Respon Bibit Kopi Robusta (Coffea canephora) Terhadap Pemberian KNO3 dan Ekstrak Bawang Merah

Damayanti, Rinta Eka (2024) Respon Bibit Kopi Robusta (Coffea canephora) Terhadap Pemberian KNO3 dan Ekstrak Bawang Merah. Undergraduate thesis, Politeknik Negeri Jember.

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Abstract

Coffee is one of the plantation commodities that has a high economic value among other plantation commodities and plays an important role as a source of foreign exchange. Seedling quality determines plant growth and productivity in nurseries. Optimal seedling growth can be obtained through a good nursery system. One way to accelerate growth is by applying KNO3 and shallot extract. KNO3 is one way to optimize the provision of nutrients. Giving shallot extract which contains auxin. This study aims to determine the effect of KNO3 and shallot extract on the growth of robusta coffee seedlings. This implementation was carried out in February - May 2024 at the Jember State Polytechnic Wirehouse using a Randomized Group Design (RGD) 3x3 factorial pattern with 3 replications. Factor 1 is the provision of KNO3 concentration consisting of 3 levels, namely control (P0) 0% (P1) 0.5% (P2) 1% and factor 2 is the provision of shallot extract concentration consisting of 3 levels, namely control (B0) 0% (B1) 50% (B2) 75%. Each experimental unit consists of 4 robusta coffee seedlings. Data were analyzed using a Randomized Group Design (RGD) with analysis of variance. If the treatment is significantly different, then further tests will be carried out with the Least Significant Difference at the 5% level (BNT). The results showed that the provision of KNO3 and shallot extract had an effect on the growth of Robusta coffee seedlings in the parameters of plant height, number of leaves, stem diameter, root length, wet weight and dry weight, the use of a combination of 1% KNO3 treatment with 50% shallot extract (P2B1) gave the best results on Robusta coffee seedlings.

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