scholarly journals Allometric relationship and leaf area modeling estimation on chia by non-destructive method

2021 ◽  
Vol 25 (5) ◽  
pp. 305-311
Author(s):  
Patrícia C. H. Goergen ◽  
Isabel Lago ◽  
Natalia T. Schwab ◽  
Alexandre F. Alves ◽  
Charles P. de O. Freitas ◽  
...  
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Main Stem ◽  
Allometric Relationship ◽  
Linear Quadratic ◽  
Predictive Capacity ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Salvia Hispanica L ◽  
Non Destructive

ABSTRACT This study aimed to obtain equations to estimate leaf area from linear leaf dimensions and establish the allometric relationship between leaf area and the number of leaves on the main stem of chia (Salvia hispanica L.) at different sowing times. The experiment was conducted in the agricultural year 2016/2017 on five sowing times in Santa Maria, RS, Brazil, in a randomized block design with four repetitions. In each plot, ten random plants were marked weekly during the vegetative phase to determine the number of leaves (NL) in the main stem, and three of these for the determination of leaf area (LA). A total of 70 leaves of different sizes were used to calibrate the model. Another 106 leaves were used to test the predictive capacity of the equations by various statistical indices. The length (L) and the largest leaf width (W) were measured. Leaf collection was carried out during the cycle, in all sowing times to represent all leaf sizes. The linear, quadratic, exponential, and potential models were adjusted. The non-destructive method, through the linear dimensions of the leaf, is appropriate for estimating the leaf area in chia. The general equation LA = 0.642 (L x W) can be used to estimate the leaf area of the chia plants without loss of precision. The potential model is appropriate to characterize the allometric relationship between leaf area evolution and the number of leaves accumulated in the main stem of chia at different sowing times.

scholarly journals Optimasi Dosis Pupuk Kandang Ayam dan NPK pada Budidaya Kubis Bunga (Brassica oleracea var. Botrytis L.)

2021 ◽  
Vol 2 (1) ◽  
pp. 32
Author(s):  
Irpan Gunawan ◽  
Atak Tauhid ◽  
Isna Tustiyani
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Affected Plant ◽  
Two Factors ◽  
Number Of Leaves ◽  
Npk Fertilizer

<p><em>Cauliflower is one of the vegetables for consumers. The demand for cauliflower was rising so it must be scaled up with fertilizer. The purpose of this study was to study the effect of chicken manure and NPK fertilizer on the growth and yield of cauliflower. The study was conducted in Sukasenang Village, Banyuresmi Sub-district, Garut Regency from July to August 2019. The study used a Randomized Block Design (RBD) in two factors each of the 3 rates with 2 replications. The first factor was the rates of chicken manure which consisted of 0, 10 and 20 tons ha<sup>-1</sup>; the second factor was NPK fertilizer which consists of 0, 100 and 200 kg ha<sup>-1</sup>. The parameter of this research was plant height, number of leaves, leaf area, weight and diameter crud. The results showed that there was no interaction between the chicken manure and NPK fertilizer. The treatment of 20 tons ha<sup>-1</sup> chicken manure affected the variable plant height, the number of leaves and leaf area. The rates of 200 kg ha<sup>-1</sup> NPK fertilizer had affected plant height, number of leaves, weight and diameter crud.</em></p>

scholarly journals Morphophysiology of guava under saline water irrigation and nitrogen fertilization

2018 ◽  
Vol 22 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Idelfonso L. Bezerra ◽  
Reginaldo G. Nobre ◽  
Hans R. Gheyi ◽  
Leandro de P. Souza ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
N Fertilization ◽  
Water Salinity ◽  
Randomized Block Design ◽  
Irrigation Water Salinity ◽  
N Dose ◽  
Number Of Leaves

ABSTRACT The aim of this study was to evaluate the growth of grafted guava cv. ‘Paluma’ subjected to different concentrations of salts in irrigation water and nitrogen (N) fertilization. The plants were transplanted to 150 L lysimeters and under field conditions at the Science and Agri-food Technology Center of the Federal University of Campina Grande, in the municipality of Pombal - PB. The experiment was conducted in randomized block design in a 5 x 4 factorial scheme, with three replicates, and the treatments corresponded to five levels of electrical conductivity of irrigation water - ECw (0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the crop). The doses equivalent to 100% corresponded to 541.1 mg of N dm-3 of soil. Irrigation water salinity above 0.3 dS m-1 negatively affects the number of leaves, leaf area, stem diameter, dry phytomass of leaves, branches and shoots . A significant interaction between irrigation water salinity and N fertilization was observed only for the number of leaves and leaf area at 120 days after transplanting. N dose above 70% of the recommendation (378.7 mg N dm-3 soil) did not mitigate the deleterious effects caused by salt stress on plant growth.

scholarly journals Effects of plant growth regulators in heliconia ‘Red Opal’

2016 ◽  
Vol 22 (3) ◽  
pp. 301
Author(s):  
Ana Cecilia Ribeiro de Castro ◽  
Fernando José Hawerroth ◽  
Carlos Alberto Kenji Taniguchi ◽  
Tiago Freitas Silva ◽  
Nazaré Suziane Soares
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Block Design ◽  
Dry Mass ◽  
Potted Plants ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
One Year

The objective of this study was to evaluate growth regulators with purpose of reducing the size of heliconia ‘Red Opal’ potted plants. The experiment was carried out in randomized block design with five treatments (trinexapac-ethyl and paclobutrazol at rates of 37.5 and 75.0 mg of active ingredient per pot and control without growth regulator) and five replicates. The treatments were applied 40 days after planting the rhizomes in pots filled with soil. Thirty and 150 days after the growth regulator application, plant height, number of leaves and shoots, petioles length and leaf area were evaluated. One year after planting the rhizomes in pots the number of inflorescence and leaves (leaves, sheathing leaf bases and inflorescences) and rhizomes (rhizomes and roots) dry mass were determined. Trinexapac-ethyl had no differences compared to the control in any of the variables evaluated. Paclobutrazol proved effective in reducing plant height, leaf area and petiole length and increase in number of leaves and shoots but the effect was temporary. Also, it did not affect the inflorescences production and leaves and rhizomes dry mass. Paclobutrazol is efficient to promote height reduction and to increase the number of shoots in heliconia ‘Red Opal’ potted plants without affect the inflorescence formation but its effects is temporary.

scholarly journals Perbedaan pertumbuhan dan produktivitas varietas bayam hijau dan bayam merah

Jurnal Agro ◽  
2022 ◽  
Vol 8 (2) ◽  
pp. 287-298
Author(s):  
Arya Widura Ritonga ◽  
Muhammad Syaifuk Ar Rosyid ◽  
Axel Anderson ◽  
Muhamad Achmad Chozin ◽  
Purwono Purwono
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Green Leaf ◽  
Lower Percentage ◽  
Leaf Color ◽  
High Productivity ◽  
Randomized Block Design ◽  
White Leaf ◽  
Number Of Leaves

Bayam termasuk salah satu sayuran terpenting di Indonesia karena paling banyak dikonsumsi setelah kangkung. Bayam hijau dan bayam merah merupakan jenis bayam paling banyak ditanam dan dikonsumsi. Penelitian ini bertujuan untuk mengetahui perbedaan pertumbuhan dan produktivitas varietas bayam hijau dan bayam merah. Penelitian dilakukan pada Februari – April 2021 di Kebun Percobaan Leuwikopo, Departemen Agronomi dan Hortikultura, Fakultas Pertanian, IPB University. Sebanyak 9 varietas bayam hijau (Maryland, Richie, Maestro, Benua, Doly, Khanafiah, Manila, Pacific, White Leaf) dan 4 varietas bayam merah (Mira, Baret Merah, Clara, Aurora) ditanam menggunakan rancangan kelompok lengkap teracak dengan tiga ulangan. Hasil penelitian memperlihatkan bahwa varietas bayam hijau memiliki kandungan persentase warna hijau daun lebih banyak namun memiliki persentase warna biru dan merah yang lebih rendah dibandingkan varietas bayam merah. Hasil penelitian juga memperlihatkan bahwa varietas bayam hijau menghasilkan tinggi tanaman dan produktivitas yang lebih baik dibandingkan varietas bayam merah, namun varietas bayam merah menghasilkan luas daun dan jumlah daun per tanaman saat panen yang lebih baik besar dibandingkan varietas bayam hijau. Varietas White Leaf merupakan varietas bayam yang sangat baik karena memiliki persentase warna hijau daun yang tinggi, luas daun yang besar dan produktivitas yang tinggi. Spinach is one of the most important vegetables in Indonesia because it was the second most consumed after kangkung. Green spinach and red spinach are the most widely grown and consumed types of spinach. This study aimed to determine differences in growth and productivity between varieties of green spinach and red spinach. The research was conducted in February – April 2021 at the Leuwikopo Experimental Field, Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University. A total of nine varieties of green spinach and four varieties of red spinach were planted using a completely randomized block design with three replications. The results showed that the green spinach variety contained a higher percentage of green leaf color but had a lower percentage of blue and red leaf color than the red spinach varieties. The results also showed that the green spinach varieties produced better plant height and productivity than the red spinach varieties, but the red spinach produced better leaf area and a number of leaves per plant at harvest than the green spinach. The White Leaf variety is the excellent spinach variety because it has a high percentage of green leaf color, large leaf area, and high productivity.

scholarly journals PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG PROLIFIK PADA BERBAGAI JARAK TANAM DALAM BARIS DENGAN SISTEM TANAM JAJAR LEGOWO

2020 ◽  
Vol 4 (1) ◽  
pp. 13-23
Author(s):  
Intan Dwi Lestari
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Stem Diameter ◽  
Growth And Yield ◽  
Area Index ◽  
Plant Weight ◽  
South Sulawesi ◽  
Randomized Block Design ◽  
Number Of Leaves

This research aimed to determine the effect of spacing on the growth and yield of corn. It was conducted from July to November 2019 at the Experimental Plantation of Cereal Crops Research Institute (BalitSereal), Maros, South Sulawesi. The experimental method used was a randomized block design consisting of 4 treatments: J1= (100 cm x 50 cm) x 20 cm, one seed per hole; J2= (100 cm x 50 cm) x 30 cm, alternating between one seed per hole and two seeds per hole; J3= (100 cm x 50 cm) x 40 cm, two seeds per hole; J4= (100 cm x 50 cm) x 15 cm, one seed per hole. The observed variables were plant height, number of leaves, stem diameter, leaf area index, Anthesis Silking Interval (ASI), length of cob 1 and cob 2, diameter of cob 1 and cob 2, weight of shelled seeds/plant, weight of 100 seeds on cob 1 and cob 2, and production of shelled seeds/hectare. The experimental results showed that plant spacing affected the growth and production of maize. The J3 spacing (100 cm x 50 cm) x 40 cm with two seeds per hole significantly affected the leaf area index and gave the highest average stem diameter. The J2 spacing with (100 cm x 50 cm) x 30 cm with alternating between one seed per hole and two seeds per hole produced the highest production in terms of weight of shelled seeds/plant, weight of 100 seeds and yield of shelled seeds/hectare.

scholarly journals Morfofisiologi Ratun Padi Sistem Tanam Benih Langsung di Lahan Pasang Surut

2017 ◽  
Vol 44 (3) ◽  
pp. 228 ◽  
Author(s):  
Evriani Mareza ◽  
Zainal Ridho Djafar ◽  
Rujito Agus Suwignyo ◽  
Dan Andi Wijaya
Keyword(s):  
Leaf Area ◽  
Crop Production ◽  
Block Design ◽  
Soil Surface ◽  
Dry Weight ◽  
Direct Seeding ◽  
Randomized Block Design ◽  
Tidal Swamp ◽  
Number Of Leaves ◽  
Cutting Height

<p>ABSTRACT<br /><br />The morphophysiology of ratoon is different from the main plant of rice and was influenced by location and cultivation.This research was intended to evaluate morphophysiology characters of rice ratoon planted by direct seeding system in tidal swamp at various stubble cutting height. The experiment was conducted in November 2013-April 2014 at tidal swamp overflow type B in Telang Sari Village, District of Tanjung Lago, Banyuasin, South Sumatra Province. The experiment used randomized block design with 5 replications. Treatment was stubble cutting height 10, 20, 30, 40 and 50 cm above the soil surface. Rice was planted at 4 m x 5 m plot, the distance between plot 1 m. Data were analyzed by test of variance and 5% HSD test. Morphophysiological characters of rice ratoon were influenced by stubble cutting height. Cutting height of 20-40 cm above soil surface increased the ratoon number of tillers per hill, leaf area per hill, dry weight per hill, percentage of empty grains per panicle, grain weight per hill and percentage ratoon/main crop production per hill. The higher stubble cutting, the lower the number of leaves per tiller, leaf area per tiller, carbohydrate content, and number of grains per panicle of ratoon, however it accelerated age of flowering and harvesting. <br /><br />Keywords: direct seeding system, ratoon system, rice growth and production, stubble cutting height<br /><br /></p>

scholarly journals Effects of Fruit Thinning and Main Stem Pruning in Melon Crops

2019 ◽  
pp. 1-10
Author(s):  
Gleyce Lacerda da Silva ◽  
Roberto Cleiton Fernandes Queiroga ◽  
Francisco Hevilásio Freire Pereira ◽  
Francimalba Francilda de Sousa ◽  
Zaqueu Lopes da Silva ◽  
...  
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Soluble Sugars ◽  
Main Stem ◽  
Soluble Solids ◽  
Fruit Thinning ◽  
Randomized Block Design ◽  
Total Productivity ◽  
Set Up

Objective: This study aimed to assess the productivity and quality of a melon crop treated with fruit thinning and main stem pruning under field conditions. Experimental Design: The treatments comprised the amount of fruit thinning in the plant (one, two and without thinning) and the period of main stem pruning (35, 40, 45 and 50 days after transplanting - DAT). The crop was set up in a randomized block design factorial of type 3x4, with five replications. Location and Duration of the Study: The experiment carried out at the Center for Agrifood Science and Technology (CCTA) of the Federal University of Campina Grande (UFCG), Campus Pombal - PB, Brazil, from December 2016 to February 2017. Methodology: The Hopey King hybrid of the Cantaloupe group was cultivated at a spacing of 2.0 x 0.4 m. Results: The plants without thinning of fruits provided lower values ​​of leaf area and fruits of lower mass. However, due to their higher quantity per hectare, the crop total productivity was high. On the other hand, plants with fewer fruits had the highest values ​​of soluble solids, total and non-reducing soluble sugars. The leaf area, fruit mass, total productivity, and the concentration of reducing and non-reducing soluble sugars were higher when the plants were pruned at 35 DAT. Conclusion: The fruit thinning and main stem pruning affected the production and quality of melon fruits significantly. For more demanding markets, we recommend to treat the plants with one or two fruits and prune at 35 days after transplantation, aiming to enhance the quality variables.

scholarly journals PENGARUH PUPUK ORGANIK CAIR NASA TERHADAP PERTUMBUHAN BIBIT TANAMAN JATI PUTIH (Gmelina arborea Roxb)

AGRICA ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 10-22
Author(s):  
Josina Irene Brigetha Hutubessy
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fresh Weight ◽  
Plant Seed ◽  
Optimum Dosage ◽  
Randomized Block Design ◽  
Seed Growth ◽  
Number Of Leaves

This research aims to determine the effect of concentration of organic fertilizer Super NASA to the growth of seeds of white teak and to know the optimum dosage of organic fertilizer Super NASA can increase the growth of NASA plant seed white teak. The design used in this study was a Randomized Block Design with the treatment used is N0: without fertilizer Super NASA NASA, N1: Fertilizer NASA7 .5 ml seeds-1, N2: Fertilizer NASA 15 ml seeds-1, N3: Fertilizer NASA 22.5 ml seeds-1, N4: Fertilizer NASA 30 ml seeds-1. Variable observation in this study is the height of the plant, number of leaves, leaf area, fresh weight tan-1, fresh and dry weight oven tan-1. The results showed that the granting of Fertilizer NASA exerted a highly significant effect on the height of plant (23,65%), the number of leaves is not significant, leaf area (53,61%), fresh weight tan-1 (60,89%) and dry weight tan-1 (55,43%). The optimum dosage of Fertilizers NASA give the seed growth of white teak is best on the seed-1is 30 ml.

scholarly journals The production of Physalis spp. seedlings grown under different-colored shade nets

2016 ◽  
Vol 38 (2) ◽  
pp. 257 ◽  
Author(s):  
Daniel Fernandes da Silva ◽  
Rafael Pio ◽  
Joyce Dória Rodrigues Soares ◽  
Paulyene Vieira Nogueira ◽  
Pedro Maranha Peche ◽  
...  
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Block Design ◽  
Dry Mass ◽  
Additional Treatment ◽  
Light Spectrum ◽  
Treatment Control ◽  
Area Index ◽  
Randomized Block Design ◽  
Number Of Leaves

The objective of this study was to evaluate the production of seedlings of Physalis L. species under different-colored shade nets. Four shade nets individually stained white, blue, red and black, all with 50% shading, were used in this study, and an additional  treatment (control) was used in which seedlings were grown in full sun. The study examined four species of Physalis, namely, P. peruviana, P. pubescens, P. minima and P. ixocarpa. The experiment followed a randomized block design with three blocks and 25 seeds per plot. The species were sown in styrofoam trays. Germination was monitored daily to calculate the Emergency Velocity Index (EVI) and stabilize the overall percentage of emergence. Height, stem diameter, number of leaves, leaf area index and dry mass of seedlings were assessed at 50 days after sowing. The study found that these species react differently to changes in the light spectrum. Seedlings of P. peruviana should be grown under a white or red shade net; of P. pubescens under a white or black shade net; of P. minima under a white, red or black shade net; and of P. ixocarpa under a white shade net. For all species, 50% shade should be used. 

PENGARUH JARAK TANAM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KACANG TANAH (Arachis hipogaea L.)

AGRICA ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 12-21
Author(s):  
Josina Irene Brigetha Hutubessy
Keyword(s):  
Leaf Area ◽  
Seed Weight ◽  
Block Design ◽  
Growth And Yield ◽  
Area Index ◽  
Fresh Seed ◽  
Randomized Block Design ◽  
Maximal Yield ◽  
Number Of Leaves ◽  
Planting Distance

This research aims at investigating the influence of planting distance towards growth and yield of peanut and optimal planting distance that can raise the growth of peanut seeds. The method used was Randomized Block Design with treatment as follows: J1 = planting distance 10 cm x 15 cm, J 2 = planting distance 15 cm x 15 cm, J 3 = planting distance 10 cm x 20 cm 4, J = planting distance 15 cm x 20 cm, J 5 planting distance = 10 cm x 30 cm, J 6 = 15 cm x 30 cm. Observation Variables in this study are the height of the plant, a number of leaves, leaf area, leaf area index, Podsnumber/Tan, pods weight/Tan, Seedsnumber /Tan, Fresh Seed Weight/Ha, Dry Seed Weight/Tan, heavy Seed dry/Ha, Fresh maximal yield and residues weight/Tan, dry maximal yield and residue/Ha. The result of this experiment found that the use of distance planting can give a good influence on each variable observation, both on the observation of growth as well as on the yield of peanut.

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