Influence of fertilizer treatment on apple fruit composition and physiology. II. Influence on respiration rate and contents of nitrogen, phosphorus, and titratable acidity

1969 ◽  
Vol 20 (6) ◽  
pp. 1073 ◽  
Author(s):  
DS Letham
Keyword(s):  
Nitrogen Content ◽  
Respiration Rate ◽  
Phosphorus Content ◽  
Titratable Acidity ◽  
Dry Weight ◽  
Apple Fruit ◽  
Fertilizer Treatment ◽  
Soluble Nitrogen ◽  
Tissue Contents ◽  
Nitrogen Phosphorus

The respiration rates and tissue contents of nitrogen, phosphorus, and titratable acidity were determined for apple fruit from trees receiving differential fertilizer treatments U, N, P, NP, and NPK (U, no fertilizer; N, 2 lb ammonium sulphate; P, 4 1b superphosphate; and K, 1 Ib potassium sulphate, per tree per year). The results obtained (expressed on a dry weight basis) are summarized as follows: Respiration rate: N > NP = NPK = U > P. Total nitrogen content: NPK > NP = N > U = P. Ethanol-insoluble nitrogen content: NPK = NP = N > U = P. Ethanol-soluble nitrogen content: NPK > NP = N > U = P. Phosphorus content : P > NP = NPK > U > N. Titratable acidity content: NPK > N > NP = U > P. The incidence of internal breakdown in stored fruit from these treatments has positively correlated with respiration rate per cell and negatively correlated with phosphorus content. Phosphorus content was negatively correlated with cell volume and respiration rate. Mechanisms by which phosphorus content might regulate the incidence of internal breakdown are discussed.

DIFFERENCES IN NITROGEN CONTENT IN EXTRACTS OF CHILLED AND NON-CHILLED TISSUES

1958 ◽  
Vol 36 (1) ◽  
pp. 45-49
Author(s):  
S. Fedoroff ◽  
R. Altschul
Keyword(s):  
Nitrogen Content ◽  
Human Placenta ◽  
Phosphorus Content ◽  
Growth Promotion ◽  
Dry Weight ◽  
Chick Embryos ◽  
Tissue Cultures ◽  
Significant Difference ◽  
Nitrogen Phosphorus

In an attempt to elucidate the increase of growth promotion of tissue cultures by extracts obtained from tissues chilled before extraction, determinations of nitrogen content were made on (a) fresh, and chilled chick embryos, (b) extracts prepared from fresh and chilled chick embryos, (c) fresh and chilled human placenta, (d) extracts prepared from fresh and chilled human placenta.There was no difference in dry weight, nitrogen content, phosphorus content, and nitrogen: phosphorus ratio between chilled and fresh chick embryos and chilled and fresh human placenta. There was, however, a significant difference in the nitrogen content of the extracts prepared from fresh and from chilled tissues, It is suggested that chilling of tissues for 7 days at + 4 °C. prior to extraction may render the cells more easily destructible during extraction, and thus supply a better yield of nutritive substances.

DIFFERENCES IN NITROGEN CONTENT IN EXTRACTS OF CHILLED AND NON-CHILLED TISSUES

1958 ◽  
Vol 36 (1) ◽  
pp. 45-49
Author(s):  
S. Fedoroff ◽  
R. Altschul
Keyword(s):  
Nitrogen Content ◽  
Human Placenta ◽  
Phosphorus Content ◽  
Growth Promotion ◽  
Dry Weight ◽  
Chick Embryos ◽  
Tissue Cultures ◽  
Significant Difference ◽  
Nitrogen Phosphorus

In an attempt to elucidate the increase of growth promotion of tissue cultures by extracts obtained from tissues chilled before extraction, determinations of nitrogen content were made on (a) fresh, and chilled chick embryos, (b) extracts prepared from fresh and chilled chick embryos, (c) fresh and chilled human placenta, (d) extracts prepared from fresh and chilled human placenta.There was no difference in dry weight, nitrogen content, phosphorus content, and nitrogen: phosphorus ratio between chilled and fresh chick embryos and chilled and fresh human placenta. There was, however, a significant difference in the nitrogen content of the extracts prepared from fresh and from chilled tissues, It is suggested that chilling of tissues for 7 days at + 4 °C. prior to extraction may render the cells more easily destructible during extraction, and thus supply a better yield of nutritive substances.

Substitusi Butiran Kering Destilat Pada Formulasi Pakan Puyuh Terhadap Kandungan Kimia Feses

2019 ◽  
Vol 12 (02) ◽  
pp. 54-65
Author(s):  
A. Wardah ◽  
Tiurma Wiliana Susanti Panjaitan
Keyword(s):  
Carbon Content ◽  
Nitrogen Content ◽  
Rice Husk ◽  
Phosphorus Content ◽  
Chemical Elements ◽  
Calcium Content ◽  
Important Chemical ◽  
Nitrogen Phosphorus

The aim of this research is to evaluate the effect of distiller dried grain (DDG) of rice husk in quail feed which effectively reduces important chemical elements in feces. The results showed that administration of DDG influenced the absorption of nutrients carbon, nitrogen, phosphorus and calsium in the quail intestine. Substitution of 10% DDG proportion in quail formulation not significantly (P>0.05) effect on carbon content in feces. Carbon content  infeces of quail at proportion of 20% DDG were significantly (P<0.01) higher than 10%. Nitrogen content in feces of quail at proportion of 20% DDG significant (P<0.05) higher than  both 10 and 0%.Futhermore nitrogen content in quail feces at 10% DDG significant (P<0.05) higher than 0%. Phosphorus content in feces quails at proportion of 10 and 20% DDG significantly (P<0.05) lower than 0%. Calcium content in quail feces at 10% and 0% not significant (P>0.05) but both were significantly (P<0.05) lower than 20%. The results of this study can be concluded that the substitution of 10% DDG of rice husk in quail feed formulations can increase absorption of phosphorus but decreases the absorption of carbon, nitrogen and calcium   Keyword: chemical elements, distillater dried grain, feces, quail

The interrelation of susceptibility to breakdown, cell size, and nitrogen and phosphorus levels in Jonathan apple fruits

1965 ◽  
Vol 16 (4) ◽  
pp. 617 ◽  
Author(s):  
D Martin ◽  
NS Stenhouse ◽  
TL Lewis ◽  
J Cerny
Keyword(s):  
Nitrogen Content ◽  
Cell Volume ◽  
Negative Relationship ◽  
Dry Weight ◽  
Cell Number ◽  
Nitrogen And Phosphorus ◽  
Individual Tree ◽  
Phosphorus And Potassium ◽  
Low Incidence ◽  
Nitrogen Phosphorus

A block of Jonathan apple trees were treated for 4 years as individual tree plots with nil, nitrogen, nitrogen + phosphorus, and nitrogen + potassium applied as sprays during two periods, either in spring before bud differentiation or after bud differentiation in mid January. The treatments had no effect on the levels of phosphorus or potassium in the fruit. Spring applications had no significant effect on the nitrogen content, but summer applications a marked one, though there was no evidence of a cumulative build-up or any effect on cell number per fruit. These increases in nitrogen content were accompanied by small increases in breakdown level, but only when an inherent seasonal susceptibility existed. Only a diminishing proportion of the additional nitrogen was incorporated into the protein fraction, and the preclimacteric respiration rate was not affected significantly by the increase in protein. Except for percentage dry matter, there was a wide variation in the values between trees of the variables, which permitted a multiple regression analysis. The regression of breakdown and cell volume was positive and highly significant in all years. Except for the year of very low incidence, there was a significant positive relationship between breakdown and nitrogen level, and a consistent negative relationship between breakdown and phosphorus level which was significant in the years of high breakdown incidence. No relationship could be shown between breakdown and potassium. Similar results were obtained by using a percentage fresh weight or percentage dry weight basis for the nitrogen, phosphorus, and potassium contents, or by using actual values or a log (x + 1) transformation for the variables, though there were some advantages in using the latter. The results suggest an important physiological interaction between breakdown and cell volume, nitrogen, and phosphorus.

scholarly journals Inflorescence Initiation in Lolium Temulentum L. IX. Some Chemical Changes in the Shoot Apex at Induction

1967 ◽  
Vol 20 (1) ◽  
pp. 1 ◽  
Author(s):  
AHGC Rijven ◽  
LT Evans
Keyword(s):  
Nitrogen Content ◽  
Shoot Apex ◽  
Phosphorus Content ◽  
Dry Weight ◽  
Cell Number ◽  
Fresh Weight ◽  
Residual Phosphorus ◽  
Residual Nitrogen ◽  
Long Day ◽  
Rna And Dna

Plants of L. temulentum were induced to flower by exposure to 1 long day. Shoot apices harvested from vegetative plants prior to the long�day exposure (day I) and others harvested on days IV and VI were analysed for length, fresh weight, total and residual (after extraction for solubles and lipids) dry weight, total and residual nitrogen content, residual phosphorus, and RNA and DNA phosphorus content. Cell number per apex was also established for two harvests.

scholarly journals Effects of Proteolytic and Lipolytic Enzyme Supplementations on Lipolysis and Proteolysis Characteristics of White Cheeses

Foods ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 125 ◽  
Author(s):  
Oya Berkay Karaca ◽  
Mehmet Güven
Keyword(s):  
Amino Acids ◽  
Free Amino Acids ◽  
Free Amino ◽  
Titratable Acidity ◽  
Water Soluble ◽  
Soluble Nitrogen ◽  
Lipolytic Enzyme ◽  
White Cheese ◽  
Amino Acid Contents ◽  
Mineral Levels

Effects of proteolytic (Neutrase, Bacillus subtilis-originate, 0.20 (P1) and 0.40 g 100 L−1 (P2)) and lipolytic (Piccantase A, Mucor miehei-originated, 0.05 (L1) and 0.10 g 100 L−1 (L2)) enzyme supplementations to cheese milk on lipolysis and proteolysis characteristics of 90-day ripened cheese samples were investigated in this study. While enzyme supplementation did not have significant effects on titratable acidity, fat and protease-peptone nitrogen ratios of cheese samples, dry matter, salt, protein, water soluble nitrogen, 12% trichloroacetic acid soluble nitrogen ratio (TCA-SN), 5% phosphotungstic acid soluble nitrogen (PTA-SN), casein nitrogen ratios, penetrometer value, total free fatty acids (TFFA) and total free amino acids (TFAA) were significantly influenced by enzyme supplementations. Individual free amino acids (15 of them) were also determined. Free amino acid contents of enzyme-supplemented cheeses were higher than the control cheese and the values increased in all cheese samples with the progress of ripening (p < 0.05). The highest amino acids in all periods of ripening were identified as glutamic acid, lysine, proline and aspartic acid. The major (Ca, P, Na, K, Mg) and minor (Zn, Fe, Cu, Mn) mineral levels of cheeses decreased with the progress of ripening and the effects of enzyme supplementations on these attributes (except for magnesium and manganese) were found to be significant (p < 0.01). As to conclude, enzyme supplementations increased proteolysis and lipolysis and accelerated ripening and thus reduced ripening durations. Especially the enzyme ratios in P1 and L1 cheeses were found to be suitable for reducing the ripening period in White cheese without any adverse effects.

scholarly journals Rhizobacteria inoculation in maize associated with nitrogen and zinc fertilization at sowing

2021 ◽  
Vol 25 (2) ◽  
pp. 96-100
Author(s):  
Andréia de L. Moreno ◽  
Jorge F. Kusdra ◽  
Angelita A. C. Picazevicz
Keyword(s):  
Bacillus Subtilis ◽  
Nitrogen Content ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Dry Weight ◽  
Stem Diameter ◽  
Wide Range ◽  
Maize Plants ◽  
Total Dry Weight

ABSTRACT Rhizobacteria have a wide range of plant growth-promoting mechanisms of action, making them an alternative and/or complementary biological input for chemical fertilizers. In this respect, the present study aimed to assess growth and nitrogen accumulation in maize plants as a function of Azospirillum brasilense, Bacillus subtilis, zinc and nitrogen application at sowing. The experiment with the ‘AL Bandeirante’ maize variety was conducted in a greenhouse, using a completely randomized design. The treatments were arranged in a 2 x 2 x 2 x 2 factorial scheme, with six repetitions, considering the presence and absence of Azospirillum brasilense (5 g kg-1), Bacillus subtilis (5 mL kg-1) and zinc (20 g kg-1) in the seeds and addition or not of nitrogen (30 kg ha-1) to the soil. The variables assessed were plant height, stem diameter, leaf, stem, shoot, root and total dry weight, and shoot nitrogen content. Nitrogen fertilization in the absence of zinc increased shoot and total dry weight as well as shoot nitrogen content. Zinc applied to the seeds improved the total and stem dry weight of maize plants in the absence of Bacillus subtilis. Inoculation with Azospirillum brasilense and Bacillus subtilis increased the stem diameter and shoot nitrogen content of maize plants when nitrogen fertilization was not performed at sowing. There was no isolated or interaction effect between factors for plant height and root dry weight.

scholarly journals Nitrogen, phosphorus and potassium content in maize dry biomass under the effect of different levels of mineral fertilization

2019 ◽  
Vol 11 (4) ◽  
pp. 311-316
Author(s):  
L. Nenova ◽  
M. Benkova ◽  
Ts. Simeonova ◽  
I. Atanassova
Keyword(s):  
Nitrogen Content ◽  
Leaf Growth ◽  
Nutrient Content ◽  
Potassium Content ◽  
Mineral Fertilization ◽  
Dry Biomass ◽  
Control Variant ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

Abstract. The aim of the study was to assess the influence of different fertilizer doses on the content of macroelements (nitrogen, phosphorus and potassium) in dry biomass and grain of maize during the 2016 – 2018 period. A field experiment with fertilization of maize was carried out on Alluvial-meadow soil (Fluvisol) in the region of Tsalapitsa village, near Plovdiv. Three variants of mineral fertilization were studied V2 (N15P10K0), V3 (N20P15K0) and V4 (N25P20K0), and a control variant V1 (N0P0K0) – without fertilization. It was established that N% content in maize dry biomass was affected significantly by the variants of fertilization (18% of the variance). Significant differences (P≤0.05) between the control variant and all the variants of fertilization were established. Increasing the fertilizer dose, nitrogen content in dry biomass increased, too. The highest was the average content of nitrogen in maize leaves (0.94%), followed by the cobs (0.71%) and the lowest was the content in the stems (0.58%). Phosphorus and potassium content of dry biomass were affected significantly by the year of the study (10% and 9% of the variance, respectively). At the 7-8th leaf growth stage of maize, the highest nutrients content (N, P, K) in dry biomass were reported. With aging of plants the nutrient content in their biomass decreased. Nitrogen, phosphorus and potassium content in maize grain was significantly affected by the year of the experiment. Mineral fertilization had impact mostly on the nitrogen content of the grain, which was the highest in V3 variant, accepted as optimal – 0.66% on average.

scholarly journals Pengaruh Pupuk Majemuk NPKS dan NPK terhadap Pertumbuhan dan Hasil Padi Sawah pada Inceptisol

2016 ◽  
Vol 34 (3) ◽  
pp. 175
Author(s):  
Wiwik Hartatik ◽  
Ladiyani Retno Widowati
Keyword(s):  
Nutrient Uptake ◽  
Block Design ◽  
Chemical Properties ◽  
Dry Weight ◽  
Grain Weight ◽  
Production Performance ◽  
Growth And Yield ◽  
Fertilizer Treatment ◽  
Optimum Rate ◽  
Compound Fertilizer

<p>Rate of NPK fertilization on rice using NPK compound fertilizer needs to consider soil nutrient status and plant nutrient requirement. The research was aimed to determine the optimum rate of compound fertilizer and the effect of enriched S nutrient of NPKS compound (15-15-15-5S) and NPK compound fertilizer (15-15-15) on the growth and yield of rice. The experiments were conducted at two sites in Galuga, Ciampea Bogor, West Java from April to September 2013, using randomised complete block design with 3 replications. Experiment at site I consisted of 9 treatments: six levels of fertilizers NPKS i.e. 0; 150; 300; 450; 600; and 750 kg/ha, standard fertilizer, NPK compound fertilizer equivalent to standard, and standard fertilizer plus S. Rate of urea, SP-36, and KCl for standard fertilizer treatment was respectively 250, 75, and 50 kg/ha. At site II the treatments consisted of 6 levels of NPK compound fertilizer i.e. 0; 150; 300; 450; 600; and 750 kg/ha and the standard fertilizer with rate of 250 kg/ha of urea, 50 kg/ha SP-36, and 75 kg/ha KCl. Plot size was 4 m x 5 m planted with Ciherang variety. Data collection included chemical properties of soil before and after the experiment, plant height, number of tillers, straw weight, and dry grain weight and the nutrient uptake. The effectiveness of fertilizer was calculated by RAE (Relative Agronomic Effectiveness). Results showed that fertilizer NPKS (15-15-15-5S) at 600 kg/ha effectively increased dry grain weight from 3.63 t/ha to 4.67 t/ha, but was not significantly different from a standard fertilizer treatment. It increased dry grain weight by 29% compared to control. NPK fertilizer (15-15-15) effectively promoted growth and dry grain weight equivalent to standard fertilizer at rate of 300-750 kgha. The optimum rate of NPK compound fertilizer (15-15-15) was 440 kg/ha as was shown with the production performance of 4.12 t/ha with RAE by 58%. NPKS compound fertilizer with rate of 750 kg/ha showed the highest uptake of N, P, and K nutrients and significantly increased the available P in the soil. Whereas NPK compound fertilizer with a rate of 600 kg/ha indicated the highest P nutrient uptake. Fertilizer enrichment with sulfur on NPKS fertilizer (15-15-15-5S) did not significant affect on grain dry weight.</p>

scholarly journals Above and Belowground Growth of Corymbia maculata in a Constructed Soil: The Effect of Profile Design and Organic Amendment

2010 ◽  
Vol 36 (1) ◽  
pp. 11-17
Author(s):  
Karen Smith ◽  
Peter May ◽  
Robert White
Keyword(s):  
Organic Matter ◽  
Root Length ◽  
Organic Amendment ◽  
Root Length Density ◽  
Dry Weight ◽  
Nutrient Status ◽  
Fertilizer Treatment ◽  
Coir Fiber ◽  
Growth Responses ◽  
Profile Design

Spotted gum (Corymbia maculata (Hook.) K.D. Hill & L.A.S. Johnson), a common street tree in southern Australian cities, was used to assess growth responses to variations in profile design and organic amendment of constructed soils. Aboveground growth responses were total stem dry weight and foliar nutrient content. The belowground response was root length density. Soil profiles were constructed of sand, amended with either coir fiber, composted biosolids or composted green waste, at rates of 0, 5, 10 or 20% by volume. The profiles were either layered, with a 150 mm (6 in) organic-amended surface layer, or uniform, with amendment of the entire profile. A single fertilizer treatment was applied to all profiles. Shoot dry weight was only affected by organic matter type with the greatest growth in sand amended with composted biosolids. Foliage P and K content were affected by amendment but foliage N was not. Profile design affected root length density and distribution. Trees in uniform profiles had greater root length density, and a more uniform distribution of roots, especially with compost amendments. Above- and belowground growth increases are thought to be due to increased nutrient status resulting from organic matter mineralization.

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