Criteria for topdressing nitrogen application to common bean using chlorophyll meter

Maia, Suelen Cristina Mendonça; Soratto, Rogério Peres; Liebe, Suzane Maria; Almeida, Adriana Queiroz de

doi:10.1590/s0100-204x2017000700005

Cited by 15 publications

(13 citation statements)

References 20 publications

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“…The fact that nitrogen is an extremely mobile element in the plant causes the symptoms of nutritional deficiency to be expressed first in the older leaves (Taiz & Zeiger, 2017); however, the RCI evaluation was performed on the first fully expanded trifoliolate leaf (younger leaves) and may have contributed to the absence of differences. Maia et al (2017) observed the greatest differences in RCI between nitrogen doses when evaluating older leaves (third fully expanded leaf) of common bean compared to younger leaves.…”

Section: Resultsmentioning

confidence: 92%

Nitrogen fertilization in super-early cycle common bean using new sources of urea

Braz¹,

Ferreira²,

Silveira³

et al. 2018

Científica

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The efficiency of new fertilizers as a nitrogen source in super-early cycle common bean cultivars still needs to be better known. The objective was to quantify the effect of new sources and time of application of nitrogen on yield and yield components of a super-early cycle bean cultivar. The experiment was conducted in the city of Rio Verde, state of Goias, Brazil, using the experimental design of randomized blocks, in a 3x3+1 factorial scheme, with four replications. The first factor was constituted by nitrogen (N) sources: traditional urea, zeolite-associated urea, and urea with urease inhibitor, using the dose of 80 kg ha -1 N. The second factor was application stages: V2, V3, and V4, that is, when 50% of the plants had the first pair of unifoliolate leaves, the first trifoliolate leaf, and the third trifoliolate leaf fully expanded, respectively. Moreover, an additional treatment was used, without N application (control). The cultivar used was BRS FC104, of super-early cycle, from 60 to 65 days. The following were measured: relative chlorophyll index (RCI), plant height, first pod insertion height, number of pods per plant, number of grains per pod, mass of 100 grains and yield. There was no significant difference between sources and application stages regarding the number of pods per plant, number of grains per pod, plant height and first pod insertion height. The highest yields were obtained with the use of zeolite-associated urea, and the best application stage was V4. The use of urea with urease inhibitor did not provide an increase in grain yield compared to the control treatment.Additional keywords: application stage; Phaseolus vulgaris; urease inhibitor; zeolites. ResumoA eficiência de novos adubos como fonte de nitrogênio em cultivar de ciclo superprecoce, no feijoeiro comum, ainda necessita ser mais bem conhecida. O objetivo foi quantificar o efeito de novas fontes e época de aplicação de nitrogênio na produtividade e nos componentes de produtividade de cultivar de feijoeiro de ciclo superprecoce. O experimento foi conduzido no município de Rio Verde-GO, utilizando o delineamento experimental de blocos casualizados, em arranjo fatorial 3x3+1, com quatro repetições. O primeiro fator foi constituído por fontes de nitrogênio (N): ureia tradicional, ureia associada a zeólitas e ureia com inibidor da urease, utilizando a dose de 80 kg ha -1 de N. O segundo fator foram estádios de aplicação: V2, V3 e V4, ou seja, quando 50% das plantas apresentaram o primeiro par de folhas unifolioladas, a primeira folha trifoliolada e a terceira folha trifoliolada totalmente expandida, respectivamente. Além disso, foi utilizado um tratamento adicional sem aplicação de N (testemunha). A cultivar utilizada foi a BRS FC104, de ciclo superprecoce, de 60 a 65 dias. Foram medidos o índice relativo de clorofila (índice SPAD), altura de planta e de inserção da primeira vagem, número de vagens por planta e grãos por vagem, massa de 100 grãos e produtividade. Não houve diferença significativa entre fontes e estádios de ap...

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Section: Resultsmentioning

confidence: 92%

Nitrogen fertilization in super-early cycle common bean using new sources of urea

Braz¹,

Ferreira²,

Silveira³

et al. 2018

Científica

View full text Add to dashboard Cite

show abstract

“…Topdressing N fertilization linearly increased the amount of N accumulated in the shoot of the common bean crop (Figures 2 B and C). , Perez et al (2013), and Maia et al (2017) also found a positive relationship between the amount of N in the common bean shoot and the application of increasing topdressing N rates, which they associated with a greater shoot DM accumulation. In the present study, foliar N application did not interfere with N content and accumulation in the shoot of common bean in the R 8 stage (Table 1).…”

Section: Resultsmentioning

confidence: 79%

“…Nitrogen is the nutrient taken up in the greatest amount by the common bean crop (Perez et al, 2013;Soratto et al, 2013); therefore, its supply at suitable rates and times is fundamental for obtaining a high grain yield (Soratto et al, 2011(Soratto et al, , 2014(Soratto et al, , 2017Amaral et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The main method of supplying N to common bean has been through mineral fertilization applied to the soil, partly in the sowing furrow and partly topdressed or via an irrigation system. The N rates applied to the common bean crop may vary according to growing seasons, cropping history, previous crop, soil management system, and cultivar (Bordin et al, 2003;Soratto et al, 2004;Fornasieri Filho et al, 2007;Maia Pesq. agropec.…”

Section: Introductionmentioning

confidence: 99%

“…Soratto et al (2004) observed an increase in common bean grain yield with the application of up to 129 and 182 kg ha -1 topdressing N under conventional soil tillage and a newly established no-tillage system, respectively. Kaneko et al (2010) and Soratto et al (2017) obtained increases in common bean grain yield with the application of up to 180 kg ha -1 N. Amaral et al (2016) evaluated the cultivation of common bean under different straw mulching -corn (Zea mays L., corn + Urochloa ruziziensis (R.Germ. & C.M.Evrard) Morrone & Zuloaga, and U. ruziziensis -and found increases in grain yield with the application of up to 136 kg ha -1 N.…”

Section: Introductionmentioning

confidence: 99%

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Foliar and topdressing application of nitrogen to the common bean crop

Kotz-Gurgacz

Soratto

Guidorizzi

2018

Pesq. agropec. bras.

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The objective of this work was to evaluate the effect of applying N sources to leaves and N rates to the soil on the growth, N uptake, and grain and crude protein yields of the common bean (Phaseolus vulgaris) crop. Three experiments -two irrigated and one rainfed -were conducted during the 2012/2013 agricultural season, in a randomized complete block design with four replicates. The treatments consisted of the application of: four N rates (0, 45, 90, and 180 kg ha -1 ) to the soil, as topdressing in the V 4 stage; and five N sources/rates -i.e., control, without foliar N application; 2.5 kg ha -1 N as conventional urea (N-CU); 5.0 kg ha -1 N-CU; 2.5 kg ha -1 N as slow-release urea-formaldehyde (N-SR); and 5.0 kg ha -1 N-SR -to leaves, in the R 5 stage. Soil N fertilization, using rates between 124 and 180 kg ha -1 , increases shoot N content and uptake, number of pods per plant, grain yield, and protein content and yield. Regardless of the growing environment and N application to the soil, the foliar supply of N as slow-release urea-formaldehyde increases grain and protein yields, whereas the greatest rate of N as conventional urea also increases grain yield. Aplicação de nitrogênio via foliar e em cobertura na cultura do feijoeiro comumResumo -O objetivo deste trabalho foi avaliar o efeito da aplicação de fontes de N via foliar e de doses de N via solo no crescimento, na absorção de N e na produtividade de grãos e de proteína bruta da cultura do feijão comum (Phaseolus vulgaris). Foram conduzidos três experimentos -dois em condição irrigada e um em sequeiro -no ano agrícola 2012/2013, em delineamento de blocos ao acaso, com quatro repetições. Os tratamentos consistiram da aplicação de: quatro doses de N via solo (0, 45, 90 e 180 kg ha -1 ), em cobertura, no estádio V 4 ; e cinco fontes/doses de N via foliar -i.e., testemunha, sem N via foliar; 2,5 kg ha -1 de N na forma de ureia convencional (N-UC); 5,0 kg ha -1 de N-UC; 2,5 kg ha -1 de N na forma de ureia-formaldeído de liberação lenta (N-LL); e 5,0 kg ha -1 de N-LL -, no estádio R 5 . A adubação nitrogenada via solo, com doses entre 124 e 180 kg ha -1 , aumenta o teor e o acúmulo de N na parte aérea, o número de vagens por planta, a produtividade de grãos, e o teor e a produtividade de proteína. Independentemente do ambiente de cultivo e da aplicação de N via solo, o fornecimento de N na forma de ureia-formaldeído de liberação lenta via foliar aumenta a produtividade de grãos e de proteína, enquanto a aplicação da maior dose de N na forma de ureia convencional também aumenta a produtividade de grãos.Termos para indexação: Phaseolus vulgaris, adubação foliar, adubação nitrogenada, liberação lenta, ureiaformaldeído.

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Effects of Rhizobium inoculum compared with mineral nitrogen fertilizer on nodulation and seed yield of common bean. A meta-analysis

Sousa

Soratto

Peixoto

et al. 2022

Agron. Sustain. Dev.

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Criteria for topdressing nitrogen application to common bean using chlorophyll meter

Cited by 15 publications

References 20 publications

Nitrogen fertilization in super-early cycle common bean using new sources of urea

Nitrogen fertilization in super-early cycle common bean using new sources of urea

Foliar and topdressing application of nitrogen to the common bean crop

Effects of Rhizobium inoculum compared with mineral nitrogen fertilizer on nodulation and seed yield of common bean. A meta-analysis

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