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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Prosiding SNATIF AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Pertanian Terapan SAINS TANAH - Journal of Soil Science and Agroclimatology JURNAL AGRI-TEK Akta Agrosia Makara Journal of Science Jurnal Ilmu-Ilmu Pertanian Agroscript: Journal of Applied Agricultural Sciences
Prapto Yudono
Fakultas Pertanian, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Education

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Pengaruh Dosis dan Jenis Aplikasi Boron terhadap Tingkat Layu Pentil (Cherelle wilt) Tanaman Kakao Sri Dewi HS, Endang; Yudono, Prapto; Putra, Eka Tarwaca Susila; Purwanto, Benito Heru; Toyip, Toyip
AGROSCRIPT: Journal of Applied Agricultural Sciences Vol 5 No 1 (2023): June
Publisher : Universitas Perjuangan Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36423/agroscript.v5i1.1219

Abstract

Cherelle wilt merupakan penyakit fisiologis pada tahap awal perkembangan buah kakao karena kegagalan perkembangan buah. Salah satu unsur yang diduga kuat menjadi penyebab adalah unsur boron yang ketersediannya sangat penting bagi tanaman karena berperan dalam perkembangan sel, metabolisme protein, asam amino, nitrat, lemak, karbohidrat, auksin dan fenol, fungsi membran, berperan dalam keberhasilan pembentukan bunga, pembuahan dan perkembangan buah. Tujuan penelitian untuk mengkaji dan meneliti tentang pengaruh boron terhadap layu pentil kakao. Penelitian dirancang menggunakan rancangan Randomized Complete Block Design (RCBD) dimana faktor A terdiri dari metode aplikasi pupuk yaitu lewat daun dan lewat tanah sedangkan faktor B adalah takaran pemberian boron yang terdiri dari tanpa pemberian pupuk , pemberian boron 1,5 g.pohon-1, 3 g. Pohon-1, 4,5 g.pohon-1 dan 6 g.pohon-1 setiap perlakuan diulang tiga kali, setiap ulangan terdiri dari 5 tanaman sehingga kombinasi perlakuan menjadi 2 x 5 x 3 x 5 = 150 tanaman. Parameter yang diamati adalah Boron total daun, viabilitas pollen, total pentil yang terbentuk, persentase pentil sehat, dan pentil layu. Hasil menunjukkan bahwa metode aplikasi pupuk boron berpengaruh terhadap layu pentil kakao. Metode aplikasi boron lewat daun dengan dosis 0, 4,5 dan 6 g.tanaman-1 memberikan nilai pentil layu yang lebih tinggi. Sedangkan metode aplikasi boron lewat daun dosis 1,5, dan 3 g.tanaman-1 serta metode aplikasi lewat tanah dosis 6 g.tanaman-1 memberikan persentase pentil sehat yang lebih tinggi. Metode aplikasi lewat daun dengan dosis 3 g.tanaman-1 adalah dosis maksimal yang mampu memberikan hasil tertinggi terhadap viabilitas pollen, jumlah buah, dan persentase pentil sehat.
Physiological activities of cocoa trees induced by soil and foliar applications of boron fertilizer Dewi HS, Endang Sri; Yudono, Prapto; Susilaputra, Eka Tarwaca; Purwanto, Benito Heru
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 20, No 1 (2023): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v20i1.64091

Abstract

This study investigates the impact of boron fertilizer on physiological activities of cocoa trees, specifically focusing on boron content, nitrogen content, nitrate reductase activity, chlorophyll content, and photosynthesis rate in cocoa plant leaves. This research was arranged in a randomized complete block design with two treatment factors, which were the type of boron fertilizer application (soil and foliar fertilizer), and the dose of boron fertilizer (1.5, 3, 4.5, and 6 g plant−1 with 0 g plant−1 as a control). Data were then analyzed for variance differences (ANOVA) with α = 5%, followed by the Tukey test, and contrast orthogonal for comparing treated and control plants. The results showed that the dose of boron fertilizer and the type of fertilizer application used have a significant effect on the physiological activity of the cocoa plant. The dose of boron with soil application affects physiological activity in a linear pattern where each additional dose of boron will increase the activity of nitrate reductase, chlorophyll content, and photosynthetic rate. The dose of boron with foliar application affects physiological activity in a quadratic pattern, where the dose of boron in the range of 3 g plant−1 is the optimum dose that gives maximum results on nitrate reductase activity, chlorophyll content, and photosynthetic rate in the cocoa leaves. Therefore, it is considered that the application of boron fertilizer at a dose of 3 g plants−1 with the foliar application is more efficient in increasing physiological activity compared to the dose of boron with soil application.
Co-Authors Abdul Syukur Adileksana, Cahyo Azis Purwantoro Bambang Djadmo Kertonegoro Bambang Hendro Sunarminto Bambang Hendro sunarminto Benito Heru Purwanto Dewi Hs, Endang Sri Didik Indradewa Eka Tarwaca Susila Putra Endang Sulistyaningsih Hidayat Pujisiswanto I Gusti Made Arya Parwata Nugrohotomo, Nugrohotomo Nurjanah, Uswatun Putra, Fajrin Pramana Rukmini Kusmarwiyah SEDYO HARTONO Shieddiq, Dja’far Susilaputra, Eka Tarwaca Suyono, A.T Syamsul Arifin Toyip Toyip Waluyo, dan Sriyanto Widyastuti, Ika Betty Wijoyo, Rachmanto Bambang Winarni, Marti Wuye Ria Andayani Y. B. Sumardiyono