Nutrient Content of the Aboveground Tissue of 12-week-old Loblolly Pine Intraprovenance and Interprovenance Crosses

1975 ◽  
Vol 5 (4) ◽  
pp. 592-598 ◽  
Author(s):  
R. A. Woessner ◽  
C. B. Davey ◽  
B. E. Crabtree ◽  
J. D. Gregory
Keyword(s):  
Loblolly Pine ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Good Linear ◽  
Available Nutrients ◽  
Seed Sources ◽  
Linear Relationships ◽  
Aboveground Tissue

Nutrient content (P, K, Ca, Mg) of the aboveground tissue of a series of full-sib loblolly crosses was found to vary by genotype. Variability among and within seed sources is indicated for the ability to absorb Ca and Mg. Absorption of P and K was not found to be dependent on seed source, but the full-sib crosses differ. Good linear relationships were found between plant dry weight and weight of element but not between plant dry weight and percentage of element. Certain highly efficient crosses can be expected to be good producers of dry matter on sites low in available nutrients.

The effect of genotype on biomass and nutrient content in 11-year-old loblolly pine plantations

1979 ◽  
Vol 9 (2) ◽  
pp. 224-230 ◽  
Author(s):  
P. E. Pope
Keyword(s):  
Loblolly Pine ◽  
Plant Biomass ◽  
Soil Nutrient ◽  
Dry Weight ◽  
Nutrient Content ◽  
Seed Source ◽  
Elemental Content ◽  
Total N ◽  
Seed Sources ◽  
Hilly Region

Dry weights and nutrient contents of all aboveground biomass components were estimated for four seed sources of 11-year-old loblolly pine (Pinustaeda L.) grown in plantations of the same spacing on an old-field site of high quality in the hilly region of north-central Arkansas, U.S.A. Soil nutrient content was estimated to a depth of 0.61 m. Stand data averaged over all seeds sources are in agreement with published reports for dry weight and nutrient accumulation for loblolly pine if differences associated with seasonal variation are considered. Seed source significantly affected total dry matter and nutrient accumulations. Estimated total aboveground mean annual accumulation of biomass for the four seed sources ranged from 5.99 × 103 to 11.17 × 103 kg/ha per year. Elemental accumulation (kilograms per hectare per year) ranged from 14.06 to 23.66 for N, 1.54 to 3.45 for P, and 6.96 to 18.43 for K. On the average, trees comprise 84% of the aboveground plant biomass and contain 76% of the N, 77% of the P, and 90%, of the K associated with plant tissue. The significant influence of seed source on these stand values can affect the potential impact of short rotation, total tree harvesting on long-term site productivity. The elemental content of the tree biomass ranged from 7 to 11% of the total N, 20 to 35% of the P, and 14 to 30% of the K in the soil–litter–plant system.

Growth and Wood Properties in a Carolina Sandhills Pine Seed Source Study

1992 ◽  
Vol 16 (4) ◽  
pp. 164-169 ◽  
Author(s):  
J. B. Jett ◽  
W. M. Guiness
Keyword(s):  
South Carolina ◽  
Specific Gravity ◽  
Loblolly Pine ◽  
Wood Quality ◽  
Dry Weight ◽  
Wood Properties ◽  
Seed Source ◽  
Growing Seasons ◽  
Seed Sources ◽  
Excellent Growth

Abstract Eight pine sources were planted on a sandhills site in South Carolina. Total height, dbh, wood specific gravity, tracheid length, and fusiform rust (Cronartium quercum [Berk.] Miyabe ex. Shirai f. sp. fusiforme) infection were evaluated following 17 growing seasons. The Choctawhatcheesource of sand pine (Pinus clausa [Chapm.] Vasey) is apparently well adapted to the deep sands of the Carolina sandhills and exhibited superior height and diameter growth to slash pine, two local sources of loblolly pine (P. taeda L.), and two sources of Virginia pine (P. virginiana Mill.). A combination of excellent growth and reasonable survival resulted in significantly more cubic foot volume per acre than the other seed sources or species included in this study. Despite having the lowest weighted specific gravity of all sources in this planting, the Choctawhatchee sand pineproduced more than twice as much dry weight per acre than any other source. A single open-pollinated family of drought-hardy loblolly pine from Bastrop County, TX, displayed excellent growth, survival, rust resistance, and wood quality. Its performance warrants a more careful and wider evaluationof this seed source for use on these difficult sandhills sites in the Carolinas. South. J. Appl. For. 16(4):164-169

scholarly journals Seasonal Partitioning of Leaf and Fruit Potassium and Fruit Dry Matter in French Prune Trees at Various Potassium Levels

1991 ◽  
Vol 116 (6) ◽  
pp. 981-986 ◽  
Author(s):  
F.J.A. Niederholzer ◽  
R.M. Carlson ◽  
K. Uriu ◽  
N.H. Willits ◽  
J.P. Pearson
Keyword(s):  
Dry Matter ◽  
Dry Weight ◽  
Fruit Growth ◽  
Growth Stages ◽  
Dry Matter Accumulation ◽  
Accumulation Rates ◽  
Mature Trees ◽  
Linear Relationships ◽  
Weight Yield ◽  
High K

A study was undertaken to determine the seasonal dynamics of leaf and fruit K content and the influence of tree K status and fruit growth on leaf and fruit K accumulation rates in French prune (Prunus domestics L. cv. d'Agen). Mature trees in a commercial orchard were treated with various rates of K2 SO4. (O to ≈20 kg/tree) in the fall. Fruit dry weight yield per tree at harvest and fruit K content were higher for high-K trees, but fruit percent K (by dry weight) was ≈1.0% for all trees. Leaf scorch and subsequent abscission severely reduced the canopy of K-deficient trees. Significant positive linear relationships between leaf and fruit K accumulation rates existed for the periods of 28 Apr.-28 May (May) and 28 May-7 July (June). A significant negative linear relationship existed between these two criteria from 7 July-3 Aug. (July). May (0.237 mg K per fruit-day) and July (0.267 mg K per fruit-day) mean fruit K accumulation rates were similar, but both were significantly higher (P = 0.001) than those for June (0.140 mg K per fruit-day). Mean leaf K accumulation rates for May (- 0.007 mg K per leaf-day) and July (-0.010 mg K per leaf-day) were similar, but both were significantly (P = 0.001) less than for June (0.005 mg K per leaf-day). Potassium per fruit accumulation was highest in trees with highest K status. Periods of net leaf K efflux and influx did not precisely correlate with fruit growth stages measured by fruit dry weight. The period of lowest fruit K accumulation (28 May-7 July) coincided with the period of maximum dry matter accumulation by the kernel. After 7 July, all increases in fruit dry weight and K content were due to mesocarp growth.

scholarly journals Impact of dry sludges and sludge biochar on height and dry matter of Solanum lycopersicum L.

2020 ◽  
Vol 38 (2) ◽  
pp. 242-252
Author(s):  
Giovanni Reyes-Moreno ◽  
Jairo Leonardo Cuervo-Andrade ◽  
Aquiles Enrique Darghan-Contreras ◽  
Néstor Julián Cárdenas-Pardo
Keyword(s):  
Solanum Lycopersicum ◽  
Plant Height ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Content ◽  
Solanum Lycopersicum L ◽  
Pollution Problem ◽  
Incomplete Factorial Design ◽  
Physical And Chemical ◽  
Different Doses

The generation of sludge as anthropic waste is a fundamental pollution problem. However, its conversion to biochar can be an alternative to conventional fertilization for its management and use in agriculture. In this research, we evaluated the effect of the application of different doses of dry sludge (DS) and biochar of pyrolyzed sludge (PS) on the height and dry matter of a tomato (Solanum lycopersicum L.) crop and the nutrient content in the substrate. The biochar was made by rapid pyrolysis, and the substrate and the dry matter of plants were analyzed by different physical and chemical methods. An evaluation of 11 treatments was carried out in allometric measurements of plants and foliar dry matter, in three replicates with two materials (DS and PS) added to the substrate at different levels. The plant height and dry weight were evaluated using an incomplete factorial design in a completely randomized arrangement by performing statistical analysis of multivariate variance. An increase in plant height and dry weight was observed when the doses of DS and PS were increased; however, there were no statistical differences between the two materials. The amount of carbon, organic matter, and Ca concentrations in the dry leaf weight were increased with the addition of DS and PS. Likewise, the use of these materials as conditioners or amendments to agricultural soil at doses of 10-15 t ha-1 may be viable and can contribute to reducing environmental externalities through the use of these anthropic waste materials.

UTILIZATION OF SUGAR CANE FINAL MOLASSES BY THE PIG: COMPOSITION OF ILEAL DIGESTA

1984 ◽  
Vol 64 (1) ◽  
pp. 147-158 ◽  
Author(s):  
A. PEREZ ◽  
VILDA FIGUEROA ◽  
J. LY ◽  
A. MAYLIN ◽  
H. S. BAYLEY
Keyword(s):  
Sugar Cane ◽  
Dry Matter ◽  
Water Flux ◽  
Live Weight ◽  
Dry Weight ◽  
Weight Basis ◽  
Torula Yeast ◽  
Linear Relationships ◽  
Tract Function ◽  
Food And Water Intake

Castrated male pigs of 30-kg live weight were fitted with re-entrant ileal cannulae using a surgical procedure which minimized disruption of digestive tract function. Three diets were investigated: sugar cane final molasses, a mixture of molasses and torula yeast, 3:1 on a dry weight basis, and a mixture of molasses and processed food industry by-products: (garbage), 3:1 on a dry weight basis. The pigs were trained to consume their diet in a single daily meal period of 30 min. The ileal digesta were collected, measured and sampled every 30 min for 24 h following the meal. Two collections were made for each diet, using a group of four pigs for both the first and second diets, and another group of four pigs for the third diet. Food and water intake, and ileal digesta flow varied greatly between pigs but there were linear relationships between the volume of ileal digesta and the dry matter intakes: the regression coefficient being 11,6 and 3 mL/g dry matter consumed for the molasses, molasses plus yeast, or molasses plus garbage, respectively. Regression analysis of digesta flux and digesta composition showed that the ash content of the digesta was directly related to the water flux through the terminal ileum. Carbohydrate constituted almost half of the organic matter in the ileal digesta from the molasses diet, and 41% of this was sucrose, 57% fructose and 2% glucose. This indicated incomplete hydrolysis of the sucrose and incomplete absorption of the fructose, within the small intestine. Key words: Swine, molasses, ileal cannulation, digesta composition, torula yeast, garbage

Retrospective shoot growth analysis for three seed sources of loblolly pine

1991 ◽  
Vol 21 (3) ◽  
pp. 306-317 ◽  
Author(s):  
Constance A. Harrington
Keyword(s):  
Loblolly Pine ◽  
Height Growth ◽  
Growth Patterns ◽  
Seed Source ◽  
Tree Age ◽  
Annual Number ◽  
Cumulative Number ◽  
Stem Analysis ◽  
Seed Sources ◽  
Number Of Cycles

Height growth by year and by individual cycle on the terminal shoot was reconstructed from stem analysis for 45 loblolly pine (Pinustaeda L.) trees that were 35 years old. Sample trees represented three seed sources (Clark County, AR; Livingston Parish, LA; and Onslow County, NC), each of which had been planted at three installations (Arkadelphia, AR; Poplarville, MS; and New Bern, NC) located in the general geographic area where one of the seed sources had been collected. Stem analysis was facilitated by the development of a staining technique that enhanced recognition of the boundaries between individual height-growth cycles and between years. Both annual height growth and number of cycles produced varied with tree age, seed source, and installation. Number of cycles produced per year ranged from two to seven; maximum annual production of cycles per seed source was achieved between ages 3 and 10 years. Even between ages 30 and 35, trees still exhibited polycyclic behavior, producing two to five cycles annually. Annual height growth was greatest between ages 4 and 15; height growth declined with age more rapidly than annual number of cycles. The relationship at each installation between cumulative height and cumulative number of cycles showed that the tallest seed source (Onslow in all cases) was the one that had produced the greatest number of cycles. Shorter trees at the poorest site resulted from lower numbers of cycles produced and, particularly after the production of 50 to 65 cycles, shorter mean cycle length. For all three seed sources, mean height was greatest at the installation where the trees produced the most cycles. Height-growth curves for two of the installations crossed, demonstrating differences in height-growth patterns related to site characteristics.

Effects of Water-Nitrogen Coupling on Dry Matter and Nutrient Accumulation of Flue-Cured Tobacco

2014 ◽  
Vol 1073-1076 ◽  
pp. 1620-1623
Author(s):  
Xiao Hou Shao ◽  
Mao Mao Hou ◽  
Jing Nan Chen ◽  
You Bo Yuan ◽  
Fu Zhang Ding
Keyword(s):  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Tobacco Plant ◽  
Dry Weight ◽  
Nutrient Content ◽  
Dry Matter Accumulation ◽  
Nutrient Accumulation ◽  
Irrigation Amount ◽  
Nitrogen Coupling ◽  
Weight Proportion

In order to explore the effects of water-nitrogen coupling on dry matter and nutrient accumulation of flue-cured tobacco, 9 treatments with different lowest limits and nitrogen fertilizer amount were designed, and the distribution and accumulation of dry matter and nutrient (N, P and K) of flue-cured tobaccos under water-nitrogen coupling treatments were observed. Results showed that: (1) High irrigation amount could not certainly increase the dry matter accumulation of tobacco root, but which was beneficial to the dry matter accumulation of whole tobacco plant. (2) Dry weight proportion of flue-cured tobacco leaves was highest, which was above 55% among the treatments. (3) Higher water and nitrogen promoted the nutrient accumulation of flue-cured tobaccos, nutrient content of W3N3, W3N2 and W2N2 was higher compared to other treatments.

Seed Source Variation in Medicinal Tree – Azadirachta indica A. Juss. (Neem)

2016 ◽  
Vol 23 (3) ◽  
pp. 135-138
Author(s):  
U. Parmar ◽  
Bimal Desai ◽  
J. Chavda ◽  
M. Tandel ◽  
S. Jha
Keyword(s):  
Azadirachta Indica ◽  
Seedling Survival ◽  
Tree Height ◽  
Dry Weight ◽  
Seed Source ◽  
Medicinal And Aromatic Plants ◽  
Statistical Tool ◽  
Medicinal Tree ◽  
Trunk Diameter ◽  
Seed Sources

Azadirachta indica A. Juss. is a well known medicinal plant with various therapeutic uses. It cures numbers of human as well as animal ailments and it has been used in our ancient systems of medicine. A present study was laid out at Model Nursery on Medicinal and Aromatic Plants, ACHF, NAU, Navsari (AES Zone III) during the July, 2012 to February, 2013. Seeds were collected from the 4 various geographical locations and 10 places Viz. Central Gujarat 02 (Dahod and Kheda), South Gujarat 04 (Vyara, Netrang, Rajpipla and Navsari), North Gujarat 02 (Palanpur and Modasa) and Saurashtra 02 (Amreli and Junagadh) and each districts treated as separate treatment. An investigation was laid out under the CRD as statistical tool. The seed sources of Amreli district was found best for the tree height (23.47 cm), tree trunk diameter (2.55 m), seed diameter (5.02 mm), seed length (20.53 cm), 100 seed weight (24.49 gm) and azadirachtin content (34.33 %). Similarly, seed source of Kheda district showed better response for fresh weight of seedling (17.80 g), dry weight of seedling (6.31 g), germination percentage (85.55 %), seedling survival percentage (81.55 %), root length (14.53 cm) and collar diameter (0.36 mm). However, seed source of Palanpur district was superior over the other seed sources in context to maximum shoot length (26.16 cm) and number of leaves per seedling (24.87). Hence, it can be concluded that the seeds source from different location were shown better performance in context to various morphological character.

Estimating nutrient content of animal slurries using electrical conductivity

1995 ◽  
Vol 125 (2) ◽  
pp. 233-238 ◽  
Author(s):  
R. J. Stevens ◽  
C. J. O'bric ◽  
O. T. Carton
Keyword(s):  
Electrical Conductivity ◽  
Dry Matter ◽  
Nutrient Content ◽  
Molar Basis ◽  
Linear Relationships ◽  
P Content ◽  
Commercial Farms ◽  
On Farm ◽  
Dominant Cation ◽  
Total Concentrations

SUMMARYElectrical conductivity was evaluated for estimating the nutrient content of cattle and pig slurries. Slurry samples were collected in 1991 from the storage tanks of 48 cattle and 10 pig units on commercial farms in Ireland. Samples were analysed for NH4+ and total concentrations of Na, K, Ca, Mg and P. Electrical conductivity (EC) was measured on raw slurries (ECraw) and on slurries diluted by 10 with water (ECdilute). Relationships between EC and nutrient content were examined by correlation and linear regression analyses.In both slurry types, NH4+ was the dominant cation with K+ second in importance on a molar basis. Within each slurry type, the concentration of each of these cations was significantly correlated with EC. Using ECdilute gave more accurate predictions of concentrations than ECraw, but even ECraw was a better predictor than dry matter (DM) content. The linear relationships between NH4+ or K+ and ECdilute explained > 82% of the variance within each slurry type. The P content in slurries was related better to DM than to EC. Since EC measurement could be by cheap, robust meters, its potential for on-farm use deserves further investigation.

Mean stem size and total volume development of various loblolly pine seed sources planted at one location

1989 ◽  
Vol 19 (3) ◽  
pp. 396-400 ◽  
Author(s):  
M. A. Buford
Keyword(s):  
Loblolly Pine ◽  
Unit Area ◽  
Rate Of Change ◽  
Seed Source ◽  
Stem Volume ◽  
Stem Size ◽  
Seed Sources ◽  
Volume Production ◽  
Source Study ◽  
Number Of Stems

Data from one location of the loblolly phase of the Southwide Pine Seed Source Study were analyzed to determine the effect of seed source on the self-thinning trajectory for loblolly pine (Pinustaeda L.). Stand trajectories for mean stem size and total volume were examined. Seed source affected the level of both the mean stem size and total volume per unit area trajectories. The rate of change of mean stem size and of total volume per unit decrease in number of stems did not appear to be affected by seed source. The levels of the stand trajectories for total volume per unit area were positively correlated with the site indexes of the seed sources at this location. These results indicate that site productivity of loblolly pine, measured by total volume production per unit area and mean stem volume, varies by seed source.

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