The aim of this study was to investigate how potato yield, the concentrations of elements (N,
P, K, Ca, Mg, S, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in tubers and their uptake are affected …

Canopy normalized difference vegetation index (NDVI), soil plant analysis development
(SPAD) reading and petiole sap NO3−‒N concentration are increasingly used as quick and …

Application time of nitrogen (N) fertilizer can significantly influence the yield and quality of
potato tubers. The objective of this experiment was to assess the effects of N application time …

Vegetable production requires improved nitrogen (N) management practices. Monitoring
petiole sap nitrate concentration ([NO 3−–N]) is a simple and cheap method to evaluate crop …

The response of potato plants cv. Cara grown under newly sandy soil conditions, subjected
to two levels of urea fertilizer (46% N) as a nitrogen source, 150 and 300 kg urea/fed. and …

The relatively poor accessibility, high costs, long turnaround time for analysis, and lack of
information about soil and plant testing in the Andean highland region (Altiplano) of Bolivia …

The central Andean highland plateau region (Altiplano) in Bolivia is a semi-arid region
primarily inhabited by indigenous agricultural communities that have mixed livestock and …

Seasonal dynamics of total soil nitrogen, ammonium and nitrate ions contents were
evaluated for a processing potato field experiment conducted on three sites with different …

The influence of separate and combined fertilization with nitrogen, phosphorus and
potassium, as well as the addition of magnesium to the triple fertilizing combination on the …

First of all, I am highly indebted to almighty God that he has given me strength,
encouragement and showered his blessing during entire past and present time. I feel great …