EFFECT OF HARVESTING TIME AND PLANT AGE ON SOME QUALITY PARAMETERS OF LOVAGE (LEVISTICUM OFFICINALE KOCH.)

2002 ◽  
pp. 311-314 ◽  
Author(s):  
I. Novák ◽  
E. Németh
Keyword(s):  
Quality Parameters ◽  
Plant Age ◽  
Harvesting Time

Yield and Seed quality of barley (Hordeum vulgare L.) as affected by variety, nitrogen level and harvesting time

2014 ◽  
Vol 2 (2) ◽  
pp. 93-100
Author(s):  
Shahnaj Yesmina ◽  
Moushumi Akhtarb ◽  
Belal Hossain
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Seed Quality ◽  
Quality Parameters ◽  
Nitrogen Level ◽  
Yield Attributes ◽  
Harvesting Time ◽  
Nitrogen Levels ◽  
Vigour Index

The experiment was conducted to find out the effect of variety, nitrogen level and harvesting time on yield and seed quality of barley. The treatments used in the experiment consisted of two varieties viz. BARI Barley 4 and BARI Barley 5, three harvesting time viz. 35, 40 and 45 Days after Anthesis (DAA) and nitrogen levels viz. 0, 70, 85 and 100 kg N ha-1 . The experiment was laid out in a spilt- spilt-plot design with three replications assigning the variety to the main plot, harvesting time to the sub-plots and nitrogen level to the sub-sub plots. Variety had significant effects on the all yield attributes except fertile seeds spike-1 . Seed quality parameters viz. normal seeds spike-1 , deformed seeds spike-1 , germination (%) and vigour index were statistically significant. The variety BARI Barley 5 produced higher grain yield and seed quality than BARI Barley 4. Grain yield from BARI Barley 5 and BARI Barley 4 were 4.59 t ha-1 and 4.24 t ha-1 , respectively. Significantly, the highest 1000-seed weight (46.90 g) was produced by BARI Barley 5 than (37.90 g) BARI Barley 4. The result revealed that harvesting time had significant effect on yield and yield attributes and seed quality parameters. Seed yield was highest (4.65 t ha-1 ) when the crop harvested at 40 DAA and it was increased linearly from 35 DAA. Maximum quality seed and 1000-seed weight (43.20 g) was obtained when the crop harvested at 40 DAA. All the yields, yield attributes and seed quality parameters were significantly influenced by nitrogen levels. The highest grain yield (5.14 t ha-1 ) was obtained when BARI Barley 5 variety was fertilized by 100 kg N ha-1 and the lowest (3.14 t ha-1 ) was obtained from control treatments. Normal seeds spike-1 , vigour index, germination (%) were better at 85 kg N ha-1 in variety of BARI Barley 5 than BARI Barley 4. So it can be concluded that BARI Barley 5 showed better result when fertilized with 100 kg N ha-1 and harvested at 40 DAA for getting maximum yield and 85 kg N ha-1 and harvested at 40 DAA for getting better quality seed.

The Effect of Harvesting Time on Olive Fruits and Oils Quality Parameters of Tortiglione and Dritta Olive Cultivars

2021 ◽  
pp. 2000382
Author(s):  
Flamminii Federica ◽  
Marone Elettra ◽  
Neri Lilia ◽  
Pollastri Luciano ◽  
Cichelli Angelo ◽  
...  
Keyword(s):  
Quality Parameters ◽  
Harvesting Time ◽  
Olive Cultivars

scholarly journals Variation in Morphological and Quality Parameters in Garlic (Allium sativum L.) Bulb Influenced by Different Photoperiod, Temperature, Sowing and Harvesting Time

Plants ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 155 ◽  
Author(s):  
Muhammad Jawaad Atif ◽  
Bakht Amin ◽  
Muhammad Imran Ghani ◽  
Muhammad Ali ◽  
Zhihui Cheng
Keyword(s):  
Abiotic Factors ◽  
Soluble Sugar ◽  
Growth Period ◽  
Sowing Date ◽  
Quality Parameters ◽  
Plant Age ◽  
Bulb Formation ◽  
Garlic Bulb ◽  
Soluble Solid ◽  
Higher Temperature

Photoperiod (light) and temperature as abiotic factors having significant impact on the garlic bulb morphology and quality. In various bulb plants including garlic, bulbing is affected by photoperiod, temperature, sowing date and the plant age. In this backdrop experiments were performed to understand the effect of different photoperiods (10 h/14 h, 12 h/12 h and 14 h/10 h (light/dark)), temperatures (25 °C/18 °C and 30 °C/20 °C (light/dark)), sowing dates (D0801: 1st August, D0901: 1st September and D1001: 1st October) and plant ages (A80, A60 and A40: 80, 60 and 40 days after planting) on garlic cultivars viz; G103, G024 and G2011-5. Parameters including morphological (plant height, fresh weight and pseudostem diameter), bulb attributes (diameter, weight, height and bulbing index), growth period and bulb quality related traits (total soluble solid (TSS), contents of soluble protein, soluble sugar, total sugar, glucose, sucrose, fructose, starch, total phenol and total flavonoid) were assayed. Longer photoperiod (14 h), higher temperature (30 °C), early sowing (D0801) and maximum plant age (A80) had maximum morphological and bulb quality related traits for cv. G103. These results showed that early sowing, maximum plant age, longer photoperiod and higher temperature are important for garlic bulb formation and quality. Moreover, the regulation of garlic bulb morphology and quality is achievable over the switch of sowing date, plant age, light and growth temperature.

scholarly journals Effects of Plant Age, Topography and Processing System On the Biochemical Traits and Quality of Tea

2021 ◽  
Vol 50 (3) ◽  
pp. 633-639
Author(s):  
Md Sakib Hossain ◽  
Rayhan Uddin ◽  
Pranti Barua ◽  
- Md Yasin ◽  
Mohammad Shameem Al Mamun ◽  
...  
Keyword(s):  
Sugar Content ◽  
Processing System ◽  
Quality Parameters ◽  
Tea Plant ◽  
Total Sugar ◽  
Plant Age ◽  
Carotenoid Content ◽  
Young Plant ◽  
Total Sugar Content

Laboratory experiment was conducted to study the biochemical and quality parameters of tea i.e. Polyphenol, Theaflavin (TF), Thearubigin (TR), Caffeine, Lipid, Total ash, Chlorophyll, Moisture content etc. under different variables designed for age, topography, and processing system imposed on an established tea orchard. Results revealed that plant age and topography do not have any significant effect on most of the studied parameters. In case of plant age, tannin is found to be significantly higher in mature tea plant (39.35 ppm) whereas young plant showed significantly lower total sugar content (28.98 ppm). In case of land elevation, significantly higher tannin (37.41 ppm) and lower carotenoid content (0.74 mg/g) were evident in plants from kunchi topography where flat topography showed significantly higher total sugar (26.62 ppm) in leaves. The handmade tea flavoured with significantly higher amount of polyphenol (58.57 ppm) and caffein (43.30 ppm) but industry made tea showed significantly higher amount of tannin (37.65 ppm), total sugar (15.25 ppm) and TF:TR (1:10). Bangladesh J. Bot. 50(3): 633-639, 2021 (September)

scholarly journals Determination of Optimum Harvesting Time for Periphyton Production on Artificial Substrates

2013 ◽  
Vol 23 (1-2) ◽  
pp. 51-62
Author(s):  
T Zaman ◽  
MMM Alam
Keyword(s):  
Water Quality ◽  
Mass Production ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Artificial Substrates ◽  
Secchi Disc ◽  
Harvesting Time ◽  
Physico Chemical ◽  
Chemical Water

The experiment was conducted in two cement made cisterns for a four-week period. Important physico-chemical water quality parameters and harvesting time in periphyton production were studied. During the study period, four groups of phytoplankton and two groups of zooplankton were observed. Among phytoplankton, Chlorophyceae was the most dominant having 62% Chlorella followed by Bacillariophyceae having 15% Navicula and 12% Cyclotella, Cyanophyceae having 5% Oscillatoria and 2% Anabaena and Euglenophyceae having 2% Euglena and 1% Phacus. The grand averages of periphyton mass production were 0.569 (± 0.242) mg DM/cm2 in C-1. There was highly significant (p<0.05) variation (F = 14.692) between C-1 and C-2 in respect of periphyton production. Cistern-1 was identified as more productive due to its favourable water quality parameters, i.e., water temperature of 24.6 to 28.3 ºC, Secchi disc reading of 18 to 33 cm, dissolved oxygen of 4.67 to 9.55 mg/L, pH of 9.12 to 10.18, NO3-N of 3.58 to 10.90 mg/L, NH3-N of 0.26 to 0.40 mg/L, PO4-P of 7.5 to 3.4 mg/L, conductivity 0.412 to 0.719 Ms. Third addition of substrate, that means 18- 19th day was identified as the optimum harvesting time of periphyton production.DOI: http://dx.doi.org/10.3329/pa.v23i1-2.16565Progress. Agric. 23(1 & 2): 51 – 62, 2012

Effect of Harvest Time on Quality of Sugar Cane Cultivars

2013 ◽  
Vol 824 ◽  
pp. 293-300 ◽  
Author(s):  
T. Yirsaw ◽  
K. Woldetsadik ◽  
T.S. Workneh
Keyword(s):  
Block Design ◽  
Quality Parameters ◽  
Sugar Yield ◽  
Juice Quality ◽  
Harvest Time ◽  
Harvesting Time ◽  
Sugarcane Varieties ◽  
Randomized Complete Block Design ◽  
Stalk Diameter

Three commercial sugarcane varieties such as NCO-334, B52-298 and N14 were grown at Finchaa Cane Plantation, Ethiopia to determine the optimum harvest age for cane and sugar yields. Treatments consisted of factorial combination of varieties and five levels of harvest age were arranged in Randomized Complete Block Design with three replications. The varieties differed in stalk diameter and weight, and millable stalk number. Improvements in internodes number, stalk diameter and weight were increased with harvest age whereas internodes length and millable stalk number decreased with delay in harvesting. Varieties produced better juice quality in canes harvested at 17 months. NCO-334 attained its peak superior quality at the age of 15 months. This preliminary data on some indicator quality parameters imply that NCO-334 could be harvested at 15 months age in order to maximize sugar yield. However, more experiments are required to confirm the effect of harvesting time and variety on cane and sugar yield. Therefore, more research on detecting other quality parameters focusing on cane and sugar yield is recommended.

scholarly journals ASSESSMENT OF RGB AND HYPERSPECTRAL UAV REMOTE SENSING FOR GRASS QUANTITY AND QUALITY ESTIMATION

2019 ◽  
Vol XLII-2/W13 ◽  
pp. 489-494 ◽  
Author(s):  
R. A. Oliveira ◽  
R. Näsi ◽  
O. Niemeläinen ◽  
L. Nyholm ◽  
K. Alhonoja ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Quality Parameters ◽  
Flying Height ◽  
Harvesting Time ◽  
Spectral Bands ◽  
Primary Growth ◽  
Dry Biomass ◽  
Reference Measurements ◽  
Orientation Parameters ◽  
D Value

<p><strong>Abstract.</strong> The information on the grass quantity and quality is needed for several times in a growing season for making optimal decisions about the harvesting time and the fertiliser rate, especially in northern countries, where grass swards quality declines and yield increases rapidly in the primary growth. We studied the potential of UAV-based photogrammetry and spectral imaging in grass quality and quantity estimation. To study this, a trial site with large variation in the quantity and quality parameters was established by using different nitrogen fertilizer application rates and harvesting dates. UAV-based remote sensing datasets were captured four times during the primary growth season in June 2017 and agricultural reference measurements including dry biomass and quality parameters, such as the digestibility (D-value) were collected simultaneously. The datasets were captured using a flying height of 50&amp;thinsp;m which provided a GSD of 0.7&amp;thinsp;cm for the photogrammetric imagery and 5&amp;thinsp;cm for the hyperspectral imagery. A rigorous photogrammetric workflow was carried out for all data sets aiming to determine the image exterior orientation parameters, camera interior orientation parameters, 3D point clouds and orthomosaics. The quantitative radiometric calibration included sensor corrections, atmospheric correction, and correction for the radiometric non-uniformities caused by illumination variations, BRDF correction and the absolute reflectance transformation. Random forest (RF) and multilinear regression (MLR) estimators were trained using spectral bands, vegetation indices and 3D features, extracted from the remote sensing datasets, and insitu reference measurements. From the FPI hyperspectral data, the 35 spectral bands and 11 spectral indices were used. The 3D features were extracted from the canopy height model (CHM) generated using RGB data. The most accurate results were obtained in the second measurement day (15th June) which was near to the optimal harvesting time and generally RF outperformed MLR slightly. When assessed with the leave-one-out-estimation, the best root mean squared error (RMSE%) were 8.9% for the dry biomass using 3D features. The best D-value estimation using RF algorithm (RMSE%&amp;thinsp;=&amp;thinsp;0.87%) was obtained using spectral features. Using the estimators, we then calculated grass quality and quantity maps covering the entire test site to compare different techniques and to evaluate the variability in the field. The results showed that the low-cost drone remote sensing gave excellent precision both for biomass and quality parameter estimation if accurately calibrated, offering an excellent tool for efficient and accurate management of silage grass production.</p>

Yield Improvement of Gracilaria tentuistipitata by Optimizing Different aspects in Coast of Cox’s Bazar, Bangladesh

2021 ◽  
Author(s):  
S. M. Bokhtair ◽  
M. A. Ali ◽  
M . A. Z. Chowdhury ◽  
K. U. Ahmed ◽  
M. K. Hassan ◽  
...  
Keyword(s):  
Lunar Cycle ◽  
Quality Parameters ◽  
The Moon ◽  
Seaweed Cultivation ◽  
Yield Improvement ◽  
Yield Performance ◽  
Double Line ◽  
Line System ◽  
Harvesting Time ◽  
Selection Of

Abstract This research was designed to find out the effect of different factors such as influence of lunar cycle, harvesting interval, rope type and seeding gap on the production of G. tenuistipitata in coast of Cox’s Bazar. Duration of these experiments were sixty days and all the parameters were recorded fortnightly. Monitoring of water quality parameters indicated that salinity, temperature, transparency, pH and DO were suitable for seaweed cultivation. In determining lunar cycle effect, results envisaged that fresh yield was 14.43% increased when seeding and harvesting time was selected considering the moon cycle. Regarding the selection of harvesting interval, it was found that T3 (30 days interval) was the best to harvest the seaweed whereas T4 (40 days interval) showed decreasing trend in production. Our study also found that semi floating single line showed better yield performance compared to semi floating double line system. In case of influence on seeding gap, it has been found that 20 cm gap between two seed showed the highest yields followed by 10 cm, 30 cm and 40 cm, respectively. Overall, it can be concluded that yield of G. tenuistipitata in coast of Cox’s Bazar could be improved considering those factors.

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