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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia TERRA : Journal of Land Restoration
Sumardi Sumardi
University of Bengkulu
Agriculture, Biological Sciences & Forestry

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PEMBERIAN PUPUK KANDANG SEBAGAI PEMBENAH TANAH UNTUK PERTUMBUHAN DAN HASIL MELON (Cucumis melo L.) DI ULTISOL Eka Nurjanah; Sumardi Sumardi; Prasetyo Prasetyo
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 22, No 1 (2020)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.22.1.23-30

Abstract

[MANURE APPLICATION AS A SOIL AMENDMENT TO PROMOTE GROWTH AND YIELD OF MELON (Cucumis melo L.) IN ULTISOL]. The application of manure may overcome soil fertility problems in Ultisol triggered by low pH, high P retention, high content of Al and Fe, and low CEC. The objective of this study was to determine the optimum dose of different manures applied to promote the best growth and yield of melon. The study was conducted from February to May 2019 at the Experimental Plot of the Faculty of Agriculture, University of Bengkulu. Three different manures (chicken, cow, and goat manure) were applied at 5, 10, 15, and 20 tons/ha. These treatments were arranged in Completely Randomized Design with three replications. The results show that the enhancement in chlorophyll content (SPAD index) was highest in plots solely applied with 20 tons ha-1 manure, whereas application of manure even at 20 tons/ha had no effects on melon yield and its components. Manure types solely promoted plant height, maturity date, fruit diameter, and soluble solid content (Brix). Melon growth and yield were not affected by combined application of manure type and dose. These indicate that application of manure types irrespective of the amount applied failed to solve fertility problems in Ultisol where melon was grown.
PERTUMBUHAN DAN HASIL PADI SIRANTAU PADA PEMBERIAN BEBERAPA MACAM DAN DOSIS PUPUK KANDANG Ringki Putra Azalika; Sumardi Sumardi; Sukisno Sukisno
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 1 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.1.26-32

Abstract

Salah satu upaya peningkatan produksi padi adalah dengan pengembangan pertanian di lahan – lahan sub optimal yaitu dengan penanaman varietas padi yang toleran kekeringan seperti kultivar sirantau. Penelitian ini bertujuan untuk menentukan jenis dan dosis pupuk kandang yang optimum untuk pertumbuhan dan hasil padi sirantau. Penelitian telah dilaksanakan pada bulan Januari 2016 - Mei 2016 di Kebun Percobaan Fakultas Pertanian Universitas Bengkulu. Penelitian ini merupakan percobaan pot faktorial dua faktor, menggunakan rancangan percobaan RAL (Rancangan Acak Lengkap).  Faktor pertama adalah jenis pupuk kandang, yaitu Pupuk kandang Sapi, Pupuk kandang Kambing, Pupuk kandang Ayam. Faktor kedua adalah dosis pupuk kandang, yaitu 5 ton/ha, 10 ton/ha, 15 ton/ha, 20 ton/ha, dan 25 ton/ha,  masing – masing perlakuan diulang sebanyak 3 kali. Variabel yang diamati meliputi tinggi tanaman, jumlah anakan total, jumlah anakan produktif, panjang malai, jumlah bulir per malai, persentase bulir bernas, bobot 100 gabah kering, dan bobot gabah kering perumpun. Hasil penelitian menunjukkan bahwa jenis pupuk kandang memberikan pengaruh nyata terhadap variabel jumlah anakan total, jumlah anakan produktif dan bobot gabah kering per rumpun. Pupuk kandang ayam dengan dosis 10 ton/ha memberikan hasil padi terbaik dengan potensi hasil 123,13 g per rumpun (5,77 ton/ha).
PERTUMBUHAN DAN HASIL GALUR-GALUR F4 PADI RAWA PADA RAWA LEBAK Sumardi Sumardi; M. Chozin; Hermansyah Hermansyah
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 21, No 1 (2019)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.21.1.49-54

Abstract

[GROWTH AND YIELD OF F4 SWAMP RICE LINES ON LINE SWAMP]. Growth and yield of swamp rice are depending on the plant ability to adapt in swampy agro-ecosystem which characterized by several limiting factors. This study was addressed to evaluate the growth and yield characteristics of six lines of swamp rice bred for the development of high-yielding rice varieties best suited for swamp land production. Evaluation was conducted in a pot experiment using UBPR2, UBPR3,UBPR6, UBPR7, UBPR9, and UBPR10 as planting materials. These lines were the F4 generation derived from crosses involving local Bengkulu swamp rice varieties. Observations were made on 13 plant characteristics, dry matter accumulation,  leaf area ratio, specific leaf weight, net assimilation rate, plant height, productive tiller number, heading date, maturity date, panicle length, grain number per panicle, percent of filled grain, and plant yield (the grain weight per clump).  The collected data were subjected to analysis of variance and least significant difference test at 5% level.  Results indicated that all lines physiologically exhibited similar growth patterns, excepting the capability of accumulating dry matter at 40 dap. In this case, UBPR6 produced the highest dry matter accumulation (24.34 g). Based on the morphological performances, significant variations among the lines were observed on most of the observed characteristics, except on productive tiller number and panicle length UBPR10 was the line produced the tallest plant stature (160.72 cm), UBPR2 was the earliest flowering and maturing line (76,33 and 111 dap), whereas UBPR6 was the line produced the highest grain number per panicle (212,2), percent of filled grain (95%),  and plant yield (82.50 g per clump).
Application of a Dielectric Measurement Technique for Calculating Water Loss from Two Texture-contrasting Soils Grown with Upland Rice Bandi Hermawan; Pajrina Pajrina; Sumardi Sumardi; Indra Agustian
TERRA : Journal of Land Restoration Vol 1, No 1 (2018)
Publisher : Department of Soil Science, Faculty of Agriculture, University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.1.1.8-14

Abstract

Most of the water loss from the soil profile occurred through the evapotranspiration process especially when the plant covers were under maximum growth periods.  This study aimed to apply a technique of measuring a dielectric variable for calculating soil water content and crop water use in the coarse and medium textured soils grown with upland rice.  A couple of wires were inserted into the soil repacked in a 10-kg polybag grown with upland rice, the electrical impedance representing the dielectric value was measured using an instrument called the impedance meter.  The impedance values were converted into the soil water content using a nonlinear regression model of ? = a.ebZ where a and b were constants.  Results showed that the proposed technique of measuring the electrical impedance has successfully been applied to calculate the soil water content and the water use by upland rice grown in loamy sand and sandy loam soils.  Cumulative water loss from loamy sand was about 4 L plant-1 higher for the coarse loamy sand in the first 30 days of a measurement period, but about 10 L plant-1 higher for finer sandy loam on the 90th day of the rice growth period.  Higher biomass of upland rice in the sandy loam soil could increase the evapotranspiration rates and be the main reason for higher water use in this soil.
Co-Authors Bandi Hermawan Eka Nurjanah Hermansyah Hermansyah Indra Agustian M. Chozin Pajrina Pajrina Prasetyo Prasetyo Ringki Putra Azalika Sukisno Sukisno