Agricultural applications of chemical fertilizers are a world wide practice. The specific activity of uranium-238 and heavy metals in phosphate fertilizers depends on the phosphate ore from which the fertilizer produced and on the chemical processing of the ore. Composite phosphate fertilizers samples where collected and the uranium-238 specific activity, in Bq/kg, and As, Cd, Cu, Pb, Se concen...

in order to study the effects of integrative applications of chemical fertilizers and biofertilizers on grain yield and oil of borago officinalis under water deficit stress, a field experiment was conducted at kermanshah, iran, in 2011. experiment was arranged as split plot under a randomized complete block design with 3 replications. water deficit stress with four levels was applied as the mai...

This study aimed to explore the effects of straw compost with different proportions as replacement chemical fertilizer on soil microorganisms well rice growth yield and quality. The variety Quan9you 063 in Fengyang, Anhui province was employed research subject. Four experimental treatments were set: local conventional fertilization a control (CK) substituting at 10% (T1), 20% (T2), 30% (T3) inv...

This work investigated the effects of potassium mineral fertilizers, combined with biofertilizers (T1–T4 treatments) and foliar spraying seaweed extract (at 1 g/L, 2 3 g/L) on vegetative growth characters, chemical constituents foliage, yield quality parameters globe artichoke. The maximum height, fresh dry weight leaves, was recorded in plants that received only soil added (T1 treatment) spray...

Bell pepper is an important vegetable crop containing lots of bioactive compounds. The present study was designed to improve the productivity and quality bell with application arbuscular mycorrhizal fungi (Rhizophagus irregularis) plant growth-promoting bacteria (Azotobacter chroococcum) in a combination chemical fertilizer. Five treatments consisted 75% fertilizer (T1), 100% (T2), + R. irregul...

A study was carried out on the optimal dose of inorganic fertilizer used in carp polyculture system over a period of 10 months. Three treatments were assigned: without inorganic fertilizer, with the application of 100 kg/ha/month inorganic fertilizer and 150 kg/ha/month inorganic fertilizer as T1, T2 and T3, respectively. Each treatment had three replications. The selected indigenous carp speci...

Chronic Kidney Disease of unknown etiology (CKDu) has escalated into an epidemic in North Central Province (NCP) and adjacent farming areas in the dry zone of Sri Lanka. Studies have shown that this special type of CKD is a toxic nephropathy and arsenic may play a causative role along with a number of other heavy metals. We investigated the hypothesis that chemical fertilizers and pesticide cou...

in order to study the effect of different organic fertilizers on quantitative and qualitative characteristics of fenugreek forage, an experiment was conducted based on completely randomized block design with six treatments and three replications at agricultural research station, college of agriculture, ferdowsi university of mashhad, iran, during 2006. the experimental treatments were four orga...

There is need for proper understanding of plant nutrients status in the soil and their requirements by various crops under different farming system. Farmers must be encouraged to make compost from residues, house refuse and other decomposable wastes available with them. If crop residues have been incorporated into the soil, care must be taken that it must be incorporated well in advance (about ...

background & aim: in sustainable agriculture, organic fertilizers are considered as important alternatives for chemical ones and are of great importance in organic producing of medicinal plants. this study was conducted to study the effects of organic fertilizers on cassia angustifolia vahl in dry and subtropical climate.  experimental: this study was carried out in jiroft region, kerman (i...