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Effect of Organic and Inorganic-P Fertilizer Applications on Nitrogen Fixation and Yield of Three Mungbean Varieties in the Central of Thailand

Chatprawee Dechjiraratthanasiri 1, Jiraporn Inthasan 2, and Choochad Santasup 1
1. Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
2. Division of Soil Resources and Environment, Faculty of Agricultural Production, Maejo University, Chiang Mai, Thailand
Abstract—To study the effect of organic and inorganic-P fertilizer applications on nitrogen fixation and yield of 3 mungbean varieties in the central of Thailand fields study were conducted. Three mungbean varieties as Maejo 3 (MJU 3), Khampangsan 2 variety (KPS 2) and Chainat 72 variety (CN 72) as subset experiments were designed in randomized in a Complete Block Design (RCBD) with four replications. Five treatments were laid out: 1) control (no fertilizers); 2) Triple Superphosphate (TSP) 125kg/ha (TSP Low rate); 3) TPS 250kg/ha (TSP High rate); 4) TSP Low rate with Organic Fertilizer (OF) 6.25ton/ha and 5) TSP High rate with OF 6.25ton/ha. The highest percentage of nitrogen derived from the atmosphere (%Ndfa), amount of nitrogen fixed, and yield were reported at 57.3%, 70kg N/ha and 1,138kg/ha, respectively in MJU 3 variety. TSP low rate (125kg/ha) with Organic Fertilizer (OF) 6.25ton/ha presented the high of shoot dry weight, total N, %Ndfa, amount of nitrogen fixed and yield in all varieties. In conclusion, we recommend MJU 3 variety as the best by applying TSP low rate combined with OF to increase nitrogen fixation and yield of mungbean.
 
Index Terms—organic fertilizer, inorganic-P fertilizer, nitrogen fixation, mungbean, yield

Cite: Chatprawee Dechjiraratthanasiri, Jiraporn Inthasan, and Choochad Santasup, "Effect of Organic and Inorganic-P Fertilizer Applications on Nitrogen Fixation and Yield of Three Mungbean Varieties in the Central of Thailand," Journal of Advanced Agricultural Technologies, Vol. 8, No. 2, pp. 67-72, December 2021. Doi: 10.18178/joaat.8.2.67-72

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