scholarly journals Weed Management in Rice under Sprinkler and Flood Irrigation Systems

2018 ◽  
Vol 36 ◽  
Author(s):  
D.B. HELGUEIRA ◽  
T. D’AVILA ROSA ◽  
L. GALON ◽  
D.S. MOURA ◽  
A.T. MARTINI ◽  
...  
Keyword(s):  
Experimental Design ◽  
Weed Management ◽  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Flood Irrigation ◽  
Irrigation Systems ◽  
Factor B ◽  
Randomized Block Design ◽  
Herbicide Treatments

ABSTRACT: This study aimed to assess the efficiency and selectivity of herbicides in rice submitted to sprinkler and flood irrigation systems. The experimental design was a randomized block design arranged in a 2 × 9 factorial scheme. Factor A consisted of irrigation systems (sprinkler and flood) and Factor B consisted of herbicide treatments (T1 - control; T2 - imazethapyr + imazapic, 75 + 25 g a.i. ha-1; T3 - imazethapyr + imazapic, 150 + 50 g a.i. ha-1; T4 - imazapic + imazapyr, 73.5 + 24.5 g a.i. ha-1; T5 - imazapic + imazapyr, 147 + 49 g a.i. ha-1; T6 - imazethapyr, 106 g a.i. ha-1; T7 - imazethapyr, 212 g a.i. ha-1; T8 - sequential application of imazethapyr + imazapic, 75 + 25 g a.i. ha-1; and T9 - sequential application of imazapic + imazapyr, 73.5 + 24.5 g a.i. ha-1). The application of imazethapyr and formulated mixtures of imazethapyr + imazapic and imazapyr + imazapic provided a control higher than 97% in flood and sprinkler irrigation systems. Herbicide selectivity is not altered in the sprinkler irrigation system when compared to the flood irrigation system.

scholarly journals WEED INTERFERENCE IN CARROT YIELD IN TWO LOCALIZED IRRIGATION SYSTEMS

2021 ◽  
Vol 34 (1) ◽  
pp. 119-131
Author(s):  
LAÍS TEREZA RÊGO TORQUATO REGINALDO ◽  
HAMURÁBI ANIZIO LINS ◽  
MATHEUS DE FREITAS SOUSA ◽  
TALIANE MARIA DA SILVA TEÓFILO ◽  
VANDER MENDONÇA ◽  
...  
Keyword(s):  
Critical Period ◽  
Yield Loss ◽  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Irrigation Systems ◽  
Weed Interference ◽  
Randomized Block Design ◽  
Relative Production ◽  
Crop Cycle

ABSTRACT Weed interference is one of the factors that reduces carrot yield considerably. The aim of this study was to determine the periods of weed interference in carrots cultivated under two localized irrigation systems. The experiment used a completely randomized block design, with three replications, using the split plot scheme. The plots consisted of two irrigation systems (drip and micro sprinkler) and the subplots corresponded to the duration of coexistence of the crop with weeds, comprising periods of control (weed -free) or coexistence (with weeds) (0, 10, 20, 30, 40, 50, and 120 days after emergence (DAE) of the crop). Considering a yield loss of 2.5%, 5%, and 10% in marketable carrots, the beginning and end of the critical period of weed control (CPWC) was determined by adjusting a sigmoid model to the relative production data. The presence of the weed community throughout the crop cycle resulted in yield losses of up to 98%. The CPWP varied for the irrigation systems used. Carrot cultivation with and without competition, under the micro sprinkler irrigation system showed a higher yield than with the drip system. Considering a yield loss of 5%, the CPWC was 23 DAE and 7 DAE in the drip irrigation and micro sprinkler irrigation systems, respectively.

scholarly journals Sunflower cultivation under different irrigation systems and planting spacings in the sub-middle region of São Francisco Valley

2020 ◽  
Vol 41 (6supl2) ◽  
pp. 2899-2910
Author(s):  
Welson Lima Simões ◽  
◽  
Jucicléia Soares da Silva ◽  
Anderson Ramos de Oliveira ◽  
Amadeu Regitano Neto ◽  
...  
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Growth And Yield ◽  
Middle Region ◽  
Irrigation Systems ◽  
Head Diameter ◽  
Randomized Block Design ◽  
Number Of Leaves

The growth and yield of sunflower plants can be influenced by the plant population arrangement and the type of irrigation system adopted to meet the water requirements of the crop. This study examines the influence of different irrigation systems and spacings between planting rows on the development of sunflower cultivars for the sub-middle region of São Francisco Valley. The experiment was laid out in a randomized block design with a split-plot arrangement in which the plots consisted of three irrigation systems (drip, micro-sprinkler and sprinkler); sub-plots were represented by three spacings between planting rows (0.65, 0.55 and 0.45 m); and sub-sub-plots corresponded to two sunflower cultivars (Hélio 251 and Hélio 360). The following variables were analyzed: plant height; number of leaves; stem diameter; number of heads; head diameter; dry biomass of stems, leaves and heads; and achene yield. The different irrigation systems and row spacings markedly influenced the growth of the sunflower cultivars. The highest yield of cultivar Hélio 251 was obtained with the drip irrigation system and 0.55 m spacing. Cultivar Hélio 360 achieved the highest yields when irrigated by the micro-sprinkler system at 0.55 and 0.45 m spacing. In the sprinkler irrigation system, cultivar Hélio 360 obtained the highest yield at 0.45 m spacing.

scholarly journals AGRONOMIC CHARACTERISTICS OF THE PACOVAN ORGANIC BANANA IN IRRIGATION SYSTEMS IN THE AÇU-RN VALLEY

2018 ◽  
Vol 31 (2) ◽  
pp. 370-378
Author(s):  
JÚLIO JUSTINO DE ARAÚJO ◽  
VANDER MENDONÇA ◽  
MARIA FRANCISCA SOARES PEREIRA ◽  
MATHEUS DE FREITAS SOUZA
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Tropical Region ◽  
Irrigation Systems ◽  
Banana Production ◽  
Banana Tree ◽  
The One ◽  
Small Producers ◽  
Alternative Irrigation

ABSTRACT The banana tree is grown in an extensive tropical region throughout the world, usually by small producers. The present work had the objective of evaluating irrigation systems in banana production in the Açu-RN Valley, aiming at alternatives so that they can be recommended to farmers in the Açu Valley region. The experiment was carried out in the area of the School Farm of the IFRN Campus Ipanguaçu, located in the municipality of Ipanguaçu-RN. The experiment was carried out in a randomized complete block design with subdivided plots and eight replications. The irrigation systems were: irrigation, drip irrigation, micro sprinkler and alternative irrigation. The plots were composed of eight useful plants with spacing in double rows 4 x 2 x 2 m. Eight characteristics related to production were evaluated: bunch mass (MC); number of leaves (NP); number of fruits per cluster (NFC); mean mass of the leaves (MMP); diameter of the fruit of the second seed (DF2P); length of the fruit of the second seed (CF2P); mean fruit mass (MMF); productivity (Prod). The data were submitted to analysis of variance and the means were compared by the Tukey test at 5% of probability. In the first cycle of production the sprinkler irrigation system was the one that presented better results the productivity of the Pacovan banana tree; in the 3rd cycle the alternative irrigation system was the one that showed better results the productivity of the banana tree; where the electrical conductivity correlated with the sodium adsorption ratio in the irrigation water, contributed to a moderate limitation of use.

Performance of pea under different irrigation systems

2016 ◽  
Author(s):  
K.V. Ramana Rao ◽  
Suchi Gangwar ◽  
Arpna Bajpai ◽  
Ravish Keshri ◽  
Lavesh Chourasia ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Sprinkler System ◽  
Crop Water ◽  
Flood Irrigation ◽  
Irrigation Systems ◽  
Weekly Basis ◽  
Agricultural Engineering ◽  
Micro Irrigation

The field experiment was conducted at Precision Farming Development Centre, Central Institute of Agricultural Engineering, Bhopal on influence of different irrigation methods in three continuous years (2010-2013) on the performance pea crop. Conventional flood irrigation, micro sprinkler and drip irrigation systems were adopted as three treatments and with seven replications in each treatment in the study. Pea (Arkel variety) crop was sown at a spacing of 45 X 10 cm. During the period of experiment flood irrigation were applied on weekly basis and micro irrigation and drip irrigation systems were operated every third day to meet the crop water requirement. The total quantity of water applied in flood, drip irrigation and micro sprinkler systems were 387.5, 244.7 and 273.5 mm respectively. Maximum crop yield was observed under micro sprinkler system (98.60 q/ha) followed by drip and conventional irrigation system. Saving of water was found better under drip irrigation over micro sprinkler irrigation system.

scholarly journals Fortification of Mung bean (Vigna radiata) and Ear mushroom (Auricularia auricula-judae) in dried sago noodles

2019 ◽  
Vol 1 (2) ◽  
pp. 34-40
Author(s):  
Donowati Tjokrokusumo ◽  
Fiqi Cahyani Octaviani ◽  
Raskita Saragih
Keyword(s):  
Experimental Design ◽  
Vigna Radiata ◽  
Mung Bean ◽  
Block Design ◽  
Taste Preference ◽  
Factor B ◽  
Average Value ◽  
Auricularia Auricula ◽  
Bean Flour ◽  
Randomized Block Design

This study aimed to obtain a formula dried sago noodles enriched with mung beans and ear mushrooms to produce noodles with high protein and fiber content and favored by the panelist. The experimental design used in this study was a Randomized Block Design (RCBD) with two factorial (3×3). Factor A is the percentage of mung bean flour which consists of three levels: a1 = 12%, a2 = 15%, a3 = 18%. Factor B is the percentage of ear mushroom flour consisting of three levels: b1 = 1%, b2 = 2% and b3 = 3%, with 2 replications. The organoleptic testing was done by 30 untrained panelists. The results showed that the most preferred panelists are dried noodles sago enriched with 12% mung bean flour and 1% ear mushroom flour. The resulting product has an overall value of 14 consisting of an average value of color 3.73 (ordinary-like), aroma preference value 3.3 (ordinary-like), texture preference value 3.47 (ordinary-like), and taste preference value 3.50 (ordinary-like).

scholarly journals Budidaya Bawang Merah (Allium ascalonicum L.) pada Lahan Kering Menggunakan Irigasi Sprinkler pada berbagai Volume dan Frekuensi

2016 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Rahmi Fauziah ◽  
Anas D. Susila ◽  
Eko Sulistyono
Keyword(s):  
Vegetative Growth ◽  
Irrigation System ◽  
Block Design ◽  
Total Yield ◽  
Sprinkler Irrigation ◽  
Dry Land ◽  
Randomized Block Design ◽  
Pressurized Irrigation ◽  
Four Levels ◽  
Irrigation Volume

<p>ABSTRACT</p><p><br />Shallot is one of important commodity besides chili and potatoes. Shallot is cultivated on dry land. The dry land used in Indonesia is still relatively small, while the potential of this area is considered large for the development of agriculture. Pressurized irrigation system has the advantage of efficient use of water making it suitable to be applied on dry land. The study consisted of two experiments, the effect of irrigation volume and frequency of irrigation influence on the growth of shallot. The research was conducted at the Experimental Station Teaching Farm and Postharvest Laboratory Department of Agronomy and Horticulture, Bogor Agricultural University from October 2014 to April 2015. The research consisted of two experiments by using a Randomized Block Design with four replications. The treatment in the first experiment was percentage of the volume of irrigation water consisting of five levels (S100% ETc, S75% ETc, S50% ETc, S25% ETc (with sprinkler) and 100% ETc conventional (without sprinkler). The treatment in the second experiment was frequency of irrigation consisting of four levels (two times a day, once a day, once in two days one and once in three days). Results of the first experiment showed the plants could grow<br />and produced up to S25% ETc or 81.17% water available for evapotranspiration, but the best treatment was S100% ETc volume irrigation, based on yields. Watering with sprinkler irrigation provided better effect than manual watering which was usually done by farmers. The second eperiment showed that the best watering frequency for vegetative growth was once a day while for total yield was twice a day.</p><p>Key words: dryland, irrigation, shallot, sprinkler, total yield, vegetative growth,</p><p>ABSTRAK</p><p><br />Bawang merah salah satu komoditas unggulan nasional selain cabai dan kentang. Budidaya bawang merah umumnya dilakukan pada lahan kering dan membutuhkan irigasi. Sistem irigasi bertekanan memiliki keunggulan dalam efisiensi penggunaan air sehingga cocok untuk diterapkan<br />pada lahan kering. Penelitian terdiri atas dua percobaan, yaitu pengaruh volume irigasi dan pengaruh frekuensi irigasi terhadap pertumbuhan dan produksi bawang merah. Penelitian ini dilaksanakan di Kebun Percobaan Teaching Farm dan Laboratorium Pascapanen Departemen Agronomi dan<br />Hortikultura, Institut Pertanian Bogor dari Oktober 2014 sampai April 2015. Penelitian terdiri atas dua percobaan menggunakan Rancangan Acak Kelompok dengan empat ulangan. Perlakuan pada percobaan 1 adalah persentase volume air irigasi terdiri atas 5 taraf (S100% ETc, S75% ETc, S50% ETc, S25% ETc (dengan sprinkler) dan konvensional 100% ETc (tanpa sprinkler), sedangkan perlakuan pada percobaan 2 adalah frekuensi irigasi terdiri atas 4 taraf yaitu dua kali sehari, satu kali sehari, dua hari sekali, tiga hari sekali. Hasil percobaan menunjukkan tanaman masih dapat tumbuh dan berproduksi sampai volume irigasi S25% ETc atau 81.17% air tesedia sudah dievapotranspirasikan oleh tanaman, tetapi perlakuan terbaik ialah volume irigasi S100% ETc berdasarkan bobot panen total. Penyiraman dengan irigasi sprinkler memberikan efek yang sama bahkan lebih baik dibanding penyiraman secara manual yang biasa dilakukan oleh petani. Frekuensi penyiraman terbaik untuk pertumbuhan vegetatif adalah satu kali sehari sementara untuk bobot panen total adalah dua kali sehari.</p><p>Kata kunci: bawang merah, hasil total, irigasi, lahan kering, pertumbuhan vegetatif, sprinkler</p>

THE EFFECTIVENESS OF FLUROKSIPIR MHE 480 g/l HERBICIDES AS CONTROLLING Chromolaena odorata (L.) WEEDS ON MATURE OIL PALM

2019 ◽  
Vol 27 (3) ◽  
pp. 141-148
Author(s):  
Umiyati Umiyati ◽  
Denny Denny K
Keyword(s):  
Experimental Design ◽  
Oil Palm ◽  
Confidence Level ◽  
Block Design ◽  
Chromolaena Odorata ◽  
Treatment Control ◽  
Weed Growth ◽  
Randomized Block Design ◽  
Herbicide Treatments ◽  
Manual Weeding

Experiments have been carried out with the objective of knowing Fluroxypyr MHE 480 g/l  against weeds Chromolaena odorata L on mature oil palm. Experiments conducted in the oil palm Sagala Herang District of Subang Regency in West Java. The experimental design used was a randomized block design with four replications and seven treatments were then tested further by Duncan test at 95% confidence level. Herbicide treatments were tested , namely herbicides Fluroxypyr MHE 480 g/l  dose of 0.75 ml/l -  , of 3.0  ml/l, manual weeding and no treatment ( control ).  The research results show that the herbicide Fluroxypyr MHE 480 g/l with doses 1.5 ml / l effective and efficient pressing Chromolaena odorata weed growth of up to 12 weeks after application or three months after application. At all doses Herbicide Fluroxypyr MHE 480 g/l up to 3 MSA observations do not show symptoms of poisoning in mature oil palm

scholarly journals Residual activity of herbicides used in soybean agriculture on grain sorghum crop succession

2010 ◽  
Vol 28 (spe) ◽  
pp. 1087-1095 ◽  
Author(s):  
H.A. Dan ◽  
L.G.M. Dan ◽  
A.L.L. Barroso ◽  
S.O. Procópio ◽  
R.S. Oliveira JR. ◽  
...  
Keyword(s):  
Weed Management ◽  
Block Design ◽  
Residual Activity ◽  
High Sensitivity ◽  
Grain Sorghum ◽  
Herbicide Application ◽  
Randomized Block Design ◽  
Herbicide Treatments ◽  
Chlorimuron Ethyl ◽  
Crop Succession

The sorghum is a kind of prominence before the cultures used in succession in the Brazil. However, little information concerning the effects of residual activity of herbicides on the crop in this region are known. The objective of this study was to evaluate the residual activity of herbicides used in weed management in soybeans as well as check their effects on grain sorghum grown in succession. For the field experiment, we used a randomized block design with four replications. Eight herbicide treatments were evaluated: imazaquin (0,161 kg ha-1), diclosulam (0,035 kg ha-1), sulfentrazone (0,600 kg ha-1) and flumioxazin (0,05 kg ha-1) in applications made before emergency and chlorimuron-ethyl (0,015 kg ha-1), imazethapyr (0,060 kg ha-1), imazethapyr (0,100 kg ha-1) and fomesafen (0,250 kg ha-1) applied post-emergence soybean (V3 stadium, 18 DAE), and a control without herbicide application. The grain sorghum (cv. AG-1040) was sown after the harvest of soybeans. The residual activity of these herbicides was determined by bioassay, using the same sorghum cultivars evaluated in the field during the period from 0 to 200days after application the treatments. The sorghum crop showed high sensitivity to residual activity of the herbicide sulfentrazone, diclosulam and imazethapyr dose of 0,100 kg ha-1, even when grown after soybean harvest. Furthermore, the residual activity of sulfentrazone exceeded the range of assessment of bioassay, and more than 200 days.

scholarly journals Weed Interference in Semi-Erect and Semi-Prostate Cowpea Cultivars

2019 ◽  
Vol 37 ◽  
Author(s):  
T.S. CASTRO ◽  
P.R.R. ROCHA ◽  
G.F. BARRETO ◽  
S.S. MAIA ◽  
J.A.A. ALBUQUERQUE ◽  
...  
Keyword(s):  
Experimental Design ◽  
Weed Management ◽  
Critical Period ◽  
Block Design ◽  
Control Period ◽  
Management Control ◽  
Cowpea Cultivars ◽  
Weed Interference ◽  
Maximum Productivity ◽  
Randomized Block Design

ABSTRACT: This study aimed to determine weed interference periods in semi-erect and semi-prostrate cowpea cultivars. Two simultaneous experiments were conducted with the cowpea cultivars BRS Guariba (semi-erect) and BRS Aracê (semi-prostrate). The experimental design was a randomized block design with four replications in a 7 × 2 factorial scheme, seven periods × two weed management (control and coexistence). Control and coexistence periods consisted of 0, 0-8, 0-16, 0-24, 0-32, 0-45, and 0-60 days after emergence (DAE) for the semi-erect cultivar and 0, 0-8, 0-16, 0-24, 0-32, 0-45, and 0-64 DAE for the semi-prostrate cultivar. Competition throughout the cycle reduced productivity by up to 39.81% for BRS Guariba and 37.27% for BRS Aracê. The cultivars BRS Guariba and BRS Aracê presented critical period of interference prevention of 9 to 41 DAE and 15 to 32 DAE, respectively. The semi-prostrate cultivar BRS Aracê was more competitive with weeds, requiring a shorter control period to express maximum productivity.

scholarly journals VELOCIDADE DE REBAIXAMENTO DO NÍVEL FREÁTICO NA QUALIDADE DO CALDO DA CANA-DE-AÇÚCAR

Irriga ◽  
2015 ◽  
Vol 20 (3) ◽  
pp. 458-472
Author(s):  
ANTONIO CLARETTE SANTIAGO TAVARES ◽  
SERGIO NASCIMENTO DUARTE ◽  
Nildo Da Silva Dias ◽  
JARBAS HONORIO MIRANDA ◽  
KELLY TAGIANNE SANTOS SOUZA ◽  
...  
Keyword(s):  
Water Table ◽  
Developmental Stages ◽  
Irrigation System ◽  
Block Design ◽  
Juice Quality ◽  
Flood Irrigation ◽  
Saccharum Spp ◽  
Theoretical Yield ◽  
Randomized Block Design

VELOCIDADE DE REBAIXAMENTO DO NÍVEL FREÁTICO NA QUALIDADE DO CALDO DA CANA-DE-AÇÚCAR  ANTONIO CLARETTE SANTIAGO TAVARES1; SERGIO NASCIMENTO DUARTE2; JARBAS HONÓRIO MIRANDA2; NILDO DA SILVA DIAS3; KELLY TAGIANNE SANTOS DE SOUZA4 E FRANCISCO DIRCEU DUARTE ARRAES5 [1]Agrônomo, Prof. Doutor, Instituto Federal do Norte de Minas Gerais, IFNMG, Campus Almenara. [email protected]ônomo, Prof. Doutor, Escola Superior de Agricultura “Luiz de Queiroz”, ESALQ/USP. [email protected], [email protected]ônomo, Prof. Doutor, Universidade Federal Rural do Semi-Árido, UFERSA/DCAT, Mossoró, RN. [email protected]ônoma, Prof. Doutora, Universidade Federal de Roraima, UFRR. [email protected], Programa de Pós-Graduação em Engenharia de Biossistemas, ESALQ/USP. [email protected]  1 RESUMO Este trabalho objetivou avaliar o efeito de velocidades de rebaixamento do nível freático (NF) na qualidade do caldo da cana-de-açúcar (Saccharum spp, cultivar RB 867515), aplicadas em três estádios de desenvolvimento de um ciclo de cana planta. Desenvolveu-se um experimento, utilizando 64 lisímetros, em delineamento de blocos casualizados, arranjado em um fatorial de (3 x 5 + 1) com 4 repetições. Aplicou-se a inundação em três estádios de desenvolvimento (67, 210 e 300 Dias Após o Plantio - DAP), com cinco velocidades de rebaixamento do NF (30 cm em 3, 6, 9, 12 e 15 dias) e um tratamento testemunha (apenas irrigação, sem inundação). Os parâmetros de avaliação dos tratamentos foram Brix, Pol, açúcar teórico recuperável (ATR), açúcar redutor da cana (ARC), rendimento de açúcar teórico (RAT) e porcentagem de fibra. Os resultados mostram que os parâmetros ARC, RAT e percentagem de fibra não foram influenciados pelo período de inundação, tão pouco pela velocidade de rebaixamento do NF. Entretanto menores valores de Brix, Pol e ATR foram observados quando a inundação ocorreu aos 305 DAP, sob uma velocidade de rebaixamento do nível freático de 0,3 m em 12 dias. Palavras-chave: drenagem, inundação, Saccharum spp.  TAVARES, A.C.S.; DUARTE, S.N.; MIRANDA, J.H.; DIAS, N. da S.; SOUZA, K.T.S.; ARRAES, F.D.D. DOWNGRADE RATE OF WATER TABLE ON JUICE QUALITY OF SUGARCANE  2 ABSTRACT This study aimed to evaluate the effect of downgrade rate of  water table on juice quality of sugarcane (Saccharum spp, cv. RB 867515), applied in three developmental stages of a sugarcane cropping cycle.  The experiment was conducted using 64 lysimeters in a 3 x 5 x 1 factorial randomized block design   with 4 replicates.   Flood irrigation system was applied in  3   stages of development (67, 210 and  300 days after planting  - DAP) using  5 downgrade rates of water (30 cm in  3, 6, 9, 12 and 15 days) and   a control (no flood irrigation system).  Brix, Pol, theoretical recoverable sugar (TRS), reducing sugar in sugarcane juice (RS), theoretical yield  (TY) and percentage of fiber were the parameters for treatment evaluation.   The results showed that flood irrigation and downgrade rate of water table had no influence on   RS, TY and percentage of fiber parameters.  However, lower values of Brix, Pol and TRS were found when flooding occurred at 305 DAP under 0.3 m downgrade rate of  water table in 12 days. Keywords: Drainage, flooding, Saccharum spp.

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