The nutritional status of the coffee tree is influenced by the concentration of nutrients in the soil of the growing area. The objective of this work was to evaluate, using canonical correlation, the linear relationships between chemical attributes of soil and nutrients of leaf t...
Open access
Research Article10.9734/jeai/2019/v35i330208
The objective of the study was to quantify the litter in different genotypes of eucalypts stands at 49-months-old, located in Eldorado do Sul, Rio Grande do Sul, Brazil. Areas of 720 m² were demarcated for each genotype. In each area, 15 samples were randomly collected. The litte...
Open access
Research Article10.9734/jeai/2019/v35i330206
Mechanical impedance to root growth is one of the most important factors determining root elongation and proliferation within a soil profile. Two pot experiments were conducted at the Department of Horticulture, KNUST, Kumasi, Ghana, to determine the impact of subsurface compacti...
Open access
Research Article10.9734/jeai/2019/v35i330207
Cássio Ricardo Gonçalves da Costa, Vânia da Silva Fraga, George Rodrigues Lambais, Kilmer Oliveira Soares, Stella Ribeiro Prazeres Suddarth & Salomão de Sousa Medeiros·Journal of Experimental Agriculture International·2019
The change in the use of the soil causes an imbalance in the ecosystems, altering the chemical and physical properties, which can make their natural recovery unviable. This study aimed to characterize chemically and physically an Entisol under the Caatinga area in a 30 years ecol...
Open access
Research Article10.9734/jeai/2019/v35i230202
Lucas de Arruda Viana, Deborah Campos Tomaz, Rodrigo Nogueira Martins, Jorge Tadeu Fim Rosas, Fernando Ferreira Lima dos Santos & Marcelo Fagundes Portes·Journal of Experimental Agriculture International·2019
The growing human population added to the rural exodus has aggravated the pressure in the agricultural sector for greater production. Faced with this problem, research has developed optical sensors for more productive agriculture with the purpose of minimizing the effects of rura...
Open access
Research Article10.9734/jeai/2019/v35i230203
The aim of the present study was to quantify macronutrient stock in the hybrid Eucalyptus urograndis, for different soil types in Telemaco Borba, Parana, Brazil. Sandy texture (Cambisols Inceptisols), and clayey texture (Ferralsols Oxisols) soils were selected for the study. Base...
Open access
Research Article10.9734/jeai/2019/v35i330204
The homogeneity investigation of a series can be performed through several nonparametric statistical tests, which serve to detect artificial changes or non-homogeneities in climatic variables. The objective of this work was to evaluate two methodologies to verify the homogeneity...
Open access
Research Article10.9734/jeai/2019/v35i330205
Aim: Postemergence timing trials based on weed size were conducted near Lubbock, TX to assess the effectiveness of 2,4-D choline + glyphosate on control of Palmer amaranth (Amaranthus palmeri S. Wats.), Russian-thistle (Salsola tragus L.), and kochia (Kochia scoparia L.) at three...
Open access
Research Article10.9734/jeai/2019/v35i230199
Claudiney do Couto Guimarães, Dione Richer Momolli, Huan Pablo de Souza, Mauro Valdir Schumacher, Aline Aparecida Ludvichak & Angélica Costa Malheiros·Journal of Experimental Agriculture International·2019
The objective of this study was to evaluate the biomass production and to characterize a 7-year-old Eucalyptus benthamii stands in the Pampa-RS Biome. Initially, a sample inventory was performed for the dendrometric characterization of the stand. For the determination of biomass,...
Open access
Research Article10.9734/jeai/2019/v35i230201
This research aims with the help of geotechnologies to map the different uses and coverage of the earth by analyzing its effects in relation to the altitudinal gradient in semiarid regions. In order to do so, RapidEye images were acquired in the year 2014, after the organization...
Open access
Research Article10.9734/jeai/2019/v35i230198