44 documents found, page 1 of 5

Effect of salicylic acid in two stages of application on wheat crop

Made available in DSpace on 2022-04-28T19:45:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Salicylic acid (SA) is a plant growth regulator and participates in several physiological and biochemical processes. Its use can assist in the growth, development, productivity and quality of several crops. Thus, the objective of this work was to evaluate the effect of salicylic acid in two application ...

Effect of tembotrione herbicide on potato development

Made available in DSpace on 2022-04-28T19:26:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-01-01; Tembotrione herbicide residues from maize crops in the soil can affect the growth of sensitive crops in succession, such as potatoes. In this sense, this study sought to evaluate the residual effect of tembotrione on growth and development of potato plants. A field experiment with randomized blocks desi...

Weed interference in melon crop under semi-arid conditions

The management of weeds in melon is hindered by the slow initial growth of the crop, favouring weed infestation and reducing production. During the years 2016 and 2017, weed interference periods were evaluated in two melon hybrids, yellow and frog skin, to determine the time of weed control in the crop. Four-parameter logistic regression was used to determine the critical weed control period (CPWC). The weed sp...

Impact of pyrolysis temperature on the properties of eucalyptus wood-derived bi...

Accumulation of macronutrients in cowpea and weeds in competition and under soi...

The ability of a plant species to succeed in colonization of agroecosystem depends on its efficiency in the use of growth resources even in deficient conditions. The present study aimed to evaluate the effects of competition and water deficit in the soil on the accumulation of macronutrients of Vigna unguiculata L. Walp., Commelina benghalensis L. and Waltheria indica L. The study was conducted in a greenhouse,...

Sorption and desorption of ametryn in different types of soils

Knowledge of factors related to the dynamics of herbicides in the environment is of fundamental importance to predicting the behavior of herbicides in soils with different attributes, to select appropriate dosages, as well as to avoid harmful effects on the environment and subsequent crops. The objective of this work was to evaluate the sorption and desorption of ametryn in seven soils with different attributes...

Effects of weed management and plant arrangements on yield index of sweet sorghum

Sweet sorghum is currently an important alternative for ethanol production in sugar cane off-season. In this study was to evaluate the effects of plant arrangements and the application of atrazine and S-metolachlor on growth and productivity of sweet sorghum. An experiment was conducted in randomized block design and, arranged in split plots with four repetitions. Plots consisted of spacing (0.25 m, 0.45 m 0.45...

Persistence of picloram in soil with different vegetation managements

Herbicides with long residual period may increase the risk of environmental contamination. Adequate management of forage can reduce the half-life of the picloram, one of the most herbicides used in weed control. This study aims to determine the half-life of picloram, using high-performance liquid chromatography in a cultivated soil with Brachiaria brizantha trimmed or not. Brachiaria brizantha was cultivated in...

Carryover of tembotrione and atrazine affects yield and quality of potato tubers

A cultura da batata (Solanum tuberosum L.) é favorecida pela rotação de culturas e, em alguns casos, desfavorecida pelos efeitos adversos dos herbicidas utilizados anteriormente nas culturas em rotação. Esses efeitos são redução de produtividade e desordens fisiológicas como, por exemplo, rachaduras de tubérculos, que reduzem a qualidade e valor comercial da batata para consumo in natura ou processamento indust...

Effects of Tembotrione on Potato Crop in a Tropical Soil

Made available in DSpace on 2019-10-06T16:38:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-07-20; Tembotrione is an herbicide with a high persistence in soil, a characteristic that affects the growth and development of susceptible cultures in succession. In this sense, the objective of this research was to evaluate the residual effects of tembotrione on production and quality of potato tubers in a t...