Eficiência De Utilização De Adubação Orgânica Em Forrageiras Tropicais

Castro, Camila da Silva; Lobo, Ulisses Gabriel Moraes; Rodrigues, Lucas Matheus; Backes, Clarice; Santos, Alexandre Leme Godoy dos

doi:10.32404/rean.v3i4.1144

Cited by 18 publications

(17 citation statements)

References 10 publications

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“…Nitrogen fertilization represents a high cost in forage production, and the use of botanical residues as fertilizer can be a way to reduce production costs. According to Castro et al (2016) experiments measuring the SPAD index demonstrated a higher nitrogen concentration in the leaf, indicating greater photosynthetic capacity and greater potential for the accumulation of sugar and nutrients in the plant tissue, in addition to promoting greater biomass. The application of castor residue provided a significant (P < 0.05) increase in the SPAD index as well as in the dry matter of Massai grass.…”

Section: Discussionmentioning

confidence: 99%

Crop residues activity against the free-living stages of small ruminant nematodes

Salles

Braga

Nascimento

et al. 2019

Rev. Bras. Parasitol. Vet.

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The nematicidal effect of different organic materials was evaluated in order to develop a non-chemical alternative soil treatment for control of the free-living stages of small ruminant gastrointestinal nematodes. The selected organic materials were residues from the juice industry of acerola, cashew, grape, guava, papaya and pineapple, as well as castor residue from the biodiesel industry. LC90 results showed that pineapple residue was the most efficient inhibitor of larval development, followed by castor, grape, cashew, acerola, guava and papaya. Castor residue was also a good source of nitrogen and was used in a greenhouse experiment to prevent larval development in contaminated goat faeces that was deposited in pots containing the grasses Brachiaria brizantha (var. Paiaguás) or Megathyrsus maximus x M. infestum (var. Massai). Castor residue caused a significant (P < 0.05) reduction (85.04%) in Paiaguás grass contamination (L3.dry mass-1) and a reduction of 17.35% in Massai grass contamination (P > 0.05), with an increase in the biomass production of Massai (251.43%, P < 0.05) and Paiaguás (109.19%, P > 0.05) grasses. This strategy, called Econemat®, with good results in vitro shows to be promising on pasture increasing phytomass production.

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Section: Discussionmentioning

confidence: 99%

Crop residues activity against the free-living stages of small ruminant nematodes

Salles

Braga

Nascimento

et al. 2019

Rev. Bras. Parasitol. Vet.

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“…The composition of the manure used in the experiment is shown in Table 2. The amount of manure followed the recommendation of 20 to 40 t ha −1 of fresh manure by [30]. Doses of manure were chosen to provide 43.8, 30, and 15 g kg −1 of N with an 8, 11.7, and 23 C/N ratio, respectively.…”

Section: Methodsmentioning

confidence: 99%

Reclaiming Tropical Saline-Sodic Soils with Gypsum and Cow Manure

Filho

Dias

Suddarth

et al. 2019

Water

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Saline-sodic soils are a major impediment for agricultural production in semi-arid regions. Salinity and sodicity drastically reduce agricultural crop yields, damage farm equipment, jeopardize food security, and render soils unusable for agriculture. However, many farmers in developing semi-arid regions cannot afford expensive amendments to reclaim saline-sodic soils. Furthermore, existing research does not cover soil types (e.g., Luvisols and Lixisols) that are found in many semi-arid regions of South America. Therefore, we used percolation columns to evaluate the effect of inexpensive chemical and organic amendments (gypsum and cow manure) on the reclamation of saline-sodic soils in the northeast of Brazil. Soil samples from two layers (0–20 cm and 20–40 cm in depth) were collected and placed in percolation columns. Then, we applied gypsum into the columns, with and without cow manure. The experiment followed a complete randomized design with three replications. The chemical amendment treatments included a control and four combinations of gypsum and cow manure. Percolation columns were subjected to a constant flood layer of 55 mm. We evaluated the effectiveness of sodic soil reclamation treatments via changes in soil hydraulic conductivity, chemical composition (cations and anions), electrical conductivity of the saturated soil-paste extract, pH, and the exchangeable sodium percentage. These results suggest that the combined use of gypsum and cow manure is better to reduce soil sodicity, improve soil chemical properties, and increase water infiltration than gypsum alone. Cow manure at 40 ton ha−1 was better than at 80 ton ha−1 to reduce the sodium adsorption ratio.

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“…The leaf dry mass was influenced by the different treatments, with the highest value recorded for the mineral nitrogen treatment, followed by the inoculation with the Unifenas strains 100-54 and 100-69. The Guinea grass requires a highly fertile soil and, therefore, responds well to the nitrogen fertilization (Castro et al 2016), justifying the high values recorded in the mineral nitrogen treatment.…”

Section: Resultsmentioning

confidence: 98%

Growth promotion of Guinea grass by diazotrophic bacteria1

Silva

Oliveira

et al. 2019

Pesqui. Agropecu. Trop.

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The Panicum maximum species (cv. Mombaça) is a forage plant well adapted to the different edaphoclimatic conditions found in Brazil; however, it requires high nitrogen fertilizer doses to ensure high yields. The present study aimed to assess the inoculation effect with associative diazotrophic bacteria strains on the yield and bromatological characteristics of the Guinea grass. A randomized block design was used, consisting of 25 treatments, being 23 of them inoculated with diazotrophic bacteria and two without inoculation (one with and the other without mineral nitrogen), with four repetitions. The analyzed variables were stem diameter; leaf width and length; leaf, stem and root dry mass yield; crude protein; acid and neutral detergent fibers. There were no differences among the treatments for root dry mass, stem diameter and acid detergent fiber. For the remaining variables, a positive effect of the inoculation with diazotrophic bacteria was observed, particularly for the following Unifenas strains: 100-06, 100-13, 100-26, 100-30, 10-35, 100-54, 100-69, 100-71 and 100-94. This reveals the potential of these bacterial strains for use at the sustainable production of the Guinea grass with a reduction in the use of nitrogen inputs.

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Eficiência De Utilização De Adubação Orgânica Em Forrageiras Tropicais

Cited by 18 publications

References 10 publications

Crop residues activity against the free-living stages of small ruminant nematodes

Crop residues activity against the free-living stages of small ruminant nematodes

Reclaiming Tropical Saline-Sodic Soils with Gypsum and Cow Manure

Growth promotion of Guinea grass by diazotrophic bacteria1

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