Chlorophyll concentration and production of Urochloa decumbens treated with diazotrophic bacteria and thiamine in the Brazilian Cerrado

IF 0.9 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Tropical Grasslands-Forrajes Tropicales Pub Date : 2021-01-30 DOI:10.17138/TGFT(9)134-137

Eduardo Pradi Vendruscolo, Paulo R. de Oliveira, Aliny Heloísa Alcântara Rodrigues, Sávio Rosa Correia, L. F. C. Campos, A. Seleguini, Sebastião Ferreira de Lima

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引用次数: 5

Abstract

The effects of application of Azospirillum brasilense and thiamine on chlorophyll concentration and forage mass of Urochloa decumbens were evaluated in a small plot experiment conducted in Goiânia, Goiás, Brazil. The treatments were applications of: A. brasilense (concentration of 10 mL/L); thiamine at 2 concentrations: 50 and 100 mg/L; combinations of A. brasilense and thiamine at the 2 concentrations; and a Control treatment (untreated grass). At the first harvest there was a trend for applying A. brasilense, either alone or in combination with thiamine, to increase the concentrations of chlorophyll, but differences were not always significant at P<0.05. Dry mass of forage from applying A. brasilense plus thiamine at 100 mg/L was greater than that for Control and thiamine at both concentrations. At the second harvest, chlorophyll concentrations were not affected by treatment (P>0.05), while dry matter production of forage from applying A. brasilense alone and thiamine at 100 mg/L was greater (P<0.05) than that of Control and thiamine at 50 mg/L. Larger-scale and longer-term studies to validate these preliminary findings are needed.

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重氮营养菌和硫胺素处理巴西塞拉多地区躺躺虫的叶绿素浓度和产量

在巴西goi尼亚(Goiás)进行了小块试验，研究了施用巴西氮螺旋藻和硫胺素对卧斑尿藻叶绿素浓度和饲料质量的影响。处理分别为:巴西螺(浓度为10 mL/L);硫胺素浓度分别为50和100 mg/L;巴西芽孢杆菌与硫胺素在2种浓度下的组合;对照处理(未处理的草)。在第一次收获时，单独施用或与硫胺素联合施用都有增加叶绿素浓度的趋势，但差异并不总是显著(P0.05)，而单独施用100 mg/L硫胺素的饲料干物质产量(P<0.05)高于对照和50 mg/L硫胺素的饲料干物质产量(P<0.05)。需要更大规模和更长期的研究来验证这些初步发现。

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来源期刊

Tropical Grasslands-Forrajes Tropicales Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： The Journal publishes, in English or Spanish, Research Papers and Short Communications on research and development, as well as contributions from practitioners (Farmer Contributions) and Review Articles, related to pastures and forages in the tropics and subtropics. There is no regional focus; the information published should be of interest to a wide readership, encomprising researchers, academics, students, technicians, development workers and farmers. In general, the focus of the Journal is more on sown (''improved'') pastures and forages than on rangeland-specific aspects of natural grasslands, but exceptions are possible (e.g. when a submission is relevant for a particularly broad readership in the pasture and forage science community). The Journal will also consider the occasional publication of associated, but closely related, research in the form of an additional scientific communication platform [e.g. a re-make of the former Genetic Resources Communication series of the former Division of Tropical Crops and Pastures of the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia]. Areas of particular interest to the Journal are: Forage Genetic Resources and Livestock Production[...] Environmental Functions of Forages[...] Socio-economic Aspects[...] Topics within the aforementioned areas may include: Diversity evaluation; Agronomy; Establishment (including fertilization); Management and utilization; Animal production; Nutritive value; Biotic stresses (pests and diseases, weeds); Abiotic stresses (soil fertility, water, temperature); Genetics and breeding; Biogeography and germplasm collections; Seed production; Ecology; Physiology; Rhizobiology (including BNF, BNI, mycorrhizae); Forage conservation; Economics; Multilocational experimentation; Modelling.