scholarly journals Quality of silage produced from intercropped corn RR and soybeans RR

2019 ◽  
Vol 35 (6) ◽  
Author(s):  
Isabella Sichierski Cardoso ◽  
Adriano Jakelaitis ◽  
Karolyna Oliveira Marques ◽  
Katia Cylene Guimarães ◽  
Leandro Spíndola Pereira
Keyword(s):  
Block Design ◽  
Grain Filling ◽  
Experimental Period ◽  
Neutral Detergent Fiber ◽  
Double Row ◽  
Average Temperature ◽  
Randomized Block Design ◽  
Secondary Factor ◽  
Fertilization System

The objective of this study was to produce silage from intercropped RR glyphosate tolerant corn (RR - Roundup Ready) and RR soybeans under Brazilian Cerrado conditions. The research was carried out in off-season between February and June 2015, in Rio Verde, Goiás (Brazil). In the experimental period the rainfall was 865 mm and the average temperature of 23.7°C. Two trials were performed. The first had corn rows spaced in 1 m with a row of soybeans in the interrow. The second had double corn rows interspersed with one row of soybeans, all spaced in 0.50 m. In both trials, we used a randomized block design, in a 2x2+3 factorial scheme, with four replications. Primary factor consisted of two types of pre-sowing fertilization: one only in corn rows and the other over the total area. The secondary factor corresponded to two soybean varieties: medium and late cycle variety. In addition, three control treatments were made: one of corn and two of soybeans. The corn cutoff point was at the hard farinaceous stage when the milk line reaches half the grain, and in the sole crop soybean at the R5.5 final phase of grain filling. Silage was stored in PVC experimental silos for 60 days. The intercropped treatments, in both spatial arrangements, promoted increases in neutral detergent fiber and acid detergent fiber contents. Soybean monoculture presented high values of crude protein and ethereal extract. There were higher effluent losses in medium-cycle soybean variety silage when it was grown in single cropping. However, the lowest effluent losses were recorded for silages of medium-cycle soybean intercropped under a double row pre-sowing corn fertilization system. The soybeans mixed silages produced together with corn under off-season conditions did not yield satisfactory results.

scholarly journals Dry matter productivity and bromatological quality of ryegrass genotypes cultivated in southern Brazil

2021 ◽  
Vol 73 (1) ◽  
pp. 247-255
Author(s):  
A.R. Ramos ◽  
A. Zampar ◽  
A.W.L. Silva
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Block Design ◽  
Warm Season ◽  
Neutral Detergent Fiber ◽  
Short Term ◽  
Randomized Block Design ◽  
Feeding Systems

ABSTRACT The goal of this work was to assess the biomass production and bromatological quality of ryegrass genotypes in ten municipalities of the Western and North Plateau regions of the State of Santa Catarina, Brazil. The cultivars La Estanzuela 284 (diploid), Bar HQ, Barjumbo, INIA Escorpio, Potro, and Winter Star (tetraploids) were compared, distributed in a randomized block design, in which the municipalities constituted the blocks, with three replications. The cuts were performed when the plants reached 30cm, leaving a residue of 10cm. In three cuts, the cultivars Barjumbo and Bar HQ were the most productive, exceeding 4.6 t ha-1 of dry matter. In the places in which five cuts were performed, the production of these cultivars exceeded 7.3 t ha-1, placing them again ahead of the others. The average crude protein content in three cuts was greater than 25% in all cultivars. There was no difference between the genotypes in the content of neutral detergent fiber and total digestible nutrients. There was a significant correlation between quantitative and qualitative productive variables. The assessed cultivars represented good options for composing short-term or long-term winter-feeding systems, adjusted to the integration with annual crops or warm-season pastures.

scholarly journals PENGARUH KOMPOSISI PUPUK KS, ZA, DAN UREA, SERTA DOSIS N TERHADAP MUTU TEMBAKAU BESUKI NO

2020 ◽  
Vol 6 (3) ◽  
pp. 80
Author(s):  
MOCHAMMAD SHOLEH ◽  
ABDUL RACHMAN ◽  
MACHFUDZ MACHFUDZ
Keyword(s):  
Block Design ◽  
Leaf Thickness ◽  
Loamy Soil ◽  
Double Row ◽  
Organoleptic Quality ◽  
Randomized Block Design ◽  
Two Factors

<p><strong>Effect of KS, AS, and urea Compositions and N-dosages on quality of Besuki cigar tobacco</strong></p><p>The experiment was conducted on loamy soil at Ajung, Jember from June 1999 to March 2000. The objective was to study the effect of Kalk Salpetcr (KS), ammonium sulphates (AS), and urea compositions and N-dosages on quality of Besuki cigar tobacco. The treatment consisted of two factors i.e. fertilizer composition and N dosages. The first factor was 5 levels of fertilizer composition, i.e. KS; KS(50%)+AS (50%); AS; KS(50%)+urea (50%) and uea. The second factor was 3 level of N-dosages, i.e. 60, 90 and 120 kg N/ha. The treatments were arranged in factorially randomized block design with 3 replications. Planting space was double row (100+70) cm x 40 cm wiUi a population of 168 plants per plot. Results showed thai AS or urea as side dressing fertilizer was not significantly different from KS fertilizer on the percentage of warpper (dekblad) and binder (omblad) quality, leaf thickness, and burning capacity. But especially on organolcptic AS or urea as side dressing fertilizer decreased organoleptic quality, i.e. the taste was bitter and irritating, less aromatic, bad smell, ash color changed from white to black, and decreased ash resistance. All of those characteristics were not desirable in cigar factory. Based on organolcptic quality we suggest the following : (I) AS and urea should be used as a starter only not as side dressing fertilizer, (2) KS fertilizer still perform Ihe best result (3) recommended N-dosage was 60 kg N/ha.</p>

scholarly journals Evaluation of nutrient solution dose and harvest time on forage sorghum (Sorghum bicolor L. Moench) in hydroponic fodder system

2021 ◽  
Vol 888 (1) ◽  
pp. 012068
Author(s):  
R Sriagtula ◽  
I Martaguri ◽  
S Sowmen ◽  
Zurmiati
Keyword(s):  
Nutrient Solution ◽  
Block Design ◽  
Neutral Detergent Fiber ◽  
Single Factor ◽  
Randomized Block Design ◽  
Nitrogen Free Extract ◽  
Fiber Fractions ◽  
Sorghum Bicolor L ◽  
Nutrient Solutions

Abstract This study aims to evaluate the effects of adding nutrient solutions and different harvest ages to the productivity and quality of sorghum forage hydroponically. The study was conducted experimentally using a 3x3 factorial randomized block design with 5 groups. Factor A dose of commercial nutrient solution (0, 3, and 5 ml/l). Factor B is the age of harvest (7, 10, and 13 days). The observed variables were plant productivity, nutrient, fiber fraction, and Hydrogen cianide (HCN) content. The results showed that there was a very significant interaction (P<0.01) between the nutrient solution factor and the age of harvest on the content of dry matter (DM), crude fiber (CF), ether extract (EE), ash, and nitrogen free extract (NFE), while the single factor of harvest age had a very significant effect (P<0.01) reducing the content of DM, CP, EE, and NFE. There was no interaction between the addition of nutrient solution and age of harvest to the content of fiber fractions. A single factor in nutrient solution significantly increased (P<0.01) content of acid detergent fiber (ADF), neutral detergent fiber (NDF), cellulose, and lignin, but not hemicellulose. The conclusion is the addition of a nutrient solution to increase growth and fresh production, the content of CF, ash, ADF, NDF, cellulose, lignin and HCN, but a decrease in the content of DM, CP, EE, and NFE. The longer the harvest age will increase growth and fresh production, the content of CF, ash, ADF, cellulose, lignin and HCN, but reduce DM, CP, EE, and NFE.

scholarly journals PENGARUH JENIS PUPUK DASAR DAN SUSULAN TERHADAP PRODUKSI DAN MUTU TEMBAKAU CERUTU BESUKI

2020 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
ABDUL RACHMAN ◽  
M. SHOLEH ◽  
EDI PURLANI
Keyword(s):  
Nicotiana Tabacum ◽  
Block Design ◽  
Leaf Size ◽  
Production Quality ◽  
Quality Analysis ◽  
Double Row ◽  
Total N ◽  
Randomized Block Design ◽  
Chemical Content

<p>Penelitian pemupukan tembakau cerutu besuki telah dilakukan di Desa Mangaran, Kecamatan Jenggawah, Kabupaten Jember (30 m dpi) untuk mengetahui pengaruh jenis pupuk dasar dan pupuk susulan terhadap produksi dan mutu. Tembakau ditanam pada awal musim kemarau (disebut besnota), yaitu minggu ke 1 bulan Juli 2000. Lahan percobaan berjcnis tanah Aluvial dengan tekstur liat berkadar 44% liat, 20% debu, dan 46% pasir, 0.67% C-organik, 0.14% N total, 10.64 cmol/kg P tersedia, 0.45 cmol/kg K, 7.30 cmol/kg Ca, dan pH 6.62. Perlakuan disusun dalam rancangan acak kelompok faktorial, dengan 3 ulangan Faktor petama adalah perlakuan pupuk dasar (jenis pupuk NPK dan SP36 + urea), sedangkan faktor kedua adalah perlakuan jenis pupuk susulan (urea, CN, CN+CPN, CN+PN, dan CSN). Ukuran petak percobaan 10 m x 7 m , jarak tanam (110 cm i 90 cm) x 35 cm, dengan populasi 200 tanaman per petak dan varietas 11382 Hasil penelitian menunjukkan bahwa perlakuan pupuk dasar NPK tidak berbeda pengaruhnya dibanding dengan pupuk SP36+ urea terhadap hasil, ukuran, ketcbalan daun posisi KAK dan TNG, persentase daun pembalut-pembungkus dan kadar unsur hara daun. Namun perlakuan pupuk NPK menghasilkan daun KOS 3 lebih tipis, daya bakar daun KOS 1 dan KAK 3 yang lebih lama, nisbah K20/CaO yang lebih tinggi. Pupuk susulan CN i CPN dan CN + PN memberikan hasil dan kadar N daun yang lebih tinggi daripada perlakuan yang lain. Pupuk susulan tidak berpengaruh terhadap ukuran daun, ketebalan daun, daya bakar, persentase daun pembalul-pembungkus, kadar P2Oj. K20, dan CaO daun. Berdasarkan analisis kualitas semua pupuk altematif yang dicoba- kan, baik sebagai pupuk dasar maupun pupuk susulan, pupuk-pupuk tersebut dapat digunakan pada tembakau cerutu besuki. Selanjutnya, perlu dilakukan sosialisasi penggunaan pupuk altematif tersebut kepada petani.<br /><br />Kata kunci: pupuk, produksi, mutu, Nicotiana tabacum, tembakau cerutu<br /><br /></p><p><strong>ABSTRACT</strong></p><p>Effect ofbasalfetilizers and side dressingfetilizer on the production and quality of besuki cigar tobacco</p><p>The expeiment was conducted in Mangaran, Jenggawah Distict, Jember (at the altitude of 30 m). The objective was to study the effect of basal fetilizers and side dressing fetilizer on the production and quality of besuki cigar tobacco. Tobacco was planted in early dry season, in irst week of July 2000 (named as besnota tobacco). The soil was alluvial with clay texture (44% clay, 20% silt, and 46% sand). Other characteristics of the soil was 0.67% C-organic, 0.14% total-N, 10.64 cmol/kg available P, 0.45 cmol/kg available K, 7.30 cmol/kg Ca, and pH 6.62. The treatment consisted of two factors, i.e. basal dressing (NPK compound fetilizer and SP36 + urea) and side dressing (urea, CN, CN + CPN, CN + PN, and CSN). The treatments were arranged in a factoially randomized block design with 3 replications. Planting space was double row (110 cm + 90cm) x 35 cm, 200 plants per plot. Tobacco vaiety was H382. The results of the experiment showed that the effect of NPK fetilizer was not significantly different from SP36 + urea, on the yield, leaf size, thickness of KAK and TNG leaf positions, wrapper + binder precentagc and chemical content of the leaves. However, the tobacco crop received NPK fetilizer had positive characteistics, i.e. thinner leaves (KOS 3), longer buning duration (KOS 1 and KAK 3), higher K20/CaO ratio than SP36 + urea (reatment. CN + CPN and CN + PN as side dressing treatments gave yield and N content higher than other treatments. Side dressing treatments did not affect the leaf size, thickness, buning duration, wrappcr+binder percentage. P2Oj. KjO, and CaO, content of the leaves. However, based on the quality analysis the fertilizers tested either as basal dressing or as side dressing can be used as an altenative for besuki cigar tobacco fetilization. Futhermore, the use of these altenative fetilizers need to be socialized to the tobacco farmers.<br /><br />Keywords: Cigar tobacco, fetilizer, production, quality, Nicotiana tabacum</p>

Kualitas Semen Cair Kambing Boer Berbahan Pengencer Air Kelapa Muda Varietas Viridis Setelah Simpan Dingin

2019 ◽  
Vol 6 (1) ◽  
pp. 78
Author(s):  
Muhammad Ade Salim ◽  
Muhammad Nur Ihsan ◽  
Nur Isnaini ◽  
Trinil Susilawati
Keyword(s):  
Semen Quality ◽  
Block Design ◽  
Animal Husbandry ◽  
Egg Yolk ◽  
Coconut Water ◽  
Boer Goat ◽  
Randomized Block Design ◽  
Frozen Semen ◽  
Artificial Vagina

ABSTRAKAir kelapa muda varietas viridisdapat dijadikan pengencer aletrnatif semen cair bagi program IB di daerah minim sarana semen beku. Tujuan penelitian ini untuk menguji pengaruh penggunaan air kelapa muda viridissebagai bahan pengencer terhadap kualitas semen cair kambing Boer setelah didinginkan. Dilaksanakanselama 3 bulan di Laboratorium Fakultas Peternakan UBUnit SumberSekar,Malang. Metodenya yaitu eksperimen. Semen dari  3 pejantan Boer umur 3-5 tahun, dikoleksi seminggu sekali dengan VB. Air kelapa mudaviridis umur 5-7 bulan serta tris aminomethane sebagai kontrol. Didesain menggunakan Rancangan Acak Kelompok (RAK) dengan 2 perlakuan yaitu P0 (tris aminomethane + 10% KT) dan  P1 (air kelapa muda viridis + 10% KT) masing-masing diulang 10 kali. Data dianalisis dengan analisis Ragam (Anova) dengan software Genstat 18. Variabelnya yaitu motilitas individu, viabilitas dan abnormalitas. Hasil penelitian yaitu motilitas individu pada P1bertahan sampai 4 hari (40,5± 24,3%), viabilitas terbaik sampai hari ke-5 (42±24,6%), abnormalitas terendah di hari ke-7(1,31± 0,6). Kesimpulannya, Pengencer air kelapa muda viridis dapat mempertahankan kualitas semen cair kambing Boer selama 4 hari untuk motilitas dan 5 hari untuk viabilitas.Kata Kunci:pengencer, air kelapa, varietas viridisABSTRACTYoung viridis coconut water could be used as an alternative to liquid semen diluent for artificial insemination program in the area with limited facility for frozen semen production. This study evaluated the use of young coconut water as a diluent on liquid semen quality of Boer goat after cold storage. This study was carried out for 3 months at Sumber Sekar Laboratory, Faculty of Animal Husbandry, University of Brawijaya, Malang. The semen was collected from 3 Boer bucks aged at 3 to 5 years old. The semen collection was done once a week with the aid of artificial vagina. The diluents used were young Viridis coconut (5 to 7 months old) and tris aminomethane. The method used was an experiment in a randomized block design with 2 treatments and 10 replicates. The treatments used were T0: tris aminomethane + 10% egg yolk (control) and T1:  young Viridis coconut water + 10% egg yolk. Data were analyzed by analysis of variance using Genstat 18 software. The variables measured were sperm individual motility, viability, and abnormality. The results showed that the sperm individual motility in T1 survived up to 4 days (40.5± 24.3%), the best viability at 5 days (42.0±24.6%),  while the lowest abnormality at 7 days (1.31±0.6). It could be concluded that: 1. Tris aminomethane diluent has higher quality with the storage length up to 9 days, 2. Young Viridis coconut water diluent could preserve liquid semen quality of Boer goat up to 4 days for sperm motility and 5 days for sperm viability.Keywords: diluents, coconut water, viridis variety

Effect of Integrated Nutrient Management on Yield and Quality of Garlic cv. Yamuna Safed-3

2020 ◽  
Vol 7 (04) ◽  
Author(s):  
A B Priyanshu ◽  
M K Singh ◽  
Mukesh Kumar ◽  
Vipin Kumar ◽  
Sunil Malik ◽  
...  
Keyword(s):  
Nutrient Management ◽  
Block Design ◽  
Quality Parameters ◽  
Organic Fertilizers ◽  
Research Centre ◽  
Yield And Quality ◽  
Randomized Block Design ◽  
The Impact ◽  
Horticultural Research

An experiment was conducted at Horticultural Research Centre, SVP University of Agriculture and Technology, Meerut (UP) during Rabi season of 2018-19 to assess the impact of different INM doses on yield and quality parameters of garlic. A total of ten treatments consisting of combinations of inorganic fertilizers, organic fertilizers and bio-fertilizers like T1- (Control), T2RDF (100:50:50 kg NPK ha-1), T3-RDF + 20 kg sulphur + FYM 20 ton ha-1, T4- RDF + 20 kg sulphur + VC 4 ton ha-1, T5- 75% RDF + 40 kg sulphur + 5 ton FYM ha-1+ PSB 5 kg ha-1, T6-75% RDF + 40 kg sulphur + 2 ton VC + Azotobacter 5 kg ha-1, T7- 75% RDF + 40 kg sulphur + FYM 3 ton + VC 1 ton+ PSB 5 kg + Azotobacter 5kg ha-1, T8- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg ha-1, T9- 50% RDF + 40 kg sulphur + FYM5 ton + VC 2 ton+ Azotobacter 5 kg ha-1and T10- 50% RDF + 40 kg sulphur + FYM 5 ton + VC2 ton + PSB 5 kg + Azotobacter 5 kg ha-1 were used in Randomized Block Design and replicated thrice. Out of these an application of T7 (75% RDF + 40 kg sulphur + FYM3 ton + VC 1 ton ha-1 + PSB 5 kg + Azotobacter 5 kg ha-1) was found to be significantly superior in term of yield and attributing parameters of garlic.

scholarly journals Nutritional value of sorghum silages

2017 ◽  
Vol 39 (2) ◽  
pp. 137
Author(s):  
Marielly Maria Almeida Moura ◽  
Daniel Ananias de Assis Pires ◽  
Renê Ferreira Costa ◽  
Daniella Cangussú Tolentino ◽  
João Paulo Sampaio Rigueira ◽  
...  
Keyword(s):  
Crude Protein ◽  
Block Design ◽  
Significance Level ◽  
Dry Matter Digestibility ◽  
Randomized Block Design ◽  
Nutritional Characteristics ◽  
High Participation ◽  
Sorghum Genotypes

 This study aimed to evaluate the nutritional characteristics and quality of silages of five sorghum genotypes, namely: Volumax, AG2005E, Qualimax, BRS610 and AG2501. The study was conducted at the Experimental Farm Unimontes, in the municipality of Janaúba, state of Minas Gerais. The treatments were distributed in a randomized block design with four replicates. Data were tested by analysis of variance andmeans were compared by Scott-Knott test at a significance level of 5%. The pH values ranged from 3.93 and 4.10. Genotypes differed in all studied nutritional characteristics (p < 0.05). For the acid detergent fiber, differences were detected between the genotypes, AG2501 (35.66%), Volumax (34.89%), AG2005E (34.53%), Qualimax (32.39%) and BRS610 (33.60%). The high participation of lignin was verifiedin all genotypes except for Volumax (4.14%). All silages were within the recommended range 50-65% for in vitro dry matter digestibility and classified as having good quality, however only the AG2005E genotype met nitrogen requirements for microbial fermentation, with 7.06% crude protein. 

scholarly journals Lignification of the plant and seed quality of RR soybeans sprayed with herbicide glyphosate

Revista CERES ◽  
2013 ◽  
Vol 60 (2) ◽  
pp. 286-292
Author(s):  
Cristiane Fortes Gris ◽  
Edila Vilela de Resende Von Pinho ◽  
Maria Laene de Moreira Carvalho ◽  
Rafael Parreira Diniz ◽  
Thaís de Andrade
Keyword(s):  
Seed Quality ◽  
Lignin Content ◽  
Block Design ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Randomized Block Design ◽  
Physiological Quality ◽  
Hand Weeding ◽  
Herbicide Glyphosate

Differences in levels of lignin in the plant between conventional and transgenic cultivars RR has been reported by several authors, however, there are few studies evaluating the influence of spraying of glyphosate on the lignin in the plant and RR soybean seeds. The aim of this study was to evaluate the physiological quality of RR transgenic soybean seeds and the lignin contents of plants sprayed with the herbicide glyphosate. The assays were conducted both in greenhouse and field in the municipality of Lavras, MG, in the agricultural year 2007/08. The experiment was arranged in a splitplot design with four replicates, considering the treatments hand weeding and herbicide glyphosate as plots, and five RR soybean cultivars (BRS 245 RR, BRS 247 RR, Valiosa RR, Silvânia RR and Baliza RR) as splitplots. In the greenhouse, the cultivars tested were BRS 245 RR and Valiosa RR in a randomized block design with four replicates. The sprayings were carried out at stages V3, V7 and early R5 (3L/ha). The 1000 seed weight, mechanical injury, germination and germination velocity index, emergence velocity index, accelerated aging, electrical conductivity and water soaking seed test, lignin content in the seed coat, in the stem and legumes were determined. The spraying of glyphosate herbicide, in greenhouse and field, did not alter the physiological quality of seeds and the lignin contents in the plant.

scholarly journals Influence of vernalization and bulb size on the production of lily cut flowers and lily bulbs

2017 ◽  
Vol 38 (4Supl1) ◽  
pp. 2399 ◽  
Author(s):  
Diogo Brito de Almeida ◽  
José Geraldo Barbosa ◽  
José Antônio Saraiva Grossi ◽  
Fernando Luiz Finger ◽  
Joice Crescencio Heidemann
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Cut Flowers ◽  
Floral Buds ◽  
Randomized Block Design ◽  
Commercial Harvest ◽  
Physiological Phenomenon ◽  
Cold Chamber ◽  
The Impact

Exposure of bulbs to cold, a physiological phenomenon called vernalization, and bulb size are important factors in the production of lily bulbs and flowers. This study aimed to verify the influence of vernalization of bulbs on flowering cut lily plants, as well as the impact of size and shape of harvest on the production and quality of flowers and bulbs. In turn, the way the stems of the plants used for cut-flower production are cropped is of higher importance for the production of new flower bulbs. In this sense, the experiment was conducted in Viçosa, MG, in a greenhouse in a randomized block design, in split splot scheme with three replications, in which the vernalization periods (25, 35 and 45 days at 4 ± 1 C) constituted the plots; bulb sizes (diameters of 3.2-3.8 cm; 2.5-3.2 cm 1.9- and 2.5 cm), subplots and ways to harvest (full harvest of the stem at the required length for the commercial harvest of the flower, commercial stem harvest at the commercial length, maintaining 10cm of stem in the soil; removal of the floral buds as soon as their appearance is observed and harvest at the end of the season), the sub subplots. The bulbs were planted in beds, with 15 x 20 cm spacing. It was evaluated the number of plants that flowered and the number of flowers, the length and the diameter of the floral buds, fresh and dry weights, diameter and plant height as well as number, perimeter and amount of fresh and dry bulbs. There was a decrease in the plant height with the increase of the vernalization period and a reduction of the diameter of the planted bulbs, as well as of the number and the fresh and dry weights of the produced buds. The production of flowers and buds in number, size and weight was directly proportional to the size of the planted bulbs, while the form of harvest with removal of flower buds increased the number, the perimeter and the fresh and dry weights of the buds. Bulbs with diameter between 3.2 - 3.8 cm, stored for 25 days in cold chamber enable greater production of flowers and the highest stem height, factors that favor the increase in market value.

scholarly journals Selectivity of Herbicide Associations with Chemical Protector in the Treatment of Sweet Sorghum Hybrid Seeds

2017 ◽  
Vol 35 (0) ◽  
Author(s):  
C.D.G. MACIEL ◽  
A.M. OLIVEIRA NETO ◽  
N. GUERRA ◽  
G.B. LEAL ◽  
A.A.P. SILVA ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Seed Treatment ◽  
Plant Density ◽  
Block Design ◽  
Control Sample ◽  
Naphthalic Anhydride ◽  
Randomized Block Design ◽  
Hybrid Seeds ◽  
Stalk Yield

ABSTRACT Sweet sorghum culture is an alternative to sugar and ethanol production. With the aim of evaluating herbicide tank-mix selectivity associated or not to sweet sorghum seed treatment with naphthalic anhydride, two experiments with ESX5200 and EJX7C5110 hybrids were performed in red oxisol (clayey) field conditions, in the municipality of Campo Mourão, Paraná state. A randomized block design was used, with 4 x 2 factorial scheme, with four replications. The first factor represented three herbicide associations and a control sample without herbicide, and the second factor was constituted by the absence or presence of seed treatment with naphthalic anhydride (5.0 g kg-1). Herbicide treatments were tank-mixes of atrazine + S-metolachor (2,640 + 480 g ha 1) (pre-emergence); atrazine + S-metolachlor + isoxaflutole (2,640 + 480 + 11.25 g ha-1) (pre-emergence) and atrazine + S-metolachlor (1,500 + 384 g ha-1) (post-emergence). The following characteristics were evaluated: intoxication, plant height, stalk diameter, number of internodes per stalk and plant density, performed 60 days after emergence (DAE); stalk yield and Brix, were evaluated on day 85 DAE. Atrazine + S-metolachlor tank-mix applied in pre or post-emergence did not affect growth, development, yield and stalk quality of the ESX5200 and EJX7C5110 sweet sorghum hybrids. Sweet sorghum seed treatment with naphthalic anhydride provided partial protection against the action of atrazine + s-metolachlor + isoxaflutole tank-mixes, being more evident for the ESX5200 hybrid.

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