Ammonium sulphate on maize crops under no tillage

The objectives of this work were to evaluate the management of N and S (as ammonium sulphate) fertilization under no-tillage system on the components of maize productivity and on N and S accumulation in the crop, as well as to evaluate the minimum value of the Nitrogen Sufficiency Index (NSI 0.95) as an indicator for side dressing requirements. The experiment had a completely randomized block design with six treatments and four replications carried out in Red Latosol dystrophic soil (Hapludox), in Campo Mourão, Paraná State, where the following treatments in summer growth maize were applied: T1- 120 kg ha-1 N in seeding; T2- 120 kg ha-1 N in side dressing; T3- 40 kg ha-1 N in seeding and 80 kg ha-1 N in side dressing; T4- 30 kg ha-1 N in seeding and 90 kg ha-1 N in side dressing, monitored by a chlorophyll meter using the Nitrogen Sufficiency Index (NSI); T5- 120 kg ha-1 N anticipated in wheat seeding; T6- without nitrogen fertilization. NSI was determined by the relationship between the leaf chlorophyll index (ICF) average of T4 plants and that one in the plot fertilized with 120 kg ha-1 N at the maize seed sowing (T1). During two years, ammonium sulphate was applied to the maize crop after wheat under no tillage system. In the first year, with adequate rainfall, the maize yield was similar to the one in which the complete ammonium sulphate dose application was done in maize seeding and side dressing. The anticipated fertilization to wheat seed sowing resulted in maize yield without difference from the parceled form. In the second year, with irregular rainfall, all treatments with N were similar and they increased maize yield compared to that without N fertilization. NSI of 0.95 was not efficient to evaluate maize N requirements in side dressing, and resulted in lower maize yield. N was accumulated mainly in the grains unlike S that accumulated in the plant shoots; both were highly correlated to maize productivity.

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Ammonia volatilization from Nitrogen topdressing fertilization in second-crop corn cultivated under two management systems

Revista Agrogeoambiental ◽

10.18406/2316-1817v11n420191365 ◽

2020 ◽

Vol 11 (4) ◽

Author(s):

César Ferreira Santos ◽

Sheila Isabel do Carmo Pinto ◽

Konrad Passos e Silva ◽

Paulino Da Cunha Leite ◽

Vagner Aparecido Vitor

Keyword(s):

Block Design ◽

Mineral Fertilizer ◽

N Fertilization ◽

No Tillage ◽

Cultivation System ◽

Randomized Block Design ◽

Tillage System ◽

Use Efficiency ◽

N Use ◽

Controlled Release Fertilizers

Controlled-release fertilizers are possible strategies to reduce losses through fertilization and increase nitrogen (N) use efficiency. In this context, this study aimed to evaluate the efficiency of N sources applied to second-crop corn cultivation. The experiment was carried out in a randomized block design in a 2 x 4 factorial scheme. Two cultivation systems (conventional and no-tillage) and four N fertilizers (urea pearls pure, urea+Cu+B, NBPT-treated urea and complex mineral fertilizer) with four replications were studied. Losses of N-NH3 by volatilization were evaluated up to 14 days after corn N fertilization. The data were subjected to analysis of variance and the means were grouped by the Scott-Knott test at 5% probability. Under the conditions in which the study was carried out, it was observed that urea pearls pure was the least efficient N fertilizer in restricting N-NH3 through volatilization losses. The most efficient fertilizer was NBPT-treated urea. Losses of N-NH3 by volatilization in the no-tillage system were higher than in the conventional cultivation system.

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

Journal of Agricultural Science ◽

10.5539/jas.v10n4p306 ◽

2018 ◽

Vol 10 (4) ◽

pp. 306 ◽

Cited By ~ 1

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.

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

Revista CERES ◽

10.1590/s0034-737x2014000100008 ◽

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.

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APLICAÇÃO DE NITROGÊNIO COMPLEMENTAR VIA FOLIAR NA CULTURA DO MILHO SUBMETIDO AO DESPENDOAMENTO

Revista Brasileira de Milho e Sorgo ◽

10.18512/1980-6477/rbms.v18n1p123-132 ◽

2019 ◽

Vol 18 (1) ◽

pp. 123-132

Author(s):

CRIZ RENÊ ZANOVELLO ◽

FABIANO PACENTCHUK ◽

JAQUELINE HUZAR-NOVAKOWISKI ◽

GUILHERME ZAMBONIN ◽

ANTHONY HASEGAWA SANDINI ◽

...

Keyword(s):

Crop Yield ◽

Block Design ◽

Maize Yield ◽

N Fertilization ◽

Leaf Nitrogen ◽

Negative Effects ◽

Maize Crop ◽

Yield Increase ◽

Growing Seasons ◽

Negative Effect

RESUMO – O milho é uma planta monoica, e a geração de novos híbridos exige a remoção do pendão das plantas.Sabe-se que a remoção do pendão possui efeito negativo na produtividade da cultura. Contudo, a aplicação de Ncomplementar, via foliar, poderia minimizar essas perdas. Assim, o objetivo deste estudo foi avaliar como o Ncomplementar afeta a produtividade e os componentes de rendimento da cultura do milho submetida ao despendoamento.O estudo foi conduzido em delineamento de blocos casualizados em esquema fatorial 2 x 3 x 5, sendo duas safras(2014/15 e 2015/16), três momentos de despendoamento (sem despondoamento, arranquio de 2-3 folhas e arranquiode 4-5 folhas antes do pendoamento) e cinco doses de N complementar (0, 5, 10, 15, 20 L ha-1) aplicadas no estádio depré-pendoamento (VT). Não foi verificada interação N complementar X despendoamento para nenhuma das variáveisestudadas. A menor produtividade foi verificada no despendoamento de 4-5 folhas. A aplicação de N complementaraumentou a produtividade da cultura do milho, e a aplicação de 11,5 L ha-1 incrementou a produtividade em 448 kgha-1. O despendoamento diminuiu a produtividade da cultura do milho, quanto mais precoce o despendoamento, maisnegativo é o efeito na produtividade.Palavras-chave: Melhoramento genético, N complementar, pendoamento, produção de sementes, Zea mays.FOLIAR APPLICATION OF COMPLEMENTARY NITROGEN,IN MAIZE SUBJECTED TO DETASSELINGABSTRACT – Maize is a monoic plant and the generation of new hybrids requires the removal of the tassel from theplants, which has a negative effect on crop yield. However, the use of complementary leaf nitrogen (N) fertilization,could minimize the yield losses. Therefore, the objective of this study was to evaluate the effect os the application ofcomplementary N affects on yield of the maize crop subjected to detasseling. The study was carried out in a randomizedcomplete block design, with a 2 x 3 x 5 factorial scheme and four replications. Two growing seasons (2014/15 and2015/16), three detasseling moments (without detasseling, detasseling of 2-3 leaves, and detasseling of 4-5 leaves)and five doses of complementary N (0, 5, 10, 15, 20 L ha-1) applied at the VT stage. There was no interaction betweencomplementary N and detasseling for any of the variables studied. The lowest yield was verified with the detasselingof 4-5 leaves. The application of complementary N showed a positive effect on maize yield, and the application of 11.5L ha-1 of complementary N provided yield increase of 448 kg ha-1. The detasseling technique had negative effects onmaize crop yield, the earlier is the detasseling, the more negative is the effect on yield.Keywords: Genetic improvement, Seed production, tasseling, Zea mays.

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

Scientia Agricola ◽

10.1590/s0103-90162010000500010 ◽

2010 ◽

Vol 67 (5) ◽

pp. 562-569 ◽

Cited By ~ 1

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.

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Maize second-crop intercropped with forages and soil correction depths: grain yield and forages root distribution

Research Society and Development ◽

10.33448/rsd-v9i7.4778 ◽

2020 ◽

Vol 9 (7) ◽

pp. e798974778 ◽

Cited By ~ 1

Author(s):

Izabela Rodrigues Sanches ◽

Edson Lazarini ◽

Eduardo Augusto Pontes Pechoto ◽

Fabiana Lopes dos Santos ◽

João William Bossolani ◽

...

Keyword(s):

Grain Yield ◽

Soil Acidity ◽

Maize Yield ◽

Root Diameter ◽

No Tillage ◽

Maize Crop ◽

Compacted Soils ◽

Productive Potential ◽

Tillage System ◽

Harmful Effects

Correction of soils is a required practice that aims to reduce the harmful effects of soil acidity, promote better development of the plants and ensure the productive potential of agriculture. In this sense, the objective of this work was to evaluate the maize yield in monoculture and / or intercropped and to study the development of Urochloa spp roots according to different combinations of chemical correction of the soil in rainfed conditions. The experiment was developed in an experimental area, Selvíria, MS, Brazil in dystrophic Oxisol. The experimental design used was the randomized blocks with subplots, with three replications. The soil correction treatments were arranged in the plots (control, gypsum, lime (0 - 0.2 m); lime and gypsum (0 - 0.2 m); lime (0 - 0.4 m); lime and gypsum (0 - 0.4 m)), and the subplots were occupied with maize, maize intercropped with U. ruziziensis or with Mulato II hybrid (Convert HD 364) The two intercrop with forages produced sufficient amounts of straw to start and/or maintain no-tillage system in the Cerrado region and the presence of forage in maize crop did not influence grain yield. The Mulato II hybrid had a larger root diameter, being more indicated for compacted soils, however longest root lengths were obtained by U. ruziziensis.

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

Jurnal Agrotek Tropika ◽

10.23960/jat.v2i2.2107 ◽

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.

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

Planta Daninha ◽

10.1590/s0100-83582013000400020 ◽

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.

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Influence of tillage system and starting N fertilization on seed yield and quality of soybean Glycine max (L.) Merrill

Plant Soil and Environment ◽

10.17221/201/2009-pse ◽

2010 ◽

Vol 56 (No. 3) ◽

pp. 105-110 ◽

Cited By ~ 3

Author(s):

P. Fecák ◽

D. Šariková ◽

I. Černý

Keyword(s):

Correlation Coefficient ◽

Seed Yield ◽

Block Design ◽

Alluvial Soil ◽

N Fertilization ◽

Dominant Factor ◽

Yield Reduction ◽

No Tillage ◽

Average Yield ◽

Tillage System

This field polyfactorial trial with soybean was performed on gleyey alluvial soil in 2006–2008. Three tillage systems: conventional, reduced (spring shallow cultivation to a depth of 100 mm followed by drilling), no-tillage and two doses of starting N: 50 kg N/ha, 25 kg N/ha were tested in this trial. The trial was organized in a complete randomized block design with four replicates. All data were subjected to ANOVA, LSD method and regression analysis using Statgraphics. Seed yield was highly significantly (P ≤ 0.01) affected by weather conditions. Weather was the most dominant factor that influenced seed yield. The highest average yield was found in 2008 – 2.77 t/ha, followed by 2.34 t/ha in 2006 and the lowest yield of 1.98 t/ha in 2007. The stage of seed-filling was found as the most sensitive to water stress resulting in a yield reduction. Seed protein and oil were also highly significantly (P ≤ 0.01) affected by weather. This influence, as compared with tillage system and starting N, was much higher. A negative correlation coefficient r = –0.96 was found between protein and precipitation, compared to a positive correlation coefficient r = 0.81 between oil and precipitation. Tillage system affected seed yield highly significantly (P ≤ 0.01). The highest average yield of 2.60 t/ha gave conventional tillage, followed by reduced tillage – 2.39 t/ha and no-tillage – 2.11 t/ha. The results do not support the choice of no-tillage for profitable soybean production on heavy soils. Starting N fertilization had a significant (P ≤ 0.05) influence on seed yield. The average yield difference between the two starting N treatments was 0.05 t/ha in favour of the dose of 25 kg N/ha. This dose was proven as a rational one.

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

Semina Ciências Agrárias ◽

10.5433/1679-0359.2018v39n1p99 ◽

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.

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