[PDF] Top 20 Directory UMM :Data Elmu:jurnal:A:Agriculture, Ecosystems and Environment:Vol83.Issue1-2.Jan2001:

... principles and convert them into practical ...pampas, and its effect on critical ecological properties, were analysed and ...hydrology, and the trade-offs between productivity, stability ... Lihat dokumen lengkap

... herbaceous and wooded riparian strips, the overlap index of small mammal communities in these habitat types was lowest, indicative of differences in ...fields and prairies in the United States (Hooper, ... Lihat dokumen lengkap

... constancy and movement on an experimental array of forage patches planted within a field of winter ...ment and population dynamics of selected predators and parasitoids in a patchy ... Lihat dokumen lengkap

... leaching and soil biology (bacte- ria, fungi, springtails, mites, earthworms), the higher level of biological activity being driven by the use of versatile crop rotations and the reduced use of nutri- ents ... Lihat dokumen lengkap

... Bedford and Usher, ...farmland and are thought to be a supply of weed seeds (Forman and Baudry, 1984; Burel, ...support a greater abundance and species richness of Carabidae ... Lihat dokumen lengkap

... is a widespread practice to maintain soil ...decomposition and mineralisation processes of manure under farmers’ conditions are ...micro-organisms and meso-fauna on in situ release rates of nitrogen ... Lihat dokumen lengkap

... icant a week after infestation may be because one adult and its progeny were insufficient to cause detectable ...Westhuizen and Botha (1993) found that ...resistant and susceptible wheat ... Lihat dokumen lengkap

... parameters and indices that gov- ern decomposition and nutrient release in natural ecosystems were identified by Swift et ...(1982) and Schlesinger and Hasey ...decomposition, ... Lihat dokumen lengkap

... 1 and 2, the subject areas covered by Agriculture and Environment and Agro- Ecosystems contained considerable ...air and water, the quality of food, and the ... Lihat dokumen lengkap

... using a gas chromatograph combustion iso- tope ratio mass spectrometry (GCC-IRMS; Finnigan, Bremen, Germany) ...with a PreCon, while all other samples were directly ...in a Finnigan ... Lihat dokumen lengkap

... quantitative data (Greenslade, ...sampling and pitfall trapping both yielded nine significant treatment ...be a combina- tion of both pitfall traps and suction samples (Berbiers et ...such ... Lihat dokumen lengkap

... for a range of set-aside per- centages. An example of such a transition probability map (for a minimum set-aside percentage of 10%) is shown in ... Lihat dokumen lengkap

... growth and yield un- der field conditions were demonstrated in both ...is a need to perform supplemental UV-B studies under different climates and latitudes, in which different cultivars are grown ... Lihat dokumen lengkap

... production data about farm structure, main produc- tion processes in detail, performance, yield, quality, input and output massflow ...system and condi- tion), layout of farmstead, equipment, ... Lihat dokumen lengkap

... the environment (Zalom and Flint, ...use and maintain or increase farm profits without having significant effect on consumer prices (Bolkan and Reinert, 1994; Pimentel, ...Zalom and ... Lihat dokumen lengkap

... The data on the proportion of plants damaged by both cutworms and weevils in the early growing season suggest that birds did have a protective role, in plots situated near the field ...ton and ... Lihat dokumen lengkap

... viridis and I. notabilis, pesticide use is a possible explanation because the conven- tional and integrated fields had substantially higher numbers of pesticide applications than organic ...taining ... Lihat dokumen lengkap

... 1800 and 1950, ...fertilizers and pesticides, agriculture in Sweden underwent a technical and biological revolu- tion aimed at meeting the increased need for food by the Swedish ... Lihat dokumen lengkap

... 3-year and annual crop rotations with a wheat (Triticum aestivum ...rotation and found the former more profitable. Different crops and crop- ping systems have been shown to exhibit marked ... Lihat dokumen lengkap

... tion began at anthesis (1994) or was season long (1996). This increase in photosynthetic rate has been reported by many other authors across a wide range of plants (reviewed by Lawlor and Mitchell, 1991; ... Lihat dokumen lengkap