Ana Lúcia Hanisch

Parâmetros agronômicos de gramíneas perenes de clima temperado

Introduction of forage cultivars of different countries can be an option for technology short-term transfer for access to vegetative materials for better production potential. The objective of this study was to evaluate cultivars of temperate climate perennial grasses from Uruguay and New Zealand in soil and climatic conditions in Santa Catarina State, during the years 2010 to 2012. Two simultaneous experiments were conducted, in four physiographic regions of the State: West, Midwest, South Plateau and North Plateau. In trial 1 cultivars of Lolium perenne, festulolium and oats perennial and in trial 2 cultivars of Festuca arundinaceae and dactylis were evaluated. There was interaction between cultivars and localization in both trials, during the two years of evaluation. Perennial ryegrass and festulolium significantly reduced dry matter production (DMP) over the period in the West, Midwest and Northern Plateau and it is recommended only for South Plateau region. Perennial oats may be indicated for the two regions Plateau. In trial 2, the fescue cv. Epagri 312 (control) and cv. Aurora stood out in four locations, with average values of 9 and 7 t ha-1 of dry matter, respectively for the first and second periods of evaluation.

EFEITO DE PÓ DE BASALTO NO SOLO E EM CULTURAS ANUAIS DURANTE QUATRO SAFRAS, EM SISTEMA DE PLANTIO DIRETO1

The powder basalt has been used as a source of nutrients in some regions of Brazil. However, there is scarce knowledge about the effects of this product on the soil fertility and crop yield. The objective of this research was to evaluate the effect of powder basalt, combined with the presence or absence of chemical fertilization, on the yield of soybean and corn and on some soil chemical properties. An experiment was conducted in randomized complete block design with three replications and split plot. In the plots five doses of powder basalt were allocated: 0, 2, 4, 8 and 12 ton ha-1, with very fine particle size. In the subplots two fertilization strategies were allocated: with or without chemical fertilization. The following sequence of crops in summer/winter were used: soybean/black oat + common vetch (2009/2010); corn/black oat (2010/2011); soybean/black oat + common vetch (2011/2012 season) and corn (2012/2013). The powder basalt did not affect the productivity of soybeans and corn, with or without chemical fertilization. The powder basalt had little effect on the soil chemical properties