Function of Leaves in Soybean Plants : 1. Growth, dry matter, nitrogen, phosphorus, potassium and carbohydrate contents of each leaf

1962 ◽  
Vol 30 (3) ◽  
pp. 253-256
Author(s):  
Hisakazu OIZUMI ◽  
Keiji NISHIIRI ◽  
Isami KATSURA
Keyword(s):  
Dry Matter ◽  
Soybean Plants ◽  
Nitrogen Phosphorus ◽  
Carbohydrate Contents

The digestibility and the nitrogen, phosphorus and ash contents of the leaves of some Australian trees and shrubs

1973 ◽  
Vol 13 (62) ◽  
pp. 245 ◽  
Author(s):  
MN McLeod
Keyword(s):  
Significant Variation ◽  
Dry Matter ◽  
Mature Trees ◽  
Lower Range ◽  
Nitrogen Levels ◽  
Dry Matter Digestibility ◽  
Individual Trees ◽  
Trees And Shrubs ◽  
Nitrogen Phosphorus

The dry matter digestibility measured in vitro and the levels of nitrogen, phosphorus and ash were determined on the leaves from mature trees of twenty-one species growing in two arboreta in southeastern Queensland and known to be grazed by animals. Most of the leaf samples had digestibilities in the lower range (68 per cent samples < 50 per cent D.M.D.) and low ash levels (65 per cent samples < 7 per cent ash). Nitrogen levels were satisfactory (86 per cent samples in range 1.5-3.0 per cent N) but the level of phosphorus tended to be low (84 per cent samples < 0.20 per cent P). Statistically significant variation between individual trees and seasons was found with some species.

Distribution of Biomass, Nitrogen, Phosphorus and Other Nutrients in Banksia marginata and B. ornata Shoots of Different Ages After Fire.

1986 ◽  
Vol 34 (6) ◽  
pp. 709 ◽  
Author(s):  
RH Groves ◽  
PJ Hocking ◽  
A Mcmahon
Keyword(s):  
National Park ◽  
Dry Matter ◽  
Lateral Roots ◽  
South Australia ◽  
Distribution Patterns ◽  
Nutrient Accumulation ◽  
Nitrogen And Phosphorus ◽  
Vegetative Organs ◽  
Western Victoria ◽  
Nitrogen Phosphorus

The heathland form of Banksia marginata Cav. regenerates rarely from seed but commonly by resprout- ing from buds on lateral roots, whereas Banksia ornata F. Muell. regenerates only from seed, usually released after fire. The two species co-occur in heath vegetation on nutrient-poor soils in south-eastern South Australia and western Victoria. Shoots were sampled from stands of B. marginata aged from 1 to 25 years and of B. ornata aged from 1 to 50+ years after fire in the Little Desert National Park, western Victoria. B. marginata, the resprouter, distributed a greater proportion of the total shoot dry matter and content of all nutrients to vegetative growth over its shorter life span than B. ornata, the non-sprouter. About 50% of the total phosphorus in B. ornata shoots at 50+ years was present in cones (including seeds) compared with only about 20% in B. marginata shoots at a comparable stage of senescence (25 years). This difference between the species was also true to a lesser degree for nitrogen. There were considerable differences between other nutrients in their distribution patterns in shoots. Nutrients could be grouped together on the basis of distribution in shoots more satisfactorily than on presumed physio- logical roles. Stems were major sites of nutrient accumulation in both species. The content of a particular nutrient in seeds as a proportion of the content in the living parts of the shoot ranged from 0.03% (Na, Mn) to 2.0% (P) in B. marginata, and from 0.3% (Na) to as high as 31% (P) in B. ornata. Concen- trations of all nutrients except sodium were much higher in seeds than in the woody cones or vegetative organs of both species; seeds of B. ornata were particularly rich in calcium and manganese. We conclude that the different patterns of distribution of biomass and nutrients, especially nitrogen and phosphorus, within shoots of the two species reflect their different regenerative modes after fire. Introduction Phosphorus and, to a lesser extent, nitrogen limit the growth of sclerophyllous shrubs on nutrient-poor soils in southern Australia

scholarly journals Growth and vegetative development of soybean plants in soil type Concrectionary Petric Plinthosol

2019 ◽  
pp. 351
Author(s):  
Marcio Nikkel ◽  
Saulo De Oliveira Lima
Keyword(s):  
Soil Type ◽  
Growth And Development ◽  
Total Mass ◽  
Dry Matter ◽  
Point Of View ◽  
Depth Information ◽  
Economic Interest ◽  
Vegetative Development ◽  
Presence And Absence ◽  
Soybean Plants

The central-north of Brazil is a region with strong presence of concrectionary soil, whose supposed disadvantages from the agronomic point of view, do not prevent their use in agriculture. However, more in-depth information about the behavior of crops of agricultural interest cultivated in this type of soil is few. Due to the observation of agricultural stands in this type of soil, it was hypothesized that plinthite ironstones concretions negatively interfere in the development of crops of agro-economic interest. The objective was to verify the growth and development of soybean cultivated in soil with the presence and absence of plinthite ironstones. Concretionary Petric Plinthosol were collected in the 0-0,20 m layer and part of the soil was sieved so that concretions larger than 3.10 mm in diameter were removed, thus leaving two treatments, soil with and without plinthite ironstones. Morphological evaluations were performed during their phenological phase. Soybean grown in soil without ironstones showed higher growth at 32 and 48 DAE and more leaflets when compared to soy crop grown in soil with ironstones. As for dry matter, soybean grown in soil without ironstones showed more values for aerial, root and total mass as well for aerial root rate when compared to soybean grown in soil with ironstones. Plinthite ironstones interfere with the growth and/or vegetative development of soybeans. Soybean has less vegetative development when grown in soil with plinthite ironstone concretions.

scholarly journals Assimilate partitioning and phytotoxicity in soybean plants treated with herbicides

1996 ◽  
Vol 14 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Ricardo A. Marenco ◽  
Nei F. Lopes
Keyword(s):  
Plant Height ◽  
Dry Matter ◽  
Growth Stage ◽  
Plant Part ◽  
Dry Matter Accumulation ◽  
Assimilate Partitioning ◽  
Developing Seeds ◽  
Number Of Leaves ◽  
Stems And Leaves ◽  
Soybean Plants

To investigate the effects of trifluralin, chlorimuron and clomazone on morphology and assimilate partitioning during soybean development, plants were grown in a greenhouse and sampled at 14-day intervals. Clomazone reduced stem and leaf dry matter accumulation at 14 days after emergence (DAE), while trifluralin and chlorimuron reduced plant part dry matter accumulation up to 28 DAE. The number of leaves, plant height, mass and number of pods and seeds, and the shoot/root ratio were not influenced by the herbicides. Roots, stems and leaves were the preferred sinks up to the R2 growth stage, while pods and developing seeds became the preferred sinks later. This order was not altered by the herbicides.

Determining the content of nitrogen and some macroelements in the dry mass of perennial leguminous plants

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Željko Lakić ◽  
Mirjana Žabić ◽  
Tihomir Predić
Keyword(s):  
Dry Matter ◽  
Red Clover ◽  
Optimal Growth ◽  
Dry Mass ◽  
First Year ◽  
Random Block ◽  
Beginning Of Flowering ◽  
Set Up ◽  
Perennial Legumes ◽  
Nitrogen Phosphorus

The aim of this study was to determine the content of elements N, P, K, Ca, and Mg in the dry mass of perennial fodder legumes, mowed in the optimal growth phase. The experiment with perennial legumes of alfalfa (Medicago sativa), red clover (Trifolium pretense) and bird's-foot trefoil (Lotus corniculatus L.) was set up as a random block system in four replicates on valley-brown soil and was conducted for two years. The green mass of perennial legumes in the first and second mowing was harvested at the end of budding/ beginning of flowering phase. In the third and fourth regrowth, mowing of the biomass was done after 5 weeks. Immediately after each mowing, representative sample of green biomass was taken from each replicate of each legume tested. The content of nitrogen, phosphorus, potassium, calcium, and magnesium in the dry plant material was determined. The content of nitrogen and potassium in the fodder of alfalfa and red clover was higher in the first year of the study, which was not the case for bird's-foot trefoil. The dry matter of alfalfa on average had the highest content of nitrogen (39.8 g kg-1 DM) and calcium (19.6 g kg-1 DM), bird's-foot trefoil of phosphorus (10.6 g kg-1 DM) and potassium (26.1 g kg-1 DM), and red clover of magnesium (3.7 g kg-1 DM). In the dry mass of bird's-foot trefoil the average content of nitrogen was 39.0 g kg-1 DM, phosphorus 10.6 g kg-1 DM, potassium 26.1 g kg-1 DM, calcium 15.7 g kg-1 DM, and magnesium 3.5 g kg-1 DM.

scholarly journals Influence of Burner Position on Temperature Distribution in Soybean Flaming

Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 391 ◽  
Author(s):  
Miloš Rajković ◽  
Goran Malidža ◽  
Strahinja Stepanović ◽  
Marko Kostić ◽  
Kristina Petrović ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Dry Matter ◽  
Growth Stage ◽  
Flame Temperature ◽  
Soil Surface ◽  
High Variability ◽  
Temperature Distributions ◽  
Soybean Canopy ◽  
Soybean Plants ◽  
Surface Flame

The main objective of this study was to identify optimal burner orientation for a newly designed flame cultivator by quantifying the flame temperature distributions of cross, back, and parallel position of burners at different heights of the soybean canopy (distance from the soil surface). Flame temperatures were measured within-row for three burner orientations at seven propane doses (20–100 kg/ha) and eight different canopy heights (0–18 cm above soil surface). Soybean plants in V3 growth stage were flamed with the same doses and burner orientations, and 28 days after treatment (DAT) crop injury (0%–100%), plant height (cm), dry matter (g) and grain yield (t/ha) were assessed. All three burner orientations had high flame temperatures at lower canopy heights (<6 cm high) that gradually decreased with increasing canopy height (6–18 cm). Measured temperatures ranged from 33 to 234 ℃ for cross flaming, 29 to 269 ℃ for back flaming and 23 to 155 ℃ for parallel flaming, with high variability in temperature patterns. Back flaming generated flame temperatures above 100℃ at a lower propane dose (27 kg/ha) compared to cross and parallel flaming (40 and 50 kg/ha). For all tested parameters, parallel and cross flaming had better impact on soybeans than back flaming, but for weed control in crop rows, cross flaming is recommended.

Growing season changes in the concentration and distribution of macroelements in Willamette red raspberry plant parts

1994 ◽  
Vol 74 (4) ◽  
pp. 833-839 ◽  
Author(s):  
C. G. Kowalenko
Keyword(s):  
Dry Matter ◽  
Rubus Idaeus ◽  
Tissue Analysis ◽  
Plant Analysis ◽  
Red Raspberry ◽  
Plant Parts ◽  
Fertilizer Recommendations ◽  
Calcium Magnesium ◽  
Nitrogen Phosphorus ◽  
Key Words Nitrogen

Nitrogen, P, K, Ca, Mg and Na concentrations and accumulations in Willamette red raspberry (Rubus idaeus L.) plant parts were measured in a field study to identify a potential plant-analysis-based method for evaluating site-specific fertilizer requirements. Dry matter and macroelements accumulated steadily in new canes over the season, increased early to a stable amount in floricane laterals and ripe berries, increased and then decreased in leaves and remained stable in stems. Macroelement accumulation patterns were generally similar to dry matter accumulations. The amounts of N and K that accumulated in ripe berries were similar and about eight times greater than P, Ca and Mg. Macroelement concentrations of floricane stems, laterals and berries were more stable than in leaves, making them potentially more suitable than leaves for developing tissue analysis for fertilizer recommendations. Key words: Nitrogen, phosphorus, potassium, calcium, magnesium, sodium, Rubus idaeus

Sign in / Sign up

Export Citation Format

Share Document