Danos mecânicos em grãos de híbridos comerciais de milho em função da umidade de colheita

Marques, Odair José; Dalpasquale, Valdecir Antoninho; Filho, Pedro Soares Vidigal; Scapim, Carlos Alberto; Reche, Deivid Lincoln

doi:10.5433/1679-0359.2011v32n2p565

Cited by 10 publications

(10 citation statements)

References 9 publications

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“…However, a long delay in maize harvesting may cause quantitative and qualitative losses to the grain yield, due to physiological and morphological factors such as development of ear rots, plant lodging, or animal attacks [42,43]. High grain yield and good seed quality are obtained when the harvest is carried out after physiological maturity of the plants [43][44][45][46]. Gaile [47] reported the dry moisture content of maize (min 25%, optimum 28-30%) as the main criterion for determination of proper harvesting time.…”

Section: Maize Harvest and Shelling Percentagementioning

confidence: 99%

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

2019

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Standardization of crop yield estimation methods at various levels of farming helps to obtain accurate agricultural statistics as well as assessing the suitability of agricultural practices under various production conditions. The current paper reviews various maize yield estimation methods, taking into account available yield parameters, and it also analyses the yield gap between maize potential and attainable yield. The easiest and more reliable methods of yield estimation are based on yield parameters collected from the field. However, farmer estimation methods are cheaper and faster compared to any other method of yield estimation from farmers’ fields. This paper also elaborates on the importance of the use of more complex methods for yield estimation, such as remote sensing and crop modelling. These complex methods are more accurate and can predict yield before field harvest with less deviation from the exact harvest yield. However, they are very expensive and not efficient for small plots of land (less than 1 ha). Factors that contribute to the gap between potential and actual yield include poor implementation of agricultural policies, strict regulation of fertilizer inputs, vulnerability of smallholder cropping systems to adverse climatic conditions, occurrence of biotic and abiotic constraints, as well as unavailability of seeds and labor.

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Section: Maize Harvest and Shelling Percentagementioning

confidence: 99%

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

2019

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“…In addition, due to the fact that the values of the terms of the adjusted equations were elevated as a function of the increment on both factors, it was allowed to attest higher level of deterioration in the harvested plots with higher moisture contents evidencing a greater susceptibility of kneading grains to the loss of their quality according to the time. According to Marques et al (2011) when harvested with high moisture contents corn grains are more vulnerable to kneading damage which usually breaks their pericarp and exposes their cellular material. In addition, the more damaged, the more exposed the product gets to deteriorating processes which implies in aggravation of qualitative and quantitative losses from day to day after the harvest (Camolese et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Physic-Chemical Quality of Second Crop Corn as a Function of Time Between Harvest and Drying

et al. 2017

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ABSTRACT:The gap in the storage industry has brought a series of problems for the agro industrial market today, as its ability to directly infer the quality of newly collected material. The present study was carried out with the objective of evaluating the quality of second crop corn harvested with different water contents depending on the period until drying. The corn grains were harvested with moisture contents of approximately 28.5; 22.4; 21 and 19%, and subjected to temporary storage for ten days, simulating the time between harvest and drying. In the period, every two days the quality was evaluated by determining the specific mass, electrical conductivity, color, crude protein content, ethereal extract, ashes and carbohydrates. Based on the obtained results it is concluded that: the increase in the harvest water content negatively influenced the quality of the produced corn in the second harvest, being this effect worsened with time. The harvest moisture content of 19% is the least that affected the quality of the grains during 10 days of temporary storage.

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“…Temperaturas elevadas no momento da secagem e temperaturas do ar de resfriamento promovem agravamento das trincas ou novas trincas nos grãos, contribuindo para o aumento dos grãos tidos como quebrados (JORGE et al 2005;MARCHI et al, 2006;MARQUES et al, 2011).…”

Section: Resultsunclassified

Perdas econômicas vinculadas às etapas de beneficiamento de milho e trigo, em unidade cooperativa do norte do Paraná.

Kolling¹,

Trogello²,

Modolo³

2012

AGRO@MBIENTE

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Resumo -A produção nacional de grãos cresce ano após ano, entretanto o sistema agrícola não se desenvolve como um todo. Áreas como o beneficiamento de grãos ainda apresentam elevadas perdas de ordem quantitativa e qualitativa, o que culmina em perdas econômicas de grande porte nas unidades beneficiadoras de grãos. O presente estudo buscou evidenciar as perdas econômicas oriundas do beneficiamento de grãos das culturas de milho safrinha e trigo no ano agrícola de 2006, em uma unidade beneficiadora/armazenadora de grãos, localizada na região norte do estado do Paraná. Para tal, o processo de beneficiamento, em caráter comercial, foi acompanhado com vistas ao levantamento da quebra técnica ocasionada por grãos danificados e pela secagem excessiva, nas diversas etapas do beneficiamento (recebimento, pós-secagem e expedição). Os dados percentuais foram extrapolados para a capacidade estática total da unidade observada, sendo convertidos a valores monetários, considerando o valor comercial presente dos produtos. Pode-se observar que as etapas de beneficiamento da unidade contribuíram para o aumento de danos em grãos de milho e trigo, elevando a porcentagem de impureza, quebrados e triguilho da fase de recebimento até a fase de expedição. Os resultados econômicos apresentaram uma perda associada de R$ 220.083,00 para a secagem excessiva e de R$ 52.800,00 por danos aos produtos quando da analise da capacidade total da unidade beneficiadora/armazenadora.Palavras-chave -Pós-colheita. Quebra técnica. Secagem. Triticum aestivum. Zea mays. Abstract -The national grain production is growing year after year, however the agricultural system does not develop itself as a whole. Steps such as the processing of grains still contain high losses of quantitative and qualitative, which culminates in large economic losses in grain processing units. The present study sought to highlight the economic losses arising from the processing of grain crops of winter corn and wheat in crop year 2006 in a unit processing/grain store, located in the northern region of Paraná State. To this end, the improvement process in a commercial level was accompanied with a view to raising the technical breakdown caused by grain damaged by excessive drying and, in various stages of processing (receiving, shipment and post-drying). The percentage data were extrapolated to the total static capacity of the unit recorded and converted to monetary values, considering the commercial value of this product. It can be seen that the steps of processing unit contributed to the increase of damage in corn and wheat, raising the percentage of impurity, and broken wheat middling phase until the phase of receiving shipment. The economic results showed an associated loss of R$ 220,083.00 to excessive drying and R$ 52,800.00 for damage to products upon analysis of the full drive capacity processing/store.

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Danos mecânicos em grãos de híbridos comerciais de milho em função da umidade de colheita

Cited by 10 publications

References 9 publications

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

Estimation of Maize (Zea mays L.) Yield Per Harvest Area: Appropriate Methods

Physic-Chemical Quality of Second Crop Corn as a Function of Time Between Harvest and Drying

Perdas econômicas vinculadas às etapas de beneficiamento de milho e trigo, em unidade cooperativa do norte do Paraná.

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