Respon Pertumbuhan Tanaman Cengkeh (Syzygium aromaticum (L.) Merr. Perr.) dengan Aplikasi Pupuk Organik-Anorganik dan Triakontanol

Abstract

Application of right dosage of fertilizer and concentration of plant growth regulator are supporting factor of clove growth. This study was aimed to obtain the best combination of organic-inorganic fertilizer, the best triacontanol concentration and both interactions for increasing clove growth. This study used a Randomized Complete Block Design (RCBD) with two factors. The first factor was the organic-inorganic fertilizer dosage package that consisted of 6 levels, i.e no fertilizer, 100% recommended dosage of inorganic fertilizer (r.d.i.f), 25% recommended dosage of organic fertilizer (r.d.o.f) + 75% r.d.i.f, 50% r.d.o.f + 50% r.d.i.f, 75% r.d.o.f + 25% r.d.i.f, 100% r.d.o.f. The second factor was the concentration of triacontanol that consisted of 3 levels, i.e no triacontanol, 2 mg L-1 and 4 mg L-1. The results showed that the application of 25% r.d.o.f + 75% r.d.i.f produced the best clove growth, but it was not significantly different from the combination treatment of the two other types of fertilizer as indicated by the greatest improvement on stem diameter, branches number, leaf area, chlorophyll a, chlorophyll b, total chlorophyll and carotenoids. Clove plants did not respond to the application of triacontanol at a concentration of 2 mg L-1, but gave a negative response to the application of triacontanol 4 mg L-1 on the plant height and leaf area variables. The interaction of the two factors did not have significant effects on all variables.
 Keywords: chlorophyll, morphology, nutrient dynamics, physiology, vegetative growth

Fruit Set dan Daya Simpan Buah Tanaman Cabai Rawit (Capsicum frutescens L.) Akibat Pemberian Paklobutrazol dan Pupuk Organik Cair Buah Pisang

“…Paklobutrazol yang diberikan pada tanaman dapat meningkatkan klorofil yang terdapat pada daun sehingga fotosintesis dan asimilat juga meningkat serta produktivitas dari tanaman turut meningkat (Cahyani et al, 2022;Launuru et al, 2020;Ningsih & Rahmawati, 2017;Runtunuwu et al, 2016). Paklobutrazol merupakan zat pengatur tumbuh yang mampu menghambat biosintesis giberelin sehingga pertumbuhan vegetatif terhambat, tetapi pertumbuhan generatif tidak terhambat, nutrisi dan energi tanaman diarahkan ke pertumbuhan generatif yang lebih cepat.…”