of newly planted seedlings in semiarid Mediterranean regions, which are characterized by very low precipitation and poor fertility soils. Nursery cultural regimes which influence stock quality, as well as silvicultural treatments applied at outplanting may affect the capacity of seedlings to establish successfully. We examined the influence of nursery mine...

Cucumbers productivity and fruit quality depend on seedlings’ quality. The success of seedling cultivation largely depends the choice a suitable substrate. Therefore aim this research is to determine effect peat-vermicompost substrates cucumber crop yield. was carried out in greenhouse covered with double polymeric film Institute Horticulture, Lithuanian Research Centre for Agriculture Forestry...

The aim of this research was to evaluate the quality and photosynthetic metabolism of "uvaia" seedlings (Eugenia pyriformis Cambess.) on different substrates and water regimes. The seeds were sown in tubes of 50 x 190 mm in the following substrates: Sand (S), Latosol + Sand (L + S) (1:1), Latosol + Sand + Semi Decomposed Poultry Litter (L + S1 + PL) ( 1:1:0.5), Latosol + Sand + Semi Decomposed ...