Purple Nutsedge (Cyperus rotundus L.) Interference and Drought Effect on Proline Accumulation in Soybean (Glycine max L.) Leaves

2017 ◽  
Vol 23 (7) ◽  
pp. 6487-6489
Author(s):  
Sri Darmanti ◽  
Santosa ◽  
Laurentius Hartanto Nugroho ◽  
Kumala Dewi
Keyword(s):  
Glycine Max ◽  
Proline Accumulation ◽  
Cyperus Rotundus ◽  
Drought Effect ◽  
Purple Nutsedge ◽  
Glycine Max L

scholarly journals Allelopathic Effect of Cyperus rotundus L. on Seed Germination and Initial Growth of Glycine max L. cv. Grobogan

2015 ◽  
Vol 17 (2) ◽  
pp. 61 ◽  
Author(s):  
Sri Darmanti ◽  
Santosa Santosa ◽  
Kumala Dewi ◽  
L Hartanto Nugroho
Keyword(s):  
Glycine Max ◽  
Seed Germination ◽  
Petri Dish ◽  
Dry Weight ◽  
Cyperus Rotundus ◽  
Tolerance Index ◽  
Allelopathic Effect ◽  
Initial Growth ◽  
Purple Nutsedge ◽  
Glycine Max L

Allelopathy is a phenomenon of direct or indirect, beneficial or adverse effects of a plant on its own or another plant through the release of chemicals into the environment. This experiment was carried out to determine the allelopathic effect of Cyperus rotundus L. (purple nutsedge) tuber aqueous extract on seed germination and initial growth of Glycine max L. (soybean) seedlings. The experiment was performed in completely randomized (CRD) design with five replications, using a range of concentrations of aqueous tuber extracts of nutsedge, i.e.: 0%, 5%, 10%, 15%, 20% and 25%. The petri dish experiment showed that with increase of the tuber extract concentration, a significant increase was noted in mean germination time (MGT), significant decreases in germination index (GI), growth tolerance index (GTI), wet weight seedling, dry weight seedling and  length of soybean seedling.  

Reactions of Several Crops to Dichlobenil

Weed Science ◽  
1971 ◽  
Vol 19 (6) ◽  
pp. 655-658 ◽  
Author(s):  
W. S. Hardcastle ◽  
R. E. Wilkinson
Keyword(s):  
Zea Mays ◽  
Glycine Max ◽  
Brassica Rapa ◽  
Clay Content ◽  
Cyperus Rotundus ◽  
Sorghum Halepense ◽  
Clay Loam ◽  
Purple Nutsedge ◽  
Crop Tolerance ◽  
Yellow Nutsedge

Tolerance of corn (Zea maysL. ‘B’), cotton (Gossypium hirsutumL. ‘coker 413’), soybean (Glycine maxMerr. ‘Hardee’), turnip (Brassica rapaL. ‘Tendergreen’), sorghum (Sorghum bicolor(L.) Moench. ‘Georgia 615’), purple nutsedge (Cyperus rotundusL.), yellow nutsedge (C. esculentusL.), and johnsongrass (Sorghum halepense(L.) Pers.) to 2,6-dichlorobenzonitrile (dichlobenil) at 0, 0.14, 0.28, 0.56, 1.12, and 2.24 kg/ha in four Georgia soils was determined. Equivalent rates of dichlobenil generally were more toxic in Davidson clay loam which had the highest clay content. Crop tolerance was corn > sorghum > cotton > turnip. Purple and yellow nutsedge tolerance to dichlobenil was intermediate to that of the crops tested. Johnsongrass response was equivalent to that shown by sorghum.

scholarly journals Effects of exogenous α-oxoglutarate on proline accumulation, ammonium assimilation and photosynthesis of soybean seedling (Glycine max(L.) Merr.) exposed to cold stress

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhijia Gai ◽  
Lei Liu ◽  
Jingtao Zhang ◽  
Jingqi Liu ◽  
Lijun Cai
Keyword(s):  
Glycine Max ◽  
Adverse Effects ◽  
Cold Stress ◽  
Ammonium Assimilation ◽  
Proline Accumulation ◽  
Proline Content ◽  
Optimum Concentration ◽  
Soybean Seedling ◽  
Glycine Max L

Abstract The objective of this study was to examine the effects of exogenous α-oxoglutarate on leaf proline accumulation, ammonium assimilation and photosynthesis of soybean when exposed to cold stress. To achieve this objective, exogenous α-oxoglutarate was sprayed to potted seedlings of Henong60 and Heinong48 at 0, 2.5, 5.0 and 7.5 mmol/L, identified as A0, A2.5, A5.0, and A7.5, respectively. Leaf samples were collected after cold stress of 24 h (S1 stage) and 48 h (S2 stage). The results indicated that exogenous α-oxoglutarate significantly enhanced leaf GS activity, NADP-GDH activity, glutamate content, proline content and photosynthesis of soybean seedling exposed to cold stress at S1 and S2 stages. The ammonium content in leaf was significantly decreased by exogenous α-oxoglutarate at both stages. 5.0 mmol/L of exogenous α-oxoglutarate is the optimum concentration in this study. Leaf proline content for Henong60 and Heinong48 at A5.0 was 37.53% and 17.96% higher than that at A0 at S1 stage, respectively. Proline content for Henong60 and Heinong48 increased by 28.82% and 12.41% at A5.0 and A0, respectively, at S2 stage. Those results suggested that exogenous α-oxoglutarate could alleviate the adverse effects of cold stress.

scholarly journals EFEKTIVITAS BERBAGAI FORMULASI RIZOBAKTERI SEBAGAI BIOHERBISIDA PADA PERTANAMAN KEDELAI (Glycine max (L.) Merril)

2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Afiati Bahrawi ◽  
La Karimuna ◽  
Muhidin Muhidin
Keyword(s):  
Glycine Max ◽  
Block Design ◽  
Analysis Data ◽  
Cyperus Rotundus ◽  
Bacillus Sp ◽  
Laboratory Unit ◽  
Randomized Complete Block Design ◽  
Glycine Max L ◽  
Cleome Rutidosperma ◽  
Range Test

ABSTRACKThe purpose of this research was to study the effectiveness of various formulations rhizobacteria as bioherbicide in soybean. This research was conducted at the Agrotechnology Laboratory Unit Agronomy and Field Laboratory, Faculty of Agriculture Halu Oleo university, Kendari from March to June 2016.This research was arranged on randomized complete block design (CBD), which consisted of seven treatments that are P0 (Control), P1 (Bacillus sp. A05 + water), P2 (Bacillus sp. A05 + talc), P3 (Bacillus sp. A05 + husk charcoal powder), P4 (P. aeruginosa A08 + water), P5 (P. aeruginosa A08 + talc), P6 (P. aeruginosa A08 + husk charcoal powder). The treatments was repeated three times so that there were 21 experimental units. Weed vegetation were analyzed using quadratic metode, quadrant size used was 1x1 m2, observations were made one time when the soybean was 21 HST. The soybean data were analyzed using of analysis variance followed by Duncan's Multiple Range Test if the treatments was significant. The results showed that treatment of formulations rhizobacteria P6 namely P. aeruginosa A08 in the husk charcoal powder carrier formulation was the best among all 5 other formulations, that could be seen in the weeds vegetation analysis data results, showed that P. aeruginosa A08 in the husk charcoal powder carrier formulation could suppress the growth of Cleome rutidosperma D.C and Cyperus rotundus L. which was the dominant weeds in soybean. Husk charcoal powder was able to improve the suitability of rhizobacteria P. aeruginosa A08 as bioherbisida in the field so that they could worked more effectively as bioherbisida than other treatments. Keywords: Bioherbicides, formulation rhizobacteria, Glycine max (L.) Merrill

scholarly journals Estudo de competição inter e intraespecífica envolvendo Glycine max (L. ) Merril e Cyperus rotundus (L.), em condições de casa de vegetação

1983 ◽  
Vol 6 (2) ◽  
pp. 129-137 ◽  
Author(s):  
R.A. Pitelli ◽  
J.C. Durigan ◽  
N.J. Benedetti
Keyword(s):  
Glycine Max ◽  
Cyperus Rotundus ◽  
Glycine Max L

O presente experimento teve por objetivo estudar os efeitos da competição inter e intraespecífica envolvendo Glycine max (L.) Merril e Cyperus rotundus L. sobre as características das plantas e acúmulos de N, P, K, Ca e Mg pelas espécies envolvidas. Para tanto, estipulou-se um tratamento em que se desenvolveram três plantas de Glycine max e outro em que se desenvolveram 3 tubérculos de Cyperus rotundus por vaso. Para estudar os efeitos da competição intraespecífica, em dois outros tratamentos dobraram-se as populações por vaso. No estudo da competição interespecífica permitiu-se o desenvolvimento de três plantas de Glycine max e de três tubérculos de Cyperus rotundus num mesmo vaso. De uma maneira geral, pôde-se observar que principalmente devido às diferenças no hábito de crescimento das duas espécies, a expressão da competição inter e intraespecífica, em cada uma delas, assume aspectos distintos. No caso de Cyperus rotundus, o efeito do dobro da densidade pôde ser compensado, em parte, pela maior produção de manifestações epígeas e de tubérculos, aliados ao maior desenvolvimento dos tubérculos na menor densidade de plantio. No caso da competição interespecífica, os resultados sugerem um efeito decisivo do sombreamento de Leguminosae sobre o comportamento da Cyperaceae. Os padrões de efeitos da competição pelos nutrientes foi determinado também pelas diferenças no recrutamento dos elementos do solo pelas espécies envolvidas.

scholarly journals Efeito do metribuzin no controle das plantas daninhas e na produção de grãos em Glycine max (L ) merrill

1991 ◽  
Vol 9 (1-2) ◽  
pp. 45-52 ◽  
Author(s):  
J. P. Silva Neto ◽  
N. F. Lopes ◽  
J. F. Silva ◽  
M. A. Oliva ◽  
L. R. Ferreira
Keyword(s):  
Glycine Max ◽  
Cynodon Dactylon ◽  
Cyperus Rotundus ◽  
Glycine Max L

No ano agrícola 1985/ 86, em Viçosa-MG, foi instalado um ensaio de campo em solo Pdzólico Vermelho-Amarelo argiloso e com 2,9% de matéria orgânica, objetivando estudar o efeito das doses de metribuzin (0,0; 0,35; 0,70 e 1,05 kg i.a.ha-1) no controle de plantas daninhas e na produtividade da soja (Geycine max (L.) Merri ll, cv. 'Uber aba'). A maioria das monocotiledôneas que ocorreram na area experimental foi represent ada por Cyperus rotundus L., Brachiaria plantaginea (Link) Hitch. e Cynodon dactylon (L.) Pers., tendo-se verificado somente redução em Brachiaria planta taginea em virtude do aumento das doses de metribuzin, ocorrendo o mesmo com relação às dicotiledôneas que se fizerem presentes no experimento, com exceção de Oxalis Oxyptera Prop., que não foi controlada nas doses utilizadas. A densidade total médias das invasoras, menos Cyperus rotundus , Oxalis oxyptera e Cynodon dactylon, foi de 141; 124; 62 e 59 plantas . m-2, respectivamente, para as doses de 0,0; 0,35 ; 0,70 e 1,05 kg i.a.ha-1 de metribuzin. A dose de 0,35 kg i.a. de metribuzin.ha-1 foi suficiente para promover a redução da matéria seca da parte aérea das plantas daninhas com a mesma eficiência de controle da dose de 1,05 kg i.a .ha-1 Entretanto, a densidade total médil das invasoras foi reduzida sig nificativamente nas doses de 0,70 e 1,05 kg i.a. de metribuzin.ha-l. O efeito do metribuzin na soja foi evidenciado somente na dose de 1,05 kg i.a.ha-1, com injúria foliar (clorose) leve ocorrida até 25 dias, aproximadamente, apôs a emergência das plântulas. Após esse período, houve total recuperação de todas as plantas de soja submetidas a essa dose. A produção de grão se o índice de colheita não foram influencia dos significativamente pelas doses de metribuzin.

scholarly journals Pengaruh Kumulatif Cekaman Biotik dan Abiotik Terhadap Penurunan Pertumbuhan Tajuk Tanaman Kedelai [Glycine max (L.) Merr.] cv. Grobogan

2016 ◽  
Vol 1 (1) ◽  
pp. 48
Author(s):  
Sri Darmanti
Keyword(s):  
Glycine Max ◽  
Cyperus Rotundus ◽  
Glycine Max L

Pada kondisi alami, tumbuhan sering terpapar pada kondisi beberapa cekaman biotik dan abiotik secara bersamaan. Tumbuhan merespon cekaman ganda dengan cara yang berbeda dibanding responya terhadap cekaman tunggal.  Pengaruh cekaman ganda dapat ditunjukkan sebagai persen (%) pengaruh kumulatif, yaitu perbandingan antara persen pengaruh cekaman ganda dengan persen pengaruh cekaman tunggal yang menyebabkan perubahan paling besar terhadap parameter yang diukur. Penelitian bertujuan mengkaji pengaruh kumulatif cekaman ganda biotik berupa interferensi gulma teki (Cyperus rotundus L.) dan abiotik berupa kekeringan terhadap penurunan pertumbuhan tajuk kedelai [Glycine max (L.) Merr. ] cv. Grobogan. Penelitian menggunakan metode ekperimental rancangan acak lengkap dua faktor (3 x 3), yaitu tingkat interferensi teki (kontrol, tiga teki, enam teki) dan tingkat cekaman kekeringan (kontrol, ringan, berat). Hasil  penelitian menunjukkan pengaruh kumulatif cekaman ganda biotik dan abiotik dalam menurunkan pertumbuhan tajuk tanaman kedelai cv. Grobogan bersifat cross synergism yaitu salah satu dari kedua cekaman menyebabkan meningkatnya kepekaan tanaman kedelai cv. Grobogan terhadap cekaman yang lainnya.     Kata kunci : cross synergism, pengaruh, kumulatif, teki, kedelai

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