Some effects of no cultivation on the yield and growth of citrus trees

1952 ◽  
Vol 3 (3) ◽  
pp. 259 ◽  
Author(s):  
HJ Frith
Keyword(s):  
Root Distribution ◽  
Soil Structure ◽  
Bare Soil ◽  
The Other ◽  
Leaf Analysis ◽  
Yield And Quality ◽  
Nitrogen Treatments ◽  
High Yields ◽  
Citrus Trees

A factorial field experiment is described in which cultural, irrigation, and nitrogen treatments were tested on citrus trees of different stocks and scions. The sod treatment quickly caused decreases in growth of the trees and the yield and quality of the fruit produced. The plots where bare soil was maintained have given large healthy trees with high yields of good-quality fruit, in spite of an observed deterioration of soil structure in these plots. Nitrogen treatments improved the yield and health of the trees in the sod treatments but have had no effect on the other cultural treatments. Root distribution, soil fertility, and leaf analysis studies, undertaken to try to explain the reasons for the yield differences noted, are described and it is concluded that nitrogen effects could explain all differences recorded to date.

scholarly journals YIELD AND QUALITY OF TRIPLOID WATERMELON HYBRIDS.

HortScience ◽  
1990 ◽  
Vol 25 (8) ◽  
pp. 859f-859
Author(s):  
Donald N. Maynard ◽  
Gary W. Elmstrom
Keyword(s):  
Total Yield ◽  
Fruit Weight ◽  
The Other ◽  
Soluble Solids ◽  
Yield And Quality ◽  
Other Hand ◽  
Seedless Watermelon ◽  
Triploid Watermelon

Evaluations of 30 triploid (seedless) watermelon hybrids were conducted in the Spring 1989 season at Bradenton and Leesburg, Florida. There was considerable variation in relative cultivar yields at the two locations. However, consistency in some cultivars did occur. 'HMX 7924' produced the highest total yield and 'CFREC 88-2' had high total yields at both locations. On the other hand, 'ACX 882322', 'Fengshan No. 1', 'FMX 28', 'Fummy', 'Honeyheart', 'Nova', and 'NVH 4295' produced low total yields at both locations. Average fruit weight was high for 'Ssuper Sweet Brand 5244', 'CFREC 88-4', and 'HMX 7924' whereas 'ACX 882322', 'FMX 28', 'Fengshan No. 1', 'Nova', and 'PSR 49087' produced low average fruit weight. Soluble solids exceeded 11% in all entries at Bradenton whereas two entries were lower than 10% at Leesburg. Several experimental lines out performed the named cultivars suggesting that future introductions will be superior to those already available.

scholarly journals Impact of Grinding Procedure on the Yield and Quality of the Extract from Clove Buds Using Supercritical Fluid Extraction

2018 ◽  
Vol 10 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Julio C.F. Johner ◽  
Tahmasb Hatami ◽  
Pedro I. N. Carvalho ◽  
M. Angela A. Meireles
Keyword(s):  
Gas Chromatography ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Constant Pressure ◽  
The Other ◽  
Fluid Extraction ◽  
Yield And Quality ◽  
Eugenyl Acetate ◽  
Dynamic Extraction

Introduction: The effects of the grinding procedure on the supercritical fluid extraction (SFE) yields of eugenol, β-caryophyllene, α-humulene, and eugenyl acetate from clove are discussed in detail in this paper. Methods: For this purpose, five grinding procedures were employed: 1) continuous 1-min grinding, 2) continuous 2-min grinding, 3) two 1-min grinding periods with 6-min stop in between 4) continuous 4-min grinding, and 5) four 1-min grinding periods with 6-min stops in between. After that, the extractor was filled with 12 g of milled clove obtained using one of the grinding procedures while the other SFE parameters were kept constant (pressure of 150 bar, temperature of 40 °C, supercritical CO2 flow rate of 1.03×10−4 kg/s, static time of 20 min, and dynamic extraction time of 15 min). Then, the composition of the extract was evaluated by gas chromatography (GC). Conclusion: It was found that the grinding procedure has considerable effects on the recoveries of eugenol, β-caryophyllene, α-humulene, and eugenyl acetate from clove, and employing four 1-min grinding periods with 6-min stops in between as the grinding procedure gave the highest content of the aforementioned components in the extract.

scholarly journals EVALUATION OF PROPAGATING STOCK AND PRACTICES FOR ANNUAL RHUBARB PRODUCTION

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1119f-1119
Author(s):  
D.N. Maynard
Keyword(s):  
The Other ◽  
Annual Production ◽  
Average Yield ◽  
Yield And Quality ◽  
Other Hand ◽  
Selection Of

Yield and quality of seed- and vegetatively-propagated rhubarb [Rheum rhabarbarum L.) for annual production were evaluated for 4 seasons. Field planting of transplants or crown divisions in late October or early November resulted in harvests beginning in early to late January and continuing until late April. Selection of `Victoria' seedlings based on petiole color was not effective in increasing the proportion of red mature petioles. Yields from seed-propagated annual `Victoria' rhubarb were always higher than yields from `McDonald' single-bud crown divisions and higher than yields from `McDonald' crown-divisions in one of two years. The four-year average yield for `Victoria' seed-propagated rhubarb was 20.4 Mg·ha-1 whereas `McDonald' crown-division-propagated rhubarb had a two-year average yield of 15.8 Mg·ha-1. On the other hand, petiole color of vegetatively-propagated rhubarb was always superior to that of seed-propagated rhubarb. GA applications increased early yield from `McDonald' single-bud divisions, but reduced early and total harvest petiole weight.

scholarly journals EFFECT OF ROOTSTOCK ON YIELD AND QUALITY OF `CABERNET FRANC' (VITIS VINIFERA) IN OKLAHOMA

HortScience ◽  
2006 ◽  
Vol 41 (3) ◽  
pp. 512B-512
Author(s):  
Eric T. Stafne ◽  
B. Dean McCraw ◽  
William G. McGlynn ◽  
R. Keith Striegler
Keyword(s):  
Vitis Vinifera ◽  
Pest Resistance ◽  
Soil Characteristics ◽  
Quality Attributes ◽  
The Other ◽  
Cabernet Franc ◽  
Yield And Quality ◽  
Climate Patterns

Rootstocks can offer benefits such as pest resistance, tolerance of certain soil characteristics and tolerance of salts and salinity. The objective of this study was to determine if `Cabernet Franc' grafted onto various rootstocks differed in a number of measured yield and quality variables. The plots consisted of Clone 1 `Cabernet Franc' with four different rootstocks: 1103 Paulsen, 140 Ruggeri, 3309 Couderc, and St. George. Rootstock did not have much effect on the yield or quality of fruit produced by `Cabernet Franc'. Although not significantly different, the overall yield of 3309C appears to be lower than the other rootstocks. With further data, it might be possible to identify annual climate patterns that favor one rootstock over another with respect to certain quality attributes. One particular problem with `Cabernet Franc' in Oklahoma is its tendency to overbear, thus resulting in uneven ripening.

scholarly journals Effect of Shading on Development, Yield and Quality of Bastard Balm Herb (Melittis melissophyllum L.)

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2142
Author(s):  
Izabela Szymborska-Sandhu ◽  
Jarosław L. Przybył ◽  
Ewelina Pióro-Jabrucka ◽  
Agata Jędrzejuk ◽  
Zenon Węglarz ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
The Other ◽  
Coumaric Acid ◽  
Cichoric Acid ◽  
Seed Setting ◽  
Full Sunlight ◽  
Similar Tendency ◽  
Yield And Quality ◽  
Chlorophyll A And B

The aim of the study was to assess the effects of Melittis melissophyllum shading on its development and accumulation of phenolics. Their content (verbascoside, apiin, luteolin-7-O-glucoside, coumarin, 3,4-dihydroxycoumarin, o-coumaric acid 2-O-glucoside as well as o-coumaric, p-coumaric, chlorogenic, caffeic, ferulic and cichoric acid) was determined in the herb using HPLC-DAD. The results showed that the content of abovementioned flavonoids and phenolic acids was highest in plants grown under full sunlight. On the other hand, a higher content of coumarin was observed in shaded plants, especially after the seed-setting stage. A similar tendency was noted for the amount of chlorophyll a and b. The content of hydrogen peroxide and malondialdehyde, the activity of polyphenol oxidase and catalase and the antioxidant capacity of plant extracts (measured using DPPH, ABTS and FRAP assays) were found to be the highest in the plants grown in full sunlight. However, the plants grown in moderate (30%) shade were found to thrive best.

Heterosis and combining ability effects on cotton. II. Heterosis

1988 ◽  
Vol 39 (6) ◽  
pp. 991 ◽  
Author(s):  
NJ Thomson ◽  
DJ Luckett
Keyword(s):  
New South ◽  
Commercial Production ◽  
River Valley ◽  
The Other ◽  
Diverse Range ◽  
Yield And Quality ◽  
South Wales ◽  
Commercial Cultivars ◽  
The Mean

The yield and quality of a diverse range of cotton hybrids was measured in one, or more, of a number of experiments conducted in the Ord River valley, Western Australia (15�S.) and the Namoi River valley, New South Wales (30�S.). Two of the experiments were diallels, one involving nine parents, the other thirteen parents. In both the plant and subsequent ratoon crops, mean yield of the hybrids was significantly greater than the mean yield of the parents, and the hybrids had significantly longer and stronger fibre. A few hybrids in both diallels significantly outyielded commercial controls by between 15 and 35% in both the plant and ratoon crops. Subsequently, in other experiments including one with near-commercial large plots, the high performers from the diallel experiments were inconsistent for yield, usually exhibiting little or no heterosis above that of the best commercial cultivars. Other hybrids tested in these experiments also generally failed to outyield the commercial controls, although a number had higher-quality fibre. It was concluded the heterosis for yield is not consistent enough under high-yielding Australian conditions to warrant the commercial production of hybrid cotton seed. Some hybrids, however, especially the interspecific G. hirsutum x G. barbadense ones, have the stronger, finer fibre that appears better suited to cotton spinning equipment now being developed, and this aspect could justify reappraisal of this conclusion in the future.

Laxogenosides Enhance Yield and Quality of Raphanus sativus L. Under Greenhouse Condition

2021 ◽  
Vol 15 (4) ◽  
pp. 542-547
Author(s):  
Jinna Liu ◽  
Zihe Zha ◽  
Xiaoli Liu ◽  
Cunli Zhang
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Raphanus Sativus ◽  
Water Soluble ◽  
The Other ◽  
Application Time ◽  
Greenhouse Experiments ◽  
Yield And Quality

Laxogenoside-C (LG-C) has BRs-likely activity and with higher activity stability. In this study, the LG-C and SsS (the mixture of Laxogenoside-A, -B, and -C; isolated from the Smilax scobinicaulis C.H. Wright) were used to conduct the seeding treatment and greenhouse experiments with different application time and concentrations, to clarify the effect on yield and quality of radish (Raphanus sativus L.) for development of a new plant growth regulator. The results showed that 10 μM LG-C and SsS increased hypocotyls, elongation and cotyledon weight compared with other treatment. The greenhouse experiments indicated that the interaction effect of plant growth regulator types and application time was significant for all parameters except for phosphorus content. An application of LG-C or SsS produced a higher yield than multiple times. Compared with T0 treatment, LG-C and SsS sprayed at root enlargement (T4) increased yield by 25.33% and 24.10%, respectively. T4 treatment of LG-C produced the highest yield and free amino acid and phosphorus, but the other parameters not. T4 treatment of SsS not only had the highest yield and water-soluble carbohydrates and water-soluble protein but also improved the other radish quality. In conclusion, this study indicated that the application of SsS at root enlargement with 10 μM improved radish root tubers yield and quality.

Internet of Things-Based Smart Drip Irrigation Using Arduino

2020 ◽  
Vol 17 (9) ◽  
pp. 4598-4603
Author(s):  
Akanksha Kumari ◽  
Prabhat Kumar Sahu
Keyword(s):  
Internet Of Things ◽  
Drip Irrigation ◽  
Soil Structure ◽  
Agricultural Sector ◽  
Irrigation System ◽  
National Income ◽  
Yield And Quality ◽  
Soil Preparation ◽  
The Internet Of Things

Agriculture is one of the primary sectors in the Indian economy. Over the past several years, agricultural scientific techniques and agricultural implements have developed in the region, replacing the traditional method of farming. By which the economic condition of the farmers has improved. In addition, there are still some small farmers in India who use the old traditional methods of farming of agriculture because they do not have the resources to use modern methods. Besides, it is the only region that has contributed not only to the development of itself but also to other areas of the country. Agriculture has a major contribution to the country’s GDP and national income. In addition, it requires a huge manpower and labour which constitutes about 80% of the total workforce. Employees work not only directly but indirectly in the agricultural sector. Irrigation is the use of controlled amounts of water at the required intervals to the plants. Effective irrigation will affect seed development, germination, root growth, utilization of nutrients, plant growth and revival, yield and quality of the entire development process. The farmer knows how much water he has to give to the crop and when crop is to be planted, but the best system of irrigation it is necessary to have the information about use of equipment, plant species, soil structure, soil preparation and It is also important to be aware of all these that at what stage to watering the plant. The aim of this research paper is to describe how the Internet of Things (IoT) framework plays an important role in the field of agriculture. Here to show the importance of IoT in agriculture, we choose “Smart Drip Irrigation System.”

EFFECT OF FREQUENCY OF IRRIGATION ON SOIL MOISTURE AND TURF QUALITY

1967 ◽  
Vol 47 (1) ◽  
pp. 89-97 ◽  
Author(s):  
R. H. Turley
Keyword(s):  
Soil Moisture ◽  
Irrigation Treatment ◽  
The Other ◽  
Moisture Budget ◽  
Visual Rating ◽  
Turf Quality ◽  
Yield And Quality ◽  
Soil Moisture Budget ◽  
Irrigation Requirements

The effect of frequency of irrigation on soil moisture, yield and quality of turf was studied at Saanichton, British Columbia during the summers of 1962 and 1963. Plots were watered when a soil moisture budget, based on black Bellani plate atmometers, showed a deficit of 1.3, 1.9, 2.5 and 3.2 cm. All treatments received the same amount of water over the season. The 1.3-cm irrigation treatment ranked first in visual rating, produced the heaviest yields per clip and maintained higher and more uniform soil moisture than the other treatments.The black Bellani plate atmometer proved to be an efficient instrument in predicting irrigation requirements of lawn turfs.

scholarly journals Nitrogen fertilization effect on grain yield and quality of spring triticale varieties

2019 ◽  
Author(s):  
H. K. Abdelaal ◽  
P. D. Bugaev ◽  
T. N. Fomina
Keyword(s):  
Grain Yield ◽  
Nitrogen Fertilization ◽  
Flowering Stage ◽  
Yield And Quality ◽  
Percentage Points ◽  
Spring Triticale ◽  
Fertilization Effect ◽  
Grain Yield And Quality ◽  
Nitrogen Treatments

The effect of fertilizing three triticale varieties (Timiryazevskya, Karmen, and Ukro) with nitrogen at different rates either one time at pre-sowing (N30, N 60, N90, N 120 and N150) or two times at pre-sowing and flowering stage (N90+ N30) and (N90+ N60) has been studied. The data indicated that all nitrogen treatments applied either at pre-sowing or/ and flowering stage resulted in a significant increase in triticale yield of three varieties (t/ha) compared to control. The highest yield in Timiryazevskya (5.52 t/ha) was obtained after N120+N0 treatment, while in case of Karmen the highest yield (5.19 t/ ha) was obtained with N150+N0 fertilizing, as to Ukro the highest value (5.05 t/ ha) was noticed after N90+N30 treatment. Besides, the values of 1000 grains weight (gm) insignificantly increased in all cases. Protein and gluten percentage points grew simultaneously with increasing nitrogen amount.

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