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An empirical model used to standardize data on root investigations was P = 100 (1-e-fx) where P was the percentage of roots in x cm of soil, and f was...
Read moreIncreasing cropping system diversity is one strategy for reducing reliance on external chemical inputs in agriculture and may have important implicati...
Read moreThere are many arthropod species on farmland that are not economic pests but which have an important role in the wider ecology of agricultural ecosyst...
Read moreThe ecosystem service of predation of weed seeds by naturally occurring seed-eating animals, including ants, in agricultural fields has been suggested...
Read moreStudies were carried out in Hertfordshire, England, during 1971-75 on the carabid and staphylinid fauna in areas of a Stackyard field (clay with flint...
Read moreBrent geese fed on fields of winter wheat at Burnham Deepdale, Norfolk from Nov. to Mar., and particularly during Dec. to Feb. On undisturbed fields t...
Read moreMeasurements were made of the diurnal changes in the leaf water potential of flag leaves of winter-sown and spring-sown wheat in 3 different yr, and o...
Read moreThe demography of the annual grass weed A. sterilis subsp. ludoviciana was studied during 3 consecutive years on populations growing in winter wheat c...
Read moreAn organic long-term field experiment with two factors has been carried out since 1998 at the experimental station Gladbacherhof, University of Gieβen...
Read moreBreeding programs of the Green Revolution based their success on increasing the production of harvestable biomass, in relation with non-commercial par...
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