scholarly journals Influence of Using Various Sugarcane Leaves and Parts of the Sugarcane Leaf on Chemical Composition

1969 ◽  
Vol 51 (1) ◽  
pp. 22-28
Author(s):  
George Samuels
Keyword(s):  
Leaf Blade ◽  
Phosphorus Content ◽  
Critical Factor ◽  
Nutrient Content ◽  
Leaf Sheath ◽  
Leaf Number ◽  
Nitrogen And Phosphorus ◽  
Leaf Sample ◽  
Sugarcane Plant ◽  
Foliar Diagnosis

The leaf sample is a vital and critical factor in a sugarcane foliar-diagnosis program. For, no matter how accurate the chemical analyses, an accurate diagnosis of the sugarcane's fertilizer status is impossible if leaf samples are taken improperly. Variations were found in the nutrient content of the various leaves of the sugarcane plant, as well as variation within the leaf itself. Some of the variations encountered were: 1. The nitrogen and phosphorus contents of the leaf blade were higher than those of the leaf sheath; the reverse was true for potassium. 2. The nitrogen content of the leaf showed only a slight tendency to increase with increasing leaf number. Phosphorus, potassium, and sheath moisture dropped rapidly with increasing leaf number. 3. When the midrib of the leaf blade was eliminated, there was an increase in leaf-blade nitrogen and phosphorus, and a decrease in potassium content. 4. There was considerable variation in the nutrient content of the leaf as we moved from its base to tip. Nitrogen and phosphorus content increased rapidly from base to tip; the reverse was true for potassium.

scholarly journals The nitrogen content of sugarcane as influenced by moisture and age.

1969 ◽  
Vol 37 (1) ◽  
pp. 1-12
Author(s):  
George Samuels ◽  
Bernardo G. Capó ◽  
Ishver S. Bangdiwala
Keyword(s):  
Puerto Rico ◽  
Nitrogen Content ◽  
Leaf Blade ◽  
Close Agreement ◽  
Leaf Tissue ◽  
Leaf Sheath ◽  
Leaf Sample ◽  
Sugarcane Plant ◽  
Rainfall Variation ◽  
Dominant Influence

Moisture and age have a dominant influence on the nitrogen content of the sugarcane plant. A study of these factors revealed the following: 1. The nitrogen content of the leaf sample varied from year to year, despite constant cultural and fertilizer treatments. 2. A correction of nitrogen content for moisture eliminated the majority of the fluctuation of nitrogen in the leaf samples. 3. In most cases, leaf-sheath moisture and leaf-blade moisture gave the best correction for nitrogen variation, but rainfall variation could be used as a correction factor. 4. The nitrogen content of the leaf sample increased with increasing moisture content of the tissue; this increase was linear. 5. The nitrogen content of the leaf tissue decreased with increasing age of the cane plant. Thus a decrease in nitrogen is approximately linear to an age of about 10 to 11 months for sugarcane in Puerto Rico. After 11 months the decrease tends to level off. This relationship was also observed for Hawaiian data. 6. The factors of moisture and age appear to be the most dominant in influencing the nitrogen content of the cane-leaf sample. A correction for both moisture and age in the leaf samples taken, in many cases explained over 90 percent of the variation of the nitrogen in the sample. 7. Adjusted leaf-sheath nitrogen values were obtained from an equation using sheath moisture and age of sample. The adjusted values were in very close agreement.

scholarly journals Influence of Height of Cane and Leaf Stage at Time of Sampling on Leaf-Nutrient Content of Sugarcane

1969 ◽  
Vol 44 (1) ◽  
pp. 11-15
Author(s):  
G. Samuels ◽  
S. Alers-Alers ◽  
P. Landrau, Jr.
Keyword(s):  
Nutrient Content ◽  
Leaf Nitrogen ◽  
Sampling Time ◽  
Nitrogen And Phosphorus ◽  
Leaf Sample ◽  
Leaf Stage ◽  
Fertilizer Experiment ◽  
Significant Difference ◽  
Leaf Sampling ◽  
Number Of Leaves

Leaf samples of sugarcane were taken from a fertilizer experiment at Río Piedras with varieties B. 41227 and M. 336 to determine whether the height of cane or the number of leaves present at leaf-sampling time influenced the nutrient content of the leaf sample. It was found that: 1. There was no significant difference in leaf nitrogen or potassium from cane tillers aged 3 months with heights of 12, 24, and 36 inches. 2. Variations in cane height at time of sampling did influence leaf-phosphorus values; there were increases in cane height. 3. The number of leaves present at time of sampling (7-13 weeks) did not influence leaf-nutrient values in general, except for nitrogen and phosphorus at 9 weeks of age. Here the trends of this influence with the two varieties studied were contrary.

scholarly journals UTILIZATION OF TOFU AND SAGO PULP AS ORGANIC LIQUID FERTILIZER AND ITS APPLICATION TO MUSTARD PLANT

2020 ◽  
Vol 1 (1) ◽  
pp. 63-69
Author(s):  
Sunarti Sunarti ◽  
Romelos Untailawan
Keyword(s):  
Leaf Blade ◽  
Phosphorus Content ◽  
Organic Liquid ◽  
Organic Fertilizer ◽  
Leaf Length ◽  
Nitrogen And Phosphorus ◽  
Nitrogen Levels ◽  
Mustard Plant ◽  
Macro Nutrients

Tofu waste and sago pulp are waste that has the potential to pollute the environment because it creates unpleasant aesthetic odors. On the other hand, this second waste still contains nutrients, especially macro nutrients, so it can be used as a material for making liquid organic fertilizer. In this study, both materials were used as liquid organic fertilizer through the fermentation process with the addition of EM4 liquid and the determination of nitrogen and phosphorus elements by the Kjheldal method and spectrophotometry. Based on the research results obtained Nitrogen levels in tofu waste, sago pulp and liquid organic fertilizer in a row: 2.2558%; 0.4236% and 0.0382%. While the phosphorus content in a row: 0.024%; 0.014%; and 0.012%. The results of the application of liquid organic fertilizer on mustard plants gave a tendency to increase plant height, leaf length, leaf width of mustard plants, but there was no addition of leaf blade for 14 days after planting

scholarly journals Effect of various levels of nitrogen and phosphorus on nutrient content and uptake of Palmarosa (Cymbopogan martinii var. Motia)

2018 ◽  
Author(s):  
Jayalakshmi Mitnala
Keyword(s):  
Nitrogen Content ◽  
Nitrogen Uptake ◽  
Phosphorus Content ◽  
Block Design ◽  
Phosphorus Uptake ◽  
Nutrient Content ◽  
Potassium Uptake ◽  
Potassium Content ◽  
Nitrogen And Phosphorus ◽  
Four Levels

A field experiment was conducted to study the different levels of Nitrogen and Phosphorus on nutrient content and uptake of Palmarosa under rainfed conditions on vertisols at Panjabrao Deshmukh Krishi Vidyapeeth, Akola during 2007-2008. The experiment was laid in factorial randomized block design with three replications. There were four levels of nitrogen viz., 0 k g (N0), 40 kg (N1), 60 kg (N2), 80 kg (N3) and three levels of phosphorus 0 kg (P0), 20 kg (P1), 40 kg (P2) ha-1. The results revealed that the nitrogen content (0.85%), phosphorus content(0.69%) and potassium content (0.56%) in the crop was highest when treated with 80 kg (N3) ha-1 and the nitrogen content (0.74%), phosphorus content (0.60%) and potassium content (0.48%) was also more with the application of 40 kg (P2) ha-1. Similarly the crop uptake was recorded highest with application of 80 kg N ha-1 where the nitrogen uptake was (30.50 kg ha-1), phosphorus uptake (14.36 kg ha-1 ) and potassium uptake (13.25 kg ha-1), while the nitrogen uptake (22.12 kg ha-1), phosphorus uptake (11.90 kg ha-1) and potassium uptake (10.12 kg ha-1) was also more when treated with 40 kg (P2) ha.-1

The development of cuttings of the Washington navel orange to the stage of fruit set. II. Drifts in nutrient composition

1961 ◽  
Vol 12 (6) ◽  
pp. 1066
Author(s):  
CT Gates ◽  
D Bouma ◽  
H Groenewegen
Keyword(s):  
Phosphorus Content ◽  
Fruit Set ◽  
Dry Weight ◽  
Nutrient Content ◽  
Rhythmic Pattern ◽  
Nitrogen And Phosphorus ◽  
Nutrient Distribution ◽  
Plant Parts ◽  
Washington Navel ◽  
Low Phosphorus

Changes in nutrient content with time, especially of nitrogen and phosphorus content, are presented and are considered in relation to the results for dry weight reported previously. It was found that drifts in nitrogen and phosphorus with time were complementary to the pattern for dry weight noted earlier. The distribution of these nutrients to the developing plant followed a like rhythmic pattern of alternate distribution to shoot and root. There appeared to be no build up of nutrient to trigger off developing of new shoots, and at all times nutrient distribution was preferentially to younger developing parts. Low phosphorus supply caused a lowering of both relative and absolute contents of phosphorus and nitrogen in all plant parts. The pattern of development was not greatly altered in character by low phosphorus but was delayed. All vegetative parts responded similarly in control and low phosphorus plants, and the younger parts did not appear to dominate the older in development. In this regard, the pattern of growth seemed to differ from that of many annuals. The proportion of tissue potassium was lowered and that of calcium raised by ammonium as the source of nitrogen. A concomitant effect on phosphorus and nitrogen metabolism was noted.

scholarly journals Leaf Nutrient Relations of Cycads in a Common Garden

2021 ◽  
Vol 14 ◽  
pp. 194008292110365
Author(s):  
Thomas E. Marler ◽  
Anders J. Lindström
Keyword(s):  
Common Garden ◽  
Nutrient Content ◽  
Leaf Traits ◽  
Botanical Garden ◽  
Active Management ◽  
Nitrogen And Phosphorus ◽  
Representative Species ◽  
Nutrient Relations ◽  
Homogeneous Environment ◽  
Dry Combustion

Background and Aims Research required to clarify leaf nutrient relations of cycad species has been inadequate. Common garden studies are useful for determining the influence of genetics on leaf traits because of the homogeneous environment among experimental units. To date, there have been no common garden studies which included all ten genera of cycads. The full phylogenetic breadth has, therefore, not been included in this important area of study. Methods We examined macronutrient and micronutrient content of leaves from one representative species from each of the ten cycad genera at Nong Nooch Tropical Botanical Garden in Thailand. Nitrogen content was determined by dry combustion, and the remaining nutrients were quantified by spectrometry. Results The least variable elements were nitrogen and phosphorus, and the most variable elements were boron and sodium. Nutrient content based on leaflet area was more variable than based on leaflet mass, reflecting species differences in specific leaf area. There were no universal macronutrient or micronutrient signals indicating clear phylogenetic distinctions. Implications for Conservation: Active management of threatened cycad taxa requires research to develop the knowledge to enable evidence-based decisions. This common garden study inclusive of all 10 cycad genera creates a foundation to determine leaf nutrient sufficiency ranges to inform management decisions.

Assessment of bioavailable nitrogen and phosphorus content in the sediments of Indian mangroves

2021 ◽  
Author(s):  
Yudhistir Reddy ◽  
Dipnarayan Ganguly ◽  
Gurmeet Singh ◽  
Mamidala Harikrishna Prasad ◽  
Paneer Selvam Arumughan ◽  
...  
Keyword(s):  
Phosphorus Content ◽  
Nitrogen And Phosphorus ◽  
Indian Mangroves

Phomopsis oryzae-sativae. [Descriptions of Fungi and Bacteria].

1980 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
Geographical Distribution ◽  
Leaf Blade ◽  
Leaf Sheath ◽  
Advanced Stage ◽  
Collar Rot ◽  
Oryza Saliva ◽  
Water Splash

Abstract A description is provided for Phomopsis oryzae-sativae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOST: Oryza saliva. DISEASE: Collar rot of rice, appearing at the end of tillering stage. Visible symptoms are small dark brown lesions at the base of the auricle of the topmost fully expanded leaf. These lesions enlarge to cover the whole auricle and in the advanced stage lesions extend to the adjacent parts of the leaf sheath and leaf blade. Within 14 days the blade joint at the top of leaf sheath turns dark brown and then rots, causing the leaf blade to drop off (Kanjanasoon, 1962). GEOGRAPHICAL DISTRIBUTION: Asia (Thailand). TRANSMISSION: No studies reported. Conidia presumably dispersed by water splash.

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