Effects of Nitrogen Levels on Anatomy, Growth, and Chlorophyll Content in Sunflower (Helianthus annuus L.) Leaves

Kumari, Santosh

doi:10.5539/jas.v9n8p208

Cited by 14 publications

(10 citation statements)

References 28 publications

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“…of leaves plant -1 (19.45) and leaf area (1132.00 cm 2 ) was recorded under application of 100% NPK through inorganic fertilizers which was statistically at par with treatment T 3 in which 25% N was applied through VC (Table 1). This could be attributed to higher dose of inorganic nitrogen which is associated with increase in protoplasm, cell division and cell enlargement resulting in taller plants (Kumari, 2017). There was increase in number of leaves with the increase in nitrogen doses because nitrogen promotes the apical branching and hence more number of leaves appeared on plant (Kebrom, 2017).…”

Section: Resultsmentioning

confidence: 99%

Effect of Integrated Nitrogen Management on Macronutrient Availability under Cauliflower (Brassica oleracea var. botrytis L.)

Chahal¹,

Singh²,

Dhillon³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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Section: Resultsmentioning

confidence: 99%

Effect of Integrated Nitrogen Management on Macronutrient Availability under Cauliflower (Brassica oleracea var. botrytis L.)

Chahal¹,

Singh²,

Dhillon³

et al. 2019

Int.J.Curr.Microbiol.App.Sci

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“…De manera que, la aplicación de vinazas, en diferentes grados de dilución, afecta el contenido de nitrógeno foliar, el contenido de clorofilas totales y consecuentemente la asimilación fotosintética. Una tendencia similar se ha encontrado entre el contenido de nitrógeno foliar y la concentración de clorofila para girasol (Kumari, 2017). La disminución del contenido de N f por el agregado de vinazas, podría estar relacionada con el pH ácido de las mismas, lo cual afectaría la población de microorganismos del suelo relacionados con la mineralización del mismo y con ello la descomposición de la materia orgánica, nitrificación (Resende et al, 2006) y denitrificación (Leal et al, 1983.…”

Section: Discussionunclassified

La fertirrigación con vinaza de caña de azúcar limita la tasa fotosintética de soja (Glycine max, Leguminosae)

González¹,

Buedo²,

Prado³

2019

Bol. Soc. Argent. Bot.

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Introducción y Objetivos: En las provincias argentinas productoras de alcohol se genera anualmente un gran volumen de vinazas. Se ha propuesto que las mismas podrían ser utilizada para el fertirriego de la caña de azúcar u otras especies. Sin embargo, las investigaciones básicas para conocer el efecto de las mismas sobre el suelo, morfología y fisiología de las especies a fertirrigar son escasas en el noroeste argentino. M&M: Se aportan datos sobre el efecto de la vinaza diluida (1:1, 1:5 y 1:10 v/v) sobre la asimilación fotosintética de soja cultivada bajo condiciones semicontroladas (invernáculo). Resultados: La asimilación fotosintética máxima (Amax) se afecta fuertemente en todas las diluciones utilizadas. En la menor dilución (1:1) la Amax disminuye el 35 % respecto al control, mientras que en la dilución 1:10 dicho porcentaje se reduce al 15,9 %. Los cambios en la Amax se correlacionaron con disminuciones en la conductancia estomática, contenido de nitrógeno foliar (Nf) y clorofila total. Los datos de fluorescencia de la clorofila muestran una disminución de Fv/Fm en la dilución 1:1, lo que indicaría un estrés en el fotosistema II (PSII) inducido por la vinaza. Conclusiones: Se concluye que la aplicación de vinaza diluida, afecta el intercambio de gases y que si se la utiliza debería hacerse con diluciones 1:10 o superiores. Se recomienda estudios a largo plazo para conocer el efecto de la vinaza sobre las características fisicoquímicas y biológicas de los suelos, así como la probable acumulación de metales pesados en las plantas fertirrigadas.

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“…Proper vegetative and reproductive growth of the plants was accomplished by a larger amount of nitrogen and phosphorus. Kumari [23] reported that a higher rate of nitrogen is related to an increase in protoplasm, cell division and cell enlargement resulting in better vegetative structure. Hence, Katiya [15] noticed a positive response of phosphorus in the reproductive development of the plant on cauliflower.…”

Section: Plant Weightmentioning

confidence: 99%

Interaction Effect of Nitrogen and Phosphorus on Curd Yield and Seed Production of Cauliflower

Sony

Islam

Akter

et al. 2020

JEAI

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Aims: This study aimed to investigate the interaction effect of nitrogen and phosphorus on curd yield and seed production of cauliflower. Study Design: The experiment was laid out at a randomized complete block design with three replications. Place and Duration of Study: Research farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, from September 2016 to March 2017. Methodology: The experiment consisted of two factors comprising three levels of nitrogen (270, 220,170 kg ha-1) and three levels of phosphorus (160,130,100 kg ha-1) with control of each nutrient. There were 10 treatment combinations resulting in 30 unit plots where each plot had two rows of 6 plants. Nitrogen and Phosphorus fertilizer were applied as per treatment in the form of Urea and TSP as a top dressing in two equal splits at the time of transplanting and 15 days after transplanting. Results: All the characters related to growth and yield of cauliflower showed significant variation by nitrogen and phosphorus levels at different days after transplanting. Among the different treatment combinations, N270P160 produced maximum plant height (50 cm), leaf area (700 cm2), plant weight (1003 g), curd diameter (18.3 cm), marketable curd weight (601 g) and marketable curd yield (18.5 t) at harvesting compared to control where nitrogen and phosphorus were not used. Moreover, the largest number of leaves (21.3) and curd weight (346 g) was observed by treatment combinations N220P160 at harvesting. For seed production, the highest number of siliqua plant -1 (1461), 1000 seed weight (4 g), seed yield plant-1 (41.1 g) seed yield ha-1 (1.5 t) and germination (97.7%)was also found from N270P160while the maximum number of seeds siliqua-1(20.5) was revealed by N220P160 compared to control treatment. Considering a different point of view, treatment combinations N270P160 can be marked more convenient for cauliflower production than others. Conclusion: It is concluded that the combinations of nitrogen (270 kg ha-1) and phosphorus (160 kg ha-1) would be appropriate for curd yield and seed production of cauliflower.

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Effects of Nitrogen Levels on Anatomy, Growth, and Chlorophyll Content in Sunflower (Helianthus annuus L.) Leaves

Cited by 14 publications

References 28 publications

Effect of Integrated Nitrogen Management on Macronutrient Availability under Cauliflower (Brassica oleracea var. botrytis L.)

Effect of Integrated Nitrogen Management on Macronutrient Availability under Cauliflower (Brassica oleracea var. botrytis L.)

La fertirrigación con vinaza de caña de azúcar limita la tasa fotosintética de soja (Glycine max, Leguminosae)

Interaction Effect of Nitrogen and Phosphorus on Curd Yield and Seed Production of Cauliflower

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