scholarly journals Effects of Planting Date on Thrips (Thysanoptera: Thripidae) in Cotton

2018 ◽  
Vol 112 (2) ◽  
pp. 699-707 ◽  
Author(s):  
Cody D Kerns ◽  
Jeremy K Greene ◽  
Francis P F Reay-Jones ◽  
William C Bridges
Keyword(s):  
Upland Cotton ◽  
Planting Date ◽  
Growth And Yield ◽  
Yield Potential ◽  
Pest Species ◽  
Alternative Control ◽  
Planting Dates ◽  
Frankliniella Fusca ◽  
Scale Levels ◽  
Tobacco Thrips

Abstract At-plant applications of insecticides are the most common method to manage thrips in upland cotton, Gossypium hirstutum L. Because the primary pest species, tobacco thrips, Frankliniella fusca (Hinds), has developed resistance to commonly used neonicotinoid insecticides used in producing cotton, alternative control options are needed for sustainable thrips management programs. A 3-year study (2015–2017) showed that densities of thrips, feeding injury from thrips, cotton growth, and yield varied among 10 planting dates. Densities of thrips were lowest in seedling cotton planted after mid-May in all years. Thrips injury ratings in all years were highest in cotton planted in April, lowest in cotton planted in June, and below intermediate injury (intermediate corresponded to a 3 on the 0–5 scale) levels in cotton planted after mid-May. Cotton planted during May, rather than in April or June, had the highest yield potential, regardless of variety. Results of the study indicated that altering planting date could potentially be useful in mitigating injury and losses from thrips in upland cotton.

scholarly journals Influence of Planting Date and Insecticide on Injury Caused by Tobacco Thrips and Peanut Yield in North Carolina

2018 ◽  
Vol 45 (2) ◽  
pp. 70-74 ◽  
Author(s):  
D.J. Mahoney ◽  
D.L. Jordan ◽  
R.L. Brandenburg ◽  
B.R. Royals ◽  
M.D. Inman ◽  
...  
Keyword(s):  
North Carolina ◽  
Planting Date ◽  
Planting Dates ◽  
Visible Injury ◽  
Pod Yield ◽  
Frankliniella Fusca ◽  
Pest Incidence ◽  
Tobacco Thrips

ABSTRACT Planting date can affect pest incidence and severity in peanut. Research was conducted from 2013 to 2016 in North Carolina to determine tobacco thrips [Frankliniella fusca (Hinds)] injury and pod yield when peanut was planted in early, mid-, and late-May when phorate was applied in the seed furrow at planting, acephate was applied to emerged peanut 3 wk after planting, or when both insecticides were applied. Differences in visible injury to peanut caused by tobacco thrips feeding were observed across yr, planting dates, and insecticide treatments. Applying either phorate or acephate was often as effective as the combination of both insecticides in preventing injury caused by tobacco thrips although in some instances applying both insecticides was more effective than a single insecticide. Visible injury caused by tobacco thrips was often greater when peanut was planted in early May compared with later plantings. Peanut yield was protected equally from tobacco thrips injury by phorate, acephate, and the combination of both insecticides. Planting date and insecticides affected peanut yield independently suggesting that strategies for managing tobacco thrips will not differ across planting dates in North Carolina. Peanut yield was greater in 2 of 4 yr when planted in mid-May compared with planting in early or late-May.

RESPONSE OF PEAS TO ENVIRONMENT: I. PLANTING DATE AND LOCATION

1966 ◽  
Vol 46 (1) ◽  
pp. 77-85 ◽  
Author(s):  
H. F. Fletcher ◽  
A. R. Maurer ◽  
D. P. Ormrod ◽  
B. Stanfield
Keyword(s):  
Dry Matter ◽  
Planting Date ◽  
Growth Characteristics ◽  
Growth And Yield ◽  
Maximum Temperature ◽  
Dry Matter Yield ◽  
Dark Skin ◽  
Planting Dates ◽  
The Mean ◽  
Maximum Temperatures

The effect of 15 planting dates on various growth characteristics of peas var. Dark Skin Perfection was studied in outdoor pot experiments at Vancouver and Agassiz, B.C. Differences in growth and yield between locations and planting dates were partly accounted for by the mean of maximum temperatures for the growth period.At Agassiz where temperatures exceeded the optimum for most growth characteristics in many of the later plantings, the mean of maximum temperatures was negatively correlated with total dry-matter yield, peas per pod, and pea yield; was positively correlated with branching; and had no effect on pods per plant, double-podded nodes, and tillering. At Vancouver, where temperatures were suboptimum for the early plantings and approached optimum for the later plantings, the mean of maximum temperatures was positively correlated with total dry-matter yield, pods per plant, double-podded nodes, tillering, and pea yield but had no effect on peas per pod or branching. A seasonal mean maximum temperature of 68 to 70°F was considered to be optimum for peas.

scholarly journals Revisiting Planting Date and Cultivar Effects on Soybean Sudden Death Syndrome Development and Yield Loss

Plant Disease ◽  
2016 ◽  
Vol 100 (10) ◽  
pp. 2152-2157 ◽  
Author(s):  
David A. Marburger ◽  
Damon L. Smith ◽  
Shawn P. Conley
Keyword(s):  
Sudden Death ◽  
Yield Loss ◽  
Maximum Yield ◽  
Planting Date ◽  
Sudden Death Syndrome ◽  
Yield Potential ◽  
Yield Losses ◽  
Planting Dates ◽  
Soybean Yield ◽  
The Impact

The impact of today’s optimal planting dates on sudden death syndrome (SDS) (caused by Fusarium virguliforme) development and soybean yield loss are not yet well understood. Field trials established in Hancock, Wisconsin during 2013 and 2014 investigated interactions between planting date and cultivar on SDS development and soybean yield. In 2013, disease index (DX) levels differed among cultivars, but results showed no difference between the 6 May and 24 May planting dates. Significantly lower DX levels were observed for the 17 June date. Greatest yields were found in the 6 May planting date, and yield losses were 720 (17%), 770 (20%), and 400 kg ha−1 (12%) for the 6 May, 24 May, 17 and June planting dates, respectively. In 2014, cultivars again differed for DX, but results showed highest DX levels in the 5 May planting date, with little disease observed in the 22 May and 11 June dates. Yield losses were 400 (12%) and 270 kg ha−1 (9%) for the 5 May and 22 May dates, respectively, but no difference was found in the 11 June date. Despite the most symptom development, these results suggest early May planting coupled with appropriate cultivar selection provides maximum yield potential and profitability in Wisconsin.

Within-Season Changes in the Residual Weed Community and Crop Tolerance to Interference over the Long Planting Season of Sweet Corn

Weed Science ◽  
2009 ◽  
Vol 57 (3) ◽  
pp. 319-325 ◽  
Author(s):  
Martin M. Williams
Keyword(s):  
Sweet Corn ◽  
Growth Period ◽  
Field Studies ◽  
Planting Date ◽  
Growth And Yield ◽  
Planting Dates ◽  
Crop Tolerance ◽  
Weed Interference ◽  
Control Failure ◽  
Planting Season

Sweet corn is planted over a long season to temporally extend the perishable supply of ears for fresh and processing markets. Most growers' fields have weeds persisting to harvest (hereafter called residual weeds), and evidence suggests the crop's ability to endure competitive stress from residual weeds (i.e., crop tolerance) is not constant over the planting season. Field studies were conducted to characterize changes in the residual weed community over the long planting season and determine the extent to which planting date influences crop tolerance to weed interference in growth and yield traits. Total weed density at harvest was similar across five planting dates from mid-April to early-July; however, some changes in composition of species common to the midwestern United States were observed. Production of viable weed seed within the relatively short growth period of individual sweet corn plantings showed weed seedbank additions are influenced by species and planting date. Crop tolerances in growth and yield were variable in the mid-April and both May plantings, and the crop was least affected by weed interference in the mid-June and early-July planting dates. As the planting season progressed from late-May to early-July, sweet corn accounted for a great proportion of the total crop–weed biomass. Based on results from Illinois, a risk management perspective to weeds should recognize the significance of planting date on sweet corn competitive ability. This work suggests risk of yield loss from weed control failure is lower in late-season sweet corn plantings (June and July) than earlier plantings (April and May).

scholarly journals Yield and some agronomic parameters of upland cotton as affected by planting dates

2020 ◽  
Vol 2 (1) ◽  
pp. 37
Author(s):  
Waqas Ahmed Lashari ◽  
Salma Naimatullah ◽  
Hamza Afzal
Keyword(s):  
Plant Height ◽  
Upland Cotton ◽  
Planting Date ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Planting Dates ◽  
Seed Cotton Yield ◽  
Average Maximum ◽  
Boll Weight

A field experiment was conducted at ICI Research Farm, Multan to evaluate the effect of different sowing dates on plant height, number of monopodia, number of sympodia, number of bolls per plant, boll weight, seed cotton yield kg/ha of two upland cotton varieties (ICI-2121 and ICI-2424) developed by ICI Pakistan Limited, Multan against a standard check variety IUB-2013 during 2019, and 2020 years.  These varieties were planted on 1st April, 15th April, 1st May, 15th May, 1st June, and 15th June, at ICI Cotton Research Station, 19-Kasi Vehari Road, Multan.  Results revealed that statistically highly significant differences in planting dates were observed for all the parameters studied except number of monopodial branches and boll weight which depicted non-significant differences. Regarding varieties and interaction between varieties and planting times, similar trend of statistical differences was observed. As regards to planting dates, generally, all the parameters under study showed their maximum performance when crop was planted on 1st May followed by 1st April planting date, whereas, minimum performance of the parameters was recorded when the crop was planted on 15th June followed by 1st June. Regarding varietal performance, on an average, maximum plant height (146cm) was observed in ICI-2121 followed by IUB-2013. Same trend of performance of varieties regarding number of monopodia and sympodia per plant was observed.  Regarding average number of bolls per plant in different varieties, it was observed that ICI-2121 produced maximum (32 bolls) followed by ICI-2424 (31 bolls) and IUB-2013 (28 bolls) irrespective of planting dates. The same trend of varietal performance regarding boll weight was recorded. When seed cotton yield (kg/ha) was evaluated, on an average of varieties, ICI-2121 produced maximum seed cotton yield (1228 kg/ha) followed by ICI-2424 and IUB-2013 which produced 1147 and 1046 kg/ha seed cotton yield respectively irrespective of planting dates. It was concluded that under agro-climatic conditions of Multan, 1st May planting date was evaluated as optimum cotton sowing time. Before or after 1st May, this study does not recommend growing cotton in this particular zone.  Among cotton varieties, ICI-2121 is recommended for sowing under this planting time being producing higher yields.

scholarly journals Effect of Planting Dates and Fertilizer Rates on the Growth and Yield of Sweet Potato (Ipomoea batatas L.) In WUKARI, Taraba State

2021 ◽  
Vol 4 (2) ◽  
pp. 36-43
Author(s):  
Balogun K. ◽  
Nwokah J.T.
Keyword(s):  
Leaf Area ◽  
Sweet Potato ◽  
Interactive Effect ◽  
Planting Date ◽  
Growth And Yield ◽  
Fertilizer Rate ◽  
Planting Dates ◽  
Cropping Season ◽  
Fertilizer Application Rate ◽  
Fertilizer Rates

A field experiment was conducted at the teaching and research farm of the Federal University Wukari, Taraba State, Nigeria to determine, evaluate and compare the effect of planting dates and fertilizer rates on growth and yield of sweet potato, using three planting dates: planting date one (July 4), planting date two (July18) and planting date three (August 1) for both 2017 and 2018 cropping seasons, and four fertilizer rates: F0 (0kg/h), F1 (30kg/h), F2 (60kg/h) and F3 (90kg/h). The treatments were arranged in 3 x 4 split plot factorial design combinations replicated three times. Measurements were taken on the growth and tuber yield at harvest such as the length of primary veins, number of secondary veins, number of leaves, number of tubers and tuber weight. Data collected were analyzed using ANOVA and the significant means separated using Duncan multiple differences at 5% probability level. The result of the experiment indicated that both main effects (planting dates and fertilizer rates) had significant influence on all of the traits measured. Similarly, the interactive effect of planting dates and fertilizer rates significantly affected all of the traits measured, except leaf area which is not significantly influenced by the interactive effect of planting dates and fertilizer rates. The significantly highest weight of tuber per plant was obtained from the planting dates at PD1, PD2 and PD3 (1.09, 1.56 and 1.10 respectively in 2017 cropping season and 1.00, 1.51 and 1.03 respectively for 2018 cropping season). Fertilizer rates enhanced growth and yield performance on the planting dates used. Highest yield values were observed in planting date 2 (PD2). Highest value in all the yield characters measured was observed in planting date 2 (PD2) at fertilizer rates of F3 and F2 (90kg/h and 60kg/h respectively). Based on the findings from this research, planting date 2 (PD2) with 60kg/ha (F2) of fertilizer application rate is recommended. Generally, all traits except the leaf area were significantly affected by the interactive effect of planting date and fertilizer rate, indicating that determining fertilizer rate for each planting date by considering their vegetative growth and yield habit is very important in crop production. Further research should be repeated under rainfed conditions at different locations.

Effects of Planting Date and Mulching on Cowpea in Sierra Leone

1981 ◽  
Vol 17 (1) ◽  
pp. 25-31 ◽  
Author(s):  
C. S. Kamara
Keyword(s):  
Soil Moisture ◽  
Sierra Leone ◽  
Plant Height ◽  
Seed Yield ◽  
Middle Part ◽  
Planting Date ◽  
Growth And Yield ◽  
Planting Dates ◽  
Beneficial Effects ◽  
Pod Number

SUMMARYThe effects of date of planting and soil mulching on cowpea growth and yield were investigated for three years during the middle part of the minor season in Sierra Leone. Mulching at 8 tons/ha conserved more soil moisture than other mulch rates, with greatest difference in the top 15 cm of soil, especially during drier periods. Plant height, pod number and seed yield of cowpea planted in September were significantly greater than from other planting dates whether mulch was applied or not. The beneficial effects of mulching at 8 tons/ha on cowpea growth and yield were more dramatic when the crop received an average weekly rainfall of 100 mm before 50% flowering.

scholarly journals Influence of Date of Planting on the Growth and Yield of Locally Popular Traditional Aromatic Rice Varieties in Boro Season

2013 ◽  
Vol 10 (1) ◽  
pp. 20-28
Author(s):  
MA Mannan ◽  
MSU Bhuiya ◽  
MIM Akhand ◽  
MM Rana
Keyword(s):  
Grain Yield ◽  
Dry Matter ◽  
Growth And Yield ◽  
Yield Potential ◽  
High Yield ◽  
Growth Duration ◽  
Planting Dates ◽  
Rice Varieties ◽  
Photoperiod Sensitive ◽  
High Yield Potential

The experiment was conducted at the Bangladesh Rice Research Institute Farm, Gazipur, in boro season to determine the optimum planting date and to select the varieties having high yield potential. Traditional aromatic photoperiod sensitive fine rice varieties; Kalijira, Kataribhog, Chinigura and Badshabhog were transplanted from 10 December and continued up to 25 January, both in 2000 and 2001 years, at an interval of 15 days. Forty-day old seedlings were transplanted spaced at 20 cm x 20 cm. Results exhibited that plant tallness, number of tillers and dry matter increased with the advancement of planting dates. On the contrary, the number of panicles, grains panicle-1, panicle length, grain yield, straw yield and growth duration decreased with delaying of planting dates. The intermediate short stature plant type of Chinigura exhibited higher number of panicles (300-331 m-2) and comparatively heavier individual grain (12.25-12.31 g), consequently gave higher grain yield (2.79-3.53 t ha-1 ) planted with in December. However, in late planted situation in 10 January Kalijira exhibited higher number of panicles, grains panicle-1, resulted higher grain yield than the rest of the varieties. Thus, cultivation of traditional aromatic fine rice Chinigura and Kalijira have the potentiality to produced higher grain yield when planted in early December in Boro season. DOI: http://dx.doi.org/10.3329/jsf.v10i1.16275 J Sci Foundation, January-June 2012;10(1):20-28

scholarly journals 188 Influence of Planting Date on Strawberry Growth and Development in the Low Desert

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 474E-474
Author(s):  
M.A. Maurer ◽  
K. Umeda
Keyword(s):  
Field Study ◽  
Growth And Development ◽  
Fruit Size ◽  
Planting Date ◽  
The Other ◽  
Growth And Yield ◽  
Planting Dates ◽  
Fruit Number ◽  
Significant Difference ◽  
Strawberry Cultivars

A field study was designed to determine the effect of planting date and cultivar on growth and yield of strawberries in the low desert. The study was conducted at the Univ.of Arizona, Citrus Agricultural Center, near Waddell. Treatments included two strawberry cultivars (Camarosa and Chandler) and three planting dates 20 Aug. and 8 and 22 Oct. 1997. There was no significant difference in fruit yield between cultivars. However, fruit number was significantly greater for `Chandler', and, therefore, fruit size was smaller than `Camarosa.' Yield was significantly higher for strawberries planted 20 Aug., with nearly four times the yield compared to the other planting dates. Results of this study suggest summer planting of strawberries in the low desert to produce economically viable yields.

scholarly journals Effects of Planting Date and Growth Hormone on Growth and Yield of Cauliflower

2017 ◽  
Vol 9 (2) ◽  
pp. 143-150
Author(s):  
MA Rahman ◽  
M Imran ◽  
M Ikrum ◽  
MH Rahman ◽  
MG Rabbani
Keyword(s):  
Growth Hormone ◽  
Plant Height ◽  
Block Design ◽  
Leaf Length ◽  
Planting Date ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Planting Dates ◽  
Number Of Leaves ◽  
Four Levels

An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh, during the period from October 2014 to March 2015 to study the effects of planting date and growth hormone on the growth and yield of cauliflower. The experiment consisted of two factors; Factor A: Three planting dates, such as P1: Planting on 1 November; P2: Planting on 15 November and P3: Planting on 1 December; Factor B: Four levels of Growth hormone, such as H0: No Hormone (control); H1: 10 ppm IAA (Indole-3 Acetic Acid); H2: 70 ppm GA3 (Gibberellic Acid) and H3: 10 ppm IAA + 70 ppm GA3. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. In case of planting date, the highest plant height (63.26 cm), number of leaves per plant (24.13), leaf length (59.26 cm), leaf breadth (19.31 cm) at harvest, curd diameter (22.25 cm), marketable yield per hectare (28.11 t ha-1) were recorded from P2 and the lowest of those parameters were recorded from P3. In case of growth hormone the highest plant height (63.10 cm), number of leaves per plant (23.66), leaf length (59.05 cm), leaf breadth (18.98 cm) at harvest, curd diameter (22.39 cm), marketable yield per hectare (29.88 t ha-1) were recorded from H3 and the lowest of those perameters were recorded from H0. Combination of planting date and growth hormone the highest plant height (65.96 cm), number of leaves per plant (26.42), leaf length (63.64 cm), leaf breadth (20.92 cm) at harvest, curd diameter (25.75 cm), marketable yield per hectare (31.03 t ha-1) were recorded from planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) and the lowest parameters (21.75 t ha-1) were recorded from planting on 1 December and no hormone (P3H0). It is apparent from the above results that the combination of planting on 15 November and 10 ppm IAA with 70 ppm GA3 (P2H3) was more productive from the other combinations.J. Environ. Sci. & Natural Resources, 9(2): 143-150 2016

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