scholarly journals Effect of Weed Control Methods and Canopy Characteristics on Weed Biomass, Yield and Yield Components of Two Contrasting Cassava Varieties in the Rainforest Zone of Nigeria

2021 ◽  
Keyword(s):  
Weed Control ◽  
Yield Components ◽  
Biomass Yield ◽  
Control Methods ◽  
Weed Biomass ◽  
Yield And Yield Components ◽  
Rainforest Zone ◽  
Cassava Varieties

scholarly journals Influence of Phosphorus Fertilizer Rates on Yield and Yield Components of Faba Bean (Vicia faba L.) Varieties in Lemu Bilbilo District of Arsi Zone, Southeastern Ethiopia

2019 ◽  
pp. 1-11
Author(s):  
Gobena Negasa ◽  
Bobe Bedadi ◽  
Tolera Abera
Keyword(s):  
Plant Height ◽  
Faba Bean ◽  
Yield Components ◽  
Biomass Yield ◽  
Rate Of Return ◽  
Phosphorus Fertilizer ◽  
Higher Plant ◽  
Marginal Rate ◽  
Yield And Yield Components ◽  
Arsi Zone

Faba bean production is a common practice in Lemu Bilbilo areas. However, faba bean productivity is affected and limited by poor soil fertility and lack of alternative technologies such as application of optimum phosphorus fertilizer for different faba bean varieties. In view of this, a field experiment was conducted on farmer’s field during the 2017 main cropping season at Lemu Bilbilo with the objectives to determine the response of faba bean varieties to different rates of P fertilizer and its influence on yield and yield components of faba bean varieties.  The treatments include three faba bean varieties (Tumsa, Gebelcho and Dosha) and five phosphorus levels (0, 10, 20, 30 and 40 kg P ha-1) from Triple Super Phosphate. The experiment was laid out in a randomized complete blocked design with 3 x 5 factorial arrangements with three replications. Significantly (P<0 .05) higher plant height was recorded from Tumsa variety. Total productive tillers per plant, thousand seed weights, and harvest index and biomass yield of faba bean were significantly affected by main effect of varieties. Higher total productive tillers per plant (1.53) were obtained from application of 30 kg P ha-1. Higher plant height (153 cm), biomass yield (14158 kg ha-1) and grain yield (6323 kg ha-1) were obtained from application of 40 kg P ha-1. Application of 10, 20 and 30 kg P ha-1 gave marginal rate of return of 1404694 and 502% for faba bean production, which are well above the minimum acceptable rate of return. Therefore, application of 20 kg ha-1 of P with Tumsa, Gebelcho and Dosha faba bean varieties were proved to be productive and superior both in seed yield as well as economic advantage and recommended for faba bean production in Lemu Bilbilo area. Further study should be conducted in the future both over locations and years in order to give full recommendation for practical application.

Effects of Nitrogen Application Method and Weed Control on Corn Yield and Yield Components

2014 ◽  
Vol 17 (4) ◽  
pp. 497-503 ◽  
Author(s):  
Pariya Sepahvand ◽  
Nurali Sajedi ◽  
Seyed Karim Mousavi ◽  
Mohsen Ghiasvand
Keyword(s):  
Weed Control ◽  
Yield Components ◽  
Corn Yield ◽  
Nitrogen Application ◽  
Application Method ◽  
Yield And Yield Components

The effects of weed density and different weed control applications on yield and yield components of chickpea cultivars

2019 ◽  
Author(s):  
Melih Yilar Omer Sozen ◽  
Ufuk Karadavut
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Yield Components ◽  
Control Method ◽  
Herbicide Application ◽  
Weed Species ◽  
Control Applications ◽  
Weed Density ◽  
Yield And Yield Components ◽  
Plot Design

This study was conducted to determine the effects of weed density and different weed control treatments on chickpea yield and yield components. The experiment was carried out in split plot design with 3 replications in experimental fields of Kirsehir Ahi Evran University during 2016 and 2017 crop seasons. Total nine treatments (no weed control, permanent weed control, one-time hoeing, two-time hoeing, three-time hoeing, herbicide application after emergence, one-time hoeing with herbicide application, two-time hoeing with herbicide application and three-time hoeing with herbicide application) were compared to know the most effective weed control method. Vaccaria pyramidata Medik., Sinapis arvensis L., Acroptilon repens L. weed species were found to be the most intense in the experimental area. All weed control applications had significant effect on chickpea yield and yield components compared to weedy plots. Three-time hoeing with herbicide application increased the yield by 361.55-478.50% compared to weedy plots. Likewise, three-time hoeing application even increased the yield by 348.50-357.09% compared to weedy plots. The results revealed that three-time hoeing with herbicide and three-time hoeing applications stood out in weed management to obtain a good yield in chickpea cultivation at Kirsehir province.

scholarly journals Effects of Nitrogen Fertilizer Rate and Inter-row Spacing on Yield and Yield Components of Teff [Eragrostis teff (Zucc.) Trotter] in Limo District, Southern Ethiopia

2019 ◽  
pp. 1-12 ◽  
Author(s):  
Tamirat Wato
Keyword(s):  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Biomass Yield ◽  
Southern Ethiopia ◽  
Row Spacing ◽  
Fertilizer Rate ◽  
Yield Attributes ◽  
Yield And Yield Components ◽  
Nitrogen Fertilizer Rate ◽  
Fertilizer Rates

Teff [Eragrostis tef (Zucc.) Trotter] is the main staple food of Ethiopia. It ranks the first among cereals in the country in area coverage and second in the production volume; however, its productivity is almost stagnant. The Quncho (Dz-Cr-387) teff variety was sown during the main cropping season of 2017 at the Limo District, Southern Ethiopia. The objective of this research was to study the effect of four nitrogen fertilizer rates (0, 32.5, 65 and 97.5 kg N/ha) and three inter-row spacings (15, 20 and 25 cm), to evaluate the effects on yield and yield components of teff and to identify the economically appropriate nitrogen rates and inter-row spacing that maximize the yield of teff. A factorial experiment was laid out in Randomized Complete Block Design (RCBD) with 12 treatment combinations and three replications. Phenological and yield-related parameters were measured. The main effects of N rate and inter-row spacing showed significant differences (P≤0.05) for all yield and yield components. The effects of N rate by inter-row spacing interaction were not significant for some traits except for the lodging index, biomass yield, grain yield, and straw yield and harvest index. Application of N rate at 97.5 kg/ha and inter-row spacing with 25 cm significantly (P≤0.01) increased grain yield of teff. Moreover, both N fertilizer rates and wider inter-row spacing increased the magnitudes of the important yield attributes including plant height, panicle length, number of effective tillers per plant, thousand seed weight, biomass yield and straw yield significantly (P≤0.01) and also inter-row spacing increased the magnitudes of important yield attributes significance (P≤0.05). From the results of the study, it is possible to conclude that increased application of nitrogen fertilizer rate and row spacing improves yield and yield components of teff. Therefore, the application of 97.5 kg N/ha and inter-row spacing of 25 cm gave maximum yield which can be recommended for the study area.

scholarly journals (416) Weed Management in Organic Sweet Corn

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1071E-1072
Author(s):  
Anthony Silvernail
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Sweet Corn ◽  
Management Strategies ◽  
Organic Production ◽  
Control Methods ◽  
Weed Biomass ◽  
Corn Gluten ◽  
And Control ◽  
Smooth Pigweed

Organic weed control in direct seeded vegetables depends on management strategies that control weed germination or growth which depletes the weed seedbank. In 2004, a randomized complete-block experiment conducted on land transitioning to organic production examined the effects of tillage and control treatments on weed pressure in sweet corn [Zeamays (L.) cv. Silver Queen]. The two tillage treatments consisted of conventional (moldboard and rototill) and spader tillage. Weed control treatments included a weed free control, a spring-tine weeder, rolling cultivator, row flamer, stale seedbed, and corn gluten meal. In August, the weed infestation was primarily goose grass [Eleusineindica (L.) Gaertn.], crab grass [Digitariasanguinalis (L.) Scop.], giant foxtail (Setariafaberi Herrm.), and smooth pigweed [Amaranthushybridus (L.)] species. Dried weed weights indicated that smooth pigweed constituted about 80% of the total weed biomass in all but the control and flamer treatments. Plots managed with the spring-tine weeder or corn gluten had twice the weed biomass of those managed with the rolling cultivator and flamer. The rolling cultivator and control treatments produced equivalent husked corn yields (6.9 t·ha-1); yields were reduced by the other weed control methods. At 5.4 t·ha-1, yields in the flamer treatment were the lowest among all weed control methods. The flamer suppressed both weeds and the crop, which may preclude its utility for sweet corn production. Results demonstrated that the rolling cultivator provided the best weed control without negatively affecting potential yields.

scholarly journals Effect of Mechanical, Cultural and Chemical Weed Control on Yield and Yield Components of Pigeonpeas, Cajanus cajan (L.) Millsp.

1969 ◽  
Vol 58 (4) ◽  
pp. 466-472
Author(s):  
R. Abrams ◽  
F. J. Juliá
Keyword(s):  
Plant Height ◽  
Weed Control ◽  
Yield Components ◽  
Cajanus Cajan ◽  
Seed Weight ◽  
Yield Increase ◽  
Pod Yield ◽  
Yield And Yield Components ◽  
Agricultural Experiment ◽  
Number Of Seeds

Four determinate and four indeterminate types of pigeonpea cultivars and experimental lines were grown at the Isabela Agricultural Experiment Substation during 1971-72 to determine the effects of mechanical, cultural and chemical weed control practices on six characters affecting pigeonpea yield. The chemical, mechanical and hand weed control treatments increased the green pod yield and the number of pods per plant, but had no effect on plant height, number of days to flower, seed weight, and number of seeds per pod. Greatest yield increase was obtained by weed control with chemicals.

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