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

Influence of planting date and row covers on yields and crop values for bell peppers in Saskatchewan

1992 ◽  
Vol 72 (2) ◽  
pp. 527-533 ◽  
Author(s):  
D. R. Waterer
Keyword(s):  
Fruit Set ◽  
Frost Damage ◽  
Planting Date ◽  
Early Planting ◽  
Row Covers ◽  
Crop Development ◽  
Bell Peppers ◽  
Premium Price ◽  
Black Plastic ◽  
Crop Maturity

In 1989 and 1990, bell peppers transplanted into the field in mid-May, late May or early June were grown with a black plastic soil mulch and no cover (NC) or under tunnels of perforated clear polyethylene (PT) or spunbonded polyester (ST). The ST treatment provided several degrees of frost protection, whereas the PT treatment appeared to increase the crop’s susceptibility to frost damage. Early planting had little effect on total fruit yields but did accelerate the harvest. In both years, the ST accelerated crop maturity and increased total fruit yields relative to the noncovered treatment. At times the PT improved crop development and increased fruit yields, but in many cases it reduced fruit yields relative to the noncovered treatment. By promoting early fruit set and development, early planting under the spunbonded row covers significantly enhanced the value of the crop, as early peppers command a premium price in Saskatchewan. Cumulative crop values for the PT treatments were generally similar to or poorer than those for the noncovered control.Key words: Bell pepper, Capsicum annuum, planting date, row covers, frost

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.

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.

Nitrogen dynamics following slurry injection in maize: crop development

2016 ◽  
Vol 107 (1) ◽  
pp. 19-31 ◽  
Author(s):  
Carl-Philipp Federolf ◽  
Matthias Westerschulte ◽  
Hans-Werner Olfs ◽  
Gabriele Broll ◽  
Dieter Trautz
Keyword(s):  
Nitrogen Dynamics ◽  
Maize Crop ◽  
Crop Development ◽  
Slurry Injection

Effect of long-term nutrient managements on biological and biochemical properties of semi-arid tropical Alfisol during maize crop development stages

2015 ◽  
Vol 48 ◽  
pp. 76-87 ◽  
Author(s):  
S.M. Tamilselvi ◽  
C. Chinnadurai ◽  
K. Ilamurugu ◽  
K. Arulmozhiselvan ◽  
D. Balachandar
Keyword(s):  
Biochemical Properties ◽  
Maize Crop ◽  
Development Stages ◽  
Crop Development ◽  
Semi Arid

scholarly journals Interference Periods of Weeds Infesting Maize Crop

2018 ◽  
Vol 10 (10) ◽  
pp. 197 ◽  
Author(s):  
Leandro Galon ◽  
Maico André Michelon Bagnara ◽  
Ricardo Luis Gabiatti ◽  
Francisco Wilson Reichert Júnior ◽  
Felipe José Menin Basso ◽  
...  
Keyword(s):  
Weed Control ◽  
Soil Seed Bank ◽  
Block Design ◽  
Average Density ◽  
Experimental Unit ◽  
Maize Crop ◽  
Total Period ◽  
Randomized Complete Block Design ◽  
Tillage System ◽  
Maize Plants

When competing with crops, weeds interfere with their growth and consequently reduce grain yield. The purpose of this research was to determine the periods of interference; PIP (pre-interference period), TPWC (total period of weed control), and CPWC (critical period of weed control) of the weeds Alexandergrass (Urochloa plantaginea) and southern crabgrass (Digitaria ciliares) in maize. The experiment was conducted in a randomized complete block design with four replications, in a no-tillage system. The treatments consisted in maintaining maize in the presence and absence of Alexandergrass and southern crabgrass for increasing periods of 0, 7, 14, 21, 28, 35 and 42 days after emergence (DAE). Southern crabgrass and Alexandergrass weeds originated from the soil seed bank with an average density of 215 and 87 plants m-2, respectively. At the end of each period, PIP or TPWC, the weed and crop dry biomass was determined. At 42 DAE, the height and stem diameter of maize plants were evaluated. At harvest 10 maize plants per experimental unit were evaluated for length of ears, number of rows per ear, and number of grains per row. Yield was measured by taking three central rows from each experimental unit. The results indicate that the PIP was 17 DAE, the TPWC was 32 DAE, and the CPWC was 17 to 32 DAE.

scholarly journals Weed competition in maize crop under different timings for postemergence weed control

2000 ◽  
Vol 53 ◽  
pp. 269-272 ◽  
Author(s):  
T.K. James ◽  
A. Rahman ◽  
J. Mellsop
Keyword(s):  
Zea Mays ◽  
Weed Control ◽  
Crop Yields ◽  
Ground Cover ◽  
Crop Growth ◽  
Growth And Yield ◽  
Weed Competition ◽  
Maize Crop ◽  
Maize Yields

The effect of early weed competition was determined for a maize (Zea mays) crop grown in Waikato Maize was established in three different environments viz weedy (no herbicide) grass weeds (preemergence atrazine) and broadleaf weeds (preemergence metolachlor) Surviving weeds were controlled with postemergence nicosulfuron (60 g/ha) after different periods of competition and the plots kept weed free for the remainder of the trial Weeds left completely uncontrolled for 4 weeks after emergence significantly reduced crop yields When a preemergence herbicide was used surviving weeds began to reduce maize yields after about 6 weeks with grasses having greater effect than broadleaf weeds The actual period before the weeds started affecting crop growth and yield appeared to be related to the time taken by the weeds to achieve complete ground cover

Sign in / Sign up

Export Citation Format

Share Document