Philippine E-Journals

Effect Of Azolla As Source Of Nitrogen On The Growth And Yield Of Pechay (Brassica Napus L. Var. Chinensis)

Zenaida M. Cuevas | Rebecco M. Santiago | Elizabeth D. Briones

 

Abstract:

Plants applied with either azolla or inorganic fertilizer performed better than the unfertilized ones. Increasing the rate of azolla application from 120 to 210 kg N/ha correspondingly increased all the parameters measured and the net income during the first cropping. However in the second cropping, all the para-meters considered and the net income tremendously decreased. Highest yield and net return in both croppings were obtained from application of 210 kg N/ha from azolla while the unfertilized control showed the lowest values. Application of the same amounts of nitrogen (165 kg N/ha) from azolla {T3) and inorganic fertilizer {T1) did not produce significant differences in all parameters during the first cropping. However during the second cropping, T 3 but not T 1 produced higher average weight per plant and yield than the control. The soil pH and organic matter, phosphorus and potassium contents in- creased as the rate of azolla application was raised from 120 kg to 210 kg N/ha.