Crescimento De Milho Em Latossolo Com Aplicação De Água Residuária De Suinocultura

Abstract

RESUMOEste estudo teve como objetivo avaliar o uso de água residuária de suinocultura como fonte alternativa de nutrientes no crescimento inicial do milho. O delineamento experimental utilizado foi o inteiramente casualizado constituído de quatro doses de água residuária (0, 112, 224 e 448 m³ ha -1 ) com quatro repetições. Aos 49 dias após o plantio foram avaliadas as variáveis altura, número de folhas, diâmetro do colmo, área foliar e no final do período de avaliações foi determinado matéria seca da parte aérea da planta. O aumento das doses de ARS possibilitaram incrementos lineares da altura, diâmetro do colmo e área foliar de plantas de milho. A aplicação de ARS mostrou ser uma alternativa para adubação da cultura do milho, pois, influenciaram diretamente variáveis importantes da cultura do milho. PALAVRAS-CHAVE: Adubação orgânica, água residuária de suinocultura, Zea mays GROWTH OF CORN IN APPLICATION OF WATER WITH LATOSOL SWINE WASTEWATERABSTRACT This study aimed to evaluate the use of swine wastewater as an alternative source of nutrients in the early growth of corn. The experimental design was completely randomized consisted of four wastewater doses (0, 112, 224 and 448 m³ ha-1) with four replications. After 49 days after planting were evaluated variables height, leaf number, stem diameter, leaf area and at the end of the ratings period was determined dry matter of the aerial part of the plant. Increasing doses ARS allowed linear increments of height, stem diameter, leaf area of corn plants. The application of ARS could be an alternative for fertilization of corn, therefore, directly influenced important variables of corn. KEYWORDS: Organic fertilizer, swine wastewater, Zea mays INTRODUÇÃO O milho (Zea mays L.) é cultivado em todo o Brasil e apresenta grande importância econômica, devido às diversas formas de sua utilização e ao fato de ser cultivado tanto pela agricultura empresarial quanto familiar. Dentre os aspectos que

Organic Compost of Swine Manure in the Production of Green Corn in Manaus, Brazil

“…The highest dose tested (500 g m -1 or 5 t ha -1 ) resulted in a higher average plant height ( Figure 2). This result corroborates the research by Souza, Brito, Fonseca, & Bebé (2016), in which the height of maize plants was also influenced by the increase of swine liquid fertilizer doses. However, by using the liquid form of manure, the present N is in mineral form, available for the development of most crops (Serafim & Galbiatti, 2012), while in the solid fraction N is part of the organic compounds and becomes if available to plants when undergoing the mineralization process (Pra, Kozen, Oliveira, & Moraes, 2005).…”

Influence of Times and Methods of Black Oat Management on Corn Development and Yield

“…This discrepancy from the other methods is associated with an increased residue fragmentation, which becomes more homogeneously distributed over the soil surface. Such a condition reduces obstacles to seedling growth, at least if shading is lower, thus increasing surface temperature (Souza et al, 2016).…”

“…In the 2017/2018 crop season, crushed straw promoted the smallest ear diameters (46.69 mm on average). Such low performance may be related to the translocation of photoassimilates from the stem and leaves to the grains (Souza et al, 2016). The lowest ear diameters in crushed straw method suggest an impairment of production of photo-assimilates by competition for light (Vilela et al, 2012b;Souza et al, 2016).…”

“…On the other hand, variables like 1000grain weight (Tgw), ear diameter (Ed), ear length (El), and grain number per row (Grr) were positioned in the positive portion of the axis (Figures 3A and 3B). The highly positive correlation between final population (Pf) and final plant height (Fph), along with their significant correlation with 1000-grain weight (Tgw), suggests that a large part of photoassimilates were used for cell elongation, preventing full ear development and grain filling (Vilela et al 2012 ab;Souza et al, 2016). The same can be attributed to the other ear parameters, such as ear diameter (Ed), ear length (El), and grain number per row (Grr).…”

“…Another important result was an antagonistic behavior between dry matter (Dm) and final population (Pf), (Figure 3B); in this regard, the management methods with the highest dry matter (Dm) accumulation may not offer the best condition for plant development. Thus, an increased dry matter accumulation on the soil surface may provide obstacles to seedling growth, promoting shading and microclimate conditions that delay germination and hence plant growth (Souza et al, 2016). In the 2018/2019 crop season, the parameters with the highest scores in PC 1 were: ear insertion height (Ei), final plant height (Fph), ear length (El), number of rows per ear (Re), number of grains per row (Grr), and grain yield (Gy).…”