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Journal > Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) > Rekomendasi Pemupukan Kalium untuk Tanaman Nenas Berdasarkan Status Hara Tanah

 

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Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
Vol 39, No 1 (2011): Jurnal Agronomi Indonesia
Rekomendasi Pemupukan Kalium untuk Tanaman Nenas Berdasarkan Status Hara Tanah
Article Info   ABSTRACT
Published date:
17 Aug 2011
 
Potassium (K) is required in a large amount for plant growth and production of most fruit crops, including pineapple. However, excess application may decrease its growth and production. Therefore, fertilizer application must be site specific, based on soil nutrient status and plant requirements. The aims of the research were (1) to determine the soil K nutritional status of pineapple and (2) to determine the optimum dosage of  K fertilization for pineapple grown in Sawah Baru, Darmaga, Bogor.  The research was conducted using split plot randomized block design with five soil K status as main plots i.e. 0, 70, 140, 210, and 280 kg K2O ha-1 representing status levels of very low, low, moderate, high, and very high, respectively. The sub plot was dosage of  K fertilizer i.e. 0, 200, 400, 600, and 800 kg K2O ha-1. The result of the research showed   that plant growth and production of pineapple were improved by soil K nutrient status and dosage of K application.  The  level  of  soil K  nutrient  availability  was  classified  into  low  (50 ppm K2O). Potassium fertilizer is recommended for the soil with low  soil K status of 634 kg K2O ha-1.    Keywords: Ananas comosus, fertilization, potassium, soil nutrient status
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