Weed competitiveness and yield of inter-and intra-specific upland rice (Oryza sativa L.) under different weed control practices at Badeggi, Niger State, Nigeria

Kolo, M. G. M.

doi:10.5897/ajar11.1096

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…The lowest weed dry matter found in two hand weeding was in line with the findings of Bajpai and Singh (1992) who noted lower weed dry matter in two hand weeding. However, the results were in contrast to the findings of Kolo and Umaru (2012) who that recorded a significant lower weed dry matter with the use of orizo plus® than hoe weeding at 45 Days after sowing.…”

Section: Discussioncontrasting

confidence: 99%

“…Also, higher tiller number observed in two hand weeding plots might be that rice was less competed with weeds. This result agrees with the findings of Kolo and Umaru (2012) and Hakim et al(2013) who reported that significant higher rice tiller production were consistent obtained from plots hoe weeded twice or thrice in all the years of their study and in all the growing seasons which attributable to better efficient weed control, which allowed the rice plants to develop well. This result also agrees with the findings of Begum et al, (2008) that recorded lower rice tiller count under weed infested plots.…”

Section: Rice Growth and Yieldsupporting

confidence: 92%

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Determination of Weed Control Efficiency of Pre-Rice Cropping Cassava/Legume Intercrops and Different Weed Management Practices in Low Land Rice at Badeggi Central Nigeria

Umaru,

Gbanguba,

Bashir

et al. 2023

BJMAS

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The experiment was conducted at the lowland experimental field of National Cereals Research Institute, Badeggi. (90 45N, 600 7E, Alt, 70.57 m) in the Southern Guinea Savannah Agro-ecological zone of Nigeria in 2020-2022 cropping seasons The study was to evaluate the effect of pre-rice cropping cassava/legume intercrops and different weed management practices on weed control efficiency, growth and productivity of low land rice. The trial was conducted in two stages. The first (preceding intercropping) The treatments consisted of Mucuna puriens, Cowpea, Soybean, Lablab purpureus and Aeschynomene histrix that were intercropped with cassava (IIT 427 variety), sole cassava and natural fallow were also included as treatments. These were laid out in a Randomized Complete Block Design and replicated three times. Cassava/legume intercropping was carried out in January using residual moisture on raised beds that were prepared manually. Plot size used was 12.5 x 5 m with alley way of 0.5 m. Beds were constructed at 2.5 m long, 0.5 m wide and 0.75 m high. Planting of Cassava was done on the top sides of beds in two rows with the intra-row spacing of 0.5 (ten stands per bed) and planting of legumes were 0.5 m x 9.25 inter and intra-row spacing respectively except for soybean which was planted drilled at 5 cm intra row spacing immediately the beds were constructed. The cassava/legume cropping was harvested in August The second trial was the planting of rice on the plots previously cropped with cassava/legume intercrops. The trial was laid out in split plot design. Cassava/legume intercrop systems were allocated to the main plot, while weed management practices:- (i) Application of 4. 0 (propanil at 1.44 kg a.i. ha-1 plus 2,4 D at 0.80 kg a.i ha-1 ( Orizo plusR, at the rate of 2.24 kg a.i ha-1 at 3 weeks after transplanting (WAT) followed by hand weeding at 6 WAT (ii) two hand weedings at 3 and 6 WAT (iii) one hand weeding at 3 WAT, and (iv) weedy check were put into the sub plots with size of 12.5 x 5 m for main plots while and sub plot size was 3 x 5 m three replications. The results of treatments indicated that rice planted after cassava/Mucuna, cassava/Aeschynomene intercrops under two hand weeding and herbicide followed by one hand weeding produced lower density and dry matter. Weed control efficiency was higher in rice planted after cassava/mucuna intercrop. Weed reduction percentage range from 25-45 %, 30-50 % and 45-65 % in rice grown after cassava/legume intercrop compared to rice after fallow in 2011, 2012 and 2013 respectively. Higher rice plant height, higher number of rice tiller/stand were recorded in rice grown after cassava/Mucuna, cassava/Aeschynomene. Rice panicles per m2 and rice grain yield were increased by 72.9%, 83.6% and 84.1% in 2011, 2012 and 2013, respectively, with two hand weeding when compared with zero weeding. Rice planted after natural fallow under zero weeding produced higher weed density which resulted in poor rice performances. Rice planted after cassava Mucuna consistently controlled weed growth while cassava/cowpea and cassava Aeschynomene performed much better in rice production hence should be adopted as cropping systems for farmers

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Section: Discussioncontrasting

confidence: 99%

Section: Rice Growth and Yieldsupporting

confidence: 92%

Determination of Weed Control Efficiency of Pre-Rice Cropping Cassava/Legume Intercrops and Different Weed Management Practices in Low Land Rice at Badeggi Central Nigeria

Umaru,

Gbanguba,

Bashir

et al. 2023

BJMAS

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Effect of weed species on drought tolerant rice genotypes at Sundarbazar, Lamjung, Nepal

2019

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Weeds compete with rice for water, nutrients, space and light. The effect of weeds on productivity of rice genotypes were studied at research field of Institute of Agriculture and Animal Science, Lamjung Campus, Lamjung, Nepal in 2016. Eight rice genotypes (IR-87684- 18-1-2-3, IR-83388-3-3-140-4, IR-8839-39-1-6-4, IR-87759-7- 1-2-3, IR-88966-22-1-1-1, IR-88839-3-1-2-2, IR-88869-2-2-2-2, and Sukhadhan-3) and two weed management practices (Weeded condition and non weeded condition) were studied in randomized complete block design (RCBD) with three replications. Results showed that weeding operation significantly increased the growth traits and final yield of rice genotypes. Non-significant results among tested genotypes were obtained for grain yield and straw yield however the maximum grain yield (3.68 t ha-1) and straw yield (5.99 t ha-1) were found in IR-88839- 39-1-6-4 which might be due to highest test grain weight (30.64 g), tallest plant height (105.7m) and lower sterility percentage (21.84%). Similarly, the relative grain yield loss due to weed infestation was 41.8%. The highest grain yield (3.99 t ha-1) and straw yield (6.90 t ha-1) was found in weeded plots compared to non-weeded plots (2.321 t ha-1 and 6.43 t ha-1, respectively). Among weed species, Rotala indica was found most dominant (1091 m-2) and proportion 18%) followed by Eriocaulon cinereum (245.83 m-2 and 12%). Interaction effect between variety and weed population showed non-significant results for all growth and yield attributes. The plots having highest number of weed population showed greater loss of rice yield. Thus this study suggests that weeding should be carried out to achieve higher rice production.

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Challenges of weed management in rice for food security in Africa: A review

Daramola

Adigun

Olorunmaiye

2020

Agricultura Tropica Et Subtropica

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Rice is one of the most important crops for food security in Africa. However, there is a large gap between its present demand and supply. Weed competition is basically one of the major constraints in rice systems in Africa, leading to 48–100% yield reduction and sometimes complete crop failure, thereby threatening food security. Weed control methods currently employed to avoid such losses are predominantly hoe-weeding and herbicide application. Hoe weeding is tedious, inefficient, time consuming, associated with high labour demands and often too expensive for the average farmer to afford. Herbicide use on the other hand, does not provide season-long weed control. Moreover, there are not many herbicides that can control different kinds of weeds with one application. Thus, to optimise yield, financial, social and environmental costs and benefits, integrated and ecological weed management approaches are advocated. Future weed research should therefore be focused on delivering information for the implementation of these approaches. This would require improved knowledge of weed biology and ecology, prioritization of problematic weed species, development of competitive rice cultivars and timely weed control. To address the diversity of weed problems in rice systems in Africa, however, research innovations must take full account of farmer’s local conditions using farmers’ participatory approaches. This review suggests that knowledge-based integrated novel approaches must be developed to assist farmers in coping with the challenges of weed management for sustainable rice production.

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Weed competitiveness and yield of inter-and intra-specific upland rice (Oryza sativa L.) under different weed control practices at Badeggi, Niger State, Nigeria

Cited by 9 publications

References 10 publications

Determination of Weed Control Efficiency of Pre-Rice Cropping Cassava/Legume Intercrops and Different Weed Management Practices in Low Land Rice at Badeggi Central Nigeria

Determination of Weed Control Efficiency of Pre-Rice Cropping Cassava/Legume Intercrops and Different Weed Management Practices in Low Land Rice at Badeggi Central Nigeria

Effect of weed species on drought tolerant rice genotypes at Sundarbazar, Lamjung, Nepal

Challenges of weed management in rice for food security in Africa: A review

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