Plantio irrigado de gramíneas para produção de silagem: recomendação e viabilidade para a agricultura familiar
The aim was to evaluate the performance, production characteristics, cost analysis and financial yields of silage, using crops that are part of the seed distribution program for family farming, carried out by the Rio Grande do Norte state government, and to assess the possibility of using millet...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/57218 |
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| Resumo: | The aim was to evaluate the performance, production characteristics, cost
analysis and financial yields of silage, using crops that are part of the seed distribution program
for family farming, carried out by the Rio Grande do Norte state government, and to assess the
possibility of using millet for this purpose. To this end, an experiment was carried out in a
randomized block design in which the treatments consisted of the following grasses: BRS
Potiguar maize, BRS Cruzeta maize, BRS Ponta Negra sorghum and BRS 1501 millet; each
treatment had five (5) replications. The research was conducted under drip irrigation and all the
treatments were fertilized as suggested by the soil analysis. Options for using the whole plant
for silage were characterized, measuring characteristics such as green mass production, dry
mass production, leaf mass production, bunch mass production, leaf: stalk ratio, green and
silage chemical composition, and quantification of losses in the ensiling process. In addition,
the production costs of each variety tested were estimated, showing the total income per hectare,
net income and rate of return. Cruzeta maize produced the most green mass, with 47.72 t ha-1.
Sorghum produced the most dry matter per hectare, totaling 16.59 t ha-1. Millet was the crop
with the highest losses during the ensiling process, totaling 6.4%. The fresh millet fodder had
the highest levels of crude protein (CP) and non-fiber carbohydrates (NFC) among the
treatments, totaling 11.86% and 36.43%, respectively. In addition, sorghum silage resulted in
the lowest CP content, at 7%. Cruzeta maize has the highest financial yield, with net income of
R$5,634.09 per hectare, while millet has the lowest cost of R$10,557.20. Maize varieties can
also be used as a forage option, as there is no difference in green mass production between
maize and sorghum, and the silage has higher levels of CP when compared to sorghum. Millet
can be a lower-investment but less productive option. In irrigated conditions, producing corn is
more financially advantageous. |
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