The largest numbers of the Brazilian traditional upland rice varieties are found in the
Maranhão state, Northeast region of Brazil. However, no information is available on the …

Lithothamnium is a source of organic origin fertilizer that can be used to improve soil
biochemical conditions and the initial development of plants and grain yield. This study …

The expansion of agriculture to new areas in order to increase the competitiveness of coffee
producing countries has resulted in cultivation expanding into regions with lower natural …

The use of cultivars efficient in nutrient use is essential to increase yield and reduce
production costs. The objective of this study was to evaluate absorption and nutrients use …

Studies on nutritional efficiency of phosphorus in conilon coffee plants are important tools to
unravel the high limitation that natural low levels of this nutrient in soil impose to these …

Mineral nutrients play an important role in the composition of seeds, influencing the
germination rate and the production of vigorous seedlings, which is fundamental for the …

Weed competition in southern Brazil is one of the main limiting factors for Oryza sativa
L.(flooded rice) yield. Echinochloa spp.(barnyardgrass) occurs at a high frequency. Although …

Os solos brasileiros são altamente deficientes em nutrientes essenciais ao desenvolvimento
da cultura do arroz, principalmente os solos de cerrado. O arroz é extremamente exigente …

O objetivo deste trabalho foi avaliar a possibilidade de antecipar a amostragem foliar em
arroz de sequeiro, para viabilizar o diagnóstico nutricional em tempo hábil para intervenção …

No Brasil, a disponibilidade de fósforo é um dos fatores que mais limita a produtividade do
arroz de terras altas no sistema de sequeiro. Assim, o conhecimento do desenvolvimento …