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Journal : Jurnal Ilmiah Research Student

Zat Pengatur Tumbuh dan Pertumbuhan Bibit Karet (Hevea brasiliensis Muell.Arg) Asal Stum Mata Tidur Ulfa Pratiwi dan; Ida Nursanti
JURNAL ILMIAH RESEARCH STUDENT Vol. 1 No. 2 (2023): November
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jirs.v1i2.505

Abstract

Sleeping eye stems are grafting seedlings whose grafting eyes have not yet grown. The advantage of using sleeping eye stems is that the preparation time is easier and faster, the price is relatively cheaper and it is easy to transport. Sleeping eye stems have a high percentage of mortality. To accelerate the growth of roots and shoots, sleeping eye stum grafting can be given growth regulators (ZPT). This study aims to determine the response of rubber seedlings to the provision of Growth Regulators with different concentrations on the growth of rubber seedlings from sleeping eye stum. This study used a completely randomized design (CRD) and the treatment design was Atonik with 4 treatment levels including; A0: Without ZPT Atonik, A1: ZPT Atonik 1 ml l-1 water, A2: ZPT Atonic 2 ml l-1, A3: ZPT Atonic 3 ml l-1, A4: ZPT Atonik 4 ml l-1. Data were analyzed using analysis of variance, followed by Duncan Multiple Range Test (DNMRT) at 5% α level. The results showed that the application of ZPT Atonik gave different responses to each growth of rubber seedlings of sleeping eye stum. Concentration of ZPT Atonik 1 ml l-1 and 2 ml l-1 gives the best effect on the growth of rubber seedlings (shoot length, number of leaves and dry weight of roots).
PERTUMBUHAN BIBIT KAKAO (Theobroma cacao. L) DI MEDIA TANAM GAMBUT YANG DIBERI TANAH MINERAL DAN ZEOLIT” Ahdi Romadoni; Ida Nursanti
JURNAL ILMIAH RESEARCH STUDENT Vol. 1 No. 3 (2024): Januari
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jirs.v1i3.572

Abstract

Peat soil has a very low load-bearing capacity. Peat dries out non-reversibly, contains very low base cations and very high acid cations, very high organic C-C and very low nutrient levels. The addition of mineral soil to peat planting media will reduce the organic acids produced during the decomposition process. Zeolite in soil can improve soil conditions (physical, chemical and biological soil). This research aims to find out. The research aims to study the growth of cocoa seedlings when given mineral soil and zeolite in peat soil media. This research uses a Completely Randomized Design (RAL) with 2 factors. The first factor is the provision of ultisol soil (U) with 4 levels, namely: U0 = without application of ultisol soil, U1 = ultisol soil 15% by weight of the planting medium, U2 = ultisol soil 20% by weight of the planting medium, U3 = ultisol soil 25% by weight of the planting medium. second is Zeolite (Z) with 3 levels, namely: Z0 = without zeolite, Z1 = zeolite 100 g, Z2 = 200 g. Data were analyzed using analysis of variance, followed by Duncan's Multiple Range Test (DNMRT) at the α level of 5%. Research Results shows that the application of zeolite to peat media can significantly influence the growth of cocoa plants, especially the stem diameter.