scholarly journals Effect of phosphorus applied as monoammonium phosphate-coated polymers in corn culture under no-tillage system

2018 ◽  
Vol 39 (1) ◽  
pp. 99
Author(s):  
Ana Carolina Marostica Lino ◽  
Salatiér Buzetti ◽  
Marcelo Carvalho Minhoto Teixeira Filho ◽  
Fernando Shintate Galindo ◽  
Paulo Ricardo Maestrelo ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Quadratic Function ◽  
Leaf Tissue ◽  
No Tillage ◽  
Monoammonium Phosphate ◽  
Randomized Block Design ◽  
Tillage System ◽  
Essential Nutrient ◽  
Cropping Seasons

The use of phosphate fertilizers as coated polymers reduces phosphorus losses that occur by adsorption of P to soil particles, thereby providing this essential nutrient for a longer period. The objective of this study was to evaluate the effect of phosphorus doses applied as conventional monoammonium phosphate or as coated polymers on corn grown in a clayey Oxisol, in the Cerrado region. The experiment was conducted in Selvíria - MS, located at 22°22? S and 51°22? W. The experiment was laid out in a randomized block design arranged as a 4 × 2 factorial, with four doses of P2O5 (0, 50, 100, and 150 kg ha-1) and two sources of phosphorus (monoammonium phosphate (MAP) and monoammonium phosphate coated polymers). The experiment was conducted under no-tillage system during the cropping seasons in 2008/09 and 2009/10. The MAP and MAP-coated sources did not differ in most of the yield components in either of the two seasons. We found a quadratic function adjustment for P doses up to 117 and 98 kg ha-1 of P2O5 for P concentration in leaf tissue and grain yield in the 2008/2009 crop, respectively. We also obtained a quadratic function adjustment for P rates for grain yield and number of plants, up to 118 and 113 kg ha-1 of P2O5, respectively, in the 2009/2010 harvest.

scholarly journals Technical and Economic Viability of Wheat with Forms of Application and Doses of Boron

2018 ◽  
Vol 10 (4) ◽  
pp. 306 ◽  
Author(s):  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Salatiér Buzetti ◽  
Eduardo H. M. Boleta ◽  
Willian L. Rodrigues ◽  
...  
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Leaf Tissue ◽  
Economic Viability ◽  
No Tillage ◽  
Wheat Grain ◽  
Economic Return ◽  
Randomized Block Design ◽  
Tillage System ◽  
Irrigated Wheat

Boron is one of the most limiting micronutrients in grains production system in Brazil. In this way, the objective was to evaluate the effect of forms of application and doses of boron in irrigated wheat grain yield evaluating the economic terms in Cerrado region. The experiment was conducted in no-tillage system in an Oxisol with clay texture in Selvíria, MS, Brazil. The experimental design was a randomized block design with four replicates, arranged in a 4 × 3 factorial scheme: four doses of boron (0, 1, 2 and 4 kg ha-1) with boric acid source (B = 17%); and three apllication forms: a) in desiccation of the predecessor straw, together with herbicide; b) at the time of sowing, in soil along with the formulated fertilization seeding and c) via leaf tissue with the application of post emergent herbicide. The application of 2 kg ha-1 provides greater grain yields, but the highest economic return was obtained at the dose of 1 kg ha-1, with application in soil, ensuring profitability from production of irrigated wheat in the Cerrado.

scholarly journals Corn and soybean yields as affected by cover crops and herbicide timing under no-tillage system

2013 ◽  
Vol 31 (4) ◽  
pp. 939-946
Author(s):  
P. Oliveira ◽  
A.S. Nascente ◽  
J. Kluthcouski ◽  
T.A.P. Castro
Keyword(s):  
Grain Yield ◽  
Common Bean ◽  
Cover Crops ◽  
Cover Crop ◽  
Block Design ◽  
No Tillage ◽  
Brachiaria Brizantha ◽  
Grain Yields ◽  
Randomized Block Design ◽  
Tillage System

To achieve better results in the no-tillage system (NTS), it is important to properly manage the cover crop prior to planting by using herbicides, usually glyphosate. The effect of glyphosate on plant coverage is slow, and plants take a few days to die completely. Thus, when applying the herbicide on the same day of planting soybean or corn, cover crops are still alive and standing, causing initial shading on seedlings of the crop and delaying its establishment. Therefore, this study aimed to evaluate the effect of distinct cover crops and their timing of desiccation prior to planting soybean or corn, on crop yield and yield components. Two experiments were installed, one for soybean and another for corn. Each experiment consisted in combining three cover crops (Brachiaria brizantha, common bean or millet) chemically desiccated at two timings before planting the crop (15 or 0 days before planting) under no-tillage system (NTS). Experiments were installed in a completely randomized block design with five replications. Brachiaria brizantha produced the highest amount of biomass; common bean and millet as cover crops allowed higher soybean grain yields; herbicide application under common bean, millet and Brachiaria brizantha 15 days before planting soybean allowed higher crop grain yields; desiccation timing of common bean did not affect corn grain yield; Brachiaria brizantha should be desiccated 15 days before planting corn to allow maximum grain yield; when millet was used as a cover crop, glyphosate application at planting of corn allowed the highest grain yield.

scholarly journals Doses of Phosphorus in Monoammonium Phosphate form Incorporated in Biodegradable Polymers for Corn

2018 ◽  
Vol 10 (4) ◽  
pp. 316
Author(s):  
Mayara M. Martins ◽  
Marcelo C. M. Teixeira Filho ◽  
Fernando S. Galindo ◽  
Salatiér Buzetti ◽  
José A. Malmonge ◽  
...  
Keyword(s):  
Grain Yield ◽  
Biodegradable Polymers ◽  
Block Design ◽  
Residual Effect ◽  
Brazilian Cerrado ◽  
Monoammonium Phosphate ◽  
Randomized Block Design ◽  
Tillage System ◽  
Corn Grain

The use of monoammonium phosphate (MAP) dissolved in organic polymers can reduce the fixation of phosphorus in the soil, and thus provide greater availability of this nutrient for long-term crops. The objective of this study was to evaluate the effect of doses of phosphorus in conventional form and incorporated MAP in biodegradable polymers, evaluating nutritional status, production components and corn grain yield, as well as the residual effect of P and N. The experiment was conducted in a no- tillage system consolidated for more than 10 years in a Latossolo Vermelho distrófico (Oxisol) with a clay texture located in Selvíria, MS, Brazil. The experimental design was a randomized block design with four replicates, arranged in a 4 × 4 factorial scheme, four forms of MAP (conventional, P1 = polymers with 30% MAP + water, P2 = polymers with 70% MAP + water and P3 = polymers with 30% of MAP), and four doses of P2O5 (0, 60, 120 and 180 kg ha-1), applied soon after emergence of the seedlings in the corn sowing line. Polymer P1 released higher amounts of P to the soil up to the R1 stage of corn, also provided the highest grain yield, indicating to be the most promising for use in Brazilian Cerrado soil.

scholarly journals Effect of water regimes and plant densities on cowpea production1

2017 ◽  
Vol 47 (4) ◽  
pp. 432-439 ◽  
Author(s):  
Marinete Martins de Sousa Monteiro ◽  
Edson Alves Bastos ◽  
Milton José Cardoso ◽  
Aderson Soares de Andrade Júnior ◽  
Valdenir Queiroz Ribeiro
Keyword(s):  
Grain Yield ◽  
Water Depth ◽  
Plant Density ◽  
Block Design ◽  
No Tillage ◽  
Grain Yields ◽  
Water Regimes ◽  
Randomized Block Design ◽  
Plant Densities ◽  
Tillage System

ABSTRACT Cowpea has been cultivated in a rudimentary form in the main producing regions of Brazil, resulting in lower grain yields, when compared to the crop potential. The use of technologies such as water regimes, adequate plant density and soil management are alternatives to increase this crop yield. This study aimed at evaluating the effects of different water regimes and plant densities on the yield components of cowpea cultivated under conventional and no-tillage systems. A randomized block design in a split-plot factorial, with four replications, was used. The treatments consisted of five water regimes in the plots (157.00 mm, 189.00 mm, 234.00 mm, 274.00 mm and 320.00 mm) and five plant densities as subplots (12 plants m-2, 16 plants m-2, 20 plants m-2, 24 plants m-2 and 28 plants m-2). The evaluated variables were: number of pods per plant, number of pods per area, pod length and grain yield. The combination between 270 mm of irrigation water depth with a density of 280,000 plants ha-1 resulted in higher grain yield using the no-tillage system, while the combination between the density of 280,000 plants ha-1 and 320 mm of water depth favored the highest grain yields in the conventional growing system.

scholarly journals Technical and economic viability of co-inoculation with Azospirillum brasilense in soybean cultivars in the Cerrado

2018 ◽  
Vol 22 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Salatier Buzetti ◽  
Mariana G. Z. Ludkiewicz ◽  
Poliana A. L. Rosa ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Grain Yield ◽  
Biological Nitrogen Fixation ◽  
Azospirillum Brasilense ◽  
Block Design ◽  
Economic Viability ◽  
No Tillage ◽  
Randomized Block Design ◽  
Tillage System ◽  
Biological Nitrogen

ABSTRACT Biological nitrogen fixation (BNF) efficiency can be increased by co-inoculation with bradyrhizobia and Azospirillum brasilense, allowing even greater uptake of water and nutrients, leading to higher yields. Thus, this study aimed to evaluate the technical and economic viability of soybean in the Cerrado, according to the cultivars and co-inoculation with Azospirillum brasilense. The experiment was conducted in Selvíria, MS, in no-tillage system, in Oxisol, arranged in a randomized block design in a 2 x 2 factorial scheme with two cultivars (‘Potência’ and ‘Valiosa’), with and without co-inoculation with Azospirillum brasilense in the seed. Co-inoculation with A. brasilense increases grain yield in the cultivars ‘Potência’ and ‘Valiosa’, being economically viable. However, using the cultivar ‘Potência’ co-inoculated led to the highest profitability.

scholarly journals Molybdenum mixed with glyphosate and alone via foliar spray in no-tillage common bean grown on corn stover

Revista CERES ◽  
2014 ◽  
Vol 61 (1) ◽  
pp. 62-69
Author(s):  
Gessimar Nunes Camelo ◽  
Geraldo Antonio de Andrade Araújo ◽  
Renildes Lucio Ferreira Fontes ◽  
Luiz Antonio dos Santos Dias ◽  
José Eustáquio de Souza Carneiro ◽  
...  
Keyword(s):  
Common Bean ◽  
Corn Stover ◽  
Field Experiments ◽  
Block Design ◽  
Foliar Spray ◽  
Cumulative Effect ◽  
No Tillage ◽  
Randomized Block Design ◽  
Tillage System ◽  
Mo Content

The effect of molybdenum (Mo) on common bean grown in desiccated corn stover in a no-tillage system was evaluated under two application modes: Mo mixed with the desiccant glyphosate and Mo direct spray to the bean leaves. The treatments (four replicates) were assigned to a completely randomized block design in a split-plot arrangement with the application of Mo (0, 100, 200, 400 and 800 g ha-1) mixed with glyphosate in the main plots and Mo foliar spray (0 and 100 g ha-1) in the sub-plots. The field experiments were carried out in 2009 and 2010 in the municipality of Coimbra, Minas Gerais State, with the common bean cultivar Ouro Vermelho. Mo mixed with glyphosate had neither an effect on common bean yield nor on the Mo and N contents in leaves, however it increased the Mo and N contents in seeds. Application of Mo via foliar spray increased Mo content in leaves and Mo and N contents in seeds. The reapplication of molybdenum with glyphosate for desiccation in subsequent crops caused a cumulative effect of Mo content in bean seeds.

scholarly journals Fertilizer distribution mechanisms and side dress nitrogen fertilization in upland rice under no-tillage system

2010 ◽  
Vol 67 (5) ◽  
pp. 562-569 ◽  
Author(s):  
Carlos Alexandre Costa Crusciol ◽  
André de Moraes Costa ◽  
Émerson Borghi ◽  
Gustavo Spadotti Amaral Castro ◽  
Dirceu Maximino Fernandes
Keyword(s):  
Grain Yield ◽  
Upland Rice ◽  
Block Design ◽  
Soil Layer ◽  
N Fertilization ◽  
Root Penetration ◽  
No Tillage ◽  
Furrow Opener ◽  
Tillage System ◽  
Seed Deposition

Some crops have shown not to adapt to the no-tillage system (NTS) as a consequence of the compaction of the superficial soil layer. In a certain way, the mechanism used in seeders to open furrows for the deposition of fertilizers can have great importance in facilitating root penetration. This study was carried out to evaluate the influence of two fertilizer distribution mechanisms and N fertilization in upland rice (Oryza sativa) under NTS. The experiment was carried out in the growing seasons 2001/2002 and 2002/2003, in Botucatu, state of São Paulo, Brazil. A completely randomized block design was applied, with subdivided plots and four replications. Main plots consisted of two furrow opening mechanisms (furrow opener and double disk). Subplots consisted of four side dressing N levels (0, 40, 80 and 120 kg ha-1). The following parameters were evaluated: furrow and seed deposition depth, plant population, plant height, number of stems and panicles m-2, number of spikelets per panicle, spikelet fertility, weight of 1,000 grains, shoot dry matter, grain yield and N levels in the flag leaf. The success for upland rice establishment under the NTS in dry winter regions of Brazil is directly associated to the furrow opening mechanism of the seed-drill. The furrow opener mechanism resulted in deeper seed deposition, consequently decreasing seedling population, number of panicles per area and grain yield. Side dressing N fertilization in upland rice under NTS increases grain yield whenever the double disk mechanism is used to sow.

scholarly journals PENGARUH SISTEM OLAH TANAH DAN APLIKASI MULSA BAGAS PADA PERTANAMAN TEBU (Saccharum officinarum L.) TERHADAP POPULASI MIKROORGANISME PELARUT FOSFAT DI PT. GMP LAMPUNG TENGAH

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Nyang Vania Ayuningtyas Harini ◽  
Ainin Niswati ◽  
Sri Yusnaini
Keyword(s):  
Block Design ◽  
Saccharum Officinarum ◽  
Good Choice ◽  
No Tillage ◽  
Total N ◽  
Organic C ◽  
Microorganism Population ◽  
Randomized Block Design ◽  
Tillage System ◽  
Phosphate Solubilizing

Sugarcane plantation atPT Gunung Madu Plantation (GMP) has done intensive tillage since 1975. To maintain sustainable production and soil fertility is necessary to manage soil according to good soil conservation. The good choice to maintaince soil quality is no-tillage and mulching system. The research was carried out since July 2010,phosphate solubilizing microorganismwere observedat9 and 12 months after ratoon one, in April and July 2012. The research was designed as a split plot with a randomized block design (RBD) with 5 replications . Main plot are tillage system that consists of no-tillage (T0) and tillage (T1). The subplots were application of baggase mulch. Consisting ofwithout bagasse mulch application (M0) andwith 80 t ha-1baggase mulch (M1). Data were analyzed by analysis of variance at the level of 1% and 5%, which previously had been analyzed with the Bartlett test forHomogeneity and Additivity with Tukey test, and followed by LSD test at the level of 1% and 5%. The results showed that the tillage system and bagasse mulch application did not give significant effect on the population of phosphate solubilizing microorganism. Correlation test results showed that the phosphate solubilizing microorganism population has no correlation with organic C, total N, soil pH, soil moisture, soil temperature, and available P.

scholarly journals Surface applied lime dynamics and base saturation index in a consolidated no-tillage area

2017 ◽  
Vol 7 (4) ◽  
pp. 473
Author(s):  
Diego Bortolini ◽  
Luís César Cassol ◽  
Jonatas Thiago Piva ◽  
Cristiam Bosi ◽  
Kassiano Felipe Rocha
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Crop Yields ◽  
Saturation Index ◽  
Block Design ◽  
Chemical Properties ◽  
Base Saturation ◽  
No Tillage ◽  
Dry Matter Yield ◽  
Tillage System

The aim of this study was to evaluate the behavior of chemical properties and crop yields during five years after liming, in a consolidated no-tillage system area and indicate a base saturation index to serve as a criterion for recommendation. The experiment was conducted in a randomized complete block design with four repetitions, being the treatments the five lime doses (0, 2.4, 4.8, 7.2 and 9.6 Mg ha-1) applied and maintained on the soil surface. Soil chemical properties were evaluated in eight soil sampling, in the layers 0 to 0.025; 0.025 to 0.05; 0.05 to 0.10; 0.10 to 0.15; 0.15 to 0.20 and 0.20 to 0.40 m, besides crop grain yield (wheat, soybean and corn) and black oat dry matter yield, totaling five years of evaluation. The surface liming in no-tillage system increased the exchangeable magnesium and calcium contents, base saturation and soil pH and reduced the exchangeable aluminum content. The cumulative grain yield (six crops) and black oat dry matter yield (three crops) was not influenced by liming. These results suggested, from this study conditions, that the value of 50% of base saturation should be adopted as a criterion for liming for crops implanted under consolidated no-tillage systems.

scholarly journals Spacing, population density and nitrogen fertilization in corn grown in an Oxisoil

Revista CERES ◽  
2014 ◽  
Vol 61 (3) ◽  
pp. 424-433 ◽  
Author(s):  
Maria do Carmo Lana ◽  
Leandro Rampim ◽  
Tatiane Ohland ◽  
Fernando Fávero
Keyword(s):  
Grain Yield ◽  
Plant Density ◽  
Block Design ◽  
Leaf Nitrogen ◽  
Leaf Nitrogen Content ◽  
Randomized Block Design ◽  
Plant Densities ◽  
Tillage System ◽  
Leaf N Content ◽  
Nitrogen Rates

The objective of this study was to evaluate yield components, leaf nitrogen content and grain yield in corn as affected by row spacing, plant density and nitrogen topdressing. The experiment was conducted with the single-cross hybrid AG 8021, in the municipality of Toledo-PR, in an Oxisoil under no-tillage system, in the crop year 2005/ 2006. The experiment was arranged in a randomized block design and treatments in split-split-plots, with four replications. The two row spacings (0.45 and 0.90 m) were allocated in the main plots, the two plant densities (60,000 and 80,000 plants ha-1) were allocated in the subplots and the three nitrogen rates (80, 100, 120 and 140 kg ha-1 N) were allocated in the sub-subplots. Topdress nitrogen was applied using urea as N source. The rise of the plant population from 60,000 to 80,000 plants ha-1 and the application of topdress nitrogen resulted in increased production components. The application of topdress fertilization provided increase in leaf N content and grain yield for the spacings 0.45 m and 0.90 m. Yield was higher in the spacing 0.45 m than 0.90 m. Yield was higher with 60,000 plants than with 80,000 plants at 0.90 m, while at 0.45 m there was no difference in relation to the plant density.

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