Control of Quackgrass (Elytrigia repens) and Field Mint (Mentha arvensis) with Glyphosate Applied Preharvest

Field experiments showed that quackgrass could be controlled by glyphosate applied preharvest to barley. In separate experiments, field mint was controlled by glyphosate applied pre- and postharvest to barley and wheat. Suppression of quackgrass regrowth one year following treatment was 90% or greater when glyphosate was applied at 0.9 kg ai/ha alone or at 0.45 kg ai/ha in combination with both tallow amine ethoxylate at 0.5% of total spray volume and ammonium sulfate at 3 kg/ha. Field mint shoot counts were reduced 84% the year following treatment when glyphosate was applied at 0.25 kg ai/ha and 95% when applied at 1.0 kg ai/ha. Suppression of field mint shoot regrowth the following year was 84% when glyphosate was applied postharvest and 93% when applied preharvest. Addition of tallow amine ethoxylate did not improve field mint control. Glyphosate applied preharvest to barley and wheat at less than 30% grain moisture content had no effect on grain yield.

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Effects of Nicosulfuron on Quackgrass (Elytrigia repens) Control in Corn (Zea mays)

Weed Technology ◽

10.1017/s0890037x0003428x ◽

1992 ◽

Vol 6 (1) ◽

pp. 52-56 ◽

Cited By ~ 23

Author(s):

Prasanta C. Bhowmik ◽

Betsey M. O'Toole ◽

John Andaloro

Keyword(s):

Zea Mays ◽

Grain Yield ◽

Field Experiments ◽

Single Application ◽

Leaf Stage ◽

Field Corn ◽

Elytrigia Repens ◽

One Year ◽

The One ◽

Conventional Field

Four field experiments were conducted during 1988 and 1989 to determine the effects of POST application of nicosulfuron on quackgrass control in conventional field corn. A single application of nicosulfuron at 35 to 70 g ha–1applied to four- to six-leaf quackgrass controlled over 90% of quackgrass five weeks after treatment. Nicosulfuron at 35 g ha–1applied at the one- to three-leaf stage was not as effective as the same rate applied at the four- to six-leaf stage. When nicosulfuron at 35 g ha–1was applied to four- to six-leaf quackgrass, over 80% of the quackgrass regrowth was controlled one year later. Nicosulfuron did not injure ‘Agway 584S’ corn at the highest rate (140 g ha–1) tested and did not reduce silage or grain yield.

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Green ear yield and grain yield of maize after harvest of the first ear as baby corn

Horticultura Brasileira ◽

10.1590/s0102-05362006000200005 ◽

2006 ◽

Vol 24 (2) ◽

pp. 151-155 ◽

Cited By ~ 7

Author(s):

Paulo Sérgio L e Silva ◽

Paulo Igor B e Silva ◽

Ana Karenina F de Sousa ◽

Kamila M Gurgel ◽

Israel A Pereira Filho

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Block Design ◽

Female Inflorescence ◽

Grain Moisture ◽

Random Block ◽

Random Block Design ◽

Corn Grain

Baby corn (BC) consists of the corn ear harvested two or three days after silk emergence. BC is a profitable crop, making possible a diversification of production, aggregation of value and increased income. Removing the first female inflorescence induces corn to produce others, making possible to produce several BC ears or, alternatively, BC (by harvesting the first ear) and green ears or grain. The objective of this work was to evaluate green ear yield and grain yield, after harvesting the first ear as BC. Corn cultivar AG 1051 was submitted to the following treatments, in a random block design with ten replicates (52 plants per plot): BC harvesting; green ear harvesting (grain moisture content between 60 and 70%); mature ear harvesting; BC harvesting and harvesting of other ears as green or mature ears. Marketable green ears yield or grain yield produced without removing the first inflorescence were superior to the green ears yield or grain yield produced after removal of the first inflorescence harvested as baby corn. Harvesting only the first ear as baby corn, and then harvesting green ears or the mature ears, provided lower baby corn yields than that obtained by harvesting all ears as baby corn. Economically, the best net revenues would be obtained by exploring the crop for the production of green ears, green ears + baby corn, baby corn, baby corn + grain, and grain, in this order.

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A Grain Yield Sensor for Yield Mapping with Local Rice Combine Harvester

Agriculture ◽

10.3390/agriculture11090897 ◽

2021 ◽

Vol 11 (9) ◽

pp. 897

Author(s):

Chaiyan Sirikun ◽

Grianggai Samseemoung ◽

Peeyush Soni ◽

Jaturong Langkapin ◽

Jakkree Srinonchat

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Geographical Information ◽

Rice Grain ◽

Coefficients Of Variation ◽

Grain Moisture ◽

Pertinent Information ◽

Yield Values ◽

Combine Harvester ◽

Yield Monitoring

Rice grain yield was estimated from a locally made Thai combine harvester using a specially developed sensing and monitoring system. The yield monitoring and sensing system, mounted on the rice combine harvester, collected and logged grain mass flow rate and moisture content, as well as pertinent information related to field, position and navigation. The developed system comprised a yield meter, GNSS receiver and a computer installed with customized software, which, when assembled on a local rice combine, mapped real-time rice yield along with grain moisture content. The performance of the developed system was evaluated at three neighboring (identically managed) rice fields. ArcGIS® software was used to create grain yield map with geographical information of the fields. The average grain yield values recorded were 3.63, 3.84 and 3.60 t ha−1, and grain moisture contents (w.b.) were 22.42%, 23.50% and 24.71% from the three fields, respectively. Overall average grain yield was 3.84 t ha−1 (CV = 63.68%) with 578.10 and 7761.58 kg ha−1 as the minimum and maximum values, respectively. The coefficients of variation in grain yield of the three fields were 57.44%, 63.68% and 60.41%, respectively. The system performance was evaluated at four different cutter bar heights (0.18, 0.25, 0.35 and 0.40 m) during the test. As expected, the tallest cutter bar height (0.40 m) offered the least error of 12.50% in yield estimation. The results confirmed that the developed grain yield sensor could be successfully used with the local rice combine harvester; hence, offers and ‘up-gradation’ potential in Thai agricultural mechanization.

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EFFECT OF GRAIN MOISTURE OF CORN AT HARVESTING ON SOME AGRONOMIC TRAITS

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v47i5.514 ◽

2016 ◽

Vol 47 (5) ◽

Author(s):

Baktash & Alkazaali

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Seed Production ◽

Agronomic Traits ◽

Field Crop ◽

Spring Season ◽

College Of Agriculture ◽

Fall Season ◽

Moisture Contents ◽

Grain Moisture

This research was conducted during spring and fall seasons, 2015 , at the fields of Field Crop Department – College of Agriculture –University of Baghdad . The objective was to study the effect of grain moisture at harvesting on some agronomic traits of the corn next generation , by using synthetic variety 5018 . In spring season 2015 , seeds of this variety was planted ,when moisture of the ear grains was (37-42%) , ten ears were harvested. Ear harvesting dates were performed manually when the grains had 37-42% , 34-36% , 30-33% , 25- 28% and 19-22% moisture content. In fall season 2015 , varietal trail was carried out to the five treatment materials , using Randomized Complete Bock Design , with four replicates. The results revealed , that non significant differences between treatments (19-22)% and (25-28)% , in all the studied traits . The plants grown from the seeds of (25-28)%, were produced highest vegetative mass (116.30 g.plant-1) , total dray matter (269 g. plant-1) and total dray matter ( 1.80 kg.m-2 ) . Highest grain yield ( 1.07 kg.m-2 ) and harvesting index ( 0.63) were produced from plants grown from seeds harvested with (19-22)% moisture content . It can be concluded that the best moisture contents of the grains for seed production was (19-28)%.

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Effect of different proportions of exotic germplasm on grain yield and grain moisture in maize

Genetika ◽

10.2298/gensr1101067n ◽

2011 ◽

Vol 43 (1) ◽

pp. 67-73

Author(s):

Aleksandra Nastasic ◽

Mile Ivanovic ◽

Milisav Stojakovic ◽

Dusan Stanisavljevic ◽

Sanja Treskic ◽

...

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Orthogonal Polynomials ◽

Inbred Line ◽

Male Parent ◽

Maize Inbred Line ◽

Exotic Germplasm ◽

Tropical Maize ◽

Maize Germplasm ◽

Grain Moisture

Two main questions in programs introgressing exotic maize germplasm into temperate materials are the choice of available exotic sources to work with, and the proportion of exotic germplasm that should be incorporated into adapted germplasm. The objective of this study was to compare effects of different proportions of tropical maize inbred line NC298 in hybrids male parent on grain yield and grain moisture content, using method of orthogonal polynomials. Methods of direct crosses and backcrosses were used to form four hybrid groups (six hybrids each) containing 0, 25, 50 and 75 percent of tropical exotic germplasm, respectively, by their male parent (or one half of mentioned proportions in the corresponding hybrids). The linear components of the germplasm proportions sum of squares, were significant (p<0.01) for both grain yield and moisture content and the cubic effect (p<0.05) for grain yield only. Results in this study clearly suggested backcross foundation populations with an adapted line to be appropriate selection sources for both grain yield and grain moisture content.

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Reaction norm and stability of short-season maize hybrids as affected by environment

Кормопроизводство ◽

10.25685/krm.2020.2020.63669 ◽

2020 ◽

Author(s):

В. Сотченко ◽

А. Горбачёва ◽

А. Панфилов ◽

Н. Казакова ◽

И. Ветошкина

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Reaction Norm ◽

Yield Potential ◽

South Urals ◽

The South ◽

Maize Hybrids ◽

Grain Moisture ◽

Wide Range ◽

Short Season

Полевые опыты проведены в 20162018 годах на опытных полях ВНИИ кукурузы в п. Пятигорский Предгорного района Ставропольского края и в Институте агроэкологии филиале Южно-Уральского ГАУ в с. Миасское Красноармейского района Челябинской области. Цель исследований изучить потенциал урожая раннеспелых гибридов кукурузы и уборочную влажность зерна в разных климатических зонах, выявить гибриды, гарантирующие стабильно высокий урожай зерна в условиях Южного Урала. Одной из важнейших экологических особенностей кукурузы является её широкая норма реакции на изменение условий среды, показателем проявления которой выступает пластичность и стабильность. Было проведено изучение основных хозяйственно ценных показателей девяти раннеспелых гибридов кукурузы трёх селекционных учреждений РФ при оптимальном сроке посева в двух географических точках (Северо-Кавказском и Уральском регионах РФ). Анализ нормы и стабильности реакции гибридов кукурузы по урожаю зерна на условия вегетации позволил отнести все изучаемые гибриды к среднепластичным. Значение нормы линейной реакции (r 0,71) свидетельствует об усилении отзывчивости гибридов на улучшение условий среды. Низкостабильными оказались только два гибрида: Машук 150 МВ и Ладожский 148 СВ. Остальные гибриды относятся к высокостабильной группе. Экологическая стабильность реакции слабо связана с урожаем зерна (r 0,26). Высокоурожайными на Южном Урале оказались гибриды кукурузы Уральский 150 и Обский 140 СВ. Гибрид кукурузы очень раннего срока цветения Кубанский 101 СВ был самым низкоурожайным и низкорослым в обоих пунктах. Лучший гибрид кукурузы для условий Южного Урала Уральский 150: при среднем урожае зерна за 3 года 6,5 т/га его уборочная влажность составила 31,7. Field trials took place in 20162018. The aim to select the best short-season maize hybrids for the South Urals and evaluate their yield potential as well as grain moisture content at harvest under different environmental conditions. Maize has a wide range of responses to environment defining its plasticity and stability. Economically important traits of nine short season maize hybrids obtained from three Breeding Institutions were analyzed in the North Caucasus and Ural regions of Russia under optimal seeding date. Hybrid yields showed medium variation as a response to growth conditions. Linear reaction norm model (r 0.71) represented sensitivity increase to improved conditions. Mashuk 150 MV and Ladozhskiy 148 SV hybrids were the most sensitive to environmental changes. Other hybrids had similar performance across different environments. Low trait variation under different conditions affected grain yield insignificantly (r 0.26). Uralskiy 150 and Obskiy 140 SV had high productivity in the South Urals. Extra short-season Kubanskiy 101 SV hybrid showed the lowest productivity and height at both locations. Uralskiy 150 hybrid was the most productive in the South Urals: for 3 years its grain yield amounted to 6.5 t ha-1, grain moisture content at harvest 31.7.

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Response of weed populations to tillage, reduced herbicide and fertilizer rates in wheat (Triticum aestivum) production

Planta Daninha ◽

10.1590/s0100-83582003000100013 ◽

2003 ◽

Vol 21 (1) ◽

pp. 105-110 ◽

Cited By ~ 1

Author(s):

H.A. Acciaresi ◽

H.V. Balbi ◽

M.L. Bravo ◽

H.O. Chidichimo

Keyword(s):

Grain Yield ◽

Field Experiments ◽

Conventional Tillage ◽

Fertilization Rate ◽

Weed Biomass ◽

Weed Growth ◽

Medium Level ◽

One Year ◽

Conventional Ct ◽

Dose Levels

Field experiments were carried out in 1999 and 2000 to investigate the effects of conventional (CT) and no-tillage (NT) systems, interacting with three herbicide dose levels and three nitrogen (N) levels on weed growth and wheat production of two varieties. There was a higher grain yield for NT system compared with CT in one year. CT weed biomass was lower than from NT weed biomass, in both varieties. No differences on wheat biomass and grain yield were observed between full and reduced herbicide rates. N fertilizer increased wheat biomass and grain yield significantly. Only N medium level had an effect upon weed biomass with respect to non-fertilized plots, while the highest fertilization rate lowered weed biomass. Conventional tillage, reduced herbicide rates and nitrogen fertilization were effective ways of limiting weed production in wheat.

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Effect of sowing technology on the yield and harvest grain moisture content of maize (Zea mays L.) hybrids with different genotypes

Acta Agraria Debreceniensis ◽

10.34101/actaagrar/68/1764 ◽

2016 ◽

pp. 17-22

Author(s):

Eszter Murányi

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Plant Density ◽

Research Work ◽

Field Research ◽

Weather Conditions ◽

Research Centre ◽

Row Spacing ◽

Grain Moisture ◽

Significant Difference

From the aspect of the efficiency of maize production harvest grain moisture content shall be considered beside the amount of harvested grain yield. Hybrids with different genotypes and vegetation period length lose their moisture content different that is affected by row spacing and plant density – among agrotechnical production factors – depending on the given crop year. In the present research work three crop years with different weather conditions were studied (2013, 2014, and 2015). The small-plot field experiment was set up at the Látókép Field Research Centre of the University of Debrecen, Centre for Agricultural Sciences with four replications on a chernozem soil type. The effect of three factors was analysed in the experiment on yield amount and its moisture content. Factors were row spacing (45 and 76 cm), plant density (50, 70 and 90 thousand plants ha-1), while hybrids were of very early (Sarolta: FAO 290), early (DKC 4014: FAO 320, P 9175: FAO 330, P 9494: FAO 390) and medium (SY Afinity: FAO 470) ripening. In the crop year of 2013 the highest yield was produced – regarding the average of the hybrids – by the application of a row spacing of 45 cm (4.5%, 673 kg ha-1), however there was no significant difference between the yield of the populations of different row spacings. Significant difference (14.9%, 1751 kg ha-1; 6.3%, 583 kg ha-1) could be found in case of yield between different row spacing applications in 2014 and 2015. The effect of insufficiently distributed low amount of precipitation and lasting heat days in 2015 could be revealed in yield amounts and harvest grain yield moisture content results that were lower than in the previous years. In 2015 grain yield moisture content varied between 10.3 and 13.9% in case of a row spacing of 45 cm, while by 76 cm between 11.0 and 13.9%.

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Comparación de sorgos (Sorghum bicolor L.) isogénicos para dos tipos de citoplasma, aptitud combinatoria general y específica.

Agronomía Mesoamericana ◽

10.15517/am.v6i0.24816 ◽

2016 ◽

Vol 6 ◽

pp. 118

Author(s):

Héctor Williams ◽

Raúl Rodríguez

Keyword(s):

Moisture Content ◽

Grain Yield ◽

Sorghum Bicolor ◽

Plant Height ◽

Seed Production ◽

Combining Ability ◽

Specific Combining Ability ◽

Northern Mexico ◽

Grain Moisture ◽

Sorghum Bicolor L

The purpose of this study was to compare estimates of relati ve general and specific combining ability effects on isogenic hybrids in two different cytoplasm types (A1 and A2), and observe the possibility of use the A2 system for the commercialproduction of sorghum hybrids. Genotypes were evaluated in ten environments located in northern Mexico. Grain yield, days to flowering, grain moisture content at harvest, plant height, panicle lenght and panicle excertion were recorded from the experiments. Combining ability was estimated ac-cording to the model suggested by Beil and Atkins in 1967. Although in all studied, the characteristics generally, the best SCA and GCA were for A2 cytoplasm, there was no relation between cytoplasm type and combining ability. These results indicate that A2 cytoplasm can be used for commercial hybrid sorghum seed production, as an alternative to Al cytoplasm.

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Effect of spray volume on the moisture of stored corn and wheat grains

Brazilian Archives of Biology and Technology ◽

10.1590/s1516-89132008000300003 ◽

2008 ◽

Vol 51 (3) ◽

pp. 453-456 ◽

Cited By ~ 3

Author(s):

Javier Alberto Vásquez-Castro ◽

Gilberto Casadei de Baptista ◽

Casimiro Dias Gadanha Junior ◽

Luiz Roberto Pimentel Trevizan

Keyword(s):

Moisture Content ◽

Initial Moisture Content ◽

Oven Method ◽

Wheat Grains ◽

Plastic Bags ◽

Grain Moisture ◽

Stored Grains ◽

Spray Volume

The goal of this work was to evaluate the effect of spray volume on the moisture of the stored grains of the corn and wheat. Two kg of each type of the grain were placed into the plastic bags and sprayed with the theoretical doses of 0, 1, 3, 5, 8, and 10 liters of water / ton of the grain. The grain moisture content was evaluated 24 h after the spray operation by the oven method. The increase in the grain moisture was quadratic and showed the same trend in both the corn and wheat. The grain moisture after spraying 10 L.t-1 showed little increase (0.8 %) as compared to the initial moisture content. Thus, the application of any spray volume as used in this study made no difference for a possible better uniformity in the distribution of insecticide throughout the sprayed material.

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