Suitability of fertilizer application for pineapple on Korat soil series
1995
Narong Polwang | Pornpiboon Tampiboon | Mongkolsak Maichandang (Rajamangala Inst. of Technology. Lampang Agriculral Research and Training Centre, Lampang (Thailand))
Study aimed to find out the suitability of fertilizer application for pineapple on Korat soil series (Oxic Paleustults) in Lampang province. The experimental design was split plot in RCB with 4 replications. Treatments consisted of 2 mainplots (F1=31.5-7.5-7.5; F2:31.5-7.5-7.5 and 12-5-21.6 applied at lower leaf and 3 subplots (Nil=not applied; K2SO4=Applied 80 ml of 500 gm K2SO4 in 20 litre water and K2SO4+T=Applied 80 ml of 500 gm K2SO4+45 gm Unilate in 20 litre water). The solutions of subplots were applied three times such as 1) one month before flower inducing 2) at flower inducing and 3) one month after flower inducing. The results showed that the applying fertilizer at lower leaf 2 times (31.5-7.5-7.5 and 12-5-21.6) increased fruit weight and fruit lenght significantly. Application of K2SO4 and K2SO4+T trend to increase degree Brix especially at the part of Degree Brix 2. This experiment did not show interaction between mainplots and subplots.
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