Abstract
Background: Peanut (Arachis hypogaea L.) plays an important role in cropping systems with sandy soil. However, studies on peanut cultivation in sandy soil of Binh Dinh province, Central Vietnam are still limited due to imbalanced fertilizer use. Methods: The present study compared two different fertilizer combinations including (T1) Control (Farmers’ practice): 24 kg N (urea) + 74 kg P2O5 (Thermophosphate) + 84 kg K2O (KCl) + 100 kg NPK (16 - 16 - 8 - 13S) ha-1 and (T2) 40 kg N (urea) + 90 kg P2O5 (Thermophosphate) + 90 kg K2O (K2SO4) based on 8 tons of cattle manure + 500 kg lime ha-1 on peanut yield, quality and some physico-chemical properties of the sandy soil. All treatments were arranged in a completely randomized block design (RCBD) with 3 replicates in Cat Hanh and Cat Hiep communes, Phu Cat district, Binh Dinh province. Results: The results showed that the application of fertilizer combination including potassium and sulfur increased peanut yield (4.35 - 4.48 tons/ha), protein content (24.4%), lipid (52.5 - 52.8%), and improved some soil physico-chemical properties (N 9.09% and P2O5 11.04%). Thus, balanced fertilizer application including 8 tons of cattle manure + 40 kg N + 90 kg P2O5 + 90 kg K2O (K2SO4) + 500 kg of lime ha-1 can be recommended for the best peanut production in sandy soil of Central Vietnam.
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