The tendency to use natural organic wastes is one of the environmentally safe applications in crop production. Therefore, presented study aimed determine effect adding mushroom and sulfur residues gypsiferous soil their efficiency improving production broccoli ‘Balimo F1’ (Brassica oleracea var. ‘Italica’). set out a randomized complete block design with three replications. 10 combined treatmen...

We present the diversity of Asteraceae in Arequipa Region southern Peru, an area strongly influenced by volcanism, which has given rise to different soil types and determined a very wide bioclimatic vegetational zonation. distribution endemisms Peru Arequipa, dry puna. For this purpose, we have used methodology Rivas-Martínez, characteristic soils each collection point, distance localities from...

Abstract The aim of this paper was to study the kinetics Boron adsorption by using concepts and different concentrations Boron. A number laboratory experiments were conducted on three samples gypsum soils which taken from some fields Tikrit University Al-Alam city. soil contained low medium with concentration (62) g.kg -1 (134) gm.kg respectively College Agriculture’s field at Tikrit, third hig...

topography and climate are two important soil forming factors affecting genesis and clay mineralogy of soils. calcareous and gypsiferous soils are widely spread in arid and semiarid parts of iran and palygorskite is a dominant clay mineral in these soils. the objectives of the study were to: (1) determine soil genesis and classification along the climotoposequence and (2) investigate clay miner...

Three pedons were selected representing the soil series of study area in Baiji city, which are Khadraniya, Al-Sharqat, and Manjour soils series, calcareous gypsiferous soils, to diagnose some micro-morphological Features horizons. Pedons morphologically described, disturbed undisturbed samples collected from each horizon. The presence (calcic) (gypsic) horizons has been diagnostic by morphologi...

In order to accurately model soil reclamation with concentrated electrolytes such as CaCl2 or sea water, it must be determined if there is an effect of salinity on the Na-Ca exchange selectivity. A new procedure for determining Na-Ca selectivity in calcareous and gypsiferous soils was used to study the effects of ionic strength and mineralogy on Na-Ca exchange. Four specimen clay minerals and t...