walnut tree is grown for multiple purposes. indeed, it is economically important and increasing its yield and improving its quality in order to compete in the international markets is one of great importance. to this end, one significant management practice is proper use of suitable fertilizers. zinc and phosphorus are two important elements in the nutrition of walnut. in this study, experiment...

Sorghum bicolor is an important grain species used for food and feed production, where P a key element/nutrient in production. The effect of increasing phosphorus doses to sorghum Cerrado soil with sandy texture low fertility conditions was evaluated. study conducted at the Pântano Farm, Jataí, Goiás, Brazil. cultivar AG 1085. 0 (control), 40, 80, 120, 160 kg ha-1 P2O5 were used, whose source t...

ABSTRACT Phosphorus is of fundamental importance for the energy supply necessary plant metabolism, but it still understudied important agricultural crops such as cassava. The objective this study was to evaluate accumulation and efficiency phosphorus use in different cassava cultivars semiarid region. Two experiments were carried out during two seasons 2018/2019 2019/2020 Mossoró, Rio Grande do...

The Montado is an agro-silvo-pastoral ecosystem characteristic of the Mediterranean region. Pasture productivity and, consequently, possibilities for intensifying livestock production depend on soil fertility. Soil organic matter (SOM) and phosphorus (P2O5) are two indicators evolution fertility in this ecosystem. However, their conventional analytical determination by reference laboratory meth...

In order to study the effects of nitrogen (N), phosphorus (P) and potassium (K) on the yield, the appearance eligibility ratio and the contents of total glucosinolates and glucoraphanin of cauliflower, the 311-A optimization regression design was used to conduct field experiments of N, P, K fertilizer treatments using winter cauliflower variety ‘‘HB16’’. The models of the balanced application f...

The low phosphorus (P) availability is considered one of the most limiting factors for suitable crop production in Brazilian Cerrado areas. We aimed to define best P fertilizer management maximum soybean and maize grain yield minimum soil adsorption new agricultural Two experiments were carried out a Hapludox (pH 5.0) over six years. first experiment evaluated five (correction maintenance): cor...

Fluoride-containing bioactive glasses and glass-ceramics in the SiO2-P2O5-CaO-CaF2 system are of great interest for dental applications, where precipitation fluorapatite supports tooth remineralization. Fluorine quantification those is key to estimate thermal properties crystallization tendency. This work presents a study on fluorine determination by laser induced breakdown spectroscopy (LIBS) ...

In several areas with a high density of animal production, manure is no longer exclusively considered as a fertiliser. In order to limit the production or a more environmental friendly use, efforts are done to reduce the mineral excretion. In such a context, both from governmental side as for the producer a reliable calculation of the on farm production is useful. Based on the input (feed) outp...

A field experiment was conducted to determine the response of different doses of N and P2O5 on the growth and flower quality of gladiolus at farmer field district Quetta during the summer season 2008. Six treatments were included in the trial viz; T1 (125+100); T2 (125+200); T3 (150+100); T4 (150+200); T5 (175+100) and T6 (175+200) NP kg/ha were tested in four replicated randomized complete blo...

Phosphorus and nitrogen are essential macronutrients necessary for the survival of virtually all living organisms. In groundwater systems, these nutrients can be quite scarce and can represent limiting elements for growth of subsurface microorganisms. In this study we examined silicate sources of these elements by characterizing the colonization and weathering of feldspars in situ using field m...