نتایج جستجو برای: foliar fertilization

تعداد نتایج: 43680  

2001
J. L. Bi G. R. Ballmer D. L. Hendrix T. J. Henneberry N. C. Toscano

The impact of nitrogen fertilization on cotton plants, Gossypium hirsutum L., silverleaf whitefly, Bemisia argentifolii Bellows & Perring, population dynamics and honeydew production were investigated in the field at Riverside, California, USA. Treatments were soil applications of 0, 112, 168 and 224 kg nitrogen per hectare, and a soil application of 112 kg of nitrogen plus a foliar application...

Journal: :Journal of agricultural and food chemistry 2001
J M Ruiz L Romero

The aim of the present work was to determine the influence of different CaCl(2) dosages on foliar biomass and quality of tobacco plants (Nicotiana tabacum L. var. Tennesse 86). Plants were grown under controlled conditions and submitted to regular fertilization with macro- and micronutrients. The CaCl(2) was applied to the nutrient solution at 1.25 mM (T1), 2.5 mM (T2), and 5 mM (T3). The resul...

Journal: :Spanish Journal of Agricultural Research 2009

1998
Paul G. Schaberg Timothy D. Perkins Steven G. McNulty

We evaluated the influence of protracted low-level nitrogen (N) fertilization on 29 morphological, physiological, or chemical parameters measured on mature red spruce (Picea rubens Sarg.) growing within 10 study plots on Mount Ascutney, Vermont. For 8 consecutive years prior to this study, each plot received one of five treatments: 0, 15.7, 19.8,25.6, or 3 1.4 kg N.ha-‘.year@. In comparison to ...

2014
Hamdi El-Jendoubi Saúl Vázquez Ángeles Calatayud Primož Vavpetič Katarina Vogel-Mikuš Primož Pelicon Javier Abadía Anunciación Abadía Fermín Morales

Crop Fe deficiency is a worldwide problem. The aim of this study was to assess the effects of foliar Fe applications in two species grown in different environments: peach (Prunus persica L. Batsch) trees grown in the field and sugar beet (Beta vulgaris L. cv. "Orbis") grown in hydroponics. The distal half of Fe-deficient, chlorotic leaves was treated with Fe sulfate by dipping and using a brush...

Journal: :Annals of botany 2013
Deah Lieurance Don Cipollini

BACKGROUND AND AIMS Tolerance and defence against herbivory are among the many mechanisms attributed to the success of invasive plants in their novel ranges. Because tolerance and defence against herbivory differ with the ontogeny of a plant, the effects of herbivore damage on plant fitness vary with ontogenetic stage and are compounded throughout a plant's lifetime. Environmental stresses such...

2011
Jill L. Bubier Tim R. Moore Subhash Minocha

Plants in nutrient-poor environments typically have low foliar nitrogen (N) concentrations, long-lived tissues with leaf traits designed to use nutrients eYciently, and low rates of photosynthesis. We postulated that increasing N availability due to atmospheric deposition would increase photosynthetic capacity, foliar N, and speciWc leaf area (SLA) of bog shrubs. We measured photosynthesis, fol...

2018
Angelo Signore Massimiliano Renna Massimiliano D'Imperio Francesco Serio Pietro Santamaria

The "Carota di Polignano" (Polignano Carrot - PC, Daucus carota L.) is a multi-colored landrace, cultivated in the Southern Italy, whose colors range from yellow to purple. Iodine is an essential micronutrient for humans, since it is a key component of thyroid hormones, which regulate the growth and development of the human body. The main source for iodine assumption is represented by diet, but...

Journal: :Tree physiology 2005
Christopher B Allen Rodney E Will Robert C McGarvey David R Coyle Mark D Coleman

We investigated how water and nutrient availability affect radiation-use efficiency (epsilon) and assessed leaf gas exchange as a possible mechanism for shifts in epsilon. We measured aboveground net primary production (ANPP) and annual photosynthetically active radiation (PAR) capture to calculate epsilon as well as leaf-level physiological variables (light-saturated net photosynthesis, Asat; ...

2016
H. A. Hamad

This experiment was conducted for two consecutive seasons of 2013/2014 and 2014/2015 at the Experimental Farm, Faculty of Agriculture, Zagazig University, Egypt, to evaluated the effect of different intercropping patterns (safflower: fenugreek at different row ratios; 1:1, 1:2 and 1:3 in comparison with sole cropped of each specie), different foliar fertilization levels (0, 2 and 4 g/l) and the...

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