Las raíces finas (≤ 2 mm de diámetro) en los árboles son vida corta, condiciones sequía y baja fertilidad éstas alcanzan mayor longitud por unidad volumen suelo; así, la densidad es una variable que indica el potencial absorción agua nutrientes tiene árbol. El objetivo del presente estudio fue estimar (DLRF) su distribución profundidad distancia base árbol teca, efecto fertilización sintética a...

Decomposition processes and mineralization are essential to determine the time deploy manage species in consortia or rotations. The aim of this article was study dynamics biomass decomposition release macronutrients plant residues Fabacea. used were: jack bean (Canavalia ensiformis), pigeon pea (Cajanus cajan), dwarf mucuna (Mucuna deeringiana) sunn hemp (Crotalaria juncea). experiment conducte...

Crop rotation is a common means of reducing pathogen populations in soil. Several rotation crops have been shown to reduce soybean cyst nematode (Heterodera glycines) populations, but a comprehensive study of the optimal crops is needed. A greenhouse study was conducted to determine the effect of growth and decomposition of 46 crops on population density of H. glycines. Crops were sown in soil ...

Combinations of winter and fall cover crops were evalu­ ated for the management of plant-parasitic nematodes. The winter cover crops examined were rye (Secale cereale) and narrow-leafed lupin (Lupinus angustifolius) and the fall cover crops were soybean (Glycine max), cowpea (Vigna unguiculata), sorghum-sudangrass (Sor­ ghum bicolor x S. sudanense), sun hemp (Crotalaria juncea), and corn (Zea m...

As leguminosas podem ser eficientes para aumentar os teores de carbono (C) e nitrogênio (N) no solo. Com base nisso, objetivou-se com o presente estudo selecionar plantas maior potencial acumular C N O experimento foi conduzido em 2018, Redenção, Ceará. delineamento experimental adotado blocos casualizados, oito tratamentos três repetições. Os correspondem a: controle (solo sem cobertura vegeta...

Establishment of symbiosis between certain host plants and nitrogen-fixing bacteria ("rhizobia") depends on type 3 effector proteins secreted via the bacterial type 3 secretion system (T3SS). Here, we report that the open reading frame y4zC of strain NGR234 encodes a novel rhizobial type 3 effector, termed NopT (for nodulation outer protein T). Analysis of secreted proteins from NGR234 and T3SS...

The objective of this study was to evaluate the agronomic characteristics of sugarcane as a function of the no-tillage system (NTS) compared to the conventional one (CS) with, and without, manuring. The experimental design was completely randomized, using four repetitions, in a factorial scheme 4 x 2. The treatments were: sugarcane NTS on sunnhemp (Crotalaria juncea); sugarcane NTS on jack bean...