scholarly journals Effect of sowing density and nitrogen top-dress fertilisation on growth and yield of chia (Salvia hispanica L.) in a Mediterranean environment: first results

2015 ◽  
Vol 10 (3) ◽  
pp. 163 ◽  
Author(s):  
Rocco Bochicchio ◽  
Roberta Rossi ◽  
Rosanna Labella ◽  
Giovanni Bitella ◽  
Michele Perniola ◽  
...  
Keyword(s):  
Southern Italy ◽  
Plant Density ◽  
Fruit Production ◽  
Growth And Yield ◽  
Leaf Production ◽  
Salvia Hispanica ◽  
Area Index ◽  
First Results ◽  
Salvia Hispanica L ◽  
Set Up

The demand for sources of nutraceuticals has led to the rediscovery and diffusion of traditional crops such as chia (<em>Salvia hispanica</em> L.), whose leaves and fruits are rich in W3 fatty acids and anti-oxidants. Chia originates in Central America but it is rapidly expanding to new areas. A field experiment conducted at Atella in Basilicata (Southern Italy) was set up to test the response of chia to N top-dress fertilisation (0 and 20 kg ha<sup>–1</sup>) and to sowing density (D1=125, D2=25, D3=8 and D4=4 plants m<sup>–2</sup>) in a split-plot design with three replications. First results show maximum leaf area index values up to 7.1 and fresh vegetative biomass production at early flowering ranging between 50.87 (D4) and 59.71 (D1) t ha<sup>–1</sup>. Yield increased with plant density: a significantly (P&lt;0.01) higher production (398 kg ha<sup>–1</sup>) was reached in D1. N top-dressing had a detrimental effect on yield and corresponded to higher lodging and lower maturation percentage of seeds, though non-significant. Based on our first results it seems worthwhile to continue agronomical trials for chia in herbaceous systems of southern Italy for leaf production based on traditional genotypes, while fruit production might be pursued by adopting high sowing density and the search for longer-day genotypes.

scholarly journals Growth and Yield Response of Groundnut (Arachis hypogaea L.) Varieties to Plant Density

2020 ◽  
Vol 8 (3) ◽  
pp. 633
Author(s):  
Gilbert Nwogboduhu Nwokwu ◽  
Ifeoma Lilian Agbedo Odoh ◽  
Egwu Patricia Ngozi
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Plant Density ◽  
Total Yield ◽  
Growth And Yield ◽  
Area Index ◽  
Relative Growth ◽  
Yield Parameters ◽  
Number Of Seeds ◽  
Number Of Branches

A field experiment was conducted at the research field of Faculty of Agriculture and Natural Resources Management, Ebonyi State University Abakaliki during the 2018 farming season to determine the effect of plant density on growth, yield and yield components of groundnut varieties. The experiment was conducted in a 3x4 factorial laid out in a randomized complete block design (RCBD). The treatments comprised three groundnut varieties (SAMNUT 24, 25 and 26) and four planting densities (40,000, 80,000, 120,000, and 160,000 plants ha-1). Each treatment was replicated four times. The parameters measured were plant height, number of leaves per plant, number of branches per plant, days to 50% flowering, shoot dry weight, leaf area index, crop growth rate, relative growth rate, net assimilation rate, number of pod per plant, pod weight per plant, hundred seed weight, number of seeds per plant, shelling percentage and total yield per hectare. The results showed that groundnut varieties were significant in all growth and yield parameters assessed except number of days to 50% flowering, Relative Growth Rate, number of pod per plant, and hundred seed weight while planting density recorded significant effect on all the growth and yield parameters. There were also significant interaction effects of varieties and plant density on plant height, number of branches per plant, leaf area index, relative growth rate, pod weight per plant, number of seeds per plant, and total yield per hectare. This result indicated that SAMNUT 26 and plant density of 160,000 plants ha-1 recorded the highest yield of groundnut and can be recommended for the farmers in the study area.

scholarly journals Effect of planting time on the growth and yield of chia (Salvia hispanica L.)

2016 ◽  
Vol 1 (3) ◽  
pp. 502-507 ◽  
Author(s):  
Md Masudul Karim ◽  
Md Ashrafuzzaman ◽  
Md Alamgir Hossain
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Omega 3 ◽  
Contributing Factors ◽  
Salvia Hispanica ◽  
Planting Time ◽  
Salvia Hispanica L ◽  
Physiological Characters

Chia (Salvia hispanica L.) contains the highest level of omega- 3 fatty acid available in any cultivated plant source. The objective of this research was to find out the suitable planting time for chia in Bangladesh and to study the effect of planting time on its growth and yield. An experiment was carried out at the field laboratory of the Department of Crop Botany, Bangladesh Agricultural University (BAU), Mymensingh, during the period from November 2013 to July 2014 to study the growth, morpho-physiological yield contributing characters and yield of chia. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The collected data were analyzed statistically and the means were adjudged by DMRT using the statistical computer package program, MSTAT_C. The tallest plant (136 cm), highest number of inflorescence plant–1 (13.67), highest amount of total dry matter (305 g) and highest root length (7.767 cm) were recorded from November planting at harvest. However, leaf area plant–1 (207.2 cm2) and LAI (1.891) had also significantly higher from November planting at 90 days after sowing (DAS) compared to other planting times. November planting further recorded the higher CGR (33.43 g m-2 day-1) at the stage between 76–90 DAS and thereafter they decreased. Higher seed yield (1033 Kg ha–1), husk yield (888 Kg ha–1), seed yield plant-1 (4.773 g), husk yield plant-1 (2.840 g) were also recorded from November planting. In December planting the seed yield, husk yield, seed yield plant-1, husk yield plant-1 were 681 Kg ha–1, 340 Kg ha–1, 2.350g and 0.9467g, respectively. Lower seed yield (159 Kg ha–1), husk yield (166 Kg ha–1), seed yield plant-1 (0.6150 g) and husk yield plant-1 (0.5383 g) were recorded from January planting. Except total dry matter, other morpho-physiological characters, yield and yield contributing factors were less effective in January than other planting time. February and March planting did not produce any fertile spike resulting yield less vegetative growth. These results revealed that, November planting was found outstanding superiority for plant growth, yield and morpho-physiological characters of chia in Bangladesh.Asian J. Med. Biol. Res. December 2015, 1(3): 502-507

scholarly journals EFFECT OF SPRAYING WITH DIFFERENT CONCENTRATION OF LICORICE EXTRACT AND PLANT DENSITIES IN GROWTH AND YIELD OF SORGHUM BICOLOR L.

2019 ◽  
Vol 50 (6) ◽  
Author(s):  
Al-Mohmadi & Al-Ani
Keyword(s):  
Grain Yield ◽  
Plant Density ◽  
Foliar Application ◽  
Growth And Yield ◽  
Control Treatment ◽  
Spring Season ◽  
Area Index ◽  
Fall Season ◽  
High Plant Density ◽  
Plant Densities

A field experiment was condueted at the experimental Farm, College of Agriculture University of AL-Anbar in replace location (Abu-Gheaib) in spring season of 2017. While in Fall season it was applied at AL-saqluwiya-Anbar Province 10 km west north of Falluga city to study the effect of four levels of licorice extractor (Glycyrrhiza glabra L.) (0,2,4 and 6) g.L-1 water and three (53,333, 66,666 and 88,888 plant) plant.ha-1. On growth and grain yield of Sorghum cv. Rabih. The experiment was applied using R.C.B.D. arranged in split plots with three replications. levels of plant densities were used as main-plot, while licorice extractor were used as sub-plot. Foliar application of licorice extractor was applied during vegetative growth. The results showed that, high plant density (88888) plant.h-1 significantly increase plant height and leaf area index, while most of traits were not significantly influenced by plant density including grain yield. Results revealed that foliar application of licorice extractor with 2,4,6 g.L-1 of water significantly influenced grain yield in spring season compane with control treatment and it is amounted to (9.62, 9.55 and 9.78) t.h-1 respectively. There were significant interaction between Licorice extractor and plant density in spring and fall season in grain yield. The higher grain yield of 10.31 and 10.33 t.h-1 were obtained when sorghum plants were sowing at hight density and sprayed with Licorice extractor at level          4 g.L-1 respectively

scholarly journals Performance of cotton genotype TCH 1819 to high density planting system under winter irrigated condition at the Western agroclimatic zone of Tamil Nadu

2021 ◽  
Vol 13 (SI) ◽  
pp. 130-134
Author(s):  
R. Sowmiya ◽  
N. Sakthivel
Keyword(s):  
Tamil Nadu ◽  
Plant Density ◽  
Unit Area ◽  
Maximum Yield ◽  
Winter Season ◽  
Plant Population ◽  
Growth And Yield ◽  
Row Spacing ◽  
Area Index ◽  
Cotton Genotype

Plant population is an important attribute in crop management practice. Increasing the plant density by decreasing the crop row spacing was an alternative strategy to optimize crop profit. Hence, the field trial was conducted at Tamil Nadu Agricultural University, Coimbatore, during the winter season of 2017 – 18 to study the effect of row spacing on the growth and yield of cotton genotype TCH 1819. The experimental design was Randomized Block Design (RBD) with seven spacing treatments viz., T1: 60 x 15 cm (1,11,111 plants ha-1), T2: 60 x 20 cm (83,333 plants ha-1), T3: 75 x 15 cm (88,888 plants ha-1), T4: 75 x 20 cm (66,666 plants ha-1), T5: 75 x 30 cm (44,444 plants ha-1), T6: 90 x 15 cm (74074 plants ha-1), T7: 90 x 20cm (55,555 plants ha-1) and was replicated thrice.  Plant densities showed a significant (p=0.05) difference for all the characters studied.  The higher plant density of 1,11,111 plants (60 x 15 cm) observed significantly (p=0.05) maximum plant height (103.14 cm), Leaf Area Index (LAI) (4.35), Dry Matter Production (DMP) (8125 kg/ha), Crop Growth Rate (CGR) (6.58 g/m2/day), root length (41.46 cm), root dry weight (14.94 g/plant), and chlorophyll index (48.24).  The number of sympodial branches per plant (17) and bolls per plant (22 bolls) was found significant in the wider spacing of 75 x 30 cm.  The narrow spacing of 60 x 15 cm noted the highest seed cotton yield (2565 kg/ha), net return (R65706.62), and B: C (2.32) ratio, followed by the spacing of 75 x 15 cm due to more plant density per unit area (m2).  So, maximum yield in cotton can be achieved by decreasing the row spacing and increasing the plant population per unit area.

scholarly journals Comparison of Growth Indices of Nigella sativa L. under Different Plant Densities and Fertilization

2019 ◽  
pp. 231
Author(s):  
Ioannis Roussis, Ioanna Kakabouki, Dimitrios Bilalis
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Plant Density ◽  
Nigella Sativa ◽  
Crop Growth ◽  
Growth And Yield ◽  
Growth Indices ◽  
Area Index ◽  
High Plant Density ◽  
Plant Densities

Agronomic practices such as plant density and fertilizer management are referred to comprise crop environment, which influences plant growth, productivity, and ultimately the yield. The objective of the current study was to evaluate the influence of plant density and fertilization on the growth and growth indices of Nigella sativa crop and to determine the association between yield and growth characteristics at both the single plant and crop stand level. The 2-year experiment was laid out in a split-plot design, with three replications, two main plots (200 and 300 plants m-2) and four sub-plots (fertilization treatments: control, compost, farmyard manure and inorganic fertilizer). The highest absolute growth rate (AGR) (0.0321 g day-1) and relative growth rate (RGR) (0.0714 g g-1 day-1) values were recorded when plants subjected to low-density and inorganic fertilization, while the highest crop growth rate (CGR) (8.0342 g m-2 day-1) was obtained under high-plant density and inorganic fertilization. Concerning specific leaf area (SLA), the highest value (196.28 cm2 g-1) was found in inorganic fertilized treatment. Leaf area index (LAI), Leaf area duration (LAD) and Biomass duration (BMD) were positively affected by both plant density and fertilization with the greatest values observed under high-density and fertilization. In conclusion, plant densities higher than 200 plants m-2 lead to higher crop growth, but lower growth of individual plants and decreased seed yield, while the application of inorganic fertilizers increases crop growth and yield as these fertilizers contain higher levels of nitrogen with high solubility and therefore quick availability for the crop than the organic fertilizers.

scholarly journals EFISIENSI PENGGUNAAN RADIASI SURYA DAN SEBAGAI DASAR DALAM MODEL JARAK PAGAR(RADIATION USE EFFICIENCY AS BASIS THE CROPS MODELING OF JATROPHA)

Agromet ◽  
2008 ◽  
Vol 22 (2) ◽  
pp. 108
Author(s):  
Gusti Rusmayadi ◽  
. Handoko ◽  
Yonny Koesmaryono ◽  
Didiek Hadjar Goenadi
Keyword(s):  
Nitrogen Fertilizer ◽  
Plant Density ◽  
Crop Growth ◽  
Radiation Use Efficiency ◽  
Growth And Yield ◽  
Area Index ◽  
Rainfall Condition ◽  
Use Efficiency ◽  
Four Levels ◽  
Radiation Use

Plant growth interpretation in term of accumulated intercepted solar radiation and the radiation use efficiency (RUE) was used to study the growth and analysis of Jatropha (Jatropha curcas L.). A number of crop growth simulation models have been developed using the RUE concept to predict crop growth and yield in various environments. These models generally calculate daily biomass production as the product of the quantity of radiation intercepted and RUE. This research was carried out to quantify the RUE, biomass and leaf area index on Jatropha under rainfall condition, four levels of nitrogen fertilizer (N) and three population densities (P) planted twice. The experiments used a systematic Nelder fan design with 9 spokes and 4 – 5 rings were conducted at SEAMEO-BIOTROP field experiment in 2007. Data from the first experiment were used for parameterization and calibration and the second experiment data for model validation. Values of RUE were determined by nitrogen fertilizer and plant density. Based on parameterization, we found that RUE for prediction above ground biomass accumulation of Jatropha were 0.94 (r=0.83) g MJ-1 to 1.3 (r=0.75) g MJ-1. Validation between model prediction and field experimental data showed that model can simulate crop growth and development of Jatropha.

The influence of plant density on flower, fruit, and leaf demography in bush bean, Phaseolus vulgaris

1992 ◽  
Vol 70 (5) ◽  
pp. 958-964 ◽  
Author(s):  
Jon Lovett Doust
Keyword(s):  
Phaseolus Vulgaris ◽  
Plant Density ◽  
Fruit Production ◽  
Planting Density ◽  
Leaf Production ◽  
Leaf Demography ◽  
Resource Limited ◽  
Key Words Density ◽  
Current Resource ◽  
Reproductive Biomass

The influence of plant population density on bush beans is analyzed in terms of its effect on flower, fruit, and leaf demography, biomass, and yield. Plants grown at the lowest density (solitary plants) did best in terms of leaf production, total leaf days, flowers, and production of marketable pods (i.e., having at least one seed). These plants also accumulated more biomass and had greater numbers of all components of yield. In addition, they showed greater proportionate allocation to reproduction. In all density treatments the second flower cohort (produced 33–35 days after seeds were sown) made the greatest contribution to yield (43–78%). When flower production began, the rate of leaf initiation declined; leaf mortality seemed coupled to the onset of fruit production and was most severe in plants that had many pods to mature. The probability that flowers produced under any density regime would become pods and that these pods in turn would become marketable pods was assessed. Pod production was broken down into two stages: the transition from flower to fruit and from fruit to marketable pod. The results suggest that the transition from flower to fruit is not resource-limited, but the transition from fruit to marketable pod is dependent on current resource supply. When the data are examined on a per pot basis, plants at the highest density were most productive in terms of nonproductive tissues. However, an intermediate density (equivalent to 200 plants/m2) produced the greatest total reproductive biomass and the greatest number of marketable pods per unit area. The value of leaf and flower demography as measures of uniformity of maturation, optimal planting density, and cultivar performance is discussed. Key words: density, flower demography, fruit demography, leaf demography, Phaseolus vulgaris, yield.

scholarly journals Effect of Saline Water Stress in the Presence of Silicon Foliar Application on Growth, Productivity and Chemical Constituents of Chia (Salvia hispanica L.) under Egyptian Conditions

2020 ◽  
pp. 28-45
Author(s):  
W. M. A. Moghith ◽  
A. S. M. Youssef ◽  
M. A. Abd El-Wahab ◽  
Y. F. Y. Mohamed ◽  
M. Abou El-Ghait, Eman
Keyword(s):  
Combination Treatment ◽  
Saline Water ◽  
Chemical Constituents ◽  
Negative Relationship ◽  
Foliar Spray ◽  
Growth And Yield ◽  
Root Weight ◽  
High Concentration ◽  
Salvia Hispanica ◽  
Salvia Hispanica L

The pot experiment was carried out during two successive seasons (2016/2017 & 2017/2018) to study the effect of five levels of salinity and three levels of silicon (Si), as a foliar-spray application as well as their combinations on growth, productivity and chemical constituents of chia (Salvia hispanica L.) plants. Results showed that there was a negative relationship between vegetative growth measurements i.e., plant height, fresh weight and dry weight, flowering growth and yield parameters i.e., main inflorescence height, main inflorescence weight, inflorescences weight, seeds weights, weight of 1000 seeds and calculated seeds yield /m2 and root growth measurements i.e. root length, root weight and root diameter values and salinity treatments in both seasons. Hence, as the concentrations of salinity increased, the values of these parameters decreased to reach the maximum decreasing at the high concentration (4.69 dS m-1). Therefore, the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon scored the highest values of these parameters, in the 1st and 2nd seasons. Meanwhile, the maximum values of N, P and K contents were recorded by the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon in both seasons. Whereas, the highest values of free proline, sodium and chloride content were gained by the high concentration of salinity 4.96 dS m-1 especially those received silicon at 0 ppm in both seasons. Conclusively, the highest growth, productivity and chemical constituents of chia (Salvia hispanica L.) plant, it is preferable to grow the plants under saline water irrigation concentration at (0.68 dS m-1) and spray with silicon at 2000 ppm.

scholarly journals Economically Optimal Plant Density for Machine-harvested Edamame

HortScience ◽  
2020 ◽  
Vol 55 (3) ◽  
pp. 368-373
Author(s):  
Daljeet S. Dhaliwal ◽  
Martin M. Williams
Keyword(s):  
Glycine Max ◽  
Crop Production ◽  
Field Experiments ◽  
Plant Density ◽  
Plant Morphology ◽  
Growth And Yield ◽  
Seeding Rate ◽  
Fresh Market ◽  
Branch Number ◽  
Area Index

Consumer demand for edamame [Glycine max (L.) Merr.], the vegetable version of soybean (Glycine max), has grown during the past decade in North America. Domestic production of edamame is on the rise; however, research to guide fundamental crop production practices, including knowledge useful for developing appropriate recommendations for crop seeding rate, is lacking. Field experiments near Urbana, IL, were used to quantify edamame response to plant density and determine the economically optimal plant density (EOPD) of machine-harvested edamame. Crop growth and yield responses to a range of plant densities (24,700 to 395,100 plants/ha) were quantified in four edamame cultivars (AGS 292, BeSweet 292, Gardensoy 42, and Midori Giant) across 2 years. Plots were harvested with the Oxbo BH100, a fresh market bean harvester. In general, as plant density increased, branch number and the ratio of pod mass to vegetative mass decreased, while plant height and leaf area index increased. Recovery, the percent of marketable pods in the machine-harvested sample, varied among cultivars from 86% to 95%. Results identified the EOPD for machine-harvested edamame ranged from 87,000 to 120,000 plants/ha. When considering the effect of plant density on plant morphology, as well as seeding cost, harvester efficiency, recovery, and marketable pod yield, edamame EOPDs are considerably lower than seeding rates of up to 344,200 seeds/ha recommended in recent publications.

scholarly journals Evaluating the effect of plant population densities and nitrogen application on the leaf area index of maize in a reclaimed wetland in Kenya

2016 ◽  
Vol 8 (1) ◽  
pp. 139-148 ◽  
Author(s):  
Catherine Waithira Njuguna ◽  
Hellen Wangechi Kamiri ◽  
John Robert Okalebo ◽  
Wilson Ngetich ◽  
Syphilline Kebeney
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Density ◽  
Block Design ◽  
Nitrogen Application ◽  
Maize Production ◽  
Area Index ◽  
High Plant Density ◽  
Plant Densities ◽  
Set Up

Abstract Maize is the main staple food in Kenya with over 90% of Kenyans relying on it. While the annual national consumption is increasing, the production of this crop has been on the decline in the last two decades. Maize production in Kenya fell by 33.4% in 2013 with Nyeri among the counties said to be grappling with the production of this crop. Land pressure is one of the major causes of decreased availability of food as well as soil depletion and encroachment upon fragile ecosystems such as wetlands. Nitrogen is a key nutrient in the production of maize, and its deficiency is a major factor limiting its production. This study investigated the effect of N application at 120 kg N/ha and maize density on the Leaf Area Index in reclaimed wetland soils in an experimental set-up comprising a randomized complete block design with three replications. The research was carried out in Nyeri County, Kenya. Leaf Area Index (LAI) was determined using the given SunScan formula. Measurements were done continuously until crop physiological maturity. Results indicated that the leaf area index increased with nitrogen application and reduced with spacing for most treatments. There were no significant differences between the two methods (Copy Method and SunScan). Leaf Area Index (LAI) was high in treatments containing nitrogen and high plant density. It was concluded that high plant density gives high LAI. 50 cm * 12.5 cm (-N) and 50 cm * 12.5 cm (+N) are the recommended plant densities for the site.

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