scholarly journals Nitrogen fertilization on ornamental ginger under fertigation in protected cultivation

2019 ◽  
Vol 37 (2) ◽  
pp. 146-151
Author(s):  
Douglas José Marques ◽  
Hudson C Bianchini ◽  
Aloisio P de Souza
Keyword(s):  
Organic Matter ◽  
Nitrogen Fertilization ◽  
Tropical Soils ◽  
Commercial Production ◽  
High Potential ◽  
Experimental Arrangement ◽  
In Vitro Multiplication ◽  
Protected Cultivation

ABSTRACT Tropical floriculture has increased significantly in the last decade due to a growing worldwide market trend of consuming exotic, colorful, beautiful and durable flowers. Among the tropical floriculture products, ornamental gingers, species belonging to the families Zingiberaceae and Costaceae, have high potential for ornamental use, both for landscaping, for cut and potted flower and foliage. However, little information can be found in literature when it comes to crop fertilization, mainly concerning nitrogen fertilization, quite important to tropical soils which are poor in organic matter resource. Thus, this study aimed to evaluate application of nitrogen doses, using fertigation for growing ornamental ginger under protected cultivation. The experiment was carried out from 2012 to 2016, using seedlings produced in vitro multiplication. Plantlets remained for a period of acclimatization in a nursery and, then were planted in pits spaced 1x1 m in a greenhouse. The agronomic parameters and recommendation of nitrogen using SPAD were evaluated from the beginning 2013 until 2016. The experimental arrangement was in randomized blocks with five nitrogen doses (0, 100, 200, 300 and 400 kg ha-1) and 4 replicates. The increase of nitrogen doses, up to 400 kg ha-1 via fertigation, produces 77 100-cm-height commercial flowers/tussock/year, favoring the commercial production and standardization of ornamental ginger.

IN VITRO MULTIPLICATION OF VANGUERIA EDULIS AS AFFECTED BY CYTOKININS AND MEDIUM TYPE

2018 ◽  
Vol 5 (1) ◽  
pp. 57-65
Author(s):  
H. El-Bagoury ◽  
A. Sarhan ◽  
F. Saadawy ◽  
Mai Ebrahim
Keyword(s):  
In Vitro Multiplication ◽  
Medium Type

scholarly journals Using water hyacinth (Eichhornia crassipes) biomass and humic substances to produce urea-based multi-coated slow release fertilizer

Cellulose ◽  
2021 ◽  
Author(s):  
Iris Amanda A. Silva ◽  
Osmir Fabiano L. de Macedo ◽  
Graziele C. Cunha ◽  
Rhayza Victoria Matos Oliveira ◽  
Luciane P. C. Romão
Keyword(s):  
Organic Matter ◽  
Humic Substances ◽  
Natural Organic Matter ◽  
Nitrogen Fertilization ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Slow Release ◽  
Leaching Tests ◽  
Slow Release Fertilizer ◽  
Atmosphere System

AbstractUrea-based multi-coated slow release fertilizer was produced using water hyacinth, humic substances, and chitosan, with water rich in natural organic matter as a solvent. Elemental analysis showed that the nitrogen content of the fertilizer (FERT) was around 20%. Swelling tests demonstrated the effectiveness of the water hyacinth crosslinker, which reduced the water permeability of the material. Leaching tests showed that FERT released a very low concentration of ammonium (0.82 mg L−1), compared to the amount released from urea (43.1 mg L−1). No nitrate leaching was observed for FERT, while urea leached 13.1 mg L−1 of nitrate. In water and soil, FERT showed maximum releases after 30 and 40 days, respectively, while urea reached maxima in just 2 and 5 days, respectively. The results demonstrated the promising ability of FERT to reduce nitrogen losses, as well as to minimize environmental impacts in the soil–plant-atmosphere system and to improve the efficiency of nitrogen fertilization. Graphic abstract

The effect of ammonia treatment on the intake of straw and hay when offered with rations of concentrates to ewes in late pregnancy

1985 ◽  
Vol 40 (1) ◽  
pp. 101-109 ◽  
Author(s):  
R. J. Orr ◽  
T. T. Treacher ◽  
V. C. Mason
Keyword(s):  
Organic Matter ◽  
Body Condition Score ◽  
Spring Barley ◽  
Live Weight ◽  
Late Pregnancy ◽  
Barley Straw ◽  
Ammonia Treatment ◽  
Condition Score ◽  
Forage Intake

ABSTRACTFinnish Landrace × Dorset Horn ewes were offered 300, 600 or 900 g fresh weight per day of concentrates and forage ad libitum from day 105 of pregnancy until lambing. Spring barley straw (S) or hay (H) was offered either untreated (U) or following treatment with anhydrous ammonia in an oven (T). Organic matter digestibilities (in vitro) were 0·42, 0·58, 0·42 and 0·60 and nitrogen contents were 7·2, 18·6, 12·0 and 25·0 g/kg dry matter for US, TS, UH and TH respectively. Forage intake did not differ between ewes carrying two or more foetuses but the small number of ewes carrying one foetus ate more straw (6·8 v. 4·5 g organic matter (OM) per kg live weight) than ewes carrying two or more foetuses. Ammonia treatment increased intake; the increase was larger on straw (4·6 v. 100 g OM per kg live weight) than on hay (9·0 v. 10·7 g OM per kg live weight). Replacement rates of forage by concentrates were -0·21, +0·06, -0·48 and +0·08 kg forage per kg concentrates for treatments US, TS, UH and TH respectively; only the value for treatment UH differed significantly from zero. On most treatments forage intake decreased as pregnancy progressed and the declines were greater when treated forages were offered. Concentrate level had a large effect on most aspects of ewe performance. Ewes offered treated forage gained slightly more weight in pregnancy (138 v. 104 g/day), had a slightly smaller decrease in body condition score (-0·54 v. -0·68) between day 105 and lambing but did not have greater lamb birth weights than ewes on untreated forage.

Effect of growth regulators on in vitro multiplication and rooting of shoot cultures in sugarcane

Sugar Tech ◽  
2009 ◽  
Vol 11 (1) ◽  
pp. 86-88 ◽  
Author(s):  
Shweta Pathak ◽  
M. Lal ◽  
A. K. Tiwan ◽  
M. L. Sharma
Keyword(s):  
Growth Regulators ◽  
Shoot Cultures ◽  
In Vitro Multiplication

Influence of twenty potentially antiviral substances on in vitro multiplication of hepatitis a virus

1986 ◽  
Vol 6 (2) ◽  
pp. 103-112 ◽  
Author(s):  
Anders Widell ◽  
Bengt Göran Hansson ◽  
Bo Öberg ◽  
Erik Nordenfelt
Keyword(s):  
Hepatitis A ◽  
Hepatitis A Virus ◽  
In Vitro Multiplication

Estimation of fermentable energy by the automatic in vitro gas production technique for a selection of feedstuffs incubated alone and in combination

1998 ◽  
Vol 1998 ◽  
pp. 69-69
Author(s):  
S. Fakhri ◽  
A. R. Moss ◽  
D.I. Givens ◽  
E. Owen
Keyword(s):  
Organic Matter ◽  
Incubation Period ◽  
Gas Production ◽  
Production Technique ◽  
In Vitro Gas Production ◽  
Fe Content ◽  
The Individual ◽  
Gas Volume ◽  
Selection Of

The gas production (GP) technique has previously been used to estimate the gas volume (fermentable energy (FE)) of compound feed ingredients for ruminants (Newbold et al., 1996). It was shown that the FE content of feed mixtures was represented by the combination of the total gas from the incubation of the individual feeds. However this additivity might not be consistent throughout the incubation period. The objectives were to test whether 1. other GP parameters give better estimates of FE for simple mixtures and are they additive; 2. whether organic matter apparently degraded in the rumen (OMADR) explain differences in GP; and 3. to find out if there are any other better measures than OMADR for estimating FE.

The prediction of digestibility by rumen fluid and enzymatic methods

1996 ◽  
Vol 1996 ◽  
pp. 211-211
Author(s):  
Peter Young ◽  
F. P. O'Mara ◽  
M. Rath ◽  
P. J. Caffrey
Keyword(s):  
Organic Matter ◽  
Rumen Fluid ◽  
Organic Matter Digestibility ◽  
Enzymatic Methods

Rumen fluid and cellulase based techniques are widely used to predict the digestibility of compound feeds and their ingredients. Recently gammanase enzymes have been added to some cellulase based techniques (Dowman, 1993; De Boever et al., 1994). Few comparisons of these techniques have involved by-product concentrate ingredients. The objective of this experiment was to compare the ability of three techniques, in vitro rumen fluid (RF), pepsin cellulase gammanase (PCG), and neutral detergent cellulase gammanase (NCDG), to predict the in vivo organic matter digestibility (OMD) of concentrate ingredients.

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