ZN AND SOYBEAN GROWING SOILS

Distributions of different zinc (Zn) forms in seven blocks of rice-wheat growing soils of Jammu region were studied. Understanding the Zn distribution in soil is important for efficient and effective management of the fertilizers recourses and to achieve a higher productivity rate. Sequential extrac[r]

IntroductionThere are several metal pollutants that are consideredto be of potential threat to environmental systems.These include Cd, Cr, Cu, Hg, Ni, Zn and Pb(Marschner, 1982; Friedland, 1990). Due to theirdistinct chemistry and characteristics, each representsa rather differe[r]

fractions accounted for most of the Zn. In contrast, Cd was present mainly in the reducible fraction. The results arediscussed in relation to the mobility and bioavailability of the metals in polluted soils.Ó 2002 Elsevier Science Ltd. All rights reserved.Keywords: Sewage sludge[r]

Sulphur (S) deficiency is widespread in Indian soils and is been emerging as a major limitation for enhancing productivity. Soils of Karnataka are largely deficient in sulphur (52 %). In this context, survey work was carried out during the year 2017 to know the status of sulphur and its forms and di[r]

An investigation was conducted in intensive rice growing block of Viruthachalam, Cuddalore district of Tamil Nadu. The major objectives were to assess the soil physico- chemical and biological quality parameters in rice soils and to compare soil quality indexing methods viz., Principal component ana[r]

Universal extractant is a term used to designate reagents or procedures to extract several elements or ions to assess soil fertility status or levels of toxicity. The extraction procedure should be rapid, reproducible, inexpensive, adaptable to soils from different regions, and extract the labile fo[r]

SCN regardless of rotation design. In these areas, more frequent use of nonhost crops is appropriate. Several rotation sequences may be required before an appreciable drop in SCN is observed. Farmers in the southern United States usually observe a more rapid reduction in SCN numbers. A southern rota[r]

amount of Zn in each fraction followed the order residualHFe –Mn oxides>carbona-te>organic>exchangeable and Pb in each fraction was residual>Fe –Mn oxidesHorganic,carbonate>exchangeable. The mobility and bioavailability of the four metals decli[r]

The present investigation entitled “Fertility status of irrigated soils of Jhotwara panchayat samiti of Jaipur district “was carried out during 2010-11. The soils were pH neutral to alkaline (pH 7.2–8.5) in reaction having electrical conductivity (EC) value in surface soil (0.53–2.51 dSm-1 ). The da[r]

This experiment was carried out to investigate the stabilizing influence organic amendments on soil reaction and micronutrient availability. Three different soil types (viz. acid, neutral and sodic soil) were considered for our experiment to represent soils of the whole country. Soils were incubated[r]

Effects of compost and phosphate amendments on arsenic mobilityin soils and arsenic uptake by the hyperaccumulator,Pteris vittata L.Xinde Caoa, Lena Q. Maa,*, Aziz ShiralipourbaDepartment of Soil and Water Science, University of Florida, Gainesville, FL 32611, USAbCenter f[r]

(Pierzynski and Schwab, 1993; LeClaire et al., 1984;Sims, 1986), the organically bound fraction (Sims, 1986; Samaras and Tsadilas, 1997) or thecarbonate fraction (LeClaire et al., 1984; Samaras and Tsadilas, 1997). The above-mentioned heavy metal forms do not remain constant in[r]

MỘT SỐ KIM LOẠI NẶNG TRONG ĐẤT MẶN VIỆT NAM Lê Thị Thuỷ, Phạm Quang Hà SUMMARY Heavy metals in saline soils of viet nam These soils in Vietnam are mainly coastal alluvial soils derived from sea salt affected sediments or saline water in estuaries and a small area of sodic[r]

and to admit air circulation. Leave the other unpunctured. Plant seeds of any kind in both cans and keep in a warm place. Add every third day equal quantities of water. Let seeds grow in both cans and observe the difference in growth for two or three weeks. To show the Effect of[r]

This assessment is carried out directly (see module description dealing with transferable and generic skills) and indirectly throughout the course and forms a component of assessed course work. Please note - This specification provides a concise summary of the main features o[r]

HS927Keys to Successful Tomato and Cucumber Production in Perlite Media1George J. Hochmuth and Robert C. Hochmuth21. This document is Factsheet HS927, one of a series of Department of Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and[r]

This study aims at investigating various chemical treatments and storage materials that could ensure good quality of seeds of soybean crop.

The amount of K fixed increased and percent of added K fixed of the soils decreased consistently with increasing rate of K application. Maximum percentage of K fixation was occurred at low rate of K application and minimum at higher dose of K application. The overall K fixation capacity of the soils[r]

ns 1.000 4 KẾT LUẬN VÀ ĐỀ NGHỊ 4.1 Kết luận Thời gian sinh trưởng trung bình là 85 ngày đối với các giống đậu nành nhập từ Hàn Quốc, Trung Quốc và Nhật Bản, riêng các giống đậu nành nhập từ Mỹ thì tương đối dài hơn so với MTĐ176. Chiều cao khi chín trung bình thuộc dạng thấp cây (31 cm). Các giống c[r]