This study aimed to assess the nutritional status of soybean and wheat relationship with grain yield biometric components after lime phosphogypsum (GY) reapplication. Treatments consisted two application methods, surface liming incorporated liming, different levels base saturation (BS) (44, 70, 90%), in addition 70% BS associated a standard dose (70GY1) or double (70GY2) GY. were applied 2012 reapplied 2016. The results refer 2018/2019 season 2019 season. Lime + GY treatment increased leaf...

Nanofertilizers are increasingly explored for sustainable micronutrient delivery in agriculture. Pre-treating seeds with nanofertilizers prior to planting (i.e., seed priming) reduces concerns about nanoparticle (NP) fertilizer non-target dispersion; however, priming formulations and concentrations must be carefully selected avoid germination inhibition toxicity. Here we investigate changes corn seedling development after ZnO NPs, bulk ZnCl2. To evaluate the effects sterile were immersed...

Context In no-tillage agriculture, maintenance of soil cover combined with liming without incorporation increases nitrogen (N) loss via ammonia (NH3) volatilisation, decreasing the efficiency fertilisers. Aims To quantify N losses by NH3 volatilisation from conventional and enhanced fertilisers applied to a clayey sandy loam subjected or not lime (CaCO3) application straw mulching. Methods Two laboratory experiments were carried out; one using soil, other soil. Both followed 4 × 2 factorial...

Objective: The objective of the research was to analyze contributions biotechnology waste management, investigating most widely used biotechnological techniques, their benefits, challenges and potential for innovation in transforming into resources. Methodology: adopted a descriptive practical approach, with semi-structured interviews conducted 12 professionals field management. sample selected based on participants' experience performance sectors related topic. Data collection carried out...

Oxisols ( Latossolos ) are widely distributed in tropical zones and generally characterized by high levels of surface subsurface acidity. In Brazil, most managed under no-till conditions with application acidity amendments. This study aimed to evaluate lime strategies (incorporated surface) for achieving the desired soil base saturation (BS%) (44, 60, 70, 90 %) effect phosphogypsum + on chemical properties as well wheat [...]

This research evaluates the synthesis and characterization of nanometric-sized metallic particles with potential application as support materials for supplying nutrients to plants. Nanoscale Zn, Mn, Fe, Cu oxides were synthesized using microwave-assisted synthesis. Nanoparticles (NPs) characterized Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), specific surface area (SSA), total chemical...

The development of new fertilizer technologies to reduce nitrogen (N) losses from an agricultural system and increase use efficiency (NUE) is a global research objective. Controlled-release fertilizers have shown great potential for reducing N synchronizing release according crop demand, thereby improving the NUE. objective this study was characterize controlled-release compare them with conventional sources in terms release, loss via NH3 volatilization, [...]

Brazil is currently the leading country in no-till (NT) farming, particularly on Ferralsols (Latossolos), most abundant soil type. These soils are characterized by subsurface acidity that cannot be effectively corrected surface application of additives. In this situation, use phosphogypsum can advantageous. This study aimed to assess residual effects lime and a clayey Ferralsol, four soybean two wheat yields southern Brazil. The area has been cultivated under [...]

A compreensão e a quantificação do impacto dos sistemas de uso manejo nos teores C orgânico solo (COS) em propriedades físicas são fundamentais para o desenvolvimento agrícolas sustentáveis. O objetivo deste trabalho foi avaliar alterações alguns atributos físicos COS um Latossolo Vermelho da região noroeste Paraná sob diferentes manejo: mata nativa, pastagem as culturas mandioca cana-de-açúcar. Foram coletadas amostras deformadas determinação textura, densidade partículas, ensaio Proctor...

This research investigated the efficiency and residual effects of two solid organomineral fertilizers on corn ( Zea mays L.) shoot dry matter (SDM), P uptake, recovery index, use accumulated SDM (ASDM), total uptake. was a greenhouse pot study where organomineral‐granulated (OG) fertilizer, organomineral‐pelletized (OM) inorganic fertilizer mix (MM) were tested Eutropherric Red Latossol clay soil (Oxisol). Phosphorus (P) rates 0, 25, 50, 100, 200 mg kg −1 . Two plants grown in each for 35 d...

Aluminum (Al) toxicity is one of the most limiting factors for productivity. This research was carried out to assess influence Al nutrient solution on plant height, dry weight and morphoanatomical alterations in corn (Zea mays L.) roots leaves. The experiment conducted a greenhouse with five treatments consisting doses (0, 25, 75, 150, 300 µmol L-1) six replications. solutions were constantly aerated, pH initially adjusted 4.3. shoot matter, root matter height decreased significantly...

The objective of the study was to evaluate effect foliar application urea and urea-formaldehyde, triazone-based fertilizers on soybean corn crops. Four experiments were carried out, two soybeans, one first season corn, other second corn. conducted using a randomized block design, with 5 treatments studied: T1—control without nitrogen (N); T2—foliar conventional solution three Hexion based urea-formaldehyde triazone (N-Hexion®), varying levels N slow-release components; T3—Hexion 1; T4—Hexion...

Novel fertilizer stabilization technologies are needed to decrease ammonia (NH3-N) losses and increase nitrogen use efficiency. Duromide + NBPT is a new technology that combines two molecules, NBPT, whose propose the efficiency of urease inhibitor in reducing NH3-N loss from urea. Preliminary results showed can be more effective product than just particularly under low soil pH high-temperature conditions. This study aimed compare effects [...]

Knowing the nutrient removal by soybean grain harvest in different varieties, locations, and over time is essential to correctly adjust agronomic recommendations, update farmers’ practices, increase use efficiency. A field-based research trial was carried out assess macronutrients [nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), calcium (Ca), sulfur (S)] removed modern varieties from southern Brazil introduced between 2007 2016. We examined changes our set of a dataset...

Improvements in nitrogen use efficiency (NUE) corn production systems are necessary, to decrease the economic and environmental losses caused by loss of ammonia volatilization (NH3-N). The objective was study different (N) fertilizer technologies through characterization N sources, NH3-N losses, their effects on nutrient concentration yield grown clayey sandy soils south Brazil. treatments consisted a control without application as topdressing, three conventional sources (urea, ammonium...

The yield gain of soybean inoculated with Bradyrhizobium spp. or co-inoculated and Azospirillum brasilense is variable. Inoculants can be applied in the sowing furrow via seed treatment. There a gap our understanding efficacy different inoculation methods. This study aimed to assess agronomic efficiency A. by was conducted Paraná State, Brazil, two seasons. Five treatments were tested: control; treatment (SBr), + (SBr+Az), in-furrow (FBr), (FBr+Az). Shoot dry weight, grain nitrogen content...

Brazilian soybean producers commonly apply maintenance potassium (K) fertilization during cultivation to restore the K taken up by plants; however, this measure can modify morphophysiological plant characteristics, since functions of are closely related with growth and development. This study assessed morphological changes in plants response rates, sowing fertilization, application periods a Latossolo Vermelho eutroférrico (Oxisol) under no-tillage system, located municipality Floresta,...

Maghemite (g-Fe2O3) is the most usually found ferrimagnetic oxide in red basalt-derived soils. The variable degrees of ionic substitution Fe3+ for different metals (e.g. Ti4+, Al3+, Mg2+, Zn2+, and Mn2+) non-metals maghemite structure influence some cristallochemical features this iron oxide. In study, synthetic Zn-substituted maghemites were prepared by co-precipitation alkaline aqueous media FeSO4.7H2O with increasing amounts ZnSO4.7H2O to obtain following sequence Zn2+ substitutions: 0.0,...

Synthetic aluminum-substituted maghemites were characterized by total chemical analysis, powder X-ray diffraction (XRD), Mössbauer spectroscopy (ME), and vibrating sample magnetometry (VSM). The aim was to determine the structural, magnetic, hyperfine properties of γ-Fe2-xAl xO3 as Al concentration is varied. XRD results synthetic products indexed exclusively maghemite. Increasing for Fe substitution decreased mean crystalline dimension shifted all peaks higher º2θ angles. a0 cubic unit cell...