ABSTRACT Most sandy soils have low natural fertility and levels of organic matter, making nitrogen (N) fertilization essential. Thus, five doses N were applied (0, 75, 125, 175 225mg dm-³) in a randomized block design to evaluate the effects on morphogenetic, structural production characteristics Brachiaria brizantha cv. Marandu Quartzarenic neosoil. The did not affect height canopy. leaf elong...

Understanding effects of environmental factors on crop phenological development is useful for predicting crop growth stages and scheduling management practices. We evaluated the effect of salinity on the rate of leaf appearance and the duration of critical stages of growth in wheat (Triticum aestivum L.) in terms of both thermal unit (TU; “C day) and phyllochron intervals. Two hard red spring w...

BACKGROUND AND AIMS To improve the management of grass communities, early plant development was compared in three species with contrasting growth forms, a caespitose (Lolium perenne), a rhizomatous (Poa pratensis) and a caespitose-stoloniferous species (Agrostis stolonifera). METHODS Isolated seedlings were grown in a glasshouse without trophic constraints for 37 d (761 degrees Cd). The appea...

Soybean plants growing at day/night temperatures of 30/18, 26/18, and 22/18 C were subjected to a single drying and recovery cycle during an 18- to 19-day period in the early to midpod development stage. Leaf total electrochemical water potential was reduced to about -24 bars during the 4-day drying cycle at all temperatures, but recovered to control levels upon rewatering. The changes in dry m...