[PDF] Top 20 Directory UMM :Data Elmu:jurnal:A:Applied Soil Ecology:Vol13.Issue3.Dec1999:

... considered a broad-spectrum insecticide (Duf®eld and Aebischer, 1994; Duf®eld et ...As a consequence, secondary food-chain effects may be more important with dimethoate as in the case of ...of a ... Lihat dokumen lengkap

... is a compli- cated process that requires some technical expertise, and access to a soil analytical laboratory (Amato and Ladd, ...However, soil microbial biomass is more sensitive to grazing ... Lihat dokumen lengkap

... and soil pH and Ca-AL that were observed with the low tractor traf®c treatments suggest that acidi®cation of the soil is an important reason for the reduction in earthworm populations in these treat- ...of ... Lihat dokumen lengkap

... as a strategy to improve plant P nutrition and productivity is ...contained soil (available P = 5.33 mg P soil ÿ1 , Bray 1) collected at Fashola from a derived savanna in ...offers a ... Lihat dokumen lengkap

... usually a trend (with statistically signi®cant differences only in one year) for more fungal isolations per root piece with increasing number of successive wheat ... Lihat dokumen lengkap

... of a rye (Secale cereale L.) cover crop into the soil prior to planting cotton (Gossypium hirsutum ...Chitwood). A greenhouse study was conducted to determine the duration of the effectiveness of rye ... Lihat dokumen lengkap

... in soil microbial biomass C concentration and in activity of extracellular enzymes of the cellulolytic complex were investigated in a ®eld experiment after eight years of cultivation with either low organic ... Lihat dokumen lengkap

... heath soil may point to a unique in¯uence of the Calluna vegetation on microbial cycling of N within the ...play a major role in the competition between Calluna and grass species because ericaceous ... Lihat dokumen lengkap

... of soil and is thought to feed primarily on particulate organic mat- ter, while ...the soil and feeds primarily on surface ...assumed a C content of 45% for POM and LIT in both the agroecosystems ... Lihat dokumen lengkap

... ingest soil organic matter that is stabilized by an intimate association with inorganic soil ...from soil at alkaline pH can be explained partly by an increased polarity, resulting from the ... Lihat dokumen lengkap

... several levels of natural light. When the price of light is zero (origin of ®gure) the optimal level of supplementary light is in®nite. As it increases, less and less light is used, until at a certain high price, ... Lihat dokumen lengkap

... presents a linear programming model designed to evaluate the impact of changes in milk to milk-quota- leasing price ratios, nitrogen fertiliser and concentrate prices on the pro®tability of a technically ... Lihat dokumen lengkap

... The site for this investigation is the Iowa State University's Northeast Research Center located at Nashua, IA. Site soils consist of Kenyon (®ne- loamy, mixed, mesic, Typic Hapludolls) and Readlyn (®ne-loamy, mixed, ... Lihat dokumen lengkap

... and soil type, have signi®cant e€ects on productiv- ...and soil type signi®cantly in¯uence farmer's eciency as found in the DEA± CCR model under constant returns to scale, this e€ect seems to disappear ... Lihat dokumen lengkap

... Farm management scenarios obtained with cur- rent prices for the di€erent objectives are shown in Table 1. The results demonstrate that di€erent objectives generate di€erent strategies to achieve the milk quota. However, ... Lihat dokumen lengkap

... are a varietal specific trait, which results in slower movement of water and minerals to the fruits from soil leading to the development of spongy ... Lihat dokumen lengkap

... Chilling requirements and changes in polar lipids of two blackberry cultivars (Rubus spp.), `Triple Crown Thornless' and `Hull Thornless' were determined during dormancy and budbreak. Under field conditions, `Triple ... Lihat dokumen lengkap

... morphological responses to photoperiod and temperature variations at the end of summer (Tables 1 and 2). `Redgauntlet' plants exhibited a precocious vegetative growth decrease. Length decreases of the successive ... Lihat dokumen lengkap

... conductivity (E.C. ˆ 4.63 dS m ÿ1 ). In the greenhouse, the relative humidity was 60±80% and the temperature range 24 48C, with extremes of 158 and 30 8 C. The experimental design was a randomized complete block ... Lihat dokumen lengkap

... by a 15 min dip in a 3% calcium hypoclorite solution followed by three rinses in pure sterile ...under a stereomicro- scope and plated in 94 mm Petri dishes containing 12 ml of Gamborg's B5 medium ... Lihat dokumen lengkap