scholarly journals Effect of Sprayer Nozzle Selection on Improving Weed Control by Maister Power Herbicide and Maize Crop Productivity

2017 ◽  
Vol 8 (4) ◽  
pp. 521-527
Author(s):  
O. Mobarak ◽  
S. Eid
Keyword(s):  
Weed Control ◽  
Crop Productivity ◽  
Maize Crop ◽  
Sprayer Nozzle

scholarly journals Periods of weed interference in maize crops cultivated in the first and second cycles

2016 ◽  
Vol 37 (5) ◽  
pp. 2867
Author(s):  
Caio Ferraz de Campos ◽  
Arthur Arrobas Martins Barroso ◽  
Antonio Carlos da Silva Junior ◽  
Clebson Gomes Gonçalves ◽  
Dagoberto Martins
Keyword(s):  
Weed Control ◽  
Crop Productivity ◽  
Critical Periods ◽  
Agricultural Ecosystem ◽  
Maize Crop ◽  
Maize Production ◽  
Weed Interference ◽  
Grain Productivity ◽  
Culture Cycle ◽  
Critical Timing

The interference of weeds in maize production may be reflected in grain yield losses that vary as a function of the density, stage and degree of aggressiveness of the species present. In the agricultural ecosystem, crops and weeds demand light, water, nutrients and space, which are frequently not available in sufficient quantities, leading to competition. The aim of this work was to determine the period of interference of weed plants, in particular of naked crabgrass (Digitaria nuda) on maize crop in the first and second harvest. The treatments were defined as increasing periods of coexistence and increasing control of weed community (7, 14, 21, 28, 35, 42, 49, and 56 days), two more controls, a control including one with weed control until the end of the culture cycle and another with coexistence until the harvest. For each period, were evaluated the stand of maize plants, length of ear, number of grains per row, number of rows per ear, cob, 100-grain weight, and grain productivity. The data obtained were subjected to analysis of variance using the F test, with average treatments compared using Tukey’s test at 5% probability. Crop productivity was evaluated by means of regressions, the critical periods of interference were estimated. The critical timing of weed removal was 25 days for both harvests. The critical weed free period was 54 and 27 days for the first and second harvest respectively. For the conditions of the first and second harvest, the critical period of weed control was of 29 and 2 days respectively.

Topramezone: A selective post-emergence herbicide in chickpea for higher weed control efficiency and crop productivity

2021 ◽  
Vol 150 ◽  
pp. 105814
Author(s):  
C.P. Nath ◽  
Narendra Kumar ◽  
K.K. Hazra ◽  
C.S. Praharaj ◽  
S.S. Singh ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Productivity ◽  
Control Efficiency ◽  
Weed Control Efficiency

scholarly journals APPLICATION HEIGHT IN HERBICIDES EFFICIENCY IN BEAN CROPS

2015 ◽  
Vol 33 (3) ◽  
pp. 607-614
Author(s):  
G. A. M. PEREIRA ◽  
L. H. BARCELLOS JR ◽  
D. V. SILVA ◽  
R. R. BRAGA ◽  
M. M. TEIXEIRA ◽  
...  
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Inverse Relationship ◽  
Target Surface ◽  
Yield Losses ◽  
Herbicide Application ◽  
Spray Solution ◽  
Bean Plants ◽  
Coefficients Of Variation ◽  
Sprayer Nozzle

ABSTRACTInadequate herbicide application can result in failures in weed control and/or poisoning of the crops, resulting in yield losses. In this research were assessed the effects of the sprayer nozzle boom height in the distribution of the spray solution for weed control, influencing intoxication of beans and crop yield. Experiments were conducted in laboratory and field conditions. In laboratory, the performance of flat spray tip TT 11002 was assessed at heights 0.20, 0.30, 0.40 and 0.50 meters with respect to the target surface. In the field the same heights were assessed in applications of herbicides fomesafen, fluazifop-P-butyl and fomesafen + fluazifop-P-butyl. There was an inverse relationship between the height of the spray boom and the coefficients of variation of the patterns. The mixture better efficiency in a tank of fluazifop-P-butyl + fomesafen was obtained with the height of 0.50 m from the target. This treatment resulted in better weed control, lower poisoning of the bean plants and better crop yield rates.

scholarly journals Effective Weed Control in Maize

2011 ◽  
Vol 68 (1) ◽  
Author(s):  
Ileana BOGDAN ◽  
Teodor RUSU ◽  
Ştefania GADEA ◽  
Ilarie IVAN ◽  
Paula MORARU ◽  
...  
Keyword(s):  
Weed Control ◽  
Control Method ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Control Methods ◽  
Maize Crop ◽  
Optimal Network ◽  
Weed Seeds ◽  
Weeds Control

The paper present the results of 26 variants of weed control in maize (grouped in 6 distinctly strategies) which were tested in 2010 agricultural year in a one factorial stationary experiment. Three of the strategies were based on post emergence weed control methods, two of them – on pre-emergent weed control method and one of them – based on both methods. The main goal was establishing an optimal network weeds control in maize crop. Maize weed in Luduş area increased, due to weed seeds reserve in the arable stratum and weather conditions, which allow weeds to grow alternatively, and because of the development of problem-causing species during the maize vegetation period, when no tilling is performed.

Maize MAIZE YIELD AS AFFECTED BY METHODS OF TILLAGE AND WEED MANAGEMEMNT

2021 ◽  
Vol 27 (1) ◽  
pp. 51-66
Author(s):  
Haseeb Ahmad
Keyword(s):  
Grain Yield ◽  
Weed Control ◽  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Dry Weight ◽  
Maize Yield ◽  
Control Methods ◽  
Fresh Weight ◽  
Maize Crop

An experiment entitled: Maize yield as affected by methods of tillage and weed control methods was conducted at Agronomy Research Farms, The University of Agriculture Peshawar during summer 2016. The study was conducted in randomized complete block design (RCBD) with split plot arrangement having four replications. Tillage practices 1) Chisel plough + rotavator 2) Mouldboard plough + rotavator 3) Cultivator + rotavator and 4) Rotavator were assigned to main plots. Weed management practices included 1) Control, 2) Hoeing 15 days after sowing 3) Hoeing 15 and 30 days after sowing 4) Hoeing 15, 30 and 45 days after sowing, and 4) Herbicide (nicosulfuron) were kept into the subplots. The results revealed that chisel plough + rotavator has significantly reduced weeds m-2 (122, 101 and 125 weeds m-2), weeds fresh weight (19.73 g m-2, 116.35 g m-2 and 252.56 g m-2) and weeds dry weight (6.83 g m-2, 38.69 g m-2 and 80.61 g m-2) at 30, 45 and 60 days after sowing, respectively. The operation of chisel plough + rotavator has produced tallest plants (221.22 cm) with maximum grain rows ear-1 (16), grain yield (3586 kg ha-1) and shelling percentage (78.14%). Among weed control methods, hoeing 15, 30 and 45 days after sowing revealed maximum plant height (226.41 cm), grain rows ear-1 (16), grain yield (3604 kg ha-1) and shelling percentage (79.11%). All weed control methods have showed significant reduction in weeds m-2, weeds fresh weight and weeds dry weight. Interaction was also found significant for weeds m-2 at 60 DAS and grain yield of maize. Lowest weeds (56 weeds m-2) at 60 DAS and highest grain yield (4569 kg ha-1) was recorded when seedbed was prepared with chisel plough + rotavator with 3 hoeings (hoeing 15, 30 and 45 days after sowing). It is concluded that treatment of chisel plough + rotavator and hoeing 15, 30 and 45 days after sowing has significantly produced maximum grain yield of maize crop.

Ultra-Early Planting Effects on Maize Crop Development, Yield, and Weed Control

2007 ◽  
Vol 8 (2) ◽  
pp. 57-72
Author(s):  
Demosthenis Chachalis ◽  
Petros C. Lolas ◽  
George Zanakis
Keyword(s):  
Weed Control ◽  
Maize Crop ◽  
Early Planting ◽  
Crop Development

Weed management options in transgenic stacked and non transgenic maize (Zea mays) hybrids-A review

2017 ◽  
Vol 38 (04) ◽  
Author(s):  
K. Sivagamy ◽  
C. Chinnusamy ◽  
P. Parasuraman
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Crop Growth ◽  
Control Programme ◽  
Growth And Yield ◽  
Growth Stages ◽  
Management Options ◽  
Maize Crop ◽  
Weed Growth ◽  
Vigorous Growth

Weeds are generally hardy species having fast growth, deep root system and capable of competing very efficiently with cultivated crops for the available resources and adversely affect the crop growth and yield. Weed management systems that rely on post emergence control assume that crops can tolerate competition for certain periods of time without suffering yield losses. Initial slow growth particularly at early crop growth stages and wider plant spacing of maize crop encourages fast and vigorous growth of weeds. It is of paramount importance that, competition from weeds must be minimized to achieve optimum yield. Among the different weed control methods, chemical method bears many advantages in suppressing weed growth and to get healthy and vigorous crop stand. Non-selective herbicide molecules with a variety of mode of action were discovered, developed and marketed for successful weed control programme.

scholarly journals Effect of Integrated Use of Organic Manures and Chemical Fertilizers under Soil Test Crop Response Approach on Soil Properties and Yield of Maize (Zea mays L.)

2021 ◽  
pp. 40-47
Author(s):  
Varsha Pandey ◽  
Ajaya Srivastava
Keyword(s):  
Soil Properties ◽  
Green Manure ◽  
Microbial Biomass Carbon ◽  
Crop Productivity ◽  
Research Centre ◽  
Chemical Fertilizers ◽  
Maize Crop ◽  
Available N ◽  
Organic Manures ◽  
Urease Enzyme

A field experiment was conducted at Crop Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, during kharif 2019 to study the effect of integrated use of organic manures and chemical fertilizers under STCR approach on physico-chemical, biological properties of soil and yield of maize crop in a Mollisol. The experiment comprised of 9 treatments replicated thrice.  The treatment details were Control (no fertilizers), RDF, STCR (inorganic mode), STCR INM mode, 75% STCR dose of N (inorganic mode) + Green manure, 50% STCR dose of N (inorganic mode) + Green Manure, 75% RDN +  Green Manure, 50% RDN + Green Manure and FYM + Green Manure + Intercropping with urd. The lowest yield and soil properties were observed under control. The highest water holding capacity (63.20%), available N (183.98 kg ha-1), available P (28.94 kg ha-1), microbial biomass carbon (335.35 µg/g soil) and urease enzyme activity (30.06 µg urea/g soil/h) was observed under T4 (STCR INM mode). The highest organic carbon (0.99%), available K (200.85 kg ha-1) and dehydrogenase activity (223.60 µgTPF/gsoil/day) was observed under T5 (75% STCR dose of N (inorganic mode) + Green manure). The highest maize yield was observed under T4 (STCR INM mode). Therefore, the present investigation clearly reveals the significance of balanced and efficient utilization of resources under STCR approach on soil and crop productivity of maize crop.

scholarly journals Unlocking maize crop productivity through improved management practices in northern Tanzania

2020 ◽  
Vol 20 (07) ◽  
pp. 17095-17112
Author(s):  
Job Kihara ◽  
◽  
F Kizito ◽  
M Jumbo ◽  
M Kinyua ◽  
...  
Keyword(s):  
Food Insecurity ◽  
Management Practices ◽  
Crop Productivity ◽  
Yield Response ◽  
Maize Crop ◽  
Marginal Rate ◽  
Available N ◽  
Maize Hybrids ◽  
Northern Tanzania ◽  
P Application

Addressing the problem of low crop productivity and food insecurity can be accelerated through community-centered implementation of good agricultural management practices. This study was conducted in Babati,Northern Tanzania. The objective of the study was to determine nitrogen (N)and phosphorus (P)application requirements for maize,and demonstrate economically viable best bet yield-improving management technologies under three ecozones namely; ‘low elevation low rainfall’, ‘medium elevation high rainfall’ and ‘medium elevation low rainfall’ ecozone. Two sets of trials were conducted: N (0, 45, 90, 120 and 150 kg ha-1) and P (0, 15, 30, 40 kg ha-1) response trials in 16 representative fields in three seasons of 2013/14, 2014/205 and 2015/16 and; demonstrations trials in 8 farmer-selected fields in 2015/16 season. Combined N and P application increased maize yields by 32 to 62% over single nutrient applications.In the medium elevation low rainfall ecozone, 60-86%yield response to nitrogen was observed.Largely, modest applications of 50 kg N ha-1and 20 kg P ha-1resultedin profitable (marginal rate of return (MRR) of 2.4 to 3.0) yield increases of upto 214% over the farmers practice (unfertilized), varying with variety and ecozone. The source of P (DAP or Minjingu Mazao) had little influence on maize productivity except under low altitude low rainfall where Minjingu Mazao is unprofitable. Farmer rankings and agronomic indices showed new maize hybrids namely Meru H513, Meru H515 and SC627 as priority across the ecozones; Mams H913 is suitable mainly in medium elevation low rainfall ecozone. The conclusion is that use of new maize hybrids and appropriate rates of locally available N and P nutrient sources can bridge existing yield gaps and reduce food insecurity. Technologies from community-driven research in development are easily adopted by a large number of farmers and could result in a quick,yet lasting productivity gains.

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