Effect of Herbicides on Yield and Yield Components of Hybrid Maize (Zea mays)

ABSTRACT Maize crop (Zea mays) is facing lots of problems from different pests throughout Asia, including Pakistan. Weed infestation is one of the serious pests that remarkably decrease the grain yield in maize. In Khyber Pakhtunkhwa province of Pakistan, the trend of maize hybrid cultivation is gai...

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Veröffentlicht in:Advances in Weed Science 2016-12, Vol.34 (4), p.729-736
Hauptverfasser: KHAN, I.A., HASSAN, G., MALIK, N., KHAN, R., KHAN, H., KHAN, S.A.
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Sprache:eng
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Zusammenfassung:ABSTRACT Maize crop (Zea mays) is facing lots of problems from different pests throughout Asia, including Pakistan. Weed infestation is one of the serious pests that remarkably decrease the grain yield in maize. In Khyber Pakhtunkhwa province of Pakistan, the trend of maize hybrid cultivation is gaining the attention of the farmers due to its higher production. Therefore, in this research we tested herbicides (Stomp 330 E, Dual gold 960 EC, 2,4-D, ester) in maize hybrids (P-3025, P-32T78, P-3203). The experiment was done in RCB design with split plots arrangement, where maize hybrids were kept in main plots, while herbicides were assigned to the subplots. Each treatment was repeated three times at the New Developmental Farm (NDF), at the Peshawar University of Agriculture, Pakistan. Results revealed that both hybrids and herbicides significantly increased plant height, biological yield and grain yield. However, the lowest weed density (142.50 m-2) was observed in Dual Gold 960 EC treated plots. Similarly, plant height (247.188 cm) and grain yield (2.253 ton ha-1) was maximum in maize hybrid P-3025 and Dual gold treated plots. From the instant experiment, it is concluded that the Dual gold 960 EC herbicide is declared as the best herbicide for weed suppression in maize, while maize hybrid P-3025 was the best hybrid giving maximum yield in the study. RESUMO A cultura do milho (Zea mays) está enfrentando muitos problemas com diferentes pragas em toda a Ásia, incluindo o Paquistão. A infestação de plantas daninhas é uma das pragas graves que muito diminuiu a produtividade de grãos nessa cultura. Na província de Khyber Pakhtunkhwa, no Paquistão, a tendência para o cultivo de milho híbrido está chamando a atenção dos agricultores, devido à sua maior produtividade. Assim, na presente pesquisa foram testados os herbicidas (Stomp diretiva 330 CE, Dual Gold diretiva 960 CE e 2,4-D, éster) em híbridos de milho (P-3025, P-32T78 e P-3203). O experimento foi realizado em delineamento RCB (Randomized Complete Block), por meio de parcelas subdivididas, em que híbridos de milho foram mantidos nos lotes principais, enquanto os herbicidas foram designados em sublotes. Cada tratamento foi repetido três vezes no New Developmental Farm (NDF), da Faculdade de Agricultura de Peshawar, Paquistão. Os resultados revelaram que tanto os híbridos quanto os herbicidas aumentaram significativamente a altura da planta e seu rendimento biológico, assim como a produção de grãos. No entanto,
ISSN:0100-8358
1806-9681
1806-9681
2675-9462
DOI:10.1590/s0100-83582016340400013