Corn grain yield is very responsive do Zn in Brazilian soils. A greenhouse experiment was conducted in the Crop Science Department of the Botucatu College of Agricultural Sciences to compare sources of Zn and their application ...

The phosphorus supply to crops in tropical soils is deficient due to its somewhat insoluble nature in soil, and addition of P fertilizers has been necessary to achieve high yields. The objective of this study was to examine ...

A field experiment was carried out to study the effects of potassium fertilization and time of harvesting on canola seed yield. The soil was a Red-Yellow Latosol (Hapludox), and the experimental design was a subplot ...

Root growth impairment has sometimes been attributed to zinc deficiency. A greenhouse experiment was conducted in Botucatu, SP, Brazil, in 1997/98, using 2.5 L pots. Zinc redistribution within the plant and the effect of ...

Manganese toxicity may be a major constraint to cotton production in the states of São Paulo and Paraná and Mn deficiency may be a problem in the cerrado areas of Brazil. The objective of this experiment was to study the ...

Soil compaction has been a very common problem on the fields, affecting growth and yield of the crops as well as soil and water conservation. In order to study this problem, five winter green manure species (Vicia sativa; ...

Phosphorus fixation in tropical soils may decrease under no-till. In this case, P fertilizer could be surface-spread, which would improve farm operations by decreasing the time spend in reloading the planter with fertilizers. ...

Guar (Cyamopsis tetragonoloba L.) is commonly grown in arid lands, because of its high drought-tolerance. However, soil compaction may be a limiting factor to its growth. This study aimed to evaluate the guar growth, ...