Phytosociological Survey of Weeds in Erect Prostrate Cowpea Cultivars

Batista, Paulo Sérgio; Oliveira, V.S.; Souza, Vicente Batista de; Carvalho, Abner José de; Aspiazú, Ignácio

doi:10.1590/s0100-83582017350100031

Cited by 14 publications

(23 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Weeds are consistent with other surveys conducted in the studied region (Batista et al 2016;Batista et al 2017;Guerra et al, 2017) indicating a seed bank in the soil where some species stand out in relation to others depending on weather conditions and cultivated crop.…”

Section: Resultssupporting

confidence: 91%

Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Lacerda

Aspiazú

Carvalho

et al. 2020

Agraria

Self Cite

View full text Add to dashboard Cite

Weed interference is one of the main limiting factors in the cowpea yield. In this sense, we aimed to determine the periods of weed interference in the cowpea crop in the semi-arid region of Minas Gerais. The treatments were arranged in a 2 x 10 factorial scheme, with two factors: coexistence and control of weed and ten periods: 0, 7, 14, 21, 28, 35, 42, 49, 56 and 63 days after emergence (DAE) subjected to control and coexistence. The evaluated characteristics were dry weight of weeds and the cowpea, weight of 100 grains and yield, which was fitted to the exponential model and the periods of interference of the weed community were determined. The period before interference (PBI) occurred up to 20 DAE, with weed control having to be performed up to 32 DAE. The critical period for weed control (CPWC) was from 21 to 32 days after emergence of the crop. The cowpea bean yield reduced 73.5% with the weed interactions during the whole cycle, under conditions of the semi-arid of Minas Gerais.

show abstract

Section: Resultssupporting

confidence: 91%

Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Lacerda

Aspiazú

Carvalho

et al. 2020

Agraria

Self Cite

View full text Add to dashboard Cite

show abstract

“…The similarity index (SI) was calculated as a function of the weeds that occurred in both experiments and had a value of 76.9%, with 15 species in both areas, evidencing that the cultivars were submitted to similar competition conditions. Batista et al (2017) studied the phytosociology of weeds in the cowpea cultivation of erect and prostrate growth habit in the north of Minas Gerais and verified an SI of 72%, which would be due to the similarity of cultivation conditions to which cultivars were submitted, such as climate, soil, cultivation period, and seed bank.…”

Section: Resultsmentioning

confidence: 96%

Weed Interference in Semi-Erect and Semi-Prostate Cowpea Cultivars

et al. 2019

View full text Add to dashboard Cite

This study aimed to determine weed interference periods in semi-erect and semi-prostrate cowpea cultivars. Two simultaneous experiments were conducted with the cowpea cultivars BRS Guariba (semi-erect) and BRS Aracê (semi-prostrate). The experimental design was a randomized block design with four replications in a 7 × 2 factorial scheme, seven periods × two weed management (control and coexistence). Control and coexistence periods consisted of 0, 0-8, 0-16, 0-24, 0-32, 0-45, and 0-60 days after emergence (DAE) for the semi-erect cultivar and 0, 0-8, 0-16, 0-24, 0-32, 0-45, and 0-64 DAE for the semi-prostrate cultivar. Competition throughout the cycle reduced productivity by up to 39.81% for BRS Guariba and 37.27% for BRS Aracê. The cultivars BRS Guariba and BRS Aracê presented critical period of interference prevention of 9 to 41 DAE and 15 to 32 DAE, respectively. The semi-prostrate cultivar BRS Aracê was more competitive with weeds, requiring a shorter control period to express maximum productivity.

show abstract

“…The groups of weeds vary according to the size of the plant, and type of growth. For example, erect plant species produce little shade when compared to plants with prostrate habit (Batista et al, 2017).…”

Section: Phytosociology Of Pasturesmentioning

confidence: 99%

Degradation Process, Phytosociology and Restoration of Grasses Used for Grazing Ruminants in Brazil

2020

THE JAPS

View full text Add to dashboard Cite

The aim of this study is to present the main pasture grasses used in Brazil, the process of pasture degradation, pasture phytosociology, some undesirable pasture plants, and pasture restoration techniques. A wide plant availability and the high forage yield of its pastures make Brazil an important producer of plants for animal feed. The great majority of pastures in Brazil contain grasses of the genus Brachiaria, known for its strength and high forage potential. However, the pastures are undergoing constant degradation caused by improper handling, which leads to unsustainability. This is possibly due to extensive and extractive exploitation using a low level of technology and unsuitable management practices. Based on the principle that pastures can be restored, alternative techniques are required to promote improvements in forage quality. For this, it is important to recognize the undesirable pasture plants, which directly interfere with livestock production by competing with forage species for water, nutrients, space and light, as well as producing phytotoxins that prevent or suppress the growth of forage species. In the process of pasture restoration, the main objective is to maintain the vital functions of the ecosystem and to mitigate damage from undesirable plants through the immediate coverage of the soil.

show abstract

Phytosociological Survey of Weeds in Erect Prostrate Cowpea Cultivars

Cited by 14 publications

References 10 publications

Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Weed Interference in Semi-Erect and Semi-Prostate Cowpea Cultivars

Degradation Process, Phytosociology and Restoration of Grasses Used for Grazing Ruminants in Brazil

Contact Info

Product

Resources

About