Effects of Moisture and Nitrogen on Growth, Yield and Mineral Content of Rice

1969 ◽  
Vol 5 (2) ◽  
pp. 125-132 ◽  
Author(s):  
H. K. Pande ◽  
Panjab Singh

SummaryLimited moisture supply caused reduction in leaf area, number of effective tillers, ratio of sound to unsound grains and the nitrogen, phosphorus, iron and manganese content of rice. Crop yield was adversely affected in the absence of standing water. Two levels of nitrogen (40 and 60 kg.N/ha.) caused no significant difference in yield in 1965, but in 1966, when 30 and 60 kg. N/ha. were used, the latter gave better yields.

2014 ◽  
Author(s):  
Lei Wang ◽  
Chang-Yan Tian ◽  
Zhen-Ying Huang

Producing two or more types of seeds by a single plant is known as seed heteromorphism. Comparison of seed traits or growth between plants grown from heteromorphic seeds has received considerable attention. However, information is scarce regarding the comparison of mineral content of adult plants from heteromorphic seeds. Here we present biomass and mineral profiles (Nitrogen, Phosphorus, Potassium, Sodium and Chloride) of adult plants grown from dimorphic seeds (non-dormant brown seeds and black seeds with non-deep physiological dormancy) of annual desert halophyte Suaeda aralocaspica at different levels of nutrient and salinity. The results showed that, although nutrient and salinity could affect dry weigh and mineral content, seed-dimorphic plants of S. aralocaspica did not show significant difference under the same experimental conditions. This study is one of the few to compare the physiological responses between seed-heteromorphic plants and suggests that mineral status is exactly consistent with growth performance for these plants.


2021 ◽  
Vol 20 (6) ◽  
pp. 83-92
Author(s):  
Ireneusz Stefan Sosna

The study involving 2 pear cultivars was conducted in 2006–2016. ‘Radana’ and ‘Clapp’s Favourite’ were planted in the spring 2006 in the Experimental Station next to Wrocław (south-western Poland) on Quince S1 and Caucasian pear seedlings with 2 interstocks – ‘Doyenne du Comice’ and ‘Pyrodwarf’. An annual dose of 3 tonnes per hectare of Condit Basic bio-fertilizer was applied onto the tree row soil surface at the beginning of March 2012, i.e., starting from the 7th year after the planting. The study objective was to evaluate effect of Condit preparation on summer pear tree cultivars which are not compatible with Quince, and to assess interstock suitability in their context. The yields obtained in the first eleven years following tree planting were the most abundant for ‘Radana’ on Caucasian pear and on Quince with ‘Doyenne du Comice’ interstock. When applied for 5 years, Condit increased the leaf surface area, however a significant difference was exhibited only by ‘Radana’ on the Caucasian pear. This soil improver did not affect tree growth and yielding; total chlorophyll content; foliar Mg, P, Ca, and K; and mean fruit mass across the investigated treatment combinations.


2014 ◽  
Author(s):  
Lei Wang ◽  
Chang-Yan Tian ◽  
Zhen-Ying Huang

Producing two or more types of seeds by a single plant is known as seed heteromorphism. Comparison of seed traits or growth between plants grown from heteromorphic seeds has received considerable attention. However, information is scarce regarding the comparison of mineral content of adult plants from heteromorphic seeds. Here we present biomass and mineral profiles (Nitrogen, Phosphorus, Potassium, Sodium and Chloride) of adult plants grown from dimorphic seeds (non-dormant brown seeds and black seeds with non-deep physiological dormancy) of annual desert halophyte Suaeda aralocaspica at different levels of nutrient and salinity. The results showed that, although nutrient and salinity could affect dry weigh and mineral content, seed-dimorphic plants of S. aralocaspica did not show significant difference under the same experimental conditions. This study is one of the few to compare the physiological responses between seed-heteromorphic plants and suggests that mineral status is exactly consistent with growth performance for these plants.


2017 ◽  
Vol 59 (2) ◽  
pp. 097-102
Author(s):  
Anastasiya A. Kotlova ◽  
◽  
Ilya A. Belous ◽  
Anastasiya V. Kiyashko ◽  
Roman S. Edigarev ◽  
...  

2021 ◽  
Vol 9 (6) ◽  
pp. 63
Author(s):  
Payam Farzad ◽  
Ted Lundgren ◽  
Adel Al-Asfour ◽  
Lars Andersson ◽  
Christer Dahlin

This study was undertaken to investigate the integration of titanium micro-implants installed in conjunction with previously dentin-grafted areas and to study the morphological appearance, mineral content, and healing pattern of xenogenic EDTA-conditioned dentin blocks and granules grafted to cavities in the tibial bone of rabbits. Demineralized and non-demineralized dentin blocks and granules from human premolars were implanted into cavities prepared on the lateral aspects of the tibias of rabbits. After a healing period of six months, micro-implants were installed at each surgical site. Histological examinations were carried out after 24 weeks. Characterization of the EDTA-conditioned dentin blocks was performed by means of light microscopy, dental X-rays, scanning electron microscopy, and energy dispersive X-ray analysis (EDX). No implants were found to be integrated in direct contact with the dentin particles or blocks. On the EDTA-conditioned dentin surface, the organic marker elements C and N dominated, as revealed by EDX. The hydroxyapatite constituents Ca and P were almost absent on the dentin surface. No statistically significant difference was observed between the EDTA-conditioned and non-demineralized dentin, as revealed by BIC and BA. The bone-inductive capacity of the dentin material seemed limited, although demineralization by means of EDTA indicated higher BIC and BA values in conjunction with the installed implants in the area. A 12 h EDTA treatment did not fully decalcify the grafts, as revealed by X-ray analysis.


1928 ◽  
Vol 79 (2) ◽  
pp. 679-687
Author(s):  
J.T. Skinner ◽  
W.H. Peterson

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2257
Author(s):  
Rajan Bhatt ◽  
Jagdish Singh ◽  
Alison M. Laing ◽  
Ram Swaroop Meena ◽  
Walaa F. Alsanie ◽  
...  

Groundwater and soil potassium deficiencies are present in northern India. Sugarcane is a vital crop in the Indian Punjab; it is grown on approximately 91,000 hectares with an average yield of 80 tonnes ha−1 and a sugar recovery rate of 9.59%. The role of potassium (K) fertilizer under both sufficient and deficient irrigation in ratoon sugarcane crops is not well documented. We conducted a split-plot ratoon cane experiment during 2020–2021 at the Gurdaspur Regional Research Station of Punjab Agricultural University, India, on K-deficient soils. Main treatments were fully irrigated (I1) and water stressed (I0) conditions, with sub-treatments reflecting K fertilizer application rates of 0 (M1), 67 (M2), 133 (M3), and 200 (M4) kg K ha−1. The ratoon sugarcane performance was assessed in terms of growth, productivity, sugar quality and incidence of key insect pests. At harvest, trends in the growth and yield parameters in I1 were improved over the I0 treatment, with cane height (+12.2%), diameter (+3.3%), number of internodes (+5.4%), biomass yield (+7.6%) and cane yield (+5.9%) all higher, although little significant difference was observed between treatments. Ratoon cane yield under irrigation was 57.1 tonnes ha−1; in water-stressed conditions, it was 54.7 tonnes ha−1. In terms of sugarcane quality parameters, measured 12 months after harvesting the initial seed crop, values of Brix (+3.6%), pol (+3.9%), commercial cane sugar percentage (+4.0%) and extractable sugar percentage (+2.8%) were all higher in the irrigated treatments than the water-stressed plot. Irrigated treatments also had a significantly lower incidence of two key insect pests: top borer (Scirpophaga excerptalis) was reduced by 18.5% and stalk borer (Chilo auricilius) by 21.7%. The M3 and M4 treatments resulted in the highest cane yield and lowest incidence of insect pests compared to other K-fertilizer treatments. Economic return on K-fertilizer application increased with increasing fertilizer dosage. Under the potassium-deficient water-stressed conditions of the region of north India, a fertilizer application rate of 133 kg K ha−1 is recommended to improve ratoon sugarcane growth, yield, and quality parameters and economic returns for sugarcane farmers.


2016 ◽  
Vol 81 (10) ◽  
pp. 1141-1149 ◽  
Author(s):  
Dejan Jancic ◽  
Vanja Todorovic ◽  
Zorica Basic ◽  
Sladjana Sobajic

The leaves of chicory (Cichorium intybus L.) plant have been used for centuries in Montenegro and other Mediterranean countries as a vegetable in salads, sauces and other types of appetizers and meals. The wild and cultivated chicory leaves from different location in Montenegro were analysed regarding several nutrients, major and trace element and vitamin composition using standard methods of analysis. The results of the study indicated that chicory leaves were rich in total dietary fiber and mineral content and had low energy value. Also, they were potential sources of useful nutrients such as potassium, calcium, manganese, iron, and vitamin A, with the average content of 391.9, 164.7, 0.55, 2.33 and 0.47 mg / 100 g in fresh leaves, respectively. Wild plants were superior to the cultivated ones regarding carbohydrate, calcium and manganese content. Origin of the chicory leaves significantly influenced most of the analyzed parameters.


2014 ◽  
Author(s):  
Gabriela Garcia ◽  
Sarah Gabriele ◽  
Benjamin Cowgill ◽  
Xavier Rodriguez ◽  
Robert J Gay

Background: The purpose of this study was to determine what floral differences exist in North Mountain Park and Casa Grande Mountain Park which are both located on opposite sides of the Casa Grande Valley, Pinal County, Arizona and to attempt to explain any measured differences. Previous authors have proposed several explanations for floral variation within the Sonoran Desert including elevation, soil pH, and mineral content. This study explicitly tests several of these proposed mechanisms for determining community composition. Methods: The floral composition was measured in both North Mountain Park and Casa Grande Mountain Park through a series of transects which were sampled by multiple times in 2012 and 2013. Elevation data soil pH were also sampled. Results: The data recovered from North Mountain Park differed from the expected values in Casa Grande Mountain Park by 22%. This indicates a significant difference in the flora between these two localities that was not predicted by earlier studies. Elevation and soil pH differences between sampled localities were not significant. This suggests that mineral composition of the soil may play an important role within this basin in determining community composition. Discussion: Many factors that have been proposed in prior studies do not appear to play a significant role within the Casa Grande Valley in determining community composition. This indicates that the composition of a community is influenced by different factors in different locations within the Sonoran Desert. This makes determining overall controlling factors across an ecosystem difficult.


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