Plantas de cobertura, manejo da palhada e produtividade da mamoneira no sistema plantio direto

Neto, J. F. Teixeira; Crusciol, Carlos Alexandre Costa; Soratto, Rogério Peres; Costa, Cláudio Hideo Martins da

doi:10.1590/s1806-66902011000400021

Cited by 10 publications

(7 citation statements)

References 11 publications

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“…Similar results were obtained by Soratto et al (2011), Ferrari Neto et al (2011), Diniz Neto et al (2009) and Dias (2009, with maximum values for W100 of the order of 38.9, 40.3, 28.6 and 35.4 g respectively. Dias (2009) points out that the WUE is the ability of the crop to assimilate carbon while limiting water loss through the stomata, and that this depends on the capacity for CO 2 assimilation, photosynthetic efficiency and the type of plant.…”

Section: Resultssupporting

confidence: 85%

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Silva¹,

Montenegro²,

Pedrosa³

et al. 2014

Rev. Ciênc. Agron.

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-The influence of different irrigation levels, both with and without mulching, was evaluated for the growth variables of productivity, production components and water use efficiency, in a castor bean crop (Ricinus Comunnis) cv. BRS Energia, in a Fluvic Neossol of the semiarid in the Brazilian state of Pernambuco. The experimental design used was completely randomised in a factorial of 4 (irrigation levels) × 2 (with and without mulch), with four replications. The irrigation levels were based on the evapotranspiration of the crop (ETc), with L1 = 60% ETc, L2 = 80% ETc, L3 = 100% ETc and L4 = 120% ETc. All growth variables showed significant differences to the mulch at 120 days after germination. The number of racemes per plant, percentage of bark, and water use efficiency responded significantly to the presence of mulch on the ground, while length of racemes, fruit yield and berry yield responded significantly to the isolated effects of the irrigation levels and ground cover. Levels L3 and L4 improved the performance of the crop, with an average productivity of over 2,360 kg berries ha RESUMO -Avaliou-se a influência de diferentes lâminas de irrigação na presença e ausência de cobertura morta nas variáveis de crescimento, produtividade, componentes de produção e eficiência do uso da água, da cultura mamoneira (Ricinus Comunnis) cultivar BRS Energia em Neossolo Flúvico no semiárido pernambucano. O delineamento experimental utilizado foi o inteiramente casualizado em esquema fatorial 4 (lâminas de irrigação) × 2 (com e sem cobertura morta) com quatro repetições. As lâminas de irrigação basearam-se na evapotranspiração de cultura (ETc), sendo L1 = 60% ETc; L2 = 80% ETc; L3 = 100% ETc e L4 = 120% ETc. Todas as variáveis de crescimento apresentaram diferença significativa à cobertura morta aos 120 dias após a germinação. O número de racemos por planta, o percentual de casca e a eficiência no uso da água responderam significativamente à presença de cobertura morta no solo; enquanto o comprimento de racemos, a produtividade de frutos e produtividade de bagas responderam significativamente aos efeitos isolados das lâminas e da cobertura do solo. As lâminas L3 e L4 foram as que permitiram melhor desempenho da cultura, com produtividade média acima de 2.360 kg ha -1 de bagas.Palavras-chave: Irrigação. Crescimento. Componentes de produção.

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Section: Resultssupporting

confidence: 85%

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Silva¹,

Montenegro²,

Pedrosa³

et al. 2014

Rev. Ciênc. Agron.

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“…For the thousand grains weight (TGW) was not observed effect of crop rotations and management of crop residues under no-till (Table 3). These results agree with those reported by Soratto (2007) andFerrari Neto et al (2011) for crops of groundnut and castor bean, respectively. The TGW of crambe observed in this study (4.68 to 4.88 g) is lower than that reported for this crop by Silva et al (2011) (6.3 to 7.7 g) and Soratto et al (2013) (6.8 to 9.3 g).…”

Section: Yield Components and Grain Yield Of Crambesupporting

confidence: 93%

“…Silva et al (2010) found higher densities of castor bean plants in rotation with millet single and intercropped with sunn hemp, and beneficial effect of the absence of mechanical management of cover crops residues with straw chopper. However, Soratto (2007) andFerrari Neto et al (2011) for growing groundnut and castor bean respectively, found no effect of cover crop on final plant density. For the thousand grains weight (TGW) was not observed effect of crop rotations and management of crop residues under no-till (Table 3).…”

Section: Yield Components and Grain Yield Of Crambementioning

confidence: 93%

“…There is evidence that in no-till cultivated with only cash-crop has resulted in soil degradation (TAVARES FILHO et al, 2010) by favoring increase soil bulk density and penetration resistance, and reduced total porosity (TAVARES FILHO et al, 2001). On the other hand, important benefits have been observed in soil structure, both in the short and long term, when cover crops with vigorous root systems and high capacity to produce dry matter are used FERRARI NETO et al, 2011;CRUSCIOL et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Silva et al (2010) andFerrari Neto et al (2011) found that the castor bean yield was higher in the absence of mechanical management of crop residues. However, Crusciol and Soratto (2007) found no effect of mechanical management of crop residues on the nutrition and yield of peanut crop under no till.…”

Section: Introductionmentioning

confidence: 99%

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Cover crops and straw management on yield components of crambe

et al. 2015

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ABSTRACT:The objective of this study was to evaluate the dry matter (DM) yield and nutrient accumulation in cover crops and the effect of these, as well as mechanical management of crop residues on growth and grain yield of crambe (Crambe abyssinica). The experiment was conducted in Santa Helena, Paraná, Brazil in Rhodic Hapludox (Red Latosol in the Brazilian classification) in experimental design of randomized complete blocks with four replications in a split-plot. The plots were: Pearl millet (Pennisetum glaucum), grass brachiaria (Brachiaria brizantha), forage sorghum (Sorghum bicolor) and sunn hemp (Crotalaria juncea) and an area fallow (spontaneous weed) and the sub-plots, the mechanical or not management of crop residues on the soil surface (Triton © ). Grass brachiaria produced less amount of DM and showed less accumulation of nutrients. Other cover crops did not differ in DM production, but the sunn hemp showed the highest concentrations of N and Ca, while pearl millet P. The mechanical management of crop residues on the soil surface not influence the yield components of crambe, however provides higher final plant density. The crambe grown after sunn hemp showed higher DM accumulation (1,826 kg ha -1 ) and grain yield (1,066 kg ha -1 ).

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Manejos de cobertura, mecanismos sulcadores e velocidades de operação sobre a semeadura direta da cultura do milho

et al. 2013

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ResumoA palhada de cobertura residual representa o grande diferencial do sistema de semeadura direta, propiciando melhorias nas condições biológicas, químicas e físicas do solo, em contrapartida esta matéria seca residual pode implicar em dificuldades no processo de semeadura, necessitando por vezes de um manejo deste resíduo. O presente trabalho teve por objetivo avaliar o desenvolvimento e produtividade da cultura do milho submetido a diferentes métodos de manejo de palhada, mecanismos sulcadores e velocidades de operação. Utilizou-se o delineamento em blocos ao acaso com parcelas subsubdivididas, composto por 16 tratamentos e quatro repetições, totalizando 64 unidades experimentais. Os tratamentos foram compostos pela combinação entre quatro manejos de palhada (palha gradeada, rolada, triturada e dessecada), dois mecanismos sulcadores (disco duplo e haste sulcadora) e duas velocidades de semeadura (4,5 e 7,0 km h -1 ). Avaliou-se a profundidade de deposição de sementes, área de solo mobilizada, uniformidade de distribuição de sementes, estande inicial de plantas, número de fileiras por espiga, número de grãos por fileira, massa de mil grãos e produtividade da cultura. Os dados obtidos foram submetidos às análises de variância e havendo diferenças significativas, as médias foram comparadas pelo teste de Tukey, a 5% de significância. A velocidade de operação de 7,0 km h -1 apresentou valores de espaçamentos falhos e duplos mais elevados. Os tratamentos empregados não influenciaram os componentes de rendimento da cultura, bem como não se observou diferenças significativas para a produtividade média da cultura de milho.Palavras-chave: semeadura direta, Zea mays, Avena strigosa, qualidade de semeadura, produtividade da cultura.Covering management, furrowing mechanisms and working speed over direct seeding of corn cultivation AbstractThe stubble covering left over represents the biggest difference of the direct seeding cultivation, providing improvement on biological, chemical and physical soil conditions. Nevertheless, the dry matter remaining may difficult the seeding process, demanding additional management of covering. The aim of this study was to evaluate the development and yield of corn cultivation submitted to different methods of stubble management, furrowing machinery and working speed. A block outlining was used at random with sub-divided lots consisting of 16 treatments and four repetitions, totalizing 64 experimental unities. The treatments consisted of a combination between four stubble managements (harrowed, rolled, grinded and desiccated stubble), two furrowing machines (double disc and furrowing shank) and two seeding velocities (4.5 e 7.0 km h -1 ). Deposition depth was evaluated, as well as mobilized soil area, eeding distribution, initial plant stand, rows per corn spike, grain per row, weight of thousand grains and crop yield. The data were submitted to the analysis of variance and since there were significant differences, the averages were compared by the Tukey test, at 5% of significance. The...

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Plantas de cobertura, manejo da palhada e produtividade da mamoneira no sistema plantio direto

Cited by 10 publications

References 11 publications

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Water allocations and mulching in castor bean crops in a semiarid Fluvic Neossol

Cover crops and straw management on yield components of crambe

Manejos de cobertura, mecanismos sulcadores e velocidades de operação sobre a semeadura direta da cultura do milho

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