Effect of clovers intercropping and earthworm activity on weed growth

• Autorzy: Zarea M.J. , Ghalavand A. , Goltapeh E. M. , Rejali F.

Warianty tytułu

PL

Działanie międzyplonów koniczyn i aktywność dżdżownic na wzrost chwastów

• Języki publikacji: EN

Abstrakty

EN

Forage legumes are used to enhance soil fertility of the agroecosystem. Understanding their effect on the agroecosystem during their growing period is essential. The objective of this field study was to evaluate annual clovers intercropping and earthworm activity on the growth of weeds. The field experiment was carried out during the 2006–2007 growing seasons at the research farm of the Seed and Plant Improvement Institute, Karaj (Iran) involving various mixed cropping ratios of berseem clover (Trifolium alexandrinum L., B) and Persian clover (Trifolium resupinatum L., P) (B : P = 1 : 0, 3 : 1, 1 : 1, 1 : 3) with and without earthworm Pheretima sp. inoculation. Nitrogen content of plants and weeds as well as biomass was measured. Forage yield was higher in 2006 than 2007 but had similar response to cropping systems and earthworm inoculation. Total forage yield was highest in mixed cropping system (MCS). While in the first cut, the berseem sole crop (SC) tended to greatly suppress the growth of weeds, in the second cut Persian clover sole crop further suppressed weeds. The greater total crop biomass had an even higher weed suppression. Earthworm activity did not affect cut 1 but increased forage and weed biomass yield in cut 2. However in cut 1, berseem tended to greatly suppress the growth of weeds, which may be explained by the greater nitrogen accumulation in monocultures and intercrops, Persian clover in cut 2 had greater suppression on weed biomass production. Nitrogen accumulation of crops and weed increased under earthworm activity in the second cut.

PL

Paszowe rośliny motylkowe są wykorzystywane do podniesienia żyzności gleby w agrosystemie. Zrozumienie ich działania w agrosystemie w czasie wzrostu jest podstawowe. Celem niniejszej pracy była ocena międzyplonu jednorocznych koniczyn i aktywności dżdżownic na wzrost chwastów. W sezonach wegetacyjnych 2006– 2007, przeprowadzono doświadczenie polowe w gospodarstwie doświadczalnym Instytutu Ulepszania Nasion i Roślin Karaj (Iran), uwzględniające różne proporcje mieszanek Triforium alexandrinum L., B i koniczyny perskiej (T. resupinatum L., P) (B : P = 1 : 0, 3 : 1 i 1 : 3), z inokulacją dżdżownicami Pheretina sp. lub bez takiej inokulacji. Określono zawartość azotu w roślinach i w chwastach oraz ich biomasę. Plon roślin był wyższy w 2006 r. niż w 2007 r., ale reakcja na systemy uprawy i zaszczepienie dżdżownicami była podobna. Ogólny plon roślin był najwyższy w systemie mieszanej uprawy (MCS). W pierwszym pokosie T. alexandrinum (SC), wystąpiła tendencja dużego ograniczenia chwastów, a w drugim pokosie to ograniczenie było kontynuowane. Przy większej biomasie koniczyny, występowało większe ograniczenie chwastów. Aktywność dżdżownic nie wpływała na pierwszy pokos, ale zwiększała plon biomasy drugiego pokosu. Jednak w pierwszym pokosie koniczyna wykazywała tendencję dużego ograniczenia wzrostu chwastów, co może być tłumaczone większym nagromadzeniem azotu w monokulturze i międzyplonach. Koniczyna perska w drugim pokosie wykazywała większe ograniczenie wytwarzania biomasy chwastów. W drugim pokosie akumulacja azotu w roślinach i aktywność dżdżownic wzrastały.

Słowa kluczowe

EN

clover; intercropping; earthworm activity; weed; plant growth; weed management; cropping system; soil fertility; agroecosystem

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2010
• Tom: 50
• Numer: 4
• Opis fizyczny: p.463-469,fig.,ref.

Twórcy

autor

Zarea M.J.

• Department of Agronomy, College of Agriculture, Ilam University, P.O. Box 69315516, Ilam, Iran

autor

Ghalavand A.

autor

Goltapeh E. M.

autor

Rejali F.

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