Produtividade do algodoeiro adensado em segunda safra em resposta à adubação nitrogenada e potássica

Borin, A. L. D. C.; Ferreira, A. C. de B.; Sofiatti, Valdinei; Carvalho, Maria da Conceição Santana; Moraes, M. C. G. de

doi:10.1590/0034-737x201764060009

Cited by 9 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the 2016/2017 season, Brazil produced 1.6 million tons of fiber and the Midwest region accounted for approximately 65% of the total Brazilian production (Conab, 2018). With the emergence of new varieties and the purpose of reducing crop costs, several have been carried out to implement reduced interrow spacings, called ultra-narrow row (0.19 to 0.38 m), narrow row (0.39 to 0.76 m), and conventional (<0.76 m) (Borin et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Droplet Distribution as a Function of Cotton Interrow Spacing and Angles of Sprayer Displacement

et al. 2018

View full text Add to dashboard Cite

Application technology factors may be influenced by changes in plant architecture, such as height and leaf area. This study aimed to evaluate which angle of sprayer displacement in the application of pesticides in relation to the direction of cotton sowing, cultivated in the ultra-narrow row, narrow row, and conventional systems, provides the best application quality characteristics in the different thirds of plants. The experiment was installed in a split-plot design with four replications in the 3 × 4 factorial scheme, composed of three cotton cultivation systems and four angles of sprayer displacement in relation to the direction of the sowing rows. The evaluated characteristics were mean volumetric diameter, density and coverage of droplets, number of droplets, and open area in the interrows without leaf. The upper third presented the highest values of mean volumetric diameter, number of droplets, and density and coverage of droplets for all interrow spacing and application angles. The angle of displacement of 30° in relation to the sowing row presented the best results in relation to the number and density of droplets. The spacing of 0.90 m in the interrows increased the number of droplets, droplet density, and coverage in the lower third of plants.

show abstract

Section: Introductionmentioning

confidence: 99%

Droplet Distribution as a Function of Cotton Interrow Spacing and Angles of Sprayer Displacement

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Yield had a quadratic response, with maximum value obtained when using 77.4% of liquid fertilizer. According to Borin et al (2017), increasing doses of Nitrogen have a significant effect on the leaf nutrient content and yield of the cotton crop. Figure 3.…”

Section: Contentsmentioning

confidence: 99%

“…When applied at adequate doses, this element stimulates growth and flowering, regularizes the plant cycle, increases yield, and improves fiber length and resistance. At high doses, N increases the plant vegetative development to the detriment of production and late formation of cotton bolls (PILBEAM, 2011;BORIN et al, 2017;KHAN et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The amount of N to be applied to the cotton crop should be divided into sowing and two topdressings, mainly in areas with the conventional crop management system and/or sandy soils with low organic matter content (KHAN et al, 2017). According to Borin et al (2017), the N sufficiency level is expected to change, which may require adjustments for the cotton crop in the second harvest. Thus, new studies in different environments and with current cultivars are necessary to establish new standards in the second harvest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Liquid nitrogen fertilization on the yield and phenologic variables of narrow-row cotton

et al. 2020

View full text Add to dashboard Cite

Slow-release liquid nitrogen fertilizer sources have been around since 1970. However, this technique is not widely used in the field, probably due to the low cost per ton of nitrogen in the solid form. This study aimed to evaluate the combination of the conventional and slow-release nitrogen fertilization on the yield and phenological variables in a narrow-row cotton crop. Treatments consisted of the combination of the nitrogen fertilizer applied as topdressing in solid form (via soil) and pulverized in the liquid form (via urea formaldehyde - UF): 0% of solid N + 0% of liquid N (0S0L); 100% of solid N + 0% of liquid N (100S0L); 75% of solid N + 25% of liquid N (75S25L); 50% of solid N + 50% of liquid N (50S50L); 25% of solid N + 75% of liquid N (25S75L); e 0% of solid N + 100% of liquid N (0S100L). The cotton crop was phenotypically evaluated at 35, 70, and 130 DAE (Days after emergence) and at the harvest time. The variation between the source of the solid nitrogen fertilizer applied to the soil (ammonium nitrate) and the liquid Nitrogen fertilizer applied by spraying (UF) affects the phenology, physiology, and yield components of the narrow-row cotton crop. The highest yield of the narrow-row cotton crop under the experimental conditions was achieved when 25% of the dose of the solid nitrogen fertilizer was applied as topdressing via soil, and 75% of the dose of the slow-release nitrogen fertilizer was sprayed. This technique provides higher profitability of the produced cotton in relation to the conventional application of the N solid fertilizer via soil.

show abstract

“…Plant spacing and density have been proposed for the growth of different plants; in the case of cotton, it has sought to meet specific needs regarding cultural practices, increasing yield, and decreasing production cost (BORIN et al, 2017). Several studies have addressed the decrease of space between planting rows and increase of number of plants per area.…”

Section: Introductionmentioning

confidence: 99%

Stink Bug Population in Cotton Plantations with Different Plant Spacings

Júnior

Degrande

Melo

et al. 2020

R. Agrogeoambiental

View full text Add to dashboard Cite

The increase in cotton plant population by decreasing the spacing between rows cause some changes in phenotypical characteristics of cotton plants, such as decrease in number of leaves per plant, low-development leaves, and great soil shading. Stink bugs of the Pentatomidae family that migrate from soybean crops seem to benefit from the cotton narrow-row planting system. The objective of the present work was to evaluate adult and nymph stink bug populations in cotton plantations under three plant spacing. The experiment was conducted in the 2010/2011 cotton season at the Experimental Farm of the Federal University of Grande Dourados, in Dourados, MS, Brazil. A randomized block experimental design was used, with three cotton growing systems and eight replications, totaling 24 plots. The cotton growing systems were selected based on spacing between planting rows (0.22, 0.45, and 0.90 m). Five evaluations were conducted to survey the stink bug populations, with two samples per plot. The number of nymphs and adults of Euschistus heros and Edessa meditabunda was counted. The spacing between cotton planting rows affects stink bug populations of the species Euschistus heros and Edessa meditabunda. Increases in cotton plant density decrease the occurrence of stink bug in the plantation. The stink bug population is greater in cotton plantations with spacing of 0.90 m between planting rows.

show abstract

Produtividade do algodoeiro adensado em segunda safra em resposta à adubação nitrogenada e potássica

Cited by 9 publications

References 19 publications

Droplet Distribution as a Function of Cotton Interrow Spacing and Angles of Sprayer Displacement

Droplet Distribution as a Function of Cotton Interrow Spacing and Angles of Sprayer Displacement

Liquid nitrogen fertilization on the yield and phenologic variables of narrow-row cotton

Stink Bug Population in Cotton Plantations with Different Plant Spacings

Contact Info

Product

Resources

About