On-farm evaluation of improved maize varieties intercropped with some legumes in the control of Striga in the Northern Guinea savanna of Nigeria

Kuchinda, N. C.; Kureh, I.; Tarfa, Bitrus Dawi; Shinggu, C.p.; Omolehin, R. A.

doi:10.1016/s0261-2194(02)00206-5

Cited by 32 publications

(20 citation statements)

References 2 publications

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“…In other words, for the intercroppings, cultivar BR 205 always performed better than cultivar AG 1041, suggesting that cultivar BR 205 is better adapted to the intercropping conditions. There are differences in how various cultivars behave in intercropping, including for weed control (Kuchinda et al, 2003;Olowe & Adeyemo, 2009), and in some cases, these differences may be related, at least partially, to the prolificacy observed in corn.…”

Section: Resultsmentioning

confidence: 99%

Intercropping Corn With a Combination of Tree Species to Control Weeds

Silva

et al. 2015

Planta daninha

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-The combination of crop residues or crop extracts is often more advantageous in controlling weeds, than the application of each residue or extract singly. This suggests that in intercropping with maize, the combination of tree species can be more advantageous than species isolated in weed control. The objective of this study was to evaluate the effects of intercropping with a combination of leguminous on the weed growth and corn yield. A randomized-block design with split plots (cultivars in plots) and five replicates was established. The cultivars BR 205 and AG 1041 were subject to the following treatments: two weedings (A), intercropping with sabiá (B), gliricidia (C), gliricidia + sabiá (D) and no weeding (E). In the B and C, 30 viable seeds m -2 of the leguminous were sown. In the D, 15 seeds of each species were sown m -2 . The legumes were sown by random casting during corn planting. The sequence of the best treatments in reducing the growth of weeds is A > B = C = D = E. The sequence of the best treatments when are considered the yields of baby corn, green corn and grain is A > B > C > D > E. The cultivars do not differ in regards to the reduction in weed growth. In terms of corn yield cultivar BR 205 is the best.Keywords: Zea mays, Gliricidia sepium, Mimosa caesalpiniifolia, green corn, grain yield. RESUMO -A combinação de resíduos ou extratos das culturas frequentemente é mais vantajosa do que a aplicação isolada dos resíduos ou extratos, no controle das plantas daninhas. Isso sugere que, na consorciação com o milho, a combinação de espécies arbóreas pode ser mais vantajosa do que espécies isoladas no controle de plantas daninhas. O objetivo deste estudo foi avaliar os efeitos da consorciação do milho com uma combinação de leguminosas arbóreas sobre o crescimento das plantas daninhas e o rendimento do milho. Utilizou-se o delineamento de blocos casualizados com parcelas subdivididas (cultivares nas parcelas) e cinco repetições. Os cultivares BR 205 e AG 1041 foram submetidos aos seguintes tratamentos: duas capinas (A), consorciação com a sabiá (B), consorciação com a gliricídia (C), consorciação com a sabiá + gliricídia (D) e sem capinas (E).

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Section: Resultsmentioning

confidence: 99%

Intercropping Corn With a Combination of Tree Species to Control Weeds

Silva

et al. 2015

Planta daninha

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“…After weeds are established, competition for resources becomes the main mechanism of weed suppression in the cover crop (Hollander et al, 2007). The decrease in weed incidence in corn via intercropping is dependent on several factors, including cultivar, weather conditions (Kuchinda et al, 2003), sowing season, intercropped species (Skóra Neto, 1993), and fertilizer applied (Olasantan et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Weed control in corn via intercropping with gliricidia sown by broadcasting

Oliveira¹,

Silva

Albuquerque

et al. 2011

Planta daninha

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There has been interest in reducing the use of herbicides for weed control in order to decrease environmental degradation problems. The objective of this study was to evaluate the effects of gliricidia planting density sown by broadcasting and intercopping on green ear and corn grain yield as well as on weed control. A randomized block design with split-plots and five replicates were adopted. Cultivars AG 1051, BM 2022, and BM 3061, assigned to plots, were submitted to the following treatments: no hoeing, two hoeings (at 20 and 40 days after sowing), and intercropped with gliricidia sown at densities of 10 and 20 seeds m-2. Thirty weed species occurred in the experiment area, with Cucumis anguria as the most frequent ones. Cultivar BM 2022 was the best for the total number of ears (TNE) and number (NMHE) and weight of marketable husked ears. Together with cultivar AG 1051, this cultivar had the highest total weight and marketable unhusked ear weight (MUEW). However, the cultivars did not differ with respect to grain yield (GY). The highest green ear and corn grain yield and weed control percentages were obtained with two hoeings; in MUEW, NMHE and GY, intercropping provided intermediate means in comparison with those obtained in hoed and non-hoed plots, indicating that gliricidia was partially beneficial to corn. Increased gliricidia seeding density heightened the benefits to corn (TNE and MUEW). The lack of hoeing produced the poorest green ear and grain yields.

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“…After the establishment of the weed seedlings, resource competition becomes the cover crop's main weed suppressing mechanism (Hollander et al, 2007). The decrease in weed incidence in corn through intercropping is dependent on several factors, such as corn cultivar, climate conditions (Kuchinda et al, 2003), sowing time, intercropped species (Skóra Neto, 1993) and fertilizer rates (Olasantan et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Weed control via intercropping with gliricidia: II. corn crop

et al. 2009

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-A reduction in herbicide use is one of modern agriculture's main interests and several alternatives are being investigated with this objective, including intercropping. Gliricídia (Gliricidia sepium) mulch has no allelopathic effect on corn or beans but significantly decreased the population of some weed species. The objective of this study was to evaluate green ear and grain yield in corn cultivars as a response to weed control achieved via intercropping with gliricidia. A completely randomized block design with five replicates and split-plots was used. Cultivars AG 1051, AG 2060, BRS 2020, and PL 6880 (assigned to plots) were submitted to the following treatments: no hoeing, hoeing (performed at 20 and 40 days after sowing the corn), and corn intercropped with gliricidia. Gliricidia was grown in a transplanting system to ensure uniform germination and fast establishment in the field. Seeding was made in 200-cell trays with one seed per cell (35 mL volume). The plants emerged two to three days after sowing and were transplanted to a permanent site two to three days after emergence. Corn was sown on the same day gliricidia was transplanted. Sixteen weed species occurred at different frequencies, with uneven distribution in the experimental area. Cultivars AG 1051 and AG 2060 were the best with reference to most characteristics employed to evaluate green corn yield. Cultivar AG 1051 provided the highest grain yield. The highest green ear yield and grain yield values were obtained with hoeing. However, the fact that intercropped plots showed intermediate yield between the values obtained for hoed and non-hoed plots indicates that gliricidia was beneficial to corn, and exerted a certain level of weed control.Keywords: Zea mays, Gliricidia sepium, cultivars, green corn, grain yield.RESUMO -Um dos principais interesses da agricultura moderna é a redução no uso de herbicidas; para isso, diversas alternativas estão sendo investigadas, inclusive a consorciação. A cobertura do solo com ramos de gliricídia (Gliricidia sepium) não tem efeito alelopático sobre o milho ou feijão, mas diminui significativamente a população de algumas espécies de plantas daninhas. O objetivo deste estudo foi avaliar os rendimentos de espigas verdes e de grãos de cultivares de milho, em resposta ao controle de plantas daninhas, por meio da consorciação com gliricídia. Utilizou-se o delineamento de blocos ao acaso com parcelas subdivididas e cinco repetições. Os cultivares 1051, AG 2060, BRS 2020 e PL 6880 (atribuídos às parcelas) foram submetidos aos seguintes tratamentos: sem capina, duas capinas (realizadas aos 20 e 40 dias após a semeadura) e consorciação com gliricídia. Esta planta foi cultivada em um sistema de transplantio, para garantir germinação uniforme e rápido estabelecimento no campo. A semeadura foi feita em bandejas de 200 células, com uma semente por célula (volume de 35 mL). As plantas emergiram dois a três dias após a semeadura e foram transplantadas para o local definitivo dois a três dias após a emergência. O milho...

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On-farm evaluation of improved maize varieties intercropped with some legumes in the control of Striga in the Northern Guinea savanna of Nigeria

Cited by 32 publications

References 2 publications

Intercropping Corn With a Combination of Tree Species to Control Weeds

Intercropping Corn With a Combination of Tree Species to Control Weeds

Weed control in corn via intercropping with gliricidia sown by broadcasting

Weed control via intercropping with gliricidia: II. corn crop

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