Now showing items 1-10 of 1065
Soil quality and agricultural sustainability in the Brazilian Cerrado.
(In: WORLD CONGRESS OF SOIL SCIENCE, 16., 1998, Montpellier. Proceedings. Montpellier: CIRAD, 1998., 1998)
Comparative procedures for the sample decomposition of rocks used in organic agriculture and the determination of Cu, Fe, Mn, and Zn by FAAS
(Perkin-elmer Corp, 2004-11-01)
The aim of this work was to develop an appropriate sample preparation procedure for the flame atomic absorption spectrometry determination of Cu, Fe, Mn, and, Zn in rocks used in organic agriculture as a source of macro- ...
Evaluation of the nitrate content in leaf vegetables produced through different agricultural systems
(Taylor & Francis LtdAbingdonInglaterra, 2005)
Test procedure for variable rate fertilizer on coffee
(UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO, 2010)
The objective was to develop and test a procedure for applying variable rates of fertilizers and evaluate yield response in coffee (Coffea arabica L.) with regard to the application of phosphorus and potassium. The work ...
Extraction of cellulose nanowhiskers from natural fibers and agricultural byproducts
In this work the feasibility of extracting cellulose from cotton, sisal and flax fibers, corn stover and rice husk by means of usual chemical procedures such as acid hydrolysis, chlorination, alkaline extraction, and ...
PRACTICAL LAND GRADING BASED ON LEAST SQUARES.
Practical methods for land grading design of a plane surface for rectangular and irregularly shaped fields based on a least squares analysis are presented. The least squares procedure leads to a system of three linear ...
Impacts of agricultural activities in remaining forest: Campinas/SP, Brazil
Forest fragmentation occurs normally in an area around the city or with high agricultural influence, such as the Forest of Quilombo that lies in Metropolitan Campinas/SP- Brazil. This forest is one such example since it ...
Current Trends in Agricultural Information Services for Farmers in Trinidad and Tobago/Caribbean
At present, farmers in the Caribbean are at the dictates and vagaries of the various trade agreements and government policies. Limited by colonisation and geographic location, in order to survive from an economic standpoint, ...
TOTAL AND ORGANIC PHOSPHORUS IN CHILEAN VOLCANIC SOILS
(Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, 2003)