Adding phosphorus in the composition of substrate for seedlings production contributes to a faster growth seedlings, increases resistance biotic and abiotic stresses, also improves efficiency use nutrients water many vegetal species. The objective this research was evaluate vegetative quality Annona squamosa L. propagated by seeds, regarding application single superphosphate enriched sugarcane ...

The root lesion nematode, Pratylenchus brachyurus (Godfrey) Filipjev & Schuurmans Stekhoven, has been caused significant losses in soybean crops Brazil. addition of organic fertilizers may suppress the population these plant-parasitic nematodes. aim this work was to evaluate action cattle manure, vermicompost, compost, and slaughterhouse swine compost on reduction P. development plants (cv....

Plants in the field are exposed to varying light and moisture. Agronomic improvement requires knowledge of whole-plant phenotypes expressed in response to simultaneous variation in these essential resources. Most phenotypes, however, have been described from experiments where resources are varied singularly. To test the importance of varying shoot and root resources for phenotyping studies, sis...

Three controlled water supply treatments were applied to 1-year-old peach trees grown in root observation boxes. The treatments were: I(0), growth medium maintained at 50% field capacity; I(1), water supplied when daily net tree stem diameter change was negative or zero for 1 day; I(3) as for I(1) except that water was applied after net daily stem diameter change was negative or zero for 3 cons...

The objective of the work was to evaluate growth and development razor-blade grass (Paspalum virgatum L.). experimental design a randomized complete block with 17 treatments, evaluations were performed at 20, 27, 34, 41, 48, 55, 62, 69, 76, 83, 90, 97, 104, 111, 118, 125, 132 days after sowing (DAS) five replications, considering as date day seeds placed in plastic boxes. evaluated characterist...

Arabidopsis has inducible responses for tolerance of O2 deficiency. Plants previously exposed to 5% O2 were more tolerant than the controls to hypoxic stress (0.1% O2 for 48 h) in both roots and shoots, but hypoxic acclimation did not improve tolerance to anoxia (0% O2). The acclimation of shoots was not dependent on the roots: increased shoot tolerance was observed when the roots of the plants...

Boron (B) deficiency is commonly found in tropical crops, among which sorghum stands out for its limited yield under B shortage. However, as a micronutrient, the range between adequate and toxic levels narrow, thus fertilization should be cautiously applied. Our goal was to evaluate physiological physical quality, well early performance, of grain seedlings different doses applied via seeds. Tre...

Resource managers are challenged with waste disposal and leachate produced from its degradation. Poplar (Populus spp.) trees offer an opportunity for ecological leachate disposal as an irrigation source for managed tree systems. Our objective was to irrigate Populus trees with municipal solid waste landfill leachate or fertilized well water (control) (N, P, K) during the 2005 and 2006 growing s...

Papaya is a tropical fruit with great appreciation by the population, for production of seedlings, substrates appear as importance development, providing seedling in pattern desired producers. The objective was to evaluate effect organic on emergence and development papaya seedlings cv Formosa “mel”. experiment carried out randomized block design, five treatments four replications. Fifty seeds ...

Mycorrhizal enhancement of drought resistance of two woody plant species, loblolly pine (Pinus taeda L.) and rose (Rosa hybrida L. cv. Ferdy), occurred independently of phosphorus nutrition. Mycorrhizae tended to alter root morphology and carbon allocation patterns of shoots and roots. Increased drought resistance of mycorrhizal plants was in part attributed to drought-induced colonization by m...