Egg-laying hen manure in the corn yield and silage quality

ABSTRACT The aim of this study was to measure the influence of egg-laying hen manure, used in different rates, as topdressing fertilizer on corn yield and silage quality. The corn, variety UFVM-100 Nativo, was used. The experiment consisted of a randomized block design with six treatments (0.00, 0.75, 1.50, 2.25, 3.00, and 3.75 t ha-1 of tanned manure) and four replications. We measured the plant height, point of ear insertion, stem diameter, prolificacy, ear weight, proportion of ears in green matter, and the productivity of green and dry biomass of plants. After the harvest, the material was ensiled. After 64 days of storage, the silos were opened to determine the dry biomass, crude protein, losses by gases and by effluent, loss of total dry biomass, and dry biomass recovery of silages. Data were subjected to analysis of variance by the F test and the means analyzed through regression analysis. There was a linear increase in productivity of green and dry biomass of corn plants in response to manure application. The other agronomic characteristics and quality of silage did not show significant difference among treatments. The application of 3.75 t ha-1 hen manure is recommended to reach higher production of green and dry biomass of corn plants for silage. The organic fertilization with hen manure does not affect quality of the produced silage.

摘要 本研究旨在明确不同施用量的产蛋鸡粪作为追肥（topdressing fertilizer）时，对玉米产量及青贮（silage）品质的影响。试验选用玉米品种UFVM-100 Nativo，采用随机区组设计（randomized block design），设置6个处理组（施用量分别为0.00、0.75、1.50、2.25、3.00及3.75 t·ha⁻¹的鞣制鸡粪（tanned manure）），每组设置4次重复。测定指标涵盖株高、穗位高度（point of ear insertion）、茎粗、单株穗数（prolificacy）、穗重、鲜物质中穗占比，以及植株鲜生物量与干生物量产量。收获后对玉米原料进行青贮处理，贮藏64天后开启青贮窖，测定干生物量、粗蛋白质（crude protein）含量、气体与渗出液损失量、总干生物量损失率及青贮干生物量回收率。采用F检验（F test）对试验数据进行方差分析（analysis of variance），并通过回归分析（regression analysis）对各组均值进行比较分析。结果显示，玉米鲜、干生物量产量随鸡粪施用量的增加呈线性升高趋势；其余农艺性状与青贮品质在各处理组间均无显著差异。本研究推荐以3.75 t·ha⁻¹的施用量施用产蛋鸡粪，以获得更高的青贮专用玉米鲜、干生物量产量。施用产蛋鸡粪有机肥不会对所制备青贮的品质造成影响。