scholarly journals Yield and technological quality of sugarcane under irrigation depths and nitrogen fertilization

Author(s):  
Marcos F. de Mendoça ◽  
José Dantas Neto ◽  
Patrícia F. da Silva ◽  
Emídio C. A. de Oliveira

ABSTRACT The objective of this study was to evaluate the stalk yield, sugar yield and technological quality of two varieties of sugarcane under different irrigation depths and nitrogen doses. The experiment was conducted in two consecutive years (2015 and 2016) at Olho D’Água Farm, in Itambé, Pernambuco, Brazil. The experimental design was randomized blocks in the split-split-strip-plot scheme, with four replicates. Treatments consisted of four irrigation depths (L1 = 12, L2 = 45, L3 = 100 and L4 = 125% of the crop evapotranspiration - ETc, plant cane) and (L1 = 10, L2 = 40, L3 = 100 and L4 = 125% ETc, ratoon cane), four doses of nitrogen (N1 = 0, N2 = 50, N3 = 100 and N4 = 200 kg ha-1 of N) and two varieties of sugarcane (RB92579 and RB002754). Sugarcane plants irrigated with the highest depths of 1,324.06 and 1,242.3 mm in the plant cane and ratoon cane cycles respectively produced 38.40 and 49.14 t of stalks ha-1 and 0.48 and 1.82 t of sugar ha-1 more, compared to those irrigated with the lowest depths of 124.06 and 99.4 mm. The highest stalk yield was obtained with the combination of 120.7 kg ha-1 of N and 1266.6 mm of irrigation depth. Sugarcane technological quality is positively correlated with the increase of the irrigation depth in the plant cane and ratoon cane cycles and negatively correlated with nitrogen.

Sugar Tech ◽  
2021 ◽  
Author(s):  
Renato Lemos dos Santos ◽  
Diego Moura de Andrade Oliveira ◽  
Raul Vitor de Souza Santos ◽  
Maria José Alves de Moura ◽  
Victor Hugo de Farias Guedes ◽  
...  

2020 ◽  
Vol 16 (4) ◽  
pp. 80-88
Author(s):  
Jéssica de Lucena Marinho ◽  
José Henrique Bizzarri Bazzo ◽  
Carolina Pereira Cardoso ◽  
Claudemir Zucareli

The application of nitrogen (N) in the correct dose and at the right time can favor the productivity and quality of wheat seeds. In this sense, the aim was to evaluate the effect of splitting and doses of nitrogen fertilization on the productivity and physiological quality of seeds of wheat cultivars. The seeds were produced at the National Soybean Research Center, in Londrina-PR, in a randomized block experimental design in a 2 × 7 factorial scheme, with four replications. The factors were constituted by two cultivars (BRS Gralha-azul and BRS Sabiá) and seven combinations of doses and splitting of nitrogen fertilization (0 kg ha-1, 40 kg ha-1at tillering, 80 kg ha-1at tillering, 40 kg ha-1at sowing, 80 kg ha-1at sowing, 40 kg ha-1at sowing + 40 kg ha-1at tillering, 20 kg ha-1at sowing + 60 kg ha-1at tillering). The following were evaluated: productivity, germination, first germination count, length and dry mass of seedlings, emergence of seedlings in sand and emergence speed index. The data were subjected to analysis of variance with comparison of means by the F test, between genotypes, and Scott-Knott, between N combinations. The effect of nitrogen fertilization on seed productivity varies with the cultivar. The application of 80 kg ha-1N at sowing favors the vigorof the seeds for BRS Gralha-azul, and the application of 40 kg ha-1N at sowing, or 80 kg ha-1N at tillering favors the production of quality seeds for BRS Sabiá. The inadequate supply of N impairs the physiological quality of seeds produced.


Agriculture ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 693
Author(s):  
Arkadiusz Artyszak ◽  
Dariusz Gozdowski

The Green Deal adopted by the European Commission assumes a significant reduction in the use of pesticides and synthetic fertilizers. It is necessary to search for environmentally safe technologies that will prevent a reduction in crop yield. One of such methods, which was examined in the study, is the foliar application of silicon, which can have a positive effect on root yield and its quality. In the period 2017–2019, a field experiment was carried out in which the effectiveness of the application of various forms of silicon (orthosilicic acid, a mixture of orthosilicic and polysilicic acid and calcium silicate) in sugar beet cultivation was assessed. The applied treatments of foliar application increased the root yield by 10.7–11.7%, the biological sugar yield by 8.4–12% and the pure sugar yield by 7.2–11.8% as compared to the control treatment. The differences between the individual treatments in terms of these characteristics were insignificant. Their impacts on the technological quality of roots (content of sugar, α-amino nitrogen, potassium and sodium) were different.


Author(s):  
Elis M. de Freitas ◽  
Luan B. Giovanelli ◽  
Fábio T. Delazari ◽  
Márcio L. dos Santos ◽  
Silvio B. Pereira ◽  
...  

ABSTRACT Arugula is a vegetable that has gained more highlight in the consumption, being rich in potassium, sulfur, iron, omega-3 and vitamins A and C. Availability of water and nutrients are limiting factors for production of this crop. In this context, the objective of this study was to evaluate the production of arugula subjected to different irrigation depths and potassium fertilization. The experiment was conduct between August and September 2015. The experimental design was completely randomized in split-plot scheme. Irrigation depths L1, L2, L3 and L4 (25, 50, 75 and 100% of crop evapotranspiration, respectively) represented the plots and potassium doses K1 and K2 (200 and 400 kg ha-1, respectively) represented the subplots. Although the highest yield was obtained with highest irrigation depth and highest potassium dose, it is recommended the cultivation of arugula with the lowest irrigation depth and the lowest potassium dose, considering the higher value of water use efficiency for this treatment.


2016 ◽  
Vol 62 (No. 5) ◽  
pp. 230-236 ◽  
Author(s):  
H. Klikocka ◽  
M. Cybulska ◽  
B. Barczak ◽  
B. Narolski ◽  
B. Szostak ◽  
...  

2019 ◽  
Vol 11 (6) ◽  
pp. 547 ◽  
Author(s):  
Antonio P. dos Santos ◽  
Adriana R. da Costa ◽  
Patrícia C. Silva ◽  
Pedro R. Giongo ◽  
Marcio Mesquita ◽  
...  

Nitrogen fertilization and water supply are determinant factors for production and physical-chemical quality of cherry tomato. The objective of this study is to evaluate the productivity and quality of cherry tomatoes, cultivar Carolina, produced under different irrigation depth and nitrogen treatments. The experiment was conducted in a protected environment in randomized blocks and a 5 × 3 factorial design with three replications. The treatments were integrated by the combination of five irrigation depth consisting of 50, 75, 100, 125 and 150% of replacement of the reference evapotranspiration (ETo), and three nitrogen treatments fertilization (common urea, urea with urease inhibitor and without the application of nitrogen). The productive and qualitative characteristics of tomato fruits were evaluated. Productivity was better responsive with the 125% ETo depth. The 100% ETo depth provided the highest titratable acidity. Nitrogen treatments did not promote differences in productivity and quality of tomatoes.


Irriga ◽  
2019 ◽  
Vol 24 (1) ◽  
pp. 38-53
Author(s):  
Andréa Raquel Fernandes Carlos da Costa ◽  
Mário Monteiro Rolim ◽  
Djalma Elsébio Simões Neto ◽  
Manassés Mesquita Da Silva ◽  
Gerônimo Ferreira Da Silva ◽  
...  

PRODUTIVIDADE E QUALIDADE TECNOLÓGICA DA CANA-DE-AÇÚCAR SUBMETIDA A DIFERENTES LÂMINAS DE IRRIGAÇÃO E DOSES DE NITROGÊNIO     ANDRÉA RAQUEL FERNANDES CARLOS DA COSTA1; MÁRIO MONTEIRO ROLIM2; DJALMA EUSÉBIO SIMÕES NETO3; MANASSÉS MESQUITA DA SILVA4; GERÔNIMO FERREIRA DA SILVA5 E ELVIRA MARIA RÉGIS PEDROSA6    1 Departamento de Engenharia Agrícola, UFRPE, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife-PE, Brasil. E-mail: [email protected] 2 Departamento de Engenharia Agrícola, UFRPE, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife-PE, Brasil. E-mail: [email protected] 3 Estação Experimental de Cana-de-Açúcar, UFRPE, Rua Ângela Cristina C. P. de Luna, s/n, Novo, CEP: 55914-030, Carpina-PE, Brasil. E-mail: [email protected] 4 Departamento de Engenharia Agrícola, UFRPE, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife-PE, Brasil. E-mail: [email protected] 5 Departamento de Engenharia Agrícola, UFRPE, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife-PE, Brasil. E-mail: [email protected] 6 Departamento de Engenharia Agrícola, UFRPE, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, CEP: 52171-900, Recife-PE, Brasil. E-mail: [email protected]     1 RESUMO   Dentre os fatores de produção, a irrigação e a adubação nitrogenada destacam-se como fundamentais para o aumento de produtividade e qualidade da cana-de-açúcar, assim, objetivou-se avaliar a produtividade e a qualidade tecnológica da cana-de-açúcar (cana-planta) submetida a diferentes lâminas de irrigação e doses de nitrogênio. A pesquisa foi executada em Carpina-PE, na Estação Experimental de Cana-de-Açúcar pertencente a Universidade Federal Rural de Pernambuco. Os tratamentos consistiram, em quatro lâminas de irrigação (1498; 1614; 1739 e 1854 mm) e cinco doses de nitrogênio (0; 20; 40; 80 e 120 kg ha-1) arranjados em faixas e delineados em blocos ao acaso com quatro repetições. As diferentes lâminas de irrigação, associadas às doses crescentes de nitrogênio proporcionaram aumento no rendimento de colmos e açúcar. Os teores de sólidos solúveis e de fibra da cana-de-açúcar diminuíram com o aumento das lâminas de irrigação, independentemente das doses de nitrogênio aplicadas. Os maiores teores de açúcar teórico recuperável e de sacarose no colmo da cana-de-açúcar, foram obtidos com a aplicação da lâmina de 1498 mm associada com a dose de 20 kg ha-1 de nitrogênio.   Palavras-chave: Saccharum spp., rendimento, atributos tecnológicos, irrigação, adubação nitrogenada.     COSTA, A. R. F. C. da; ROLIM, M. M.; SIMÕES NETO, D. E.; SILVA, M. M. da; SILVA, G. F. da; PEDROSA, E. M. R. PRODUCTIVITY AND TECHNOLOGICAL QUALITY SUGARCANE SUBMITTED TO DIFFERENT WATER DEPTHS AND NITROGEN DOSES     2 ABSTRACT   Among factors that affect production, irrigation and nitrogen fertilization stand out as fundamental to increase productivity and quality of sugarcane, thus, the objective of this study was to evaluate productivity and technological quality of sugarcane (cane-plant) submitted to different water depths and nitrogen doses. The research was carried out in Carpina-PE, at the Experimental Station of Sugarcane belonging to the Federal Rural University of Pernambuco. Treatments consisted of four irrigation depths (1498; 1614; 1739 and 1854 mm) and five nitrogen doses (0; 20; 40; 80 and 120 kg ha-1), arranged in strips and outlined in randomized blocks with four replications. The different irrigation depths associated with increasing doses of nitrogen provided an increase in yield of stalks and sugar. The soluble solids content and sugarcane fiber decreased with increasing water depths, regardless of the applied nitrogen doses. The highest levels of recoverable theoretical sugar and sucrose content in the cane sugarcane were obtained with the application of the 1498 mm irrigation depths associated with the dose of 20 kg ha-1 of nitrogen.   Keywords: Saccharum spp., yield, technological attributes, irrigation, nitrogen fertilization.


2021 ◽  
Vol 10 (3) ◽  
pp. e48210313536
Author(s):  
Henrique Vasque ◽  
Ariel Santivañez Aguilar ◽  
Stefany Cristina de Melo Silva ◽  
Andres Felipe Gaona Acevedo ◽  
Larissa Vasque Jácome ◽  
...  

the growth process and root quality. However, few studies are evaluating the influence of the interaction between nutrients in this culture. The objective of this work was to evaluate the effects of the combination of nitrogen fertilization with boron on the production characteristics and quality of the beet Tall Top Early Wonder. The experiment was carried out at the São Manuel Experimental Farm (FCA/Unesp), located in São Manuel-SP. The experimental design was in randomized blocks, with four replications. The evaluated factors were: nitrogen and boric fertilization, in the factorial scheme (2 x 2), totaling 4 treatments: T1 (0 kg ha-1 of N and 0 kg ha-1 of B), T2 (0 kg ha-1 of N and 4 kg ha-1 of B), T3 (90 kg ha-1 of N and 0 kg ha-1 of B) and T4 (90 kg ha-1 of N and 4 kg ha-1 of B). The results showed that there was a positive interaction between nitrogen and boron when applied together, providing increases in productivity and greater uniformity in beetroots.


2009 ◽  
Vol 70 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Marek Gajewski ◽  
Zenon Węglarz ◽  
Anna Sereda ◽  
Marta Bajer ◽  
Agnieszka Kuczkowska ◽  
...  

Quality of Carrots Grown for Processing as Affected by Nitrogen Fertilization and Harvest TermIn 2007-2008 the effect of nitrogen fertilization and harvest term on quality of two carrot cultivars was investigated. The field experiment was carried out in Żelazna Experimental Station of Warsaw University of Life Sciences. Karotan F1and Trafford F1cultivars, commonly grown for juice industry, were the objects of the experiment. Carrot seeds were sown at the beginning of May. Nitrogen fertilization was applied in five rates, ranged from 0 to 120 kg·ha-1and in two terms — before sowing and in the middle of growing season. Roots were harvested in three terms: mid-September, mid-October and the first decade of November. After harvest there were determined: nitrates (NO3) content in carrot roots and juice, soluble solids, colour parameters of juice in CIE L*a*b*system. The dose and the term of nitrogen fertilization influenced nitrates content in carrots, and the highest NO3concentration was found in carrots fertilized with 120 kg·ha-1of N before sowing. Karotan showed higher nitrates accumulation than Trafford. The content of nitrates in the roots was markedly higher than in carrot juice. Nitrates content in carrots decreased with delaying of harvest time, in opposite to soluble solids content. Soluble solids content and colour parameters of carrot juice were not affected by nitrogen fertilization, but the lowest L*, a*and b*values were observed at the last term of harvest.


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