Problems in control of <i>Rottboellia exaltata</i> L.f. in maize in Bukidnon Province, Mindanao, Philippines

Fisher, H. H.; López, F.; Margate, L.; Elliot, P. C.; Burrill, L. C.

doi:10.1111/j.1365-3180.1985.tb00623.x

Cited by 11 publications

(7 citation statements)

References 2 publications

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“…These approaches offered the highest level of weed control efficacy compared with the other practices. However, in agreement with Fisher et al (1985), cost of treatments compared with herbicides limits their application to small-scale operations only.…”

Section: Resultsmentioning

confidence: 80%

“…Further, no harvestable yields of mungbean were obtainable as the crop came into maturity at a time when it was difficult to get into the maize field. Fisher et al (1985) found that mungbean as a companion crop was promising as a practical control measure if conditions allowed vigorous crop growth. It is suggested that mungbean used as a living mulch is only suited to the situation where small-scale farmers grow maize at wide spacings and low plant densities.…”

Section: Resultsmentioning

confidence: 99%

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Weed management strategies for the control of Rottboellia cochinchinensis in maize in Trinidad

Bridgemohan

Brathwaite

1989

Weed Research

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Summary. A weed management strategy for the control of Rottboellia cochinchinensis (Lour.) W.D. Clayton in maize, based on reducing the level of spikelet germination from the seedbank and reducing the intensity of weed‐crop interference, was conducted over two seasons. The management practices evaluated included chemical control (atrazine, metolachlor, pendimethalin, EPTC), cultural control (straw mulch), mechanical control (inter‐row cultivation) and biological control (living mulch). The results indicated that the various management practices had no effect on the growth and development of the crop but significantly affected the weed. The pendimethalin (1°5 kg a.i. ha−1) and inter‐row cultivation (14 and 28 days after planting) treatments gave satisfactory control of the weed in the crop over the duration of the critical period of weed competition. All other treatments were ineffective. All management practices made significant contributions to the weed seedbank, thus ensuring the predominance of the weed.

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Section: Resultsmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Weed management strategies for the control of Rottboellia cochinchinensis in maize in Trinidad

Bridgemohan

Brathwaite

1989

Weed Research

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“…Com relação ao manejo de capim-camalote, a rotação de culturas permite reduzir a associação entre o capim-camalote e algumas culturas possibilitando o manejo com controles alternativos, enquanto que a monocultura facilita que o capim-camalote seja dominante como planta daninha (FISHER et al, 1985). Freitas et al (2004), obtiveram controle de plantas adultas de capim-camalote apenas com sulfoniluréias, constatando que a capina manual proporciona alto índice de reinfestação da área, sendo que essa espécie, pode provocar reduções de até 80 % de produtividade das culturas (HOLM et al, 1977).…”

Section: Introductionunclassified

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

et al. 2012

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ResumoO capim camalote (Rottboellia exaltata L.f) tem sido relatado como uma importante planta daninha, podendo causar prejuízos econômicos e dificuldades no manejo em diversas culturas agrícolas. Foi determinado a emergência de plântulas de R. exaltata, em diferentes profundidades de semeadura (0, 0,5, 1, 5, 10, 12, 15 e 20 cm), em solos com diferentes texturas e valores de pH. Também avaliou-se os efeitos de diferentes coberturas de solo provenientes dede Mucuna aterrima, Canavalia ensiformis e Crotalaria spectabilis, dispostas na superfície ou incorporadas, sobre a emergência e biomassa da planta daninha. No solo arenoso, a maior emergência do capim camalote ocorreu aos 5,0 cm de profundidade. No solo argiloso o padrão de emergência foi semelhante, entretanto, observou-se uma redução mais acentuada na emergência com o aumento na profundidade de semeadura. A maior taxa de germinação foi observada no solo com pH variando de 6,8 à 7,0, verificando-se menor germinação em solo não corrigido, com pH de 5,3. Os manejos de palha mais efetivos na supressão de R. exaltata foram 10 t ha -1 de C. spectabilis posicionada sobre o solo argiloso e a incorporada no solo arenoso, 5 t ha -1 de C. ensiformis incorporada ao solo arenoso. Palavras-chave: Adubo verde, supressão, biologia, capim camalote AbstractThe grass camalote (Rottboellia exaltata Lf) has been reported as an important weed, may cause economic losses and difficulties in management in several crops. It was determined the seedling emergence of R. exaltata, at different depths of sowing (0, 0.5, 1, 5, 10, 12, 15 and 20 cm) in soils with different textures and pH values. It also assessed the effects of different amounts of straw Mucuna aterrima, Canavalia ensiformis and Crotalaria spectabilis, arranged on the surface or incorporated into the soil on the emergence and weed biomass. In sandy soil, the higher emergence of R. exaltata was 5.0 cm deep. In clay soil the pattern of emergence was similar; however, there was a greater reduction in emergency with the increase in sowing depth. The highest germination rate was observed in soil with pH ranging from 6.8 to 7.0, verifying lower germination in soil not corrected, at pH 5.3.The management of straw more effective in suppressing R. exaltata were 10 t ha -1 of C. spectabilis straw positioned on clayey soil and incorporated on the sandy soil, 5 t ha -1 of C. spectabilis incorporated on the sandy soil.

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“…In the tropics, weed life cycles may be extremely short. Echinochloa colona, Setaria verticillata and D. aegyptium approach flowering in 30-45 days whilst Rottboellia cochinchinensis produced mature seeds within 50 days of establishment (Fisher et al 1985). Similar short duration life cycles may also be observed in weeds of temperate latitudes (e.g.…”

Section: Growth Stages Of Fimbristylis Miliaceamentioning

confidence: 55%

GROWTH AND DEVELOPMENT OF Fimbristylis miliacea (L.)Vahl

et al. 2024

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This experiment was conducted in the glasshouse of Universiti Putra Malaysia, to determine the growth and development of Fimbristylis miliacea (L.) Vahl. Twenty F. miliacea seeds were surface sown in ten plastic buckets of 18 cm diameter filled with 3 kg soil. After germination only one plant/bucket was retained. Time of first seedling emergence, time and number of leaves appearing until first tiller formation, time of tiller formation, first inflorescence, the first 10 inflorescences appearance and their maturity were recorded for each plant. Plant height and the number of inflorescence per plant was recorded weekly for up to 4 months after sowing. The first ten inflorescences for each plant were tagged after emergence, subsequently mature inflorescences were collected and the numbers of spikelets/inflorescence, seeds/inflorescence, seeds/ plant and 1000 seed weight were determined. Statistical analysis was performed as complete randomized design on weekly observed plant height and inflorescence number using the SAS statistical software and means were tested using Tukey's studentized range test at the 5% level of probability. Fimbristylis miliacea seedlings emerged at 3 days after planting of seeds. Approximate times required for the sequential production of 10 leaves, tillers, first 10 inflorescence and their maturity were 28 days after emergence (DAE), 35 DAE, 49 DAE, 63 DAE, respectively. Plant height increased rapidly from 3-8 WAE and maximum plant height (64.05 cm) was attained at 10 WAE. This species had three important growth stages: a slow growth stage during the first 4 weeks after emergence (WAE); a rapid growth stage from 4-9 WAE; and finally, a maximum growth stage from 9-17 WAE. Within this first 4 weeks after emergence would be the most appropriate time for controlling this species with early post-emergence herbicides. Each F. miliacea plant produced on average of 2.3 tillers/plant and a total of 134 inflorescences, with 84 inflorescences/plant ripening within this period. Each inflorescence comprised 48 spikelets with 511 seeds and matured after 3 weeks of emergence. Total seeds/plant and 1000 seed weight were 42275 and 0.035 g, respectively. Time required for seed ripening was 76 days after emergence.

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Problems in control of Rottboellia exaltata L.f. in maize in Bukidnon Province, Mindanao, Philippines

Cited by 11 publications

References 2 publications

Weed management strategies for the control of Rottboellia cochinchinensis in maize in Trinidad

Weed management strategies for the control of Rottboellia cochinchinensis in maize in Trinidad

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

GROWTH AND DEVELOPMENT OF Fimbristylis miliacea (L.)Vahl

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