scholarly journals The effect of differences between house length and placement zones inside the closed house on the utilization of broiler chicken feed protein in the dry season

2020 ◽  
Vol 30 (3) ◽  
pp. 225-236
Author(s):  
Arjanggi Ari Bimo ◽  
Teysar Adi Sarjana ◽  
Edjeng Suprijatna
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Block Design ◽  
Nitrogen Retention ◽  
Protein Digestibility ◽  
Dry Season ◽  
Randomized Block Design ◽  
Lower Protein ◽  
Feed Protein ◽  
Inlet Zone

The research aims to examine the effect of differences in house length and placement zones inside a closed house on the utilization of broiler chicken feed protein in the dry season. The research material is 600 broiler chickens (strain cobb) divided into 20 experimental units and 2 closed houses with a length of 60 m with a capacity of 11,000 and a length of 120 m with a capacity of 22,000. This research used a randomized block design with a split-plot pattern and two factors. The main plot is closed house with length 60 and 120 meters, the subplot is the zone placement of chicken which are divided into 4 zones: zone 1 is parallel to the inlet, zone 2 is measured at 1/4 of the house length, zone 3 is measured at 1/2 the house length, zone 4 is measured at 3/4 the house length from the inlet. The parameters observed were protein digestibility, the protein efficiency ratio (PER), and nitrogen retention (NR). Macroclimate, microclimate, and microclimatic ammonia observed as supporting data and an overview of the research conditions. Longer house and placement zone of chicken further from the inlet increase temperature, humidity, and microclimatic ammonia inside the closed house. The results showed an interaction between the house length and placement zone of chicken against NR. The housing length of 120 m and zone 4 was significantly (P≤0,05) having lower protein digestibility, PER, and NR values. Protein digestibility began to decrease significantly (P≤0,05) in zone 3, while PER and NR significantly decrease from zone 2. It concludes that longer closed house and placement zones further from the inlet decrease the ability of broilers to utilizing feed protein in the dry season.

scholarly journals PENGARUH MULTI NUTRIENT SAUCE (MNS) DENGAN DOSIS YANG BERBEDA DALAM RANSUM TERHADAP KECERNAAN PROTEIN KASAR DAN SERAT KASAR PADA DOMBA

2020 ◽  
Vol 4 (1) ◽  
pp. 14-20
Author(s):  
M Alvin Rifqi Fadilla, Erwanto, Muhtarudin, dan Agung Kusuma Wijaya
Keyword(s):  
Crude Protein ◽  
Block Design ◽  
Animal Husbandry ◽  
Protein Digestibility ◽  
Crude Fiber ◽  
Significance Level ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Department Faculty ◽  
Difference Test

The purpose of this research was to determine the effect of addition of Multinutrient Sauce (MNS) in the ration on digestibility of crude protein and crude fiber in sheep.  This research was conducted in May—July 2019 at the People's Farm of Kebagusan Village, Gedong Tataan District, Pesawaran Regency.  The digestibility analysis of crude protein and crude fiber was carried out at the Laboratory of Animal Nutrition and Feed, Animal Husbandry Department, Faculty of Agriculture, University of Lampung.  This study used a randomized block design (RBD) based on sheep body weight with six groups and three treatments, namely R0 (ration without MNS); R1 (R0 + MNS 5%); and R2 (R0 + MNS 10%).  The data obtained were analyzed using ANOVA at a 5% significance level or 1% significance, and continued with further test using Least Significant Difference Test (LSD) if there is significant results.  The results showed that the addition of 10% MNS in the ration had a significant effect (P<0.05) on increasing the digestibility of crude protein and crude fiber in sheep.   Keywords: multi nutrient sauce (MNS), digestibility of crude protein, digestibility of crude fiber, sheep.

scholarly journals The Effect of N in Organic + Inorganic Liquid Fertilizer on the Activity Ability and Antioxidant Properties of Tea Shoots (Camellia sinensis L. O. Kuntze) in the Rainy and Dry Season

Agrologia ◽  
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Zakarias Frans Mores Hukom
Keyword(s):  
Antioxidant Activity ◽  
Active Ingredient ◽  
Rainy Season ◽  
Block Design ◽  
Antioxidant Properties ◽  
Dry Season ◽  
Liquid Fertilizer ◽  
Nitrogen Levels ◽  
Randomized Block Design ◽  
Different Seasons

Antioxidant is a term related to the activity ability and properties of the active ingredient.  The higher the ability of the antioxidant activity of an active ingredient, the stronger its antioxidant properties are to ward off various free radical compounds due to oxidative stress. The activity ability and antioxidant properties of tea shoots often fluctuate with changing seasons.  This study investigated the effect giving nitrogen levels in organic + inorganic liquid fertilizers on the ability of activity and antioxidant properties of tea shoots in different seasons. The experimental design used was a over season complete randomized block design consisting of 5 levels of fertilization concentration in the rainy and dry seasons. The results showed that the application of organic + inorganic liquid fertilizers without the addition of N concentration in the dry season had a significant effect on the antioxidant activity of tea shoots by 88.14%, and 34.15% higher than control plants in the rainy season and 41.81% more. Height of control plants in the dry season. The IC50 value of tea shoots in the rainy season and dry season has very strong antioxidant properties where the order of the antioxidant properties of the control plants < all concentrations of adding N to organic + inorganic liquid fertilizers < concentration of organic + inorganic liquid fertilizers without the addition of N.Keywords: Ability Antioxidant Activity, Organic + Inorganic Liquid Fertilizer, Tea shoots, Antioxidant Properties.

scholarly journals Kajian Pemberian Pupuk Kandang Ayam Pedaging dan Pupuk Hayati terhadap Pertumbuhan dan Hasil Petsai (Brassica chinensis L.)

2020 ◽  
Vol 2 (2) ◽  
pp. 77-88
Author(s):  
Jhon Hardy Purba ◽  
Putu Sri Wahyuni ◽  
Irwan Febryan
Keyword(s):  
Linear Relationship ◽  
Broiler Chicken ◽  
Block Design ◽  
Dry Weight ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Randomized Block Design ◽  
Economic Weight ◽  
Four Levels ◽  
The Relationship

Abstract. This research aims to determine the effect of broiler manure doses and BiotamaxTM biofertilizers on growth and yield of Chinese cabbage in the Selat Village, Buleleng Regency, Bali from November - December 2018. The randomized block design (RBD) factorial, consisting of two factors was the experimental design used in this research. The first factor is the dose of broiler manure (A), composed of 3 levels, namely control (A0), a dose of 15 tons.ha-1 (A1), and 30 tons.ha-1 (A2). The second factor is the application frequency of biological fertilizers with four levels, namely control (B0) which was administered concurrently for seven days before planting at a dose of 0.09 g.plots-1. B1 with an administrative frequency of 7 and 14 days before and after planting (HST), respectively, with a dose of 0.045 g.plots-1. (B2) with a 3times administrative frequency of 7, 14, and 28 days before, after birth and after each dose of 0.03 g.plots-1 (B3). The results of the study, the frequency of giving BiotaMaxTM biological fertilizer at the same time, provided the heaviest oven-dry weight per crop, which was 9.39 g. The treatment of broiler chicken manure dose of 30 tons.ha-1 (A2), resulted in the best oven-dry weight canopy per plant at 9.26 g. The relationship between the dose of broiler chicken manure with canopy oven-dry weight per plant showed a linear relationship, namely y = 0.0608x + 7.2483 (R2 = 32.53). The best economic weight per hectare is obtained in the provision of 30 tons.ha-1 (A2) broiler manure, weighing 30.10 tons.ha-1. The relationship between the dose of broiler manure and economic weight per hectare shows a linear relationship, y = 0.3247x + 21.699 R² = 59.88%. The frequency of giving BiotaMaxTM biofertilizers at the same time is 7 days before planting at a dose of 0.09 g.plots-1 (B1) gave the heaviest economic weight per hectare, at 28.21 tons.ha-1. The combination of broiler chicken manure dose and the frequency of BiotaMaxTM biofertilizer gave no significant effect (p≥0.05) on the growth and yield of Chinese cabbage.Keywords: broiler manure, biofertilizer frequency, petsaiAbstrak. Penelitian yang bertujuan mengetahui pengaruh dosis pupuk kandang ayam pedaging dan pupuk hayati BiotamaxTM serta interaksinya terhadap pertumbuhan dan hasil petsai dilaksanakan di Desa Selat, Kabupaten Buleleng, Bali pada bulan November - Desember 2018. Rancangan percobaan yang digunakan adalah rancangan acak kelompok (RAK) faktorial, terdiri atas dua faktor. Faktor pertama adalah dosis pupuk kandang ayam pedaging (A), terdiri atas 3 tingkat, yaitu kontrol (A0), dosis 15 ton.ha-1 (A1), dan 30 ton.ha-1 (A2). Faktor ke dua adalah frekuensi pemberian pupuk hayati dengan empat tingkat, yaitu kontrol (B0), pemberian sekaligus yaitu 7 hari sebelum tanam dengan dosis 0,09 g.petak-1 (B1); frekuensi pemberian 2 kali yaitu 7 hari sebelum tanam dan 14 hari sesudah tanam (hst) dengan dosis setiap pemberian 0,045 g.petak-1 (B2); frekuensi pemberian 3 kali yaitu 7 hari sebelum tanam, 14 hst dan 28 hst dengan dosis setiap pemberian 0,03 g.petak-1(B3). Hasil penelitian, frekuensi pemberian pupuk hayati BiotaMaxTM sekaligus, memberikan berat kering oven tajuk per tanaman terberat, yaitu 9,39 g. Perlakuan dosis pupuk kandang ayam pedaging dosis 30 ton.ha-1 (A2), menghasilkan berat kering oven tajuk per tanaman terbaik yaitu 9,26 g. Hubungan antara dosis pupuk kandang ayam pedaging dengan berat kering oven tajuk per tanaman menunjukan hubungan linier, yaitu y = 0,0608x + 7,2483 (R2=32,53). Berat ekonomis per hektar terbaik didapatkan pada pemberian dosis pupuk kandang ayam pedaging 30 ton.ha-1 (A2), yaitu seberat 30,10 ton.ha-1. Hubungan antara dosis pupuk kandang ayam pedaging dan berat ekonomis per hektar menunjukan hubungan linier, yaitu y = 0,3247x + 21,699 R²=59,88%. Frekuensi pemberian pupuk hayati BiotaMaxTM sekaligus yaitu 7 hari sebelum tanam dengan dosis 0,09 g.petak-1 (B1) memberikan berat ekonomis per hektar terberat, yaitu 28,21 ton.ha-1. Kombinasi dosis pupuk kandang ayam pedaging dan frekuensi pemberian pupuk hayati BiotaMaxTM berpengaruh tidak nyata (p≥0,05) terhadap pertumbuhan dan hasil petsai.    Kata kunci: Pupuk Kandang Ayam Pedaging, Frekuensi Pupuk hayati, Petsai.

scholarly journals METHIONINE PLUS CYSTINE TO LYSINE RATIO IN DIETS FOR TAMBAQUI JUVENILES

2019 ◽  
Vol 32 (1) ◽  
pp. 243-250 ◽  
Author(s):  
Flávio Oliveira Souza ◽  
Marcos Antonio Delmondes Bomfim ◽  
Felipe Barbosa Ribeiro ◽  
Eduardo Arruda Teixeira Lanna ◽  
Thalles José Rêgo de Sousa ◽  
...  
Keyword(s):  
Deposition Rate ◽  
Feed Efficiency ◽  
Block Design ◽  
Nitrogen Retention ◽  
Feed Conversion ◽  
Retention Efficiency ◽  
Protein Deposition ◽  
Randomized Block Design ◽  
Body Fat Content ◽  
Quadratic Effects

ABSTRACT The objective of this study was to determine the appropriate ratio of methionine plus cystine to lysine in rations for tambaqui (Colossoma macropomum) juveniles, with initial weights of 0.28 ± 0.08 g and 0.94 ± 0.33 g. A randomized block design consisting of six treatments, five replicates in two blocks, and 20 fish per replicate was implemented. Six isolisinic (1.45%), isoenergetic, isophosphoric, and isocalcic diets, containing different ratios of methionine plus cystine to digestible lysine (50%, 55%, 60%, 65%, 70%, and 75%) were used. Performance and feed efficiency variables, including body composition (moisture, protein, and fat), daily protein deposition rate, daily fat deposition rate, and nitrogen retention efficiency, were evaluated. The specific growth rate and feed conversion presented quadratic effects, with maximum effects from the digestible methionine plus cystine to lysine ratio of 64.4% and 64.8%, respectively. The increase in digestible methionine plus cystine intake resulted in a linear reduction in body fat content with the elevation of the digestible methionine plus cystine to lysine ratio. The digestible methionine plus cystine to lysine ratio recommended in rations for tambaqui fingerlings is 64.8%.

PROTEIN DIGESTIBILITY, CALCIUM AND PHOSPHORUS RETENTION IN RATIONS USING GAMAL LEAF FLOUR AND CEKUTI LEAF FLOUR FOR TURKEY GROWER POULTRY

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Fadlu Muhammad Amrulloh ◽  
Istna Mangisah ◽  
Bambang Sukamto
Keyword(s):  
Crude Protein ◽  
Block Design ◽  
Protein Digestibility ◽  
Phosphorus Retention ◽  
Group 4 ◽  
Turkey Poults ◽  
Randomized Block Design ◽  
Body Weights ◽  
Calcium And Phosphorus ◽  
Group 2

This study aimed to determine the digestibility of crude protein, calcium and phosphorus retention in rations using gamal leaf and cekuti leaf flour on grower turkey poults. Animals used were 8 weeks old turkey, totaling 100 unsex. The study used a randomized block design (RBD) using 5 treatments and 4 groups. Grouping was based on body weights; group 1 has a weight of 725 - 849 grams, group 2 has a weight of 850 - 974 grams, group 3 has a weight of 975 - 1099 grams, group 4 has a weight of 1100 - 1224 grams, each group consisting of 25 turkeys. The treatments given include T0 = without any gamal and cekuti given, TI = giving rations with 5% gamal, T2 = giving rations with 10% gamal, T3 = giving ration with 5% of cekuti and T4 = givingration with 10% of cekuti. The data obtained were carried out by the F test and Duncan's multiple range with a level of 5%. The results showed that the use of gamal leaf flour and scruff on the ration for grower turkey had a significant effect (P˂0.05) on crude protein digestibility, calcium and phosphorus retention and in grower turkey. The conclusion is that as much of 5% gamal leaf flour can be used in turkey rations.

scholarly journals Digestible lysine and organic zinc for male broiler from 1 to 11 days of age: performance and body composition

2011 ◽  
Vol 40 (3) ◽  
pp. 602-608
Author(s):  
Messias Alves da Trindade Neto ◽  
Lilian Bernadete Namazu ◽  
Estela Kobashigawa ◽  
Paula Takeara ◽  
Daniella Carolina Zanardo Donato ◽  
...  
Keyword(s):  
Muscle Mass ◽  
Broiler Chickens ◽  
Zinc Concentration ◽  
Block Design ◽  
Metabolizable Energy ◽  
Experimental Unit ◽  
Linear Effect ◽  
Organic Zinc ◽  
Randomized Block Design ◽  
Apparent Metabolizable Energy

This study evaluated levels of digestible lysine and organic zinc for male Ross strain broilers from 1 to 11 days of age. It was used 1,050 chicks distributed in randomized block design, in 5 × 2 factorial scheme, with seven repetitions of 15 birds per experimental unit. The dietary concentrations of digestible lysine were 0.90; 1.00; 1.10; 1.20; and 1.40% combined with 43 and 253 ppm zinc chelate. The diets contained 2,965 ± 18 kcal/kg of apparent metabolizable energy (AME) and 21.48 ± 0.18% of CP. It was determined chemical composition, protein, lipid, mineral and water depositions on carcass and empty body. There was no interaction among the factors digestible lysine and organic zinc. Effect of zinc concentration increase was observed on greatest deposition of body fat, indicating that there is interference in lipid metabolism of the birds in the studied phase. The most pronounced effects resulted from the dietary inclusion of lysine. There was a linear effect on reconstituted body weight as a response to the increase of dietary lysine, which suggests equal or superior requirement to the greatest studied level. However, the deposition of water and protein on the carcass had a quadratic increase, characterizing higher muscle mass accumulation up to the levels 1.25 and 1.27 of this amino acid in the diet. Considering the studied strain, broiler chickens from the first to the 11th days of age require 1.28 ± 0.01% of digestible lysine, according to the deposition of muscle mass.

scholarly journals Energy sources and supplementation levels for beef heifers raised during the dry season

2010 ◽  
Vol 39 (11) ◽  
pp. 2494-2501 ◽  
Author(s):  
Victor Rezende Moreira Couto ◽  
Mário Fonseca Paulino ◽  
Edenio Detmann ◽  
Sebastião de Campos Valadares Filho ◽  
Maykel Franklin Lima Sales ◽  
...  
Keyword(s):  
Block Design ◽  
Dry Season ◽  
Daily Weight Gain ◽  
Control Treatment ◽  
Energy Sources ◽  
Productive Performance ◽  
Beef Heifers ◽  
Brachiaria Decumbens ◽  
Randomized Block Design ◽  
Mineral Mixture

This experiment aimed at evaluating the productive performance, intake and the apparent digestibility in the raising of beef heifers on Brachiaria decumbens Stapf. pastures under supplementation with starch or fibrous energy sources during the dry season. It was used 40 newly weaned heifers (20 Nellore and 20 crossbreed), at 8.5 months of age and 197.9 ± 3.74 kg initial weight. Two supplements were formulated: the first was corn meal- and soybean meal-based diet (high in starch) and the second was based on wheat meal (high in fiber), which were given at the quantities of 0.5 or 1.0 kg/animal/day, compared to the offer of only mineral mixture (control). The animals were distributed according to a complete randomized block design in a 2 × 2 + 1 factorial arrangement with two sources of energy and two levels of supplementation plus the control treatment; the genetic group was used as a measure of local control. The average daily weight gain was higher for the animals under supplementation than those fed only mineral mixture (0.198 vs. 0.077 kg/animal/day). Moreover, performance of the animals under supplementation with starch energy source was higher than those fed wheat meal-based supplement (0.232 vs. 0.163 kg/animal/day). The intake of pasture dry matter was lower for the group given the highest supplementation level. The supplementation of beef heifers under pasture makes it possible to improve the productive performance. Compared to wheat meal, the use of the corn/soybean mixture meal as the basis of multiple mixture improves the productive performance of the heifers.

scholarly journals PSXIV-10 Evaluation of an alternative to sodium monensin use in Nellore cattle finished on pasture with high-intake supplementation

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 439-440
Author(s):  
Ivanna M Oliveira ◽  
Maxwelder S Soares ◽  
Hugo A S Issa ◽  
Luiz F Costa e Silva ◽  
Anne Koontz ◽  
...  
Keyword(s):  
Block Design ◽  
Average Daily Gain ◽  
Daily Intake ◽  
Optimal Growth ◽  
Dry Season ◽  
High Intake ◽  
Randomized Block Design ◽  
Nellore Cattle ◽  
Daily Gain ◽  
Supplement Intake

Abstract The objective was to evaluate the effects of Alltech® Advantage Confinamento (a proprietary blend of trace minerals and yeast) on performance and carcass traits of Nellore cattle finished with high-intake supplementation during the dry season. Fifty-two Nellore bulls [526 ± 5.71 kg of body weight (BW); age of 28 mo old] were distributed in a randomized block design (block = BW). Four animals were slaughtered at the beginning of the experiment to estimate the initial hot carcass weight (HCW). The remaining animals were divided into two treatments: ad libitum supplementation (estimated daily intake = 20 g/kg BW; crude protein = 14%; total digestible nutrients = 74%) with sodium monensin or Advantage Confinamento (29.9 mg or 3 g/kg of dry matter of supplement, respectively). The animals were evaluated for 112 days (28 days of adaptation and three periods of 28 days; June to October, 2018). The experimental area was divided into 12 paddocks (one ha each; Brachiaria brizantha cv. Marandu). Each paddock had four automatic feeders (Intergado®) and two animals per treatment. The feeders allowed the evaluation of individual supplement intake on pasture. There was no difference between monensin and Advantage Confinamento for final BW (641 vs 646 kg, P = 0.6120), average daily gain (1.04 vs 1.09 kg, P = 0.5383), carcass gain (0.781 vs 0.815 kg/day, P = 0.5101), final HCW (380 vs 384 kg, P = 0.5421) and dressing percentage (59.4 vs 59.5 %, P = 0.8208). In conclusion, Advantage Confinamento provided support for optimal growth performance equal to the use of sodium monensin when Nellore bulls were finished with high-intake supplementation on pasture during the dry season.

scholarly journals Agroecosystem Management on Green Mustard Plants in Wetlands during Dry Season

2019 ◽  
Vol 7 (1) ◽  
pp. 41 ◽  
Author(s):  
Ilhamiyah Ilhamiyah ◽  
Salamiah Salamiah ◽  
Samharinto Samharinto ◽  
Hakimah Halim
Keyword(s):  
Water Hyacinth ◽  
Block Design ◽  
Organic Fertilizer ◽  
Dry Season ◽  
Chicken Manure ◽  
Cost Ratio ◽  
Recommended Dosage ◽  
Arthropod Diversity ◽  
Randomized Block Design ◽  
Agroecosystem Management

This research aimed to find a pattern of agroecosystem management that can increase arthropod diversity, production, and Return Cost Ratio (RCR) values in organic wetlands planted during the dry season.  This research was set in Randomized Block Design (RAK) with seven treatments and five repetitions, namely:  1) Intercropping  between green mustard  and basil, with chicken manure and without<em> </em><em>Bacillus thuringiensis</em>;  2) Intercropping between green mustard and basil with water hyacinth compost, and without <em>B. thuringiensis</em>;  3)  intercropping between green mustard and leek, given water hyacinth compost, and without application <em>B. thuringiensis</em>;  4)Intercropping between green mustard  and leek, given chicken manure, and without application <em>B. thuringiensis</em>;  5) Intercropping between green mustard and leek, given chicken manure, and given <em>B. thuringensis</em> application, doubled of recommended dosage; 6) Intercropping between green mustard and leek with chicken manure, and <em>B. thuringensis</em> application according to recommended dosage; 7) Monoculture of green mustard without organic fertilizer and without the application <em>B. thuringiensis.  </em>From this research, it was concluded that the pattern of agroecosystem management of green mustard that can increase arthropod diversity in organic wetlands planted during dry season was the intercropping treatment between green mustard with basil, together with chicken manure and without <em>B. thuringiensis</em>. Meanwhile, the pattern of agroecosystem management of green mustard that can increase the production of green mustard and RCR value on the organic wetlands planted in the dry season was the intercropping treatment between green mustard with leek, together with chicken manure, and without <em>B. thuringiensis</em>.

scholarly journals Carbon and carbon dioxide accumulation by marandu grass under nitrogen fertilization and irrigation

Revista CERES ◽  
2016 ◽  
Vol 63 (3) ◽  
pp. 387-393
Author(s):  
Elisângela Dupas ◽  
Salatiér Buzetti ◽  
Flávio Henrique Silveira Rabêlo ◽  
André Luís Sarto
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Rainy Season ◽  
Block Design ◽  
N Fertilization ◽  
Dry Season ◽  
Organic Matter Production ◽  
Randomized Block Design ◽  
Matter Production ◽  
N Rates

ABSTRACT Nitrogen (N) is the most limiting nutrient for growth of forage grasses, especially in conditions of low water availability. Therefore, it is important to evaluate the effect of N fertilization and irrigation on the accumulation of carbon (C) and carbon dioxide (CO2) by marandu grass in the Cerrado Paulista, in the rainy and dry seasons. Experiments were conducted to evaluate N fertilization in each season, with and without irrigation. Five N rates were used (0, 50, 100, 150 and 200 kg ha-1 per cutting), using urea as N source, totaling 0, 300, 600, 900 and 1200 kg ha-1 in the rainy season and 0, 100, 200, 300 and 400 kg ha-1 in the dry season. The experiments were arranged in a split-plot randomized block design. There was no significant interaction (p > 0.05) between N and time of fertilization in the irrigated experiment. However, N promoted a quadratic effect in organic matter production (OMP), accumulation of C and CO2 by marandu grass, while there was no influence of the seasons. In the non-irrigated experiment, the interaction between N rates and seasons was significant (p < 0.05) only for the rainy season. Organic matter production and C and CO2 accumulation was greater in the rainy season than in the dry season. Irrigation provided increases of approximately 20% in C and CO2 accumulation. The use of N and irrigation increases the accumulation of C and CO2 by marandu grass, and this increase is higher during the rainy season.

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