Crops and soils
Biomass crops can be used for biological disinfestation and remediation of soils and water
... polluted soils, supple- menting animal feed and other pur- ...these crops have high allelopathic activity and must be employed care- fully in rotations to avoid damaging subsequent ...
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Catch crops have little effect on P and K availability of depleted soils
... main crops on these depleted ...catch crops grown on more fertile soils actually play a significant role in the cycling of P and K still remains unresolved ...
7
Heavy Metals in Soils Used For Irrigation of Crops along River Tatsawarki in Kano, Nigeria.
... Previous studies ([11], [12], [13], and [14]) have established the presence of some heavy metals in excess of the permissible limits set by FEPA and WHO in some of the effluents that are being discharged into the streams ...
7
Distribution and mobility of vanadium in cultivated calcareous soils and some food chain crops
... depend on chemical species (Teng et al., 2011). The aim of this study is to evaluate vanadium levels in calcareous soils and food chain crops along northwestern coastal region of Egypt. As a rare element, ...
8
The K trial A 33 years study of the connections between manuring, soils and crops
... At the studies of the preceding crop effects, the attention was concentrated to K1, K5 and K8. Both clover/grass ley and summer wheat with undersow did have high preceding crop effects in K1 and K5. It seems that in the ...
94
Reduction of Notrate Leaching in Agricultural Soils Via Cover Crops
... Distribution of soil inorganic N in March (a) and April (b) 1993 as affected by cover crops following the previous corn crop fertilized with 300 kg N ha".. The symbols t and [r] ...
31
Ability of some crops for phytoremediation of nickel and zinc heavy metals from contaminated soils
... 1). However, clover was a powerful crop for the uptake of excess concentrations of zinc (Zn), where zinc (Zn) content in clover tissue was higher than in wheat and rapeseed. It can therefore be concluded that wheat and ...
6
ROLE OF EXTENSION SERVICES ON YIELD IMPROVEMENT OF CROPS IN NUTRIENT DEPLETING SOILS- A REVIEW
... since soils and farming systems are closely related to the rainfall regimes (FAO, ...Sahelian soils than the Alfisols of the Guinean zone, which is poorly structured and highly prone to crust and compaction ...
19
Impacts of land use and topography on soil organic carbon in a Mediterranean landscape (north-western Tunisia)
... (field crops, permanent crops, forest, and grazing land), three slope categories (flat, moderate, and steep) and two aspects (north- and south- ...field crops, only one factor – slope – significantly ...
13
The uptake of magnesium under exhaustive cropping
... The 'exhaustion' magnesium values were the sums of the magnesium removed by harvested crops, and by stubble and roots, plus the exchange- able magnesium extracted from the dried soils.. [r] ...
5
Occurrence of plant parasitic nematodes in commercial pineapple fields and effect of biocontrol agents on meloidogyne species in Kenya
... several soils that nematophagous fungi increase under some perennial crops and under those grown in monocultures, and so may control some nematode pests, including Meloidogyne (Stirling, ...
112
Canada's rangeland resource: A look ahead.
... Agricultural research stations in the region have solved such problems as trace ele- ment deficiency, growing forage crops on bog lands and organic soils, increas[r] ...
6
Nitrous oxide emissions from arable soil: Effects of crop rotation, tillage and manure management
... On such soils reduced tillage appeared to be a mitigation option › Anaerobic digestion of green manure crops could be a strategy to improve crop yields without additional N2O › Long-term[r] ...
53
Earthworms for safe and useful management of solid wastes and wastewaters, remediation of contaminated soils and restoration of soil fertility, promotion of organic farming and mitigation of global warming: A review
... farm soils becomes too soft requiring very low ...contaminated soils’ and ‘vermi-agroproduction of cereal and vegetables crops’ with amazing ...contaminated soils are significantly removed ...
16
Mycorrhizal Inoculation to Increase Yield of Soybean Direct-Seeded Following Rice of Different Growing Techniques in Vertisol Soil, Lombok, Indonesia
... vertisol soils were hard and dry in the dry season, root growth will also be hampered and nutrient uptake from the soil will also be ...rice crops, which are normally irrigated with flooded irrigation ...
8
Nutrient Status of Cambodian Soils, Rationalisation of Fertiliser Recommendations and the Challenges Ahead for Cambodian Soil Science
... using the following fertiliser and rice prices (rice $225, Urea $500, DAP $700 and KCl $700/t) following fertiliser. These calculations (Table 6) show that poor return, both in terms of $US/ha and value/cost ratio, would ...
9
Carbon and nitrogen stable isotope ratios can estimate anionic polyacrylamide degradation in soil
... gives soils different δ 13 C and δ 15 N ...Haplocalcid soils as compared to the Typic Torripsamment, Typic Kandiudult or Xeric Argialboll ...Argialboll soils resulting from C input to soils ...
9
Effects of oil spillage on soils nutrients of selected communities in Ogoniland, south-eastern Niger Delta, Rivers State, Nigeria
... staple crops starts in the dry season (November-March) when floodwater must have ...plantations. Crops that are usually planted include cassava, cocoyam, plantain, banana, maize, yam, rice, sugar cane, and ...
14
Impact of Crude Oil on Soil Nitrogen Dynamics and Uptake by Legumes Grown in Wetland Ultisol of the Niger Delta, Nigeria
... cover crops grown in the uncon- taminated soil than soils with different hydrocarbon content (Figure 1) suggesting that crude oil contamination reduced N uptake by ...taminated soils observed in this ...
9
High-throughput sequencing technology reveals that continuous cropping of American ginseng results in changes in the microbial community in arable soil
... cropping soils of American ginseng compared to those of traditional ...with soils used for traditional crops, the relative abundance of bacterial and fungal groups changed in soils subjected ...
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