scholarly journals 533 PB 011 SCREENING OF POLYETHYLENE AND ORGANIC MULCHING FILMS FOR USE IN MELON PRODUCTION IN THE LOWER RIO GRANDE VALLEY

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 507f-507
Author(s):  
L.P. Brandenberger ◽  
R.P. Wiedenfeld
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Rio Grande Valley ◽  
Growing Season ◽  
Bare Soil ◽  
Early Spring ◽  
Lower Rio Grande Valley ◽  
Vine Growth ◽  
Randomized Block Design ◽  
Mulching Films

Bare soil, 13 different polyethylene mulching films, and K-Mulch kenaf paper film were compared to one another for use in early spring production of cantaloupe melons. The mulching treatments were applied to the top of raised beds spaced 200 cm apart in late January and seed of the cantaloupe variety Cruiser were planted in early February. Treatments were replicated five times in a complete randomized block design. Plots were irrigated throughout the season utilizing a drip irrigation system. Crop responses to mulches throughout the growing season were determined by measuring vine growth, fruit yield, Fruit quality and earliness. Mulch tensile strength was determined throughout the season, and ease of cleanup and disposal were evaluated after the growing season. Differences were recorded for treatments particularly regarding ease of cleanup.

The effect of grazing duration on forage quality and production of meadow foxtail

2008 ◽  
Vol 88 (1) ◽  
pp. 85-92 ◽  
Author(s):  
Jess J. Wenick ◽  
Tony Svejcar ◽  
Raymond Angell
Keyword(s):  
Block Design ◽  
Forage Quality ◽  
Ground Level ◽  
Growing Season ◽  
Early Spring ◽  
Forage Yield ◽  
Neutral Detergent Fiber ◽  
Grass Species ◽  
Soil Conditions ◽  
Randomized Block Design

For the past 50 yr, meadow foxtail (Alopecurus pratensis L.) has been invading native flood meadows throughout the Harney Basin in southeastern Oregon. The expansion of this grass species has been the result of its broad climatic adaptation and ability to withstand drought while thriving in saturated soil conditions for a large part of the growing season. The growth of meadow foxtail starts as soon as adequate soil moisture exists. Managing this early-maturing hay species can prove to be a challenge because soil saturation and elevated water tables make it difficult to harvest hay when forage quality and yield are maximized. The purpose of this study was to evaluate whether planned grazing would retard maturation and thus prolong forage quality. Treatments included a non-grazed control and grazing durations of 2, 4, 6, and 8 wk. Grazing was initiated in May of 1998 and 1999 on six replications of each treatment arranged in a randomized block design. Within each treatment/replication combination, ten 0.2-m2 plots were clipped to ground level at about 2-wk intervals from May to August. The samples were weighed and dried for standing crop estimation and 4 of the 10 samples were selected at random and analyzed for acid detergent fiber (ADF), neutral detergent fiber (NDF), and crude protein (CP). We found that early spring grazing decreased forage yield significantly (P ≤ 0.05). Grazing tended to slow the seasonal decline in CP. The effects of grazing on the forage fiber components, however, were inconsistent. The relatively small increase in forage quality does not appear to compensate for the large decline in hay yield (a 40% decline in the shortest grazing duration treatment). We recommend that unfertilized meadow foxtail pastures be used for either haying or grazing, but not both in a given growing season. Key words: Grazing, beef cattle, regrowth, forage yield

scholarly journals Agronomic performance of ‘BRS Princesa’ banana under fertigation and mulching

2021 ◽  
Vol 42 (3) ◽  
pp. 979-998
Author(s):  
Elves Almeida Souza ◽  
◽  
Eugênio Ferreira Coelho ◽  
Marcelo Rocha Santos ◽  
Diego Magalhães Melo ◽  
...  
Keyword(s):  
Irrigation System ◽  
Block Design ◽  
Sprinkler Irrigation ◽  
Bare Soil ◽  
Sprinkler System ◽  
Agronomic Performance ◽  
Randomized Block Design ◽  
Potassium Use Efficiency ◽  
Use Efficiency ◽  
Drip Fertigation

Banana is one of the most produced fruit crops in Brazil and has great economic, social and nutritional importance. Factors such as water availability and well-managed fertilization are fundamental to achieving profitable yields. The aim of this study was to examine the agronomic performance and water use efficiency of ‘BRS Princesa’ banana under combinations of irrigation systems, fertilization methods and mulching, during three production cycles. The experiment was laid out in a randomized-block design with four replicates. Treatments consisted of a combination of the localized irrigation system, fertilization strategy and mulching, as follows: Drip irrigation with manual fertilization; Micro-sprinkler irrigation with manual fertilization; Drip fertigation with mulch; Drip fertigation without mulch; Micro-sprinkler fertigation with mulch; and Micro-sprinkler fertigation without mulch. The plants were irrigated every three days, using three 4-L h-1 drippers per plant or a 64-L h-1 micro-sprinkler for every four plants. The following variables were analyzed: number of leaves, plant height, pseudostem circumference, number of hands, hand yield, water and nutrient (nitrogen and potassium) use efficiency and earliness. The micro-sprinkler system provided a greater pseudostem circumference without the presence of mulch. Plants under micro-sprinkler fertigation with mulching grew taller. The banana yield was higher when fertigation was used than with manual fertilization, regardless of the irrigation system. Plants grown in mulched soil were more productive than those grown in bare soil. The use of mulch increased water, nitrogen and potassium use efficiency when compared with cultivation in bare soil. Drip-irrigated plants showed earlier production than those irrigated with micro-sprinklers.

scholarly journals Agronomic performances of Pak Choi grown with different soil cover

2015 ◽  
Vol 33 (2) ◽  
pp. 261-266 ◽  
Author(s):  
Márcia M Echer ◽  
Graciela M Dalastra ◽  
Tiago L Hachmann ◽  
Elcio S Klosowski ◽  
Vandeir F Guimarães
Keyword(s):  
Soil Cover ◽  
Block Design ◽  
Dry Weight ◽  
Bare Soil ◽  
Production Traits ◽  
Pak Choi ◽  
Randomized Block Design ◽  
Black Plastic ◽  
Growing Conditions ◽  
Set Up

An important aspect in the cultivation of vegetables is the quality of the product to be marketed, free from dirt and damage and the practice of mulching could be an option, but there is scarse information. The aim of this study was to evaluate the influence of mulching on the production traits of three cultivars of Pak Choi. The experiment was set up during March to May 2013 using a split plot randomized block design, with four replications. Soil cover treatments (white agrotextile, black agrotextile, black plastic, silver plastic, tifton straw and bare soil) were arranged in the plots, and three cultivars of Pak Choi (Green Pak Choi, White Pak Choi and Chingensai Natsu Shomi) in subplots. Height and diameter of shoots, number of leaves, fresh weight of the head and petiole, base diameter, dry weight of stem, petiole, and leaf were evaluated thirty-five days after transplantation. The total dry weight and leaf area were measured, and then we estimated the yield. There was a significant effect of soil cover and cultivar. In general, the cover with synthetic materials showed higher values on production of Pak Choi. The cultivar White Pak Choi was better adapted to the growing conditions, with an average yield of 57.78 t/ha.

scholarly journals EARLY SPRING APPLICATION OF AMINOETHOXYVINILGLYCINE (AVG) INCREASES FRUIT SET AND YIELD OF ‘ROCHA’ PEARS

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
MATEUS DA SILVEIRA PASA ◽  
BRUNO CARRA ◽  
CARINA PEREIRA DA SILVA ◽  
MARLISE NARA CIOTTA ◽  
ALBERTO FONTANELLA BRIGHENTI ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Block Design ◽  
Quality Attributes ◽  
Fruit Weight ◽  
Early Spring ◽  
Full Bloom ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Return Bloom

ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. Ethylene is associated with abscission of flowers and fruitlets. Then, the application of ethylene synthesis inhibitors, such as AVG, is a potential tool to increase fruit set of pears. The objective of this study was to evaluate the effect of AVG, sprayed at different rates and timings, on fruit set, yield and fruit quality of ‘Rocha’ pear. The study was performed in a commercial orchard located in the municipality of São Joaquim, SC, during the growing seasons of 2014/2015 and 2015/2016. Plant material consisted of ‘Rocha’ pear trees grafted on quince rootstock ‘BA29’. AVG was tested at different rates (60 mg L-1 and 80 mg L-1) and timings [full bloom, one week after full bloom (WAFB), and two WAFB), either alone or in combination. The experiment was arranged in a randomized block design, with at least five single-tree replications. The fruit set, number of fruit per tree, yield, estimated yield, fruit weight, return bloom, and fruit quality attributes were assessed. Fruit set and yield were consistently increased by single applications of AVG at 60 and 80 mg L-1 at both one and two weeks after full bloom, without negatively affecting fruit quality attributes and return bloom.

scholarly journals ‘Pele de sapo’ melon grown under different irrigation depths and bioestimulant rates in the Semiarid region of Brazil

2020 ◽  
Vol 11 ◽  
pp. e3303
Author(s):  
Daíse Souza Reis Lima ◽  
Welson Lima Simões ◽  
José Aliçandro Bezerra da Silva ◽  
Magno do Nascimento Amorim ◽  
Alessandra Monteiro Salviano ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Irrigation System ◽  
Block Design ◽  
Cold Season ◽  
Semiarid Region ◽  
Randomized Block Design ◽  
Relative Water ◽  
Chlorophyll A And B ◽  
Hot Season ◽  
Amino Acid Contents

The objective of this work was to evaluate physiological and biochemical responses of Pele de sapo melon to different irrigation depths (ID) and bioestimulant rates (BTM) to improve its production efficiency. The experiment was conducted in an experimental field in Juazeiro, BA, Brazil. A randomized block design in split split-plot arrangement was used, with four ID (60, 80, 100, and 120% of crop evapotranspiration – ETc) in the plots; five (BTM) (Stimulate® at 0, 0.6, 1.2, 2.4, and 4.8 L ha-1 applied via irrigation system during the flowering stage and after the fruiting stage) in the subplots; and two crop seasons (hot season, 23 to 39 °C; and cold season, 15 to 30 °C) in the sub-subplots. The plants were under daily drip irrigation and spacing of 2.0 × 0.3 m. The variables evaluated were: gas exchange, water use efficiency, chlorophyll a and b, relative water, sugar, and amino acid contents, and fruit yield. The results showed that the ID of 60% ETc resulted in water deficit, denoted by increases in solute concentrations, whereas the ID of 80% and 100% resulted in plants with good performance for biochemical, physiological, and production parameters in both crop seasons. The hot season, ID of 120% ETc, and BTM of 2.4 L ha-1 are recommended for Pele de sapo melon crops, since they result in the best physiological responses and fruit yields.

scholarly journals Organic cultivation of okra with ground cover of perennial herbaceous legumes

2013 ◽  
Vol 31 (3) ◽  
pp. 450-456 ◽  
Author(s):  
Diego Mathias N da Silva ◽  
Fábio Luiz Oliveira ◽  
Paulo Henrique Grazziotti ◽  
Claudenir Fávero ◽  
Mateus Augusto L Quaresma
Keyword(s):  
Dry Matter ◽  
Crop Yields ◽  
Block Design ◽  
Ground Cover ◽  
Bare Soil ◽  
Vegetable Production ◽  
Dry Matter Accumulation ◽  
Herbaceous Legumes ◽  
Organic Cultivation ◽  
Randomized Block Design

The management of green manure with perennial herbaceous legumes has emerged as an interesting practice for vegetable production, improving the cultivation environment and increasing crop yields. In the present study we evaluated the organic okra cultivation in soil covered with perennial herbaceous legumes. The treatments consisted of okra grown in bare soil (control) or covered with tropical kudzo (Pueraria phaseoloides), perennial soybean (Glycine wightii), calopogonium (Calopogonium muconoides), Pinto peanut (Arachis pintoi) and Stylosanthes capitata and Stylosanthes macrocephala. A randomized block design with four replications was used. The weeding of legumes was realized before the okra was sown and this allowed the addition of quantities of dry matter, highlighting the potential of tropical kudzo (3.74 t ha-1), perennial soybean (1.55 t ha-1) and peanut (1.30 t ha-1). Okra cropped in soil covered with tropical kudzo and perennial soybean had the weed lowest dry matter accumulation until 150 days after sowing the okra. At 150 days after sowing the okra, only the areas covered with peanut and calopogonium had higher volumes of water in the soil compared to the control. Throughout the harvest, the okra plants grown in soil covered with perennial soybean and tropical kudzo showed the greatest heights. The maximum okra fruit yield (16.23 t ha-1) was obtained by growing okra in soil covered with perennial soybean.

scholarly journals EFEITO DE NÍVEIS DE COBERTURA DO SOLO SOBRE O MANEJO DA IRRIGAÇÃO DO FEIJOEIRO (Phaseolus vulgaris L.)

Irriga ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 42-52
Author(s):  
Ana Lucia Pereira ◽  
José Aloisio Alves Moreira ◽  
Antonio Evaldo Klar
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Irrigation System ◽  
Block Design ◽  
Irrigation Management ◽  
Phaseolus Vulgaris L ◽  
Randomized Block Design ◽  
Bean Yield ◽  
Red Latosol ◽  
Set Up

EFEITO DE NÍVEIS DE COBERTURA DO SOLO SOBRE O MANEJO DA IRRIGAÇÃO DO FEIJOEIRO (Phaseolus vulgaris L.)   Ana Lúcia PereiraAGENCIARURAL - Campo Experimental de Rio Verde, Rua do Ginásio, 554, Centro,CEP 75.901-210- Rio Verde, GOJosé Aloísio Alves MoreiraEmbrapa Arroz e Feijão, Cx. Postal 179, CEP 74001-970 – Goiânia, GOAntônio Evaldo Klar*Dept o  de  Eng. Rural – FCA-UNESP, Cx. Postal 237, CEP 18603-970 – Botucatu, SP*Pesquisador Científico do CNPq   1  RESUMO  Este trabalho teve por objetivo estudar os efeitos da cobertura do solo sobre o manejo da irrigação do feijoeiro (Phaseolus vulgaris L.). Os tratamentos constaram de diferentes níveis de cobertura morta com palhada de capim braquiária (Brachiaria decumbens), obedecendo delineamento experimental de blocos ao acaso com quatro repetições para os seguintes tratamentos: 0% (0 t/ha),  25% (2,25 t/ha),  50% (4,50 t/ha),  75% (6,75 t/ha)  e  100% (9,0 t/ha). O experimento foi conduzido na Embrapa Arroz e Feijão, no município de Santo Antonio de Goiás, GO, a 16° 28’ 00” de latitude sul, 49° 17’00”  de longitude oeste e 823 m de altitude, num Latossolo Vermelho escuro argiloso, durante o período de junho a setembro de 1997. O manejo da irrigação por microaspersão foi realizado utilizando tensiômetro e a curva característica de água no solo, irrigando toda vez que tensão matricial da água do solo atingia 30 kPa. A análise dos resultados mostrou  diminuição do número de irrigações e aumento do turno de rega nos tratamentos onde a cobertura  atingiu mais de 50% da superfície do solo. Os valores médios da tensão da água do solo nos tratamentos com 0,25 e 50% apresentaram maior variação (turno de rega menor). A cobertura do solo propiciou maior eficiência do uso da água.A produção de grãos foi avaliada não havendo diferença de produtividade entre os tratamentos de cobertura morta.  UNITERMOS: Cobertura do solo, Irrigação, Phaseolus vulgaris L.   PEREIRA, A. L.; MOREIRA , J. A. A.; KLAR, A. E.   THE EFFECTS OF MULCH ON  IRRIGATION MANAGEMENT OF COMMON  BEAN (Phaseolus vulgaris L.)   2 ABSTRACT  The aim of this study was to evaluate the effects  of mulch on irrigation management of common bean (Phaseolus vulgaris L.). The randomized block design with four replications was applied on  five mulch rates: 0% (0 t/ha), 25% (2,25 t/ha), 50% (4,5 t/ha), 75% (6,75 t/ha) and 100% (9,0 t/ha).The study was set up at the Experimental Station of Embrapa – CNAF, Santo Antonio de Goias, 16°2’ south, 49° 17’ west and 820 m altitude from June to September, 1997 in a Dark – Red Latosol soil. A microsprinkle irrigation system was used.The results showed: - bean yield was not affected by mulch treatments; - the irrigation number was decreased when  mulch application was higher than 50%.   KEYWORDS: mulch, irrigation, Phaseolus vulgaris L.

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 BIOLOGICAL NEMATICIDES ASSOCIATED WITH POULTRY LITTER IN THE CONTROL OF NEMATODES IN SOYBEAN AND SECOND CORN CROP

2021 ◽  
Vol 34 (3) ◽  
pp. 580-589
Author(s):  
TAYRLEN EDUARDO AMORIM ROSA ◽  
JEAN CRAMENAK DE SOUZA ◽  
WELLINGTON JOSÉ PEREIRA ◽  
JANAINA ALVES DE ALMEIDA MOREIRA ◽  
FERNANDO GODINHO DE ARAÚJO
Keyword(s):  
Heterodera Glycines ◽  
Block Design ◽  
Poultry Litter ◽  
Growing Season ◽  
Fresh Weight ◽  
Management Measures ◽  
Randomized Block Design ◽  
Pratylenchus Brachyurus ◽  
Infested Field ◽  
Soybean Plants

ABSTRACT Alternative management measures have been used to reduce nematode population levels in affected areas. In this perspective, the objective was to evaluate the efficiency of nematicides based on fungus and bacterium, associated with poultry litter applied via ground in the management of Pratylenchus brachyurus and Heterodera glycines in soybean and corn crops in succession. The experiment was conducted in the 2018/19 growing season in the municipality of Ipameri– GO (-17°34’55.58”S−48°12’02.35”O) in naturally infested field, arranged in a randomized block design, with 10 treatments and 4 replicates, being: T1- Witness/ control, T2- Poultry litter, T3- P. lilacinum + T. harzianum, T4- B. subtilis + B. licheniformis, T5- P. chlamydosporia, T6- Abamectina, T7- P. lilacinum + T. harzianum + Poultry litter, T8- B. subtilis + B. licheniformis + Poultry litter, T9- P. chlamydosporia + Poultry litter, T10- Abamectina + Poultry litter. The poultry litter was added in the soil 10 days before planting. The plots were composed of 6 lines of 6 m, with a spacing of 0.5 m. In the soybean crop at 45 and 90 days after sowing (DAS), the fresh weight of the roots (MFR), nematological variables and productivity were evaluated. In corn, only nematological variables were evaluated at 60 DAS. The treatments using P. lilacinum + T. harzianum and B. subtillis + B. licheniformes increased the MFR and reduced the number of P. brachyurus and H. glycines at the root. P. chlamydosporia associated with poultry litter increased in productivity in soybean plants.

Sign in / Sign up

Export Citation Format

Share Document