Response of bell pepper grown inside plastic houses to nitrogen fertigation

Qawasmi, W.; Mohammad, Munir J.; Najim, Husam; Qubursi, Remon

doi:10.1080/00103629909370390

Cited by 28 publications

(23 citation statements)

References 19 publications

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“…Siddiqi et al 20 also pointed out that reduction of macronutrient concentrations to 50 or 25% of the control levels had no adverse effect on fruit yield, highlighting the enormous buffer capacity of plants to store nitrogen. The lack of yield response to an additional fertilization is consistent with other studies which found that pepper requires low N fertilization rates for near-maximum production 21,22 . The integrated treatment (half the fertilizer dosage of the conventional treatment) showed the highest amounts of the extra and first-class fruit categories but no differences between treatments were observed for the second, third and the non-commercial fruits.…”

Section: Resultssupporting

confidence: 91%

Yield and fruit quality response of sweet pepper to organic and mineral fertilization

Amor

2007

Renew. Agric. Food Syst.

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Sweet pepper plants were grown in a greenhouse under three different cultivation methods (organic, integrated and conventional farming). During the crop cycle, plant growth and especially yield and fruit quality parameters were monitored to determine the effects of the different fertilization strategies. Plant fresh weight and total leaf fresh weight were progressively reduced, relative to the other treatments, in the organic treatment compared with the conventional, and at the end of the crop cycle these parameters were reduced by 32.6 and 35% respectively. This reduction in growth was directly correlated with plant nitrate concentration and, at the end of the study, nitrate concentration was reduced almost completely in the organic treatment. Despite the important effect on growth, no significant differences in total marketable yield were observed between conventional and organic farming, although integrated farming showed the highest yield in the extra and first class fruit categories. Organic farming increased antioxidant activity but reduced both chlorophylls and b-carotene. Fruit firmness, pericarp thickness, pH and total soluble solids content showed higher values with the organic method, but these differences were not significant with respect to the conventional method. Our results show the advantages of the organic fertilization, from both environmental and economic perspectives, if proper dosage is added to the crop and the demonstrated buffer capacity of these plants, with respect to maintaining yield under nutrient depletion at later stages of development, is taken into account.

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Section: Resultssupporting

confidence: 91%

Yield and fruit quality response of sweet pepper to organic and mineral fertilization

Amor

2007

Renew. Agric. Food Syst.

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“…Tumbare et al (2004) reported that nitrogen fertilizer increased fruit weight, yield and fruit number of chilli peppers. Qawasmi et al (1999) reported that increasing the rates of nitrogen applied in pepper plants increases the uptake of nitrogen by the plants and at the same time, stimulated the uptake of potassium and phosphorus through the synergistic effect of nitrogen on them. Therefore an experiment was conducted to identify a Bell pepper variety and to know its optimum spacing requirement for better growth and yield.…”

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Application of Nitrogen Fertilizer on Plant Density, Growth, Yield and Fruit of Bell Peppers (<i>Capsicum annuum</i> L.)

Bhuvaneswari

Sivaranjani

Reetha

et al. 2014

ILNS

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The present research was carried out to evaluate response of Bell peppers (Capsicum annuum L.) to plant density and nitrogen fertilizer under field conditions. Plant density at four levels (20×50 cm, 30×50 cm, 20×100 cm and 30×100 cm) and nitrogen treatments at four levels (0, 50, 100 and 150 kg·N·ha -1 ) were applied. Plant height, lateral stem number, leaf chlorophyll content, yield, and were assessed at immature and mature stages. The results showed that vegetative growth characteristics (plant height, lateral stem number and leaf dry matter) and reproductive factors (fruit volume and fruit weight) decreased with increasing plant density, but total yield (kg·ha -1 ) increased with increasing plant density. The highest and lowest total yields were obtained by plant density 20×50 cm and 30×100 cm respectively. Nitrogen fertilizer was significantly affected on plant height, lateral stem number and leaf chlorophyll content. It was observed that fertilization with 150 kg·N·ha -1 resulted to the highest fruit volume and plant yield. There were significant differences between fruit volume and fruit weight by interaction between plant density and nitrogen treatments.

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“…Apesar disso, as mesmas doses de fertilizantes são indicadas para os dois sistemas de cultivo, enfatizando a necessidade de pesquisas sobre este assunto, que servirão de base para que os fertilizantes sejam usados pelos produtores de forma mais racional e econômica. Nesse sentido, em condições de cultivo protegido, Qawasmi et al (1999) encontraram efeito favorável à aplicação de N no crescimento e produção de pimentão, durante 180 dias de cultivo. Nas mesmas condições de cultivo, Moura et al (1999) referem-se à importância do P para o pimentão, enquanto Valenzuela & Romero (1996) avaliaram o efeito favorável do N e K, aplicados através de fertirrigação, no redimento dos frutos.…”

Section: Introductionunclassified

Características químicas de um latossolo adubado com uréia e cloreto de potássio em ambiente protegido

Silva¹,

Boaretto

Fernandes

et al. 2001

Sci. agric. (Piracicaba, Braz.)

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*Autor correspondente RESUMO: A produção de vegetais mais sadios e de boa qualidade e o fornecimento contínuo no mercado são fatores que têm determinado a adoção do sistema de cultivo protegido por um número maior de produtores. Porém, devido ao pouco conhecimento sobre o manejo do solo nessas condições, tem-se aplicado altas doses de fertilizantes, ocasionando problemas de salinidade e desequilíbrio nutricional. O objetivo desse trabalho foi avaliar os efeitos da aplicação da uréia e do cloreto de potássio nas características químicas de um LATOSSOLO VERMELHO Destrófico, principalmente nos índices de acidez e saturação em potássio. O N e o K foram aplicados em cobertura, nas doses equivalentes de 13,3 e 39,9 g m -2 de N e 5,5 e 16,6 g m -2 de K, em esquema fatorial (2x2+1), com tratamento adicional, sem a aplicação dos nutrientes. Cultivou-se pimentão, cultivar Mayata, em condições de ambiente protegido, durante 34 semanas. Após o pegamento das mudas, foi aplicado 1/6 dos nutrientes a cada dez dias. Ao final do ciclo, as formas de N nítrico e N amoniacal representaram melhor as doses do nutriente aplicados ao solo e não houve acidificação. As raízes tiveram significativo crescimento após a aplicação de N, enquanto que o aumento da dose de K, aplicado como KCl, prejudicou o crescimento radicular, provavelmente associado à alta concentração de K no solo e possíveis efeitos salinos, correspondendo a mais de 5,0 mmol c dm -3 e mais que 5,3% de saturação do K no complexo de troca, na camada superficial do solo. Palavras-chave: Capsicum annuum, adubação nitrogenada, adubação potássica, saturação de potássio CHEMICAL CHARACTERISTICS OF AN OXISOL AFTER UREA AND POTASSIUM CHLORIDE FERTILIZATION IN A PROTECTED ENVIRONMENTABSTRACT: The production of healthy, high quality vegetables and the development of technologies for continuous supply to the market are important factors determining the adaption of protected cultivation systems by an increasing number of growers. Due to the little knowledge on soil management practices under these conditions, high fertilizer rates are normally applied, causing salinity problems and nutricional unbalances. The objective of this paper was to evaluate the effects of urea and potassium chloride applications on the chemical characteristics of an Eutrorthox, mainly on its acidity and potassium saturation. The N was applied in rates of 13.3 and 39.9g m -2 and the K in rates 5.5 and 16.6 g m -2 , in a fatorial (2X2+1) design, including a control. Pepper plants (Capsicum annuum, Mayata cultivar) were grown under protected condition, during 34 weeks. After seedling rooting, the nutrients were applied at the rate of one sixth of the total at ten day intervals, up to 60 days. It was observed that urea did not acidify the soil probabily due to its high buffering capacity. The nitric and ammoniacal forms of N were directly effeted by the N rates applied in relation to the soil. In the treatment with N, the roots showed better development compared to the control. However, the highes...

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Response of bell pepper grown inside plastic houses to nitrogen fertigation

Cited by 28 publications

References 19 publications

Yield and fruit quality response of sweet pepper to organic and mineral fertilization

Yield and fruit quality response of sweet pepper to organic and mineral fertilization

Application of Nitrogen Fertilizer on Plant Density, Growth, Yield and Fruit of Bell Peppers (<i>Capsicum annuum</i> L.)

Características químicas de um latossolo adubado com uréia e cloreto de potássio em ambiente protegido

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