Response of crops to fertilizer application in volcanic soils

Potassium Isotopes in Herbaceous Plants: A Potential New Tool for C3 and C4 Plant Research

“…The phenomenon that high K caused Mg deficient symptoms in tomatoes has been observed when the soil K/Mg value increased from 4:1 to 8:1 (Li et al., 2018). The K/Mg values of around 3:1 in the study area are larger than the limit of Mg deficiency (Selassie et al., 2020; Yan et al., 2020), indicating plants could suffer from a possible Mg deficiency. As shown in Figure 5, these leaves were divided into two distinct parts by K/Mg and δ 41 K values.…”

Optimizing fertilization schemes to narrow the maize yield gap in smallholder farming systems in southern Ethiopia

“…For instance, K fertilizer was not applied in soil fertility management schemes due to a misconception that Ethiopian soils are rich in K [ 13 ]. Continuous cultivation of crops without K fertilizer [ 14 ], substantial removal of straw from the field [ 15 ], and introduction of high yielding crop varieties [ 16 ], can result in a considerable drain of soil K reserves, thereby increasing the responsiveness of crop yields to K fertilization [ 17 , 14 , 18 , 19 ].…”

Soil Fertility and its Relationship to Soil Mineralogy of some Areas in Southwest Sinai, Egypt

“…Soil mineralogy has a profound influence on the dynamic behavior of soils namely, the gains, losses, transformation and translocation of inorganic and organic substances Therefore, understanding soil mineralogy is important for assessing functional soil properties , such as interactions with nutrients, nutrient quantity (stock) and availability (intensity or strength of retention by soil) (Kamau et al, 2012)., sorption of metals, organics and nutrients to mineral surfaces (Violante et al, 2010) fertilizer response (Selassie et al, 2020), water storage (Schaller et al, 2020), erosion susceptibility ( (Hack, 2020), and provision of sites for microbial and faunal activities (Kooistra et al, 2010). These properties determine soil agricultural, environmental and engineering qualities (La Rosa, 2006).…”