scholarly journals Pemanfaatan tandan kosong kelapa sawit sisa jamur merang (Volvariella volvacea)(TKSJ) sebagai pupuk organik pada pembibitan kelapa sawit Utilization of spent mushroom (Volvariella volvacea) media derived from empty fruit bunches of oil palm (SMEB) as organic fertilizer on oil palm seedling

2016 ◽  
Vol 75 (2) ◽  
Author(s):  
Happy WIDIASTUTI ◽  
. TRI-PANJI
Keyword(s):  
Organic Carbon ◽  
Oil Palm ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Chemical Fertilizer ◽  
Volvariella Volvacea ◽  
Fresh Weight ◽  
Empty Fruit Bunches ◽  
Leaf Dry Weight

SummaryThe utilization of lignocellulolitic emptyfruit-bunches of oil-palm (EFBOP) material asstraw mushroom (Volvariella volvacea) mediacould produce short chain organic carbon andnutrients which may be available for growth ofplant. This research was aimed to determine theeffect of spent mushroom media amendmentderived from empty fruit bunches of oil palm(SMEB) as organic fertilizer on the growth andnutrient uptake of oil palm seedling. Theexperiment was conducted at greenhouse usingacid soil. Oil palm seedling was grown in 60 x 50cm polybags. The experiment was carried out toexamine 20 treatments i.e. combinations of fourlevel of SMEB (0, 25%, 50%, and 75% w/w) andfive dosages of conventional fertilizer (0, 25%,50%, 75%, and 100%) recommended dosages.The experiment was conducted using completerandomized design with factorial type. Theresearch showed that the amendment of SMEB atthe level of 25% could increase the height ofseedling, fresh weight of root, stem, and seedlingsas well as dry weight of oil palm stem. However,for leaf dry weight, a higher addition of SMEB upto 50% was needed. Fertilizing at 25% ofrecommended dosage could increase the seedlingheight, fresh weight of stem and leaf while forseedling fresh weight and leaf number, higheraddition of fertilizer up to 50% was needed.Significantly higher uptake of K and Mg wasobserved on the amendment of 75% of SMEB.The higher addition of SMEB (up to 75% w/w)did not decrease any growth parameters andnutrient uptake. However, the addition of 100%of recommended chemical fertilizer tended todecrease various growth parameters and uptakeof N, P, K, and Mg of oil palm seedling.RingkasanPenggunaan bahan lignoselulosa sebagaimedium jamur merang (Volvariella volvacea)diketahui dapat menghasilkan senyawa karbonrantai pendek demikian pula hara tersedia,sehingga diduga bahan ini dapat digunakansebagai pupuk organik untuk tanaman. Penelitiandilakukan untuk mengetahui pengaruh pemberiantandan kosong kelapa sawit (TKKS) sisa mediumjamur merang (TKSJ) terhadap pertumbuhan danserapan hara bibit kelapa sawit. Percobaandilakukan di rumah kaca menggunakan tanahbereaksi masam. TKKS sisa medium jamurmerang (TKSJ) sesuai dosis perlakuan dicampurdengan tanah dan selanjutnya bibit kelapa sawitditanam di polibag berukuran 60 x 50 cm.Percobaan dilakukan untuk menguji 20 perlakuanyang merupakan kombinasi empat tingkat TKSJ(0, 25%, 50% dan 75% b/b) dan lima dosis pupukkonvensional (0, 25%, 50%, 75% dan 100%)dosis rekomendasi. Percobaan dilakukan meng-gunakan rancangan acak lengkap dengan polafaktorial. Hasil percobaan menunjukkan bahwapemberian TKSJ pada tingkat 25% dapatmeningkatkan tinggi bibit, bobot basah akar,batang, dan bibit serta bobot kering batangkelapa sawit. Namun, untuk peubah bobot keringdaun diperlukan pemberian TKSJ yang lebihtinggi yaitu 50%. Pemupukan pada dosis 25%rekomendasi meningkatkan tinggi, bobot basahbatang dan daun sedangkan untuk jumlah daundan bobot basah bibit diperlukan dosis pupuk50%. Serapan hara K dan Mg nyata lebih tinggipada pemberian 75% TKSJ. Pemberian TKSJpada jumlah yang tinggi (hingga 75% b/b) tidakmenyebabkan penurunan berbagai peubah per-tumbuhan dan serapan hara, namun pemberianpupuk 100% rekomendasi cenderung menurun-kan berbagai peubah pertumbuhan dan serapanhara N, P, K, dan Mg bibit kelapa sawit.

scholarly journals Pemanfaatan tandan kosong kelapa sawit sisa jamur merang (Volvariella volvacea)(TKSJ) sebagai pupuk organik pada pembibitan kelapa sawit Utilization of spent mushroom (Volvariella volvacea) media derived from empty fruit bunches of oil palm (SMEB) as organic fertilizer on oil palm seedling

2016 ◽  
Vol 75 (2) ◽  
Author(s):  
Happy WIDIASTUTI ◽  
. TRI-PANJI
Keyword(s):  
Organic Carbon ◽  
Oil Palm ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Chemical Fertilizer ◽  
Volvariella Volvacea ◽  
Fresh Weight ◽  
Empty Fruit Bunches ◽  
Leaf Dry Weight

SummaryThe utilization of lignocellulolitic emptyfruit-bunches of oil-palm (EFBOP) material asstraw mushroom (Volvariella volvacea) mediacould produce short chain organic carbon andnutrients which may be available for growth ofplant. This research was aimed to determine theeffect of spent mushroom media amendmentderived from empty fruit bunches of oil palm(SMEB) as organic fertilizer on the growth andnutrient uptake of oil palm seedling. Theexperiment was conducted at greenhouse usingacid soil. Oil palm seedling was grown in 60 x 50cm polybags. The experiment was carried out toexamine 20 treatments i.e. combinations of fourlevel of SMEB (0, 25%, 50%, and 75% w/w) andfive dosages of conventional fertilizer (0, 25%,50%, 75%, and 100%) recommended dosages.The experiment was conducted using completerandomized design with factorial type. Theresearch showed that the amendment of SMEB atthe level of 25% could increase the height ofseedling, fresh weight of root, stem, and seedlingsas well as dry weight of oil palm stem. However,for leaf dry weight, a higher addition of SMEB upto 50% was needed. Fertilizing at 25% ofrecommended dosage could increase the seedlingheight, fresh weight of stem and leaf while forseedling fresh weight and leaf number, higheraddition of fertilizer up to 50% was needed.Significantly higher uptake of K and Mg wasobserved on the amendment of 75% of SMEB.The higher addition of SMEB (up to 75% w/w)did not decrease any growth parameters andnutrient uptake. However, the addition of 100%of recommended chemical fertilizer tended todecrease various growth parameters and uptakeof N, P, K, and Mg of oil palm seedling.RingkasanPenggunaan bahan lignoselulosa sebagaimedium jamur merang (Volvariella volvacea)diketahui dapat menghasilkan senyawa karbonrantai pendek demikian pula hara tersedia,sehingga diduga bahan ini dapat digunakansebagai pupuk organik untuk tanaman. Penelitiandilakukan untuk mengetahui pengaruh pemberiantandan kosong kelapa sawit (TKKS) sisa mediumjamur merang (TKSJ) terhadap pertumbuhan danserapan hara bibit kelapa sawit. Percobaandilakukan di rumah kaca menggunakan tanahbereaksi masam. TKKS sisa medium jamurmerang (TKSJ) sesuai dosis perlakuan dicampurdengan tanah dan selanjutnya bibit kelapa sawitditanam di polibag berukuran 60 x 50 cm.Percobaan dilakukan untuk menguji 20 perlakuanyang merupakan kombinasi empat tingkat TKSJ(0, 25%, 50% dan 75% b/b) dan lima dosis pupukkonvensional (0, 25%, 50%, 75% dan 100%)dosis rekomendasi. Percobaan dilakukan meng-gunakan rancangan acak lengkap dengan polafaktorial. Hasil percobaan menunjukkan bahwapemberian TKSJ pada tingkat 25% dapatmeningkatkan tinggi bibit, bobot basah akar,batang, dan bibit serta bobot kering batangkelapa sawit. Namun, untuk peubah bobot keringdaun diperlukan pemberian TKSJ yang lebihtinggi yaitu 50%. Pemupukan pada dosis 25%rekomendasi meningkatkan tinggi, bobot basahbatang dan daun sedangkan untuk jumlah daundan bobot basah bibit diperlukan dosis pupuk50%. Serapan hara K dan Mg nyata lebih tinggipada pemberian 75% TKSJ. Pemberian TKSJpada jumlah yang tinggi (hingga 75% b/b) tidakmenyebabkan penurunan berbagai peubah per-tumbuhan dan serapan hara, namun pemberianpupuk 100% rekomendasi cenderung menurun-kan berbagai peubah pertumbuhan dan serapanhara N, P, K, dan Mg bibit kelapa sawit.

scholarly journals PEMANFAATAN PUPUK ORGANIK CAIR PAITAN (Tithonia diversifolia) PADA BERBAGAI DOSIS DAN RAGAM APLIKASINYA TERHADAP PERTUMBUHAN KAILAN (Brassica oleracea Var. Acephala)

2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
AHMAD TAOFIK ◽  
SOFIYA HASANI ◽  
AYU CAHYANINGTYAS ◽  
BUDY FRASETYA
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Analysis Of Variance ◽  
Growth Parameters ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fresh Weight ◽  
Application Method ◽  
Randomized Design ◽  
Two Factors

The paitan plant contains allelopathic compounds for other plants so that the utilize of paitan plant as a source of liquid organic fertilizer (LOF) has not been widely applied. This research aimed to study the interaction between LOF dosage and appropriate application method of LOF to increase the growth of kailan plants. The research conducted at experimental garden of UIN Bandung from June-August 2016. The experimental design was a completely randomized design with two factors and replicated four times. The first factor was application methods (A), i.e. a1=direct application to the soil, and a2= spraying. The second factor was LOF dosage (T), i.e. t0: 0 ml plant-1, t1: 20 ml plant-1, t2: 40 ml plant-1, t3: 60 ml plant-1, t4: 80 ml plant-1. The growth parameters observed i.e. plant height (14, 21, 28, 35 and 42 Day after Transplanting (DAT)), leaf area 42 DAT, plant dry weight 42 DAT, and plant fresh weight 42 DAT. The data then analyzed with analysis of variance at a significant level of 5%. If the analysis of variance was significant, the Duncan multiple range test was used at α=5%. The research results showed there was no interaction between method of application with a various dosage of paitan LOF to all of the growth parameters. The application paitan LOF showed similar growth in terms of plant height, leaf area, plant dry, and plant fresh weight. The application method of paitan LOF direct to the soil or spraying to leaves can not increase kailan plant growth.

Okra (Abelmoschus esculentus L.) yield influenced by Albizia leaf mould and banana peel with half dosage of NP chemical fertilizers

2020 ◽  
Vol 55 (4) ◽  
pp. 273-282
Author(s):  
UHN Gayathri ◽  
Thayamini H Seran
Keyword(s):  
Growth Parameters ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Fruit Yield ◽  
Chemical Fertilizer ◽  
Abelmoschus Esculentus ◽  
Banana Peel ◽  
Chemical Fertilizers ◽  
Combined Application

Dried Albizia leaf mould (10 mt/ha) and banana peel (0.1-0.5 mt/ha) with reduced level of NP chemical fertilizers were applied on the production of okra (Abelmoschus esculentus L.).The experiment was carried out in a randomized complete block design with seven treatments. The result revealed that the combined application of 10 mt/ha leaf mould and 0.1 mt/ha banana peel with 50% NP chemical fertilizer as basal and 50% N as top dressing (T6) exhibited higher yield than recommended 100% NPK chemical fertilizer alone (T2). Plants treated with fertilizers showed significant influences (P<0.05) in the growth parameters such as leaf area, length, fresh and dry weight among treatments. Remarkable differences (P>0.05) in number of fruits per plant were obtained. Among the treatments, considerable variations in fruit diameter, fresh and dry weight of fruit (P<0.05) were observed. An increase in the fresh weight of fruit per plant by approximately 8.5% was obtained in T6 when compared with the control (T2). The marketable fruit yield per m2 was 654.71 g in T6 and 603.61 g in the control. It was also noted that combined use of organic (leaf mould with banana peel) and chemical fertilizers increased fruit yield when compared to the application of organic fertilizer (leaf mould with banana peel) alone as basal application. From this study, it could be concluded that Albizialeaf mould (10 mt/ha) and banana peel (0.1 mt/ha) with 50% NP chemical fertilizers as basal and also 50% N chemical fertilizer as top dressing could be used for obtaining high fruit yield in okra cultivation. Bangladesh J. Sci. Ind. Res.55(4), 273-282, 2020

Relations Between Growth Parameters in Oil Palm Seedlings Grown in Polybags

1980 ◽  
Vol 16 (3) ◽  
pp. 275-278 ◽  
Author(s):  
E. O. Lucas
Keyword(s):  
Leaf Area ◽  
Oil Palm ◽  
Growth Parameters ◽  
Weight Ratio ◽  
Dry Weight ◽  
Seedling Height ◽  
Fresh Weight ◽  
Area Index ◽  
Non Destructive ◽  
Selection Of

SUMMARYThe relation between some growth parameters in polybag oil palm nursery seedlings were assessed. ‘Non-destructive’ parameters such as leaf number, seedling height and girth were highly and positively correlated with one another and with the dry weight of seedlings. Amongst the ‘destructive’ parameters only leaf area, height/weight ratio and fresh weight were positively correlated with dry weight. The Leaf Area Index was poorly correlated with other parameters examined. The relevance of these findings to the selection of oil palm seedlings for transplanting into the field is discussed.

Respon Akar Bibit Aren Genjah (Arenga pinnata) Di Pembibitan Pada Pemberian Dosis dan Interval Pupuk Organik Cair Nasa

2018 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
Yetti Elidar
Keyword(s):  
Organic Fertilizer ◽  
Dry Weight ◽  
Treatment Combination ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Dose Study ◽  
Palm Sugar ◽  
Wet Weight ◽  
Completely Randomized Design ◽  
Leaf Dry Weight

Research on the response of roots of palm sugar palm seeds (Arenga pinnata) in nurseries at doses and intervals of Nasa liquid organic fertilizer. Aims to determine the dosage, interval and combination of dosages and fertilization intervals with Nasa liquid organic fertilizer which can provide the best dry weight of the roots in the nursery. The research design used was a Completely Randomized Design (CRD) with 3x3 factorial experiments and each treatment was repeated 8 (eight) times, consisting of: the first factor was the treatment of POC Nasa dose in a concentration of 3 cc POC Nasa per liter of water (D) consists of 3 levels, namely: d1 = 300 ml POC Nasa, d2 = 400 ml POC Nasa, d3 = 500 ml POC Nasa, while the second factor is the treatment of POC Nasa Interval (I) consisting of 3 levels, namely: i1 = 2 once a week, i2 = once every 3 weeks, i3 = once every 4 weeks. The results of the POC Nasa dose study had a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level are: d2 (400 ml of Nasa liquid organic fertilizer), the interval of liquid organic fertilizer Nasa has a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level is: i1 (once every 2 weeks). The treatment combination has no significant effect on all parameters. 

scholarly journals Growth and Antioxidant Responses in Iron-Biofortified Lentil under Cadmium Stress

Toxics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 182
Author(s):  
Ruchi Bansal ◽  
Swati Priya ◽  
Harsh Kumar Dikshit ◽  
Sherry Rachel Jacob ◽  
Mahesh Rao ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Dry Weight ◽  
Cadmium Stress ◽  
Antioxidant Enzyme Activities ◽  
Limited Information ◽  
Cd Stress ◽  
Fresh Weight ◽  
Cd Uptake ◽  
Cd Tolerance ◽  
Controlled Conditions

Cadmium (Cd) is a hazardous heavy metal, toxic to our ecosystem even at low concentrations. Cd stress negatively affects plant growth and development by triggering oxidative stress. Limited information is available on the role of iron (Fe) in ameliorating Cd stress tolerance in legumes. This study assessed the effect of Cd stress in two lentil (Lens culinaris Medik.) varieties differing in seed Fe concentration (L4717 (Fe-biofortified) and JL3) under controlled conditions. Six biochemical traits, five growth parameters, and Cd uptake were recorded at the seedling stage (21 days after sowing) in the studied genotypes grown under controlled conditions at two levels (100 μM and 200 μM) of cadmium chloride (CdCl2). The studied traits revealed significant genotype, treatment, and genotype × treatment interactions. Cd-induced oxidative damage led to the accumulation of hydrogen peroxide (H2O2) and malondialdehyde in both genotypes. JL3 accumulated 77.1% more H2O2 and 75% more lipid peroxidation products than L4717 at the high Cd level. Antioxidant enzyme activities increased in response to Cd stress, with significant genotype, treatment, and genotype × treatment interactions (p < 0.01). L4717 had remarkably higher catalase (40.5%), peroxidase (43.9%), superoxide dismutase (31.7%), and glutathione reductase (47.3%) activities than JL3 under high Cd conditions. In addition, L4717 sustained better growth in terms of fresh weight and dry weight than JL3 under stress. JL3 exhibited high Cd uptake (14.87 mg g−1 fresh weight) compared to L4717 (7.32 mg g−1 fresh weight). The study concluded that the Fe-biofortified lentil genotype L4717 exhibited Cd tolerance by inciting an efficient antioxidative response to Cd toxicity. Further studies are required to elucidate the possibility of seed Fe content as a surrogacy trait for Cd tolerance.

scholarly journals Applications of plant growth promoting bacteria and Trichoderma spp. for controlling Orobanche crenata in faba bean

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Mahmoud Ahmed Touny El-Dabaa ◽  
Hassan Abd-El-Khair
Keyword(s):  
Plant Growth ◽  
Faba Bean ◽  
Growth Parameters ◽  
Dry Weight ◽  
Research Centre ◽  
Plant Growth Promoting Bacteria ◽  
Fresh Weight ◽  
Orobanche Crenata ◽  
Trichoderma Spp ◽  
Shoot Dry Weight

Abstract Background Orobanche crenata is an obligate root parasite belonging to Orbanchaceae. Broomrape causes great damage to the faba bean. Several attempts were applied for controlling parasitic weeds. So, the aim of this work is to study the application of Trichoderma spp. as well as three rhizobacteria species in comparison to herbicidal effect of Glyphosate (Glialka 48% WSC) for controlling broomrape infesting faba bean (Vicia faba). Materials and methods Three pot experiments were carried out in the greenhouse of the National Research Centre, Dokki, Giza, Egypt during two successive winter seasons. Trichoderma inocula were adjusted to 3.6 × 108 propagules/ml and the bacterium inocula were adjusted at 107–109 colony-forming unit (CFU)/ml. All treatments were applied, before 1 week of sowing, at rate of 50 ml per pot in experiments I and II, while 100 ml per pot in experiment III. Results Trichoderma spp. (T. harzianum, T. viride and T. vierns) as well as three rhizobacteria species (Pseudomonas fluorescens, Bacillus subtilis and Bacillus pumilus) enhanced the growth parameters in faba bean plants, i.e. shoot length, shoot fresh weight, shoot dry weight and leaf number in the first experiment when applied without O. crenata infection. In the second experiment, all bio-control could protect plants against O. crenata infection, where it had better juvenile number reduction, than glyphosate after 2 months of application. Both B. subtilis and B. pumilus had the highest reduction to juvenile fresh weight, while their effect was equal to herbicide for juvenile dry weight, respectively. The bio-control agents had high effects until the 4th month, but it was less than that of the herbicide. In experiment III, the bio-control agents could highly reduce the juvenile parameters after 2 months, as well as juvenile fresh weight and juvenile dry weight after 4 months, than the herbicide, respectively. The bio-control agents were effective until 6 months, but less than the herbicide effect. All bio-control treatments highly increased the plant growth parameters, than the herbicide. Conclusion The application of Trichoderma spp. as well as rhizobacteria species could play an important role in controlling broomrape in faba bean as a natural bioherbicide.

scholarly journals Respons Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq.) terhadap Pemberian Pupuk Organik Asal Pelepah Kelapa Sawit dan Pupuk Majemuk NPK

Agrikultura ◽  
2017 ◽  
Vol 28 (2) ◽  
Author(s):  
Mira Ariyanti ◽  
Gita Natali ◽  
Cucu Suherman
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Organic Fertilizers ◽  
Compound Fertilizer ◽  
Elaeis Guineensis Jacq ◽  
Four Levels ◽  
Palm Fronds

ABSTRACTThe growth response of oil palm (Elaeis Guineensis Jacq.) seedling toward the application of organic fertilizer from palm fronds and NPK compound fertilizerThe research was aimed to study the influence between organic fertilizers from palm fronds and NPK compound fertilizer to reduce NPK compound fertilizer in main nursery. The experiment was conducted from January to April 2017 at the Experiment Station Ciparanje, Faculty of Agriculture, Universitas Padjadjaran. The experimental design used was Randomized Block Design that arranged in factorial patterns with two factors and three replications. The fisrt factor was dosage of organic fertilizers from palm fronds consisted of three levels of 0 g/polybag, 800 g/polybag, and 1600 g/polybag and the second factor was dosage of NPK compound fertilizer consisted of four levels of 0 g/polybag, 20 g/polybag, 40 g/polybag, and 60 g/polybag. The result of the experiment showed that there was interaction effect between organic fertilizers from palm fronds and NPK compound fertilizer on height of seedling and dry weight of the shoot. The dosage of 1600 g/polybag organic fertilizers from palm fronds with the dosage of 20 g/polybag NPK compound fertilizer showed the best result in dry weight of the shoot.Keywords: Oil palm seedling, Main nursery, Organic fertilizer, Palm frond, NPK compound fertilizerABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh interaksi antara pupuk organik asal pelepah kelapa sawit dengan pupuk majemuk NPK yang baik untuk mengurangi penggunaan pupuk majemuk NPK di pembibitan utama kelapa sawit. Percobaan dilaksanakan dari bulan Januari sampai dengan April 2017 di Kebun Percobaan Ciparanje, Fakultas , Universitas Padjadjaran. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan pola faktorial yang diulang sebanyak tiga kali. Faktor pertama meliputi dosis pupuk organik asal pelepah kelapa sawit terdiri dari tiga taraf yaitu 0 g/polybag, 800 g/polybag, dan 1600 g/polybag dan faktor kedua dosis pupuk majemuk NPK yang terdiri empat taraf yaitu 0 g/polybag, 20 g/polybag, 40 g/polybag, dan 60 g/polybag. Hasil percobaan menunjukkan bahwa terdapat pengaruh interaksi pupuk organik asal pelepah kelapa sawit dengan pupuk majemuk NPK terhadap tinggi tanaman dan bobot kering tajuk. Perlakuan pupuk organik asal pelepah kelapa sawit 1600 g/bibit dengan pupuk majemuk NPK 20 g/bibit menghasilkan bobot kering tajuk bibit kelapa sawit terbaik.Kata Kunci: Bibit kelapa sawit, Pembibitan utama, Pupuk organik, Pelepah kelapa sawit, NPK

Effects of Glyphosate on Growth and the Chlorophyll and Carotenoid Levels of Yellow Nutsedge (Cyperus esculentus)

Weed Science ◽  
1985 ◽  
Vol 33 (6) ◽  
pp. 751-754 ◽  
Author(s):  
M. J. Cañal Villanueva ◽  
B. Fernandez Muñiz ◽  
R. Sanchez Tames
Keyword(s):  
Root Development ◽  
Foliar Spray ◽  
Dry Weight ◽  
Shoot Formation ◽  
Cyperus Esculentus ◽  
Fresh Weight ◽  
Yellow Nutsedge ◽  
Underground System ◽  
Leaf Dry Weight ◽  
Secondary Shoot

Growth and the chlorophyll and carotenoid contents were measured in greenhouse-grown yellow nutsedge (Cyperus esculentusL. ♯ CYPES), following treatment with glyphosate [N-(phosphonomethyl)glycine]. Herbicide was applied as a foliar spray at concentrations of 0.1, 1.0, 5.0, and 10.0 mM. After 2 weeks, growth was inhibited, and chlorosis and leaf apex necrosis were observed. Plant height was reduced, leaf fresh weight was decreased by 40%, and leaf dry weight was slightly affected. Rhizome, tuber, and secondary shoot formation was strongly inhibited, but root development was not affected by glyphosate treatment. With the 10-mM treatment, dry weight of the underground system was reduced by 80%. Chlorophyll and carotenoid levels were decreased by 52 and 54%, respectively, following glyphosate treatment.

scholarly journals Growth Analysis of Wheat Using Machine Vision: Opportunities and Challenges

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6501
Author(s):  
Mohammad Ajlouni ◽  
Audrey Kruse ◽  
Jorge A. Condori-Apfata ◽  
Maria Valderrama Valencia ◽  
Chris Hoagland ◽  
...  
Keyword(s):  
Growth Rate ◽  
Machine Vision ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Growth Analysis ◽  
Growth Parameters ◽  
Dry Weight ◽  
Projected Area ◽  
Relative Growth ◽  
Leaf Dry Weight

Crop growth analysis is used for the assessment of crop yield potential and stress tolerance. Capturing continuous plant growth has been a goal since the early 20th century; however, this requires a large number of replicates and multiple destructive measurements. The use of machine vision techniques holds promise as a fast, reliable, and non-destructive method to analyze crop growth based on surrogates for plant traits and growth parameters. We used machine vision to infer plant size along with destructive measurements at multiple time points to analyze growth parameters of spring wheat genotypes. We measured side-projected area by machine vision and RGB imaging. Three traits, i.e., biomass (BIO), leaf dry weight (LDW), and leaf area (LA), were measured using low-throughput techniques. However, RGB imaging was used to produce side projected area (SPA) as the high throughput trait. Significant effects of time point and genotype on BIO, LDW, LA, and SPA were observed. SPA was a robust predictor of leaf area, leaf dry weight, and biomass. Relative growth rate estimated using SPA was a robust predictor of the relative growth rate measured using biomass and leaf dry weight. Large numbers of entries can be assessed by this method for genetic mapping projects to produce a continuous growth curve with fewer replicates.

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