scholarly journals Influence of stubble quality and degree of soil-stubble contact on N2O emission

2017 ◽  
Vol 63 (No. 7) ◽  
pp. 289-294
Author(s):  
Cosentino Vanina Rosa Noemí ◽  
Minervini Mariana G ◽  
Taboada Miguel A
Keyword(s):  
Pore Space ◽  
Threshold Value ◽  
Soil N ◽  
Mineral N ◽  
Randomized Design ◽  
N Release ◽  
Controlling Variables ◽  
Completely Randomized Design ◽  
Closed Chambers ◽  
Residue Position

The organic residue position and C/N ratio regulate decomposition rate and, therefore, nitrogen (N) release to the soil. The N<sub>2</sub>O emission from soil is produced by nitrification and denitrification processes. These processes are affected by the mineral N concentration, water filled pore space (WFPS) and soil temperature. The N<sub>2</sub>O emission from soils covered by corn and soybean residues has been little studied so far. The aim of the present study was to evaluate the C/N ratio of corn and soybean residues and their contact degree with the soil on soil N<sub>2</sub>O emissions. A greenhouse experiment was conducted with a completely randomized design and N<sub>2</sub>O emission was determined using closed chambers. The N<sub>2</sub>O emissions were affected by the residue position and not by its origin (soybean = corn). Treatments with residue on the surface had the highest N<sub>2</sub>O emissions at the beginning of the trial, while residue incorporation showed constant values of N<sub>2</sub>O emission during the experiment. Soil N<sub>2</sub>O emissions were explained by two controlling variables: the WFPS and the N-NO<sub>3</sub><sup>–</sup> soil concentration. The WFPS separated the emission values of N<sub>2</sub>O into two groups (threshold value near 77% WFPS). When the WFPS exceeded the threshold value, the emissions of N<sub>2</sub>O were partially explained by the concentration of N-NO<sub>3</sub><sup>–</sup> soil.

Soil N2O emissions from temperate cropland agroforestry and monoculture systems

2021 ◽  
Author(s):  
Guodong Shao ◽  
Guntars Martinson ◽  
Jie Luo ◽  
Xenia Bischel ◽  
Dan Niu ◽  
...  
Keyword(s):  
Western Europe ◽  
Temporal Dynamics ◽  
Pore Space ◽  
Tree Age ◽  
Soil Types ◽  
N2o Emissions ◽  
N Availability ◽  
Soil N ◽  
Mineral N ◽  
Climate Conditions

&lt;p&gt;Monoculture cropland is a major contributor to agriculture-related sources of N&lt;sub&gt;2&lt;/sub&gt;O emission, a potent greenhouse gas and an agent of ozone depletion. Cropland agroforestry has the potential to minimize deleterious environmental impacts. Presently, there is no systematic comparison of soil N&lt;sub&gt;2&lt;/sub&gt;O emission between cropland agroforestry (CAF) and monoculture systems (MC) in Western Europe. Our study aimed to (1) quantify the spatial-temporal dynamics of soil N&lt;sub&gt;2&lt;/sub&gt;O fluxes, and (2) determine their soil controlling factors in CAF and MC. We selected three sites with different soil types (Phaeozem, Cambisol, and Arenosol) in Germany. Each site has paired CAF and MC (agroforestry sites consisted of 12-m wide tree row and 48-m wide crop row and were established in 2007, 2008 and 2019 in these soil types, respectively). In each management system at each site, we had four replicate plots. In the CAF, we conducted measurements in the tree row and within the crop row at 1 m, 7 m, and 24 m from the tree row. We measured soil N&lt;sub&gt;2&lt;/sub&gt;O fluxes monthly over 2 years (March 2018&amp;#8210;February 2020) using static vented chambers method. Following gas sampling, we also measured soil temperature, water-filled pore space (WFPS), and mineral N (NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; and NO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt;) within the same day. Across all sites, soil moisture and N availability were major drivers of soil N&lt;sub&gt;2&lt;/sub&gt;O fluxes. Both CAF and MC were net sources of soil N&lt;sub&gt;2&lt;/sub&gt;O at all sites. At the site with Phaeozem soil, annual soil N&lt;sub&gt;2&lt;/sub&gt;O emissions from CAF in both years (1.84 &amp;#177; 0.35 and 1.17 &amp;#177; 0.30 kg N ha&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt; yr&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt;) were greater than MC (0.89 &amp;#177; 0.09 and 0.34 &amp;#177; 0.05 kg N ha&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt; yr&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt;) (&lt;em&gt;P&lt;/em&gt; = 0.03). At the site with Cambisol soil, annual soil N&lt;sub&gt;2&lt;/sub&gt;O emission did not differ between MC (0.49 &amp;#177; 0.07 kg N ha&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt; yr&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt;) and CAF (0.73 &amp;#177; 0.13 kg N ha&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt; yr&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt;) in 2018/2019 (&lt;em&gt;P&lt;/em&gt; = 0.20) whereas in 2019/2020 MC was 134% greater than CAF (2.92 &amp;#177; 0.45 and 1.25 &amp;#177; 0.08 kg N ha&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt; yr&lt;sup&gt;&amp;#8722;&lt;/sup&gt;&lt;sup&gt;1&lt;/sup&gt;, respectively; &lt;em&gt;P&lt;/em&gt; = 0.03). The inter-annual differences were largely related to crop types and to climate conditions. At the site with Arenosol soil, there was no difference between CAF and MC. Our results indicated that CAF may decrease, maintain and/or increase soil N&lt;sub&gt;2&lt;/sub&gt;O emissions compared to MC depending on tree age, soil characteristics, management and precipitation.&lt;/p&gt;

scholarly journals Nitrogen released from sago pulp waste and Gliricidia sepium pruning mixtures on a Dystrudept of Central Moluccas and its effect on the growth of maize

2022 ◽  
Vol 9 (2) ◽  
pp. 3341-3347
Author(s):  
June Annethe Putinella ◽  
Yulia Nuraini ◽  
Budi Prasetya
Keyword(s):  
Soil Fertility ◽  
Organic Material ◽  
Agricultural Sector ◽  
Agricultural Soils ◽  
Acid Soil ◽  
Gliricidia Sepium ◽  
Available Nitrogen ◽  
Mineral N ◽  
Randomized Design ◽  
Completely Randomized Design

The agricultural sector is the mainstay of the economy in Central Moluccas. However, most agricultural soils on the island have low soil fertility. One of the efforts that farmers can make to improve soil fertility is to apply organic matter, which is widely found in Central Moluccas. This study aimed at elucidating the effect of mixing high-quality organic material (Glicidia sepium pruning) with low-quality organic material (sago pulp waste) on the improvement of available nitrogen in an acid soil (Dystrudept) and growth of maize. Two experiments were carried out in a laboratory and a greenhouse. The compositions of the mixtures of sago pulp waste (A) and pruning of Gliricidia sepium (G) were A0 G100; A20G80; A40G60; A60G40; A80G20, and A100G0. Six treatments and one control (no application of residues) were arranged in a completely randomized design. The results showed that the application of the mixture of 20% and 80% of Gliricidia sepium pruning (A20G80) increased the cumulative amount of mineral N in the soil higher than that of the other organic material mixtures, which in turn improved maize growth.

scholarly journals Pattern of N Mineralization and Nutrient Uptake of Tithonia diversifolia and Saccharum officinarum Leaves in Sandy Loam Soil

2021 ◽  
Author(s):  
Yulfita Farni ◽  
Sugeng Prijono ◽  
Retno Suntari ◽  
Eko Handayanto
Keyword(s):  
Nutrient Uptake ◽  
N Mineralization ◽  
Sandy Loam ◽  
Saccharum Officinarum ◽  
Sandy Loam Soil ◽  
Tithonia Diversifolia ◽  
Randomized Design ◽  
N Release ◽  
Loam Soil ◽  
Completely Randomized Design

Background: This study aimed to determine the pattern of N mineralization of tithonia (Tithonia diversifolia) and sugarcane (Saccharum officinarum) leaves and assess the uptake of N nutrients in maize by giving T. diversifolia and S. officinarum leaves with different qualities on sandy loam soil. Methods: The research used a completely randomized design (CRD) with following treatment: T1 (100% T. diversifolia), T2 (100% S. officinarum), T3 (75% T. diversifolia: 25% S. officinarum), T4 (50% S. officinarum: 50% T. diversifolia), T5 (25% T. diversifolia leaves: 75% S. officinarum), T6 (without T. diversifolia and S. officinarum or control). Result: The results showed that the N mineralization pattern of the organic matter combination was significantly higher than the control for all observations. The amount of N mineral released in each treatment was T1 (54.58-529.7 mg/kg), T2 (41.80-381 mg/kg), T3 (47.69-473.6 mg/kg), T4 (46.70-424.0 mg/kg), T5 (70.69-378.9 mg/kg) and T6 (47.14-303.6 9 mg/kg). The sequence of cumulative N release during 12 weeks of incubation was T1 (529 mg/kg) greater than T3 (573.6 mg/kg) greater than T4 (424.0 mg/kg) greater than T2 (381 mg/kg) greater than T5 (378.9 mg/kg) greater than T6 (303.6 mg/kg). These results suggested that T. diversifolia and S. officinarum leaves significantly increased N nutrient uptake in maize by 125% to 144.54%.

scholarly journals Soil mineral N dynamics beneath mixtures of leaves from legume and fruit trees in Central Amazonian multi-strata agroforests

2007 ◽  
Vol 37 (3) ◽  
pp. 313-320 ◽  
Author(s):  
Carol Melanie Schwendener ◽  
Johannes Lehmann ◽  
Marco Rondon ◽  
Elisa Wandelli ◽  
Erick Fernandes
Keyword(s):  
N Mineralization ◽  
Dominant Factor ◽  
Soil N ◽  
Soil Mineral N ◽  
Residue Quality ◽  
Soil Mineral ◽  
Mineral N ◽  
N Dynamics ◽  
Soil N Mineralization ◽  
N Release

Long term applications of leguminous green mulch could increase mineralizable nitrogen (N) beneath cupuaçu trees produced on the infertile acidic Ultisols and Oxisols of the Amazon Basin. However, low quality standing cupuaçu litter could interfere with green mulch N release and soil N mineralization. This study compared mineral N, total N, and microbial biomass N beneath cupuaçu trees grown in two different agroforestry systems, north of Manaus, Brazil, following seven years of different green mulch application rates. To test for net interactions between green mulch and cupuaçu litter, dried gliricidia and inga leaves were mixed with senescent cupuaçu leaves, surface applied to an Oxisol soil, and incubated in a greenhouse for 162 days. Leaf decomposition, N release and soil N mineralization were periodically measured in the mixed species litter treatments and compared to single species applications. The effect of legume biomass and cupuaçu litter on soil mineral N was additive implying that recommendations for green mulch applications to cupuaçu trees can be based on N dynamics of individual green mulch species. Results demonstrated that residue quality, not quantity, was the dominant factor affecting the rate of N release from leaves and soil N mineralization in a controlled environment. In the field, complex N cycling and other factors, including soil fauna, roots, and microclimatic effects, had a stronger influence on available soil N than residue quality.

scholarly journals Maize growth in response to Azospirillum brasilense, Rhizobium tropici, molybdenum and nitrogen

2017 ◽  
Vol 21 (9) ◽  
pp. 623-627 ◽  
Author(s):  
Angelita A. C. Picazevicz ◽  
Jorge F. Kusdra ◽  
Andréia de L. Moreno
Keyword(s):  
Plant Growth ◽  
Azospirillum Brasilense ◽  
N Fertilization ◽  
Soil N ◽  
Rhizobium Tropici ◽  
Triple Interaction ◽  
Maize Growth ◽  
Seed Inoculation ◽  
Randomized Design ◽  
Completely Randomized Design

ABSTRACT The objective of this research was to evaluate the effect of Azospirillum brasilense, Rhizobium tropici, nitrogen (N) and molybdenum (Mo) fertilization on maize growth. The experiment was carried out in a greenhouse from October to November 2015, in a completely randomized design, in 2 x 2 x 2 x 5 factorial scheme, with 5 replicates, corresponding to the absence and presence of Azospirillum brasilense, Rhizobium tropici, N (30 kg ha-1) and five Mo doses (0, 7.5, 15.0, 22.5 and 30.0 g ha-1). The analyzed variables were: plant height, basal stem diameter, dry biomass of shoots, roots, total and N accumulated in the shoots. There was double or triple interaction between N fertilization, Azospirillum brasilense and Rhizobium tropici for the evaluated variables. However, isolated and/or combined effect of Mo was not observed. Seed inoculation with Azospirillum brasilense as well as their co-inoculation with Rhizobium tropici in the absence of N fertilization was efficient to increase plant growth. Soil N fertilization at sowing was less efficient in promoting plant growth than when it was combined with seed inoculation with Rhizobium tropici.

Herba Reudeuep With Modification of Heating In Virgin Cocanut Oil

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Wahyuzan Wahyuzan ◽  
Lukmanul Hakim ◽  
Rahmat Afrizal ◽  
Asmeri Lamona ◽  
Khairuni Khairuni ◽  
...  
Keyword(s):  
Modern Medicine ◽  
Heating Time ◽  
Agricultural Product ◽  
Average Yield ◽  
Herbal Products ◽  
The Public ◽  
Randomized Design ◽  
Herbal Plants ◽  
Medicinal Properties ◽  
Completely Randomized Design

Traditional medicine in Indonesia has been known by the public before formal health services using modern medicine. Indonesia has many type of herbal plants which have medicinal properties including dadap (Erythrina orientalis). This study aims to utilized dadap herbal liniment by modifying heating in Vigin Cocanut Oil. The study conducted in the laboratory of Agricultural Product Processing using a Factorial Completely Randomized Design (CRD). The first factor is the addition of 250 ml (M1), 375 ml (m2), and 400 ml (M3) Virgin Cocanut Oil treatment. The second factor is the heating tim of 5 minutes (L1), 10 minutes (L2), and 15 minutes (L3). Observation variable consisted of yield, Specific gravity, and organoleptic test of aroma and colored. The result showed an average yield of 87.70-91.88%. The highest yield was found in the treatment of adding 400 ml Virgin Cocanut Oil and 15 minutes of heating time. The highest type of weight was found in the treatment of addition of 325 ml Virgin Cocanut Oil and 5 minutes heating time. Based on the organoleptic scent test, the everage penalist gives a like answer. Organoleptic colors of reudeuep herbal products is according to SNI number 06-23-2006.

The Utilization of Red Dragon Fruit Peel Extract (Hylocereus costaricencis) As A Natural Colorant of Dried Noodle

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Silaturahmi Silaturahmi ◽  
Zaidiyah Zaidiyah ◽  
Tengku Mia Rahmiati
Keyword(s):  
Product Diversification ◽  
Fruit Peel ◽  
Physical Quality ◽  
Natural Colorant ◽  
Randomized Design ◽  
Solid Loss ◽  
Dragon Fruit ◽  
Completely Randomized Design ◽  
Peel Extract

The use of colorants in the dried noodle manufactures is an effort of product diversification. Besides of being used as a natural coloring agent, this peel extract is also used to improve nutritional value of the expected product. The purpose of this study was to determine the effect of red dragon fruit peel extract on the physical quality of dried noodle.  The study was conducted by using Completely Randomized Design (CRD) method with one factor, namely concentration of red dragon fruit peel extract (N1 = 10 ml, N2 = 15 ml, N3 = 20 ml, N4 = 25 ml, N5 = 30 ml).  The observations of its physical quality consisted of water absorption, solid loss during cooking, and organoleptic tests (aroma and color).  The best quality of dried noodle was obtained by using 30 ml red dragon fruit peel extract (N5) with physical properties, namely DSA levels of 351.92%, solid loss during cooking 4.78%, aroma 3.79 (like) and color 3.89 (like).

PEMANFAATAN KARBON AKTIF UNTUK MENGURANGI CEMARAN FORMALIN PADA IKAN ASIN JAMBAL ROTI

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Erma Ayu Nurcahyani ◽  
Merkuria Karyantina ◽  
Nanik Suhartatik
Keyword(s):  
Active Carbon ◽  
Food Preservation ◽  
Hazardous Substances ◽  
Salted Fish ◽  
Hazardous Chemical ◽  
The People ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Safe Food ◽  
Chemical Material

Ikan asin adalah metode untuk pengawetan makanan menggunakan kombinasi penggaraman dan pengeringan matahari. Di kalangan masyarakat, pembuatan ikan asin banyak menggunakan bahan kimia berbahaya seperti formalin. Penambahan bahan berbahaya mempengaruhi kualitas terutama keamanan. Makanan yang aman didefinisikan sebagai makanan yang terbebas dari cemaran biologi, kimia, mikrobiologi, yang dapat mempengaruhi kesehatan. Karbon aktif diduga bersifat polar yang mampu mengadsorpsi formalin. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian karbon aktif dalam mengurangi cemaran formalin pada “jambal roti”. Rancangan percobaan yang digunakan untuk percobaan yaitu Rancangan Acak Lengkap (RAL) 2 faktorial, dengan faktor pertama yaitu konsentrasi karbon aktif 0, 3, dan 6% serta perlakuan kedua yaitu lama perebusan selama 5, 10, dan 15 menit. Penelitian ini dimulai dari pembuatan “jambal roti” dengan penambahan formalin dan perebusan dengan karbon aktif kemudian dianalisis uji kadar formalin, NaCl, protein, dan air. Hasil penelitian menunjukkan bahwa konsentrasi karbon aktif dan lama perebusan memberikan pengaruh yang signifikan pada kualitas jambal roti. Semakin tinggi konsentrasi karbon aktif dan lama perebusan maka semakin berkurangnya kadar formalin pada jambal roti. Hasil terbaik penelitian ini adalah karbon aktif 6% dan lama perebusan 15 menit. Menghasilkan formalin 3.21 ppm, NaCl 9.40%, protein 42.00%, dan air 30.02%. Kata kunci: Karbon Aktif, Formalin, Jambal Roti, Lama Perebusan. ABSTRACT                 Salted fish was a method for food preservation using combination of salting and sun drying. Among the people, the manufacture of salted fish use hazardous chemical material such as formaldehyde. The addition of hazardous substances affects the quality especially the safety. Safe food define as food that free from biological, chemical, microbiological contaminants that can affect health. Active carbon suspected to be polar which able to adsorb formaldehyde. The purpose of this research was to determine the influence of active carbon in reducing formaldehyde in salted fish “jambal roti”. The research used completely randomized design (CRD) with 2 factors, the first factor was the concentration of active carbon 0, 3, and 6% and the second was the boiling time (for 5, 10, and 15 min). This research was started from making “jambal roti” with the addition of formaldehyde and boiling with active carbon then analyzed for formaldehyde content, NaCl, protein, and moisture. The result showed that the concentration of active carbon and boiling time had a significant effect in quality salted fish “jambal roti”. The higher the concentration of active carbon and boiling time the more formaldehyde in “jambal roti” were removed. The best results of the research was 6% active carbon and 15 min of boiling time. Resulting 3.21 ppm of formaldehyde, 9.40% of NaCl, 42.00% of protein, and 30.02% of moisture. Keywords: Active Carbon, Formaldehyde, Jambal Roti, Boiling Time

KARAKTERISTIK BROWNIES KUKUS TEPUNG JEWAWUT (Setarica italica) DAN TEPUNG MAIZENA DENGAN PENGARUH LAMA PROSES PENGUKUSAN

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Bernaulli Putri Mulyanto ◽  
Yustina Wuri Wulandari ◽  
Akhmad Mustofa
Keyword(s):  
Moisture Content ◽  
Protein Content ◽  
Ash Content ◽  
Total Sugar ◽  
Gluten Free ◽  
Corn Flour ◽  
Process Duration ◽  
Flour Protein ◽  
Randomized Design ◽  
Completely Randomized Design

      Brownies merupakan cake coklat yang terbuat dari tepung terigu, lemak, telur, gula pasir dan coklat. Metode pemasakan brownies ada dua yaitu pemanggangan dan pengukusan. Penelitian ini menggunakan tepung jewawut dan tepung maizena agar dihasilkan brownies kukus bebas gluten. Penelitian ini bertujuan untuk mengetahui formulasi tepung yang memiliki kadar protein tertinggi pada brownies dan untuk mengetahui lama pengukusan yang optimal sehingga menghasilkan brownies kukus tepung jewawut dan tepung jagung yang paling disukai. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua faktorial yaitu faktor pertama ratio tepung jewawut dan tepung jagung (50:50, 40:60 dan 30:70), sedangkan faktor kedua lama pengukusan (30 menit, 40 menit dan 50 menit). Hasil penelitian menunjukkan Brownies kukus tepung jewawut dan tepung jagung dengan ratio 50:50 dan lama pengukusan 50 menit merupakan ratio yang terbaik karena memiliki kadar protein paling tinggi yaitu 5.828%.  Pada perlakuan ini menghasilkan 19.967% kadar air, 1.585% kadar abu, 1.786% gula total, serta uji organoleptik terhadap warna 3.590 (coklat gelap), tekstur 3.340 (lembut), flavor jewawut 2.855 (sedikit terasa) dan kesukaan keseluruhan 3.285 (disukai). Kata kunci : Brownies, tepung jewawut, tepung jagung, kadar protein.  ABSTRACT      Brownies is chocolate cakes made from flour, fat, eggs, sugar and chocolate. There are two methods of cooking brownies namely roasting and steaming. This study uses millet flour and maizena flour to produced gluten free steamed brownies. This study aims to determine the best of flour formulated which has highest protein content in steamed brownies and to knew the optimal steaming time that produced the most favored  of  steamed brownies millet flour and  corn flour. This study used a completely randomized design (CRD) with two factorials, the first factor is ratio of millet flour and corn flour (50:50, 40:60 and 30:70), while the second factor was the duration of steaming process (30, 40 and 50 minutes). The result of the study showed steamed flour of millet flour and corn flour with ratio of 50:50 and with steamed process duration 50 minutes is the best ratio because it had the highest protein content of 5.828%.  In this treatment yielded 19.97% moisture content, 1.585% ash content, 1.786% total sugar and organoleptic test is 3.590 (dark chocolate) colors, 3.340 (soft) texture, 2.855 (slightly felt) millet flavors and 3.285 (preferred) overall preferences. Keywords :  Brownies, millet flour, corn flour, protein content

Pengaruh Pemberian Moringa oleifera Terhadap Kuantitas dan Kualitas Semen Sapi Peranakan Ongole

2020 ◽  
Vol 7 (2) ◽  
pp. 119
Author(s):  
Lukman Affandhy ◽  
Muchamad Luthfi ◽  
Dian Ratnawati ◽  
Frediansyah Firdaus
Keyword(s):  
Data Analysis ◽  
Analysis Of Variance ◽  
Research Method ◽  
Moringa Oleifera ◽  
The Third ◽  
Randomized Design ◽  
Leaf Powder ◽  
Completely Randomized Design ◽  
Second Period

ABSTRAK  Penelitian bertujuan untuk mengetahui pengaruh pemberian bubuk daun Moringa oleifera (MO) terhadap kuantitas dan kualitas semen sapi peranakan ongole (PO). Metode penelitian menggunakan percobaan lapang dengan rancangan acak lengkap dengan tiga perlakuan pemberian MO sebesar 0 kg/ekor/hari (P1); 0,05 kg/ekor/hari (P2) dan 0,1 kg/ekor/hari (P3). Analsis data menggunakan one way analysis of variance. Masing-masing perlakuan terdiri atas empat ekor dengan tiga periode pengamatan sebagai ulangan, yaitu periode pertama dan ketiga tanpa MO, dan periode kedua diberikan MO pada P2 dan P3. Hasil penelitian menunjukan bahwa volume dan pH semen perlakuan P1, P2 dan P3 tidak berbeda semua periode pengamatan. Motilitas massa spermatozoa P2 dan P3 periode kedua dan ketiga menunjukan nilai +++ berbeda nyata (P<0,05) dibandingkan dengan P1 (++); motilitas individu  perlakuan P1 menunjukkan nilai terendah 60,56±2,94 % (P<0,05) dibandingkan P2 dan P3 pada periode kedua dan ketiga (75,50±2,29 dan 72,50±2,34%). Konsentrasi spermatozoa P2 dan P3 periode kedua dan ketiga menunjukkan rata-rata  >1.350 juta/ml berbeda nyata (P<0,05) daripada P1 (876±152juta/ml), sedangkan total spermatozoa motil menunjukkan nilai tertinggi 5.647±829 juta/ml pada P3 periode kedua.Viabilitas spermatozoa P2 dan P3 menunjukkan nilai >88-89 % beda nyata (P<0,05) daripada P1 (<84 %) pada periode kedua dan ketiga, sedangkan nilai abnormalitas spermatozoa yang terbaik adalah P2 sebesar 4,30% pada periode kedua dan P3 sebesar 5,33% pada periode ketiga. Disimpulkan pemberian bubuk daun MO dengan dosis 0,1 kg/ekor/hari dapat memperbaiki kuantitas dan kualitas semen (viabilitas dan total spermatozoa motil) sapi pejantan PO.Kata kunci:  kuantitas dan kualitas semen, Moringa oleifera, sapi pejantan ABSTRACTThe research aimed to determine the effect of Moringa oleifera (MO) leaf powder on the quantity and quality of semen of ongole crossbreed. The research method used was a field experiment with a completely randomized design with three treatments giving MO of 0 kg/head/day (P1); 0.05 kg/head/day (P2) and 0.1 kg/head/day (P3). Each treatment consisted of four heads with three periods of observation as replications, namely the first and third periods without MO, and the second period was given MO on P2 and P3. Data analysis used a one-way analysis of variance. The results showed that the volume and pH of semen treated P1, P2, and P3 didn’t different in all observation periods. The second and third period spermatozoa mass motility of P2 and P3 showed that the value of +++ was significantly different (P<0.05) compared to P1 (++); Individual motility of P1 treatment showed the lowest value 60,56±2,94 % (P<0.05) compared to P2 and P3 in the second and third periods (75,50±2,29 and 72,50±2,34%). The second and third periods of P2 and P3 spermatozoa concentrations showed an average of >1,350 million/cc significantly different (P<0.05) than P1 (876±152 million/cc), while the total motile spermatozoa showed the highest value of 5,647±829 million/cc in the second period P3. The spermatozoa viability of P2 and P3 showed values >88-89% significantly different (P<0.05) than P1 (<84%) in the second and third periods, while the best spermatozoa abnormalities were P2 at 4.30% in the second period and P3 at 5.33% in the third period. It was concluded that the giving of MO leaf powder at a dose of 0,1 kg/head/day could improve the quantity and quality of semen (viability and total motile spermatozoa) of Ongole Crossbreed bulls. Keywords: bulls, Moringa oleifera, quantity and quality of semen

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