scholarly journals INTERVALOS DE TEMPO ENTRE A DESSECAÇÃO DE PASTAGEM DE AZEVÉM E A SEMEADURA DE FEIJÃO, SOJA E MILHO

2011 ◽  
Vol 12 (2) ◽  
Author(s):  
Alvadi Antonio BALBINOT JR ◽  
Gilcimar Adriano VOGT ◽  
Michelangelo Muzell TREZZI ◽  
Milton da VEIGA

Na região Sul do Brasil é comum o cultivo de feijão, soja e milho após pastagem anual de inverno, em sistema integração lavoura-pecuária. O objetivo desse trabalho foi avaliar o efeito de intervalos de tempo entre a dessecação de pastagem de azevém e a semeadura de feijão, soja e milho sobre o desempenho das culturas, em plantio direto. Foram conduzidos três experimentos, um para cada cultura, em Major Vieira, SC, na safra 2009/10, em delineamento inteiramente casualizado, com três repetições. Foram avaliados quatro intervalos de tempo entre a dessecação do azevém e a semeadura das culturas: 0, 10, 22 e 31 dias. Dessecações de azevém próximas à semeadura das três culturas conferiram maior quantidade de palha e cobertura do solo por esta no momento da semeadura, mas reduziram a cobertura do solo por plantas de feijão, soja e milho no início do ciclo de desenvolvimento. Contudo, a produtividade de grãos e os seus componentes (número de plantas por área, número de vagens/espigas por planta, número de grãos por vagem/espiga e massa do grão) não foram afetados pelos intervalos de tempo entre a dessecação do azevém e a semeadura de feijão, soja e milho. ABSTRACT In crop-livestock system in Southern Brazil is usual the common bean, soybean and corn cropping after annual winter pasture. The objective of this work was to evaluate the effect of time intervals between ryegrass desiccation and the common bean, soybean and corn sowing on crop performance, in no-tillage system. Three experiments were carried out in Major Vieira, Santa Catarina, Southern Brazil, in 2009/10 crop season. The experimental design was a completely randomized, with three replications. Were evaluated four time intervals between ryegrass desiccation and sowing crops: 0, 10, 22 and 31 days. Ryegrass desiccation near the common bean, soybean and corn sowing showed higher straw production and straw cover at sowing, but decreased the soil cover by crops plants in the beginning of their cycle. However, the grain yields and its components (number of plants per area, number of pods/ears per plant, number of grains per pod/ear and grains mass) were not affected by time intervals between ryegrass desiccation and crops sowing.

2017 ◽  
Vol 47 (2) ◽  
pp. 195-201 ◽  
Author(s):  
Jordana de Araujo Flôres ◽  
Camila Baptista do Amaral ◽  
Carolina Cipriano Pinto ◽  
Fábio Luiz Checchio Mingotte ◽  
Leandro Borges Lemos

ABSTRACT The no-tillage system can change the nitrogen dynamics in the soil, being necessary to adjust the nitrogen fertilization in order to provide this nutrient during critical phases of the common bean growth. This study aimed at evaluating the agronomic and qualitative traits of common bean grown under different straw types, as a function of the topdressing nitrogen fertilization splitting. A randomized block experimental design, in a split-plot arrangement, with four replications, was used. The plots consisted of three straw types (maize, maize intercropped with brachiaria and brachiaria), while the subplots comprised the combination of these straw materials with 8 topdressing nitrogen fertilization splitting arrangements. The common bean on brachiaria straw shows higher grain yields and crude protein contents. The nitrogen fertilization splitting, as topdressing, interacts with the straw types, increasing the number of pods per plant. The common bean plants growing on plots with single-maize straw had a shorter time for maximum hydration. The topdressing nitrogen fertilization splitting has no effect on the common bean qualitative traits.


Author(s):  
F. L. C. Mingotte ◽  
C. A. Jardim ◽  
A. P. Coelho ◽  
M. M. Yada ◽  
F. T. Leal ◽  
...  

Abstract Evaluating the effects of crop successions in no-tillage system (NTS) is essential for the correct recommendation of agronomic practices, such as top-dressing nitrogen fertilization. The aim was to evaluate the effect of the crop succession and the splitting of top-dressing N fertilization on the agronomic performance and economic viability of common bean crop. The experiment was conducted in southeastern Brazil for two agricultural seasons in an area under NTS, using a split-plot in randomized complete block design. The plots represented three cropping successions (maize in sole crop, maize intercropped with Urochloa ruziziensis and U. ruziziensis in sole crop) and the subplots composed of ten combinations of splitting of top-dressing N, at the stages V3, V4 and R5 of the common bean crop. In relation to the single application of the N dose of 90 kg ha−1, the common bean had higher response as a function of the N splitting schemes adopted, regardless of the previous cropping succession. The cropping successions evaluated did not interfere with the seed yield of common bean as subsequent crop, even at the beginning of the establishment of NTS. To obtain higher seed yield and economic viability, the N dose of 90 kg ha−1 indicated for the crop must be split and applied among the phenological stages V3, V4 and R5.


Author(s):  
Stefany Silva de Souza ◽  
Pedro Afonso Couto Júnior ◽  
Jordana de Araujo Flôres ◽  
Fábio Luiz Checchio Mingotte ◽  
Leandro Borges Lemos

ABSTRACT The common bean succession to intercropped crops in the no-tillage system is beneficial, especially in the search for sustainability. In addition to the straw production, the intercropping can supply nitrogen (N) to the common bean grown in succession, reducing the use of mineral fertilizer, which is pollutant and has a high cost. The present study aimed to evaluate the response to N fertilization of common bean in succession to maize cropping systems, as well as the viability of these systems in the no-tillage system. The experimental design was randomized blocks, in a split-plot arrangement, with four replicates. The plots consisted of the following systems: maize as a single crop, maize intercropped with brachiaria and maize intercropped with crotalaria. The subplots were five N doses (0 kg ha-1, 50 kg ha-1, 100 kg ha-1, 150 kg ha-1 and 200 kg ha-1), applied as topdressing fertilization in winter common bean, in succession to the maize cropping systems. For the maize cultivation systems, the grain yield and N amount and accumulation in the straw were evaluated. As for the common bean in succession, the grain yield and grain quality attributes were assessed. Although the three cropping systems were viable for maize grain yield, the intercropping of maize with crotalaria led to a higher N accumulation in the straw and a larger quantity of straw dry mass. The increase of the N doses promoted an increase in the grain yield of common bean grown in succession to intercropped maize. Maize intercropped with crotalaria resulted in grains with a higher size and, concerning the grain yield, an equivalent effect to that of a topdressing application of more than 200 kg ha-1 of N was observed for the common bean in succession.


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 ◽  
...  

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.


2014 ◽  
Vol 190 ◽  
pp. 52-59 ◽  
Author(s):  
Joice Mari Assmann ◽  
Ibanor Anghinoni ◽  
Amanda Posselt Martins ◽  
Sérgio Ely Valadão Gigante de Andra Costa ◽  
Diego Cecagno ◽  
...  

2020 ◽  
pp. 1-12
Author(s):  
Marcio Souza da Silva ◽  
Gustavo Roberto Fonseca de Oliveira ◽  
Luís Fernando Merloti ◽  
João William Bossolani ◽  
Liliane Santos de Camargos ◽  
...  

2013 ◽  
Vol 31 (4) ◽  
pp. 939-946
Author(s):  
P. Oliveira ◽  
A.S. Nascente ◽  
J. Kluthcouski ◽  
T.A.P. Castro

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.


2021 ◽  
Vol 213 ◽  
pp. 105152
Author(s):  
Leandro Michalovicz ◽  
Cassio Antonio Tormena ◽  
Marcelo Marques Lopes Müller ◽  
Warren A. Dick ◽  
Eduardo Cimino Cervi

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